1 // SPDX-License-Identifier: GPL-2.0-or-later
3 /***************************************************************************
4 * Generic Xtensa target API for OpenOCD *
5 * Copyright (C) 2020-2022 Cadence Design Systems, Inc. *
6 * Copyright (C) 2016-2019 Espressif Systems Ltd. *
7 * Derived from esp108.c *
8 * Author: Angus Gratton gus@projectgus.com *
9 ***************************************************************************/
16 #include <helper/time_support.h>
17 #include <helper/align.h>
18 #include <target/register.h>
20 #include "xtensa_chip.h"
23 /* Swap 4-bit Xtensa opcodes and fields */
24 #define XT_NIBSWAP8(V) \
25 ((((V) & 0x0F) << 4) \
26 | (((V) & 0xF0) >> 4))
28 #define XT_NIBSWAP16(V) \
29 ((((V) & 0x000F) << 12) \
30 | (((V) & 0x00F0) << 4) \
31 | (((V) & 0x0F00) >> 4) \
32 | (((V) & 0xF000) >> 12))
34 #define XT_NIBSWAP24(V) \
35 ((((V) & 0x00000F) << 20) \
36 | (((V) & 0x0000F0) << 12) \
37 | (((V) & 0x000F00) << 4) \
38 | (((V) & 0x00F000) >> 4) \
39 | (((V) & 0x0F0000) >> 12) \
40 | (((V) & 0xF00000) >> 20))
43 * Instruction formatting converted from little-endian inputs
44 * and shifted to the MSB-side of DIR for BE systems.
46 #define _XT_INS_FORMAT_RSR(X, OPCODE, SR, T) \
47 (XT_ISBE(X) ? (XT_NIBSWAP24(OPCODE) \
48 | (((T) & 0x0F) << 16) \
49 | (((SR) & 0xFF) << 8)) << 8 \
51 | (((SR) & 0xFF) << 8) \
52 | (((T) & 0x0F) << 4))
54 #define _XT_INS_FORMAT_RRR(X, OPCODE, ST, R) \
55 (XT_ISBE(X) ? (XT_NIBSWAP24(OPCODE) \
56 | ((XT_NIBSWAP8((ST) & 0xFF)) << 12) \
57 | (((R) & 0x0F) << 8)) << 8 \
59 | (((ST) & 0xFF) << 4) \
60 | (((R) & 0x0F) << 12))
62 #define _XT_INS_FORMAT_RRRN(X, OPCODE, S, T, IMM4) \
63 (XT_ISBE(X) ? (XT_NIBSWAP16(OPCODE) \
64 | (((T) & 0x0F) << 8) \
65 | (((S) & 0x0F) << 4) \
66 | ((IMM4) & 0x0F)) << 16 \
68 | (((T) & 0x0F) << 4) \
69 | (((S) & 0x0F) << 8) \
70 | (((IMM4) & 0x0F) << 12))
72 #define _XT_INS_FORMAT_RRI8(X, OPCODE, R, S, T, IMM8) \
73 (XT_ISBE(X) ? (XT_NIBSWAP24(OPCODE) \
74 | (((T) & 0x0F) << 16) \
75 | (((S) & 0x0F) << 12) \
76 | (((R) & 0x0F) << 8) \
77 | ((IMM8) & 0xFF)) << 8 \
79 | (((IMM8) & 0xFF) << 16) \
80 | (((R) & 0x0F) << 12) \
81 | (((S) & 0x0F) << 8) \
82 | (((T) & 0x0F) << 4))
84 #define _XT_INS_FORMAT_RRI4(X, OPCODE, IMM4, R, S, T) \
85 (XT_ISBE(X) ? (XT_NIBSWAP24(OPCODE) \
86 | (((T) & 0x0F) << 16) \
87 | (((S) & 0x0F) << 12) \
88 | (((R) & 0x0F) << 8)) << 8 \
91 | (((IMM4) & 0x0F) << 20) \
92 | (((R) & 0x0F) << 12) \
93 | (((S) & 0x0F) << 8) \
94 | (((T) & 0x0F) << 4))
96 /* Xtensa processor instruction opcodes
98 /* "Return From Debug Operation" to Normal */
99 #define XT_INS_RFDO(X) (XT_ISBE(X) ? 0x000e1f << 8 : 0xf1e000)
100 /* "Return From Debug and Dispatch" - allow sw debugging stuff to take over */
101 #define XT_INS_RFDD(X) (XT_ISBE(X) ? 0x010e1f << 8 : 0xf1e010)
103 /* Load to DDR register, increase addr register */
104 #define XT_INS_LDDR32P(X, S) (XT_ISBE(X) ? (0x0E0700 | ((S) << 12)) << 8 : (0x0070E0 | ((S) << 8)))
105 /* Store from DDR register, increase addr register */
106 #define XT_INS_SDDR32P(X, S) (XT_ISBE(X) ? (0x0F0700 | ((S) << 12)) << 8 : (0x0070F0 | ((S) << 8)))
108 /* Load 32-bit Indirect from A(S)+4*IMM8 to A(T) */
109 #define XT_INS_L32I(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x002002, 0, S, T, IMM8)
110 /* Load 16-bit Unsigned from A(S)+2*IMM8 to A(T) */
111 #define XT_INS_L16UI(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x001002, 0, S, T, IMM8)
112 /* Load 8-bit Unsigned from A(S)+IMM8 to A(T) */
113 #define XT_INS_L8UI(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x000002, 0, S, T, IMM8)
115 /* Store 32-bit Indirect to A(S)+4*IMM8 from A(T) */
116 #define XT_INS_S32I(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x006002, 0, S, T, IMM8)
117 /* Store 16-bit to A(S)+2*IMM8 from A(T) */
118 #define XT_INS_S16I(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x005002, 0, S, T, IMM8)
119 /* Store 8-bit to A(S)+IMM8 from A(T) */
120 #define XT_INS_S8I(X, S, T, IMM8) _XT_INS_FORMAT_RRI8(X, 0x004002, 0, S, T, IMM8)
122 /* Cache Instructions */
123 #define XT_INS_IHI(X, S, IMM8) _XT_INS_FORMAT_RRI8(X, 0x0070E2, 0, S, 0, IMM8)
124 #define XT_INS_DHWBI(X, S, IMM8) _XT_INS_FORMAT_RRI8(X, 0x007052, 0, S, 0, IMM8)
125 #define XT_INS_DHWB(X, S, IMM8) _XT_INS_FORMAT_RRI8(X, 0x007042, 0, S, 0, IMM8)
126 #define XT_INS_ISYNC(X) (XT_ISBE(X) ? 0x000200 << 8 : 0x002000)
128 /* Control Instructions */
129 #define XT_INS_JX(X, S) (XT_ISBE(X) ? (0x050000 | ((S) << 12)) : (0x0000a0 | ((S) << 8)))
130 #define XT_INS_CALL0(X, IMM18) (XT_ISBE(X) ? (0x500000 | ((IMM18) & 0x3ffff)) : (0x000005 | (((IMM18) & 0x3ffff) << 6)))
132 /* Read Special Register */
133 #define XT_INS_RSR(X, SR, T) _XT_INS_FORMAT_RSR(X, 0x030000, SR, T)
134 /* Write Special Register */
135 #define XT_INS_WSR(X, SR, T) _XT_INS_FORMAT_RSR(X, 0x130000, SR, T)
136 /* Swap Special Register */
137 #define XT_INS_XSR(X, SR, T) _XT_INS_FORMAT_RSR(X, 0x610000, SR, T)
139 /* Rotate Window by (-8..7) */
140 #define XT_INS_ROTW(X, N) (XT_ISBE(X) ? ((0x000804) | (((N) & 15) << 16)) << 8 : ((0x408000) | (((N) & 15) << 4)))
142 /* Read User Register */
143 #define XT_INS_RUR(X, UR, T) _XT_INS_FORMAT_RRR(X, 0xE30000, UR, T)
144 /* Write User Register */
145 #define XT_INS_WUR(X, UR, T) _XT_INS_FORMAT_RSR(X, 0xF30000, UR, T)
147 /* Read Floating-Point Register */
148 #define XT_INS_RFR(X, FR, T) _XT_INS_FORMAT_RRR(X, 0xFA0000, ((FR << 4) | 0x4), T)
149 /* Write Floating-Point Register */
150 #define XT_INS_WFR(X, FR, T) _XT_INS_FORMAT_RRR(X, 0xFA0000, ((T << 4) | 0x5), FR)
152 #define XT_INS_L32E(X, R, S, T) _XT_INS_FORMAT_RRI4(X, 0x090000, 0, R, S, T)
153 #define XT_INS_S32E(X, R, S, T) _XT_INS_FORMAT_RRI4(X, 0x490000, 0, R, S, T)
154 #define XT_INS_L32E_S32E_MASK(X) (XT_ISBE(X) ? 0xF000FF << 8 : 0xFF000F)
156 #define XT_INS_RFWO(X) (XT_ISBE(X) ? 0x004300 << 8 : 0x003400)
157 #define XT_INS_RFWU(X) (XT_ISBE(X) ? 0x005300 << 8 : 0x003500)
158 #define XT_INS_RFWO_RFWU_MASK(X) (XT_ISBE(X) ? 0xFFFFFF << 8 : 0xFFFFFF)
160 #define XT_WATCHPOINTS_NUM_MAX 2
162 /* Special register number macro for DDR, PS, WB, A3, A4 registers.
163 * These get used a lot so making a shortcut is useful.
165 #define XT_SR_DDR (xtensa_regs[XT_REG_IDX_DDR].reg_num)
166 #define XT_SR_PS (xtensa_regs[XT_REG_IDX_PS].reg_num)
167 #define XT_SR_WB (xtensa_regs[XT_REG_IDX_WINDOWBASE].reg_num)
168 #define XT_REG_A3 (xtensa_regs[XT_REG_IDX_AR3].reg_num)
169 #define XT_REG_A4 (xtensa_regs[XT_REG_IDX_AR4].reg_num)
171 #define XT_PS_REG_NUM_BASE (0xc0U) /* (EPS2 - 2), for adding DBGLEVEL */
172 #define XT_PC_REG_NUM_BASE (0xb0U) /* (EPC1 - 1), for adding DBGLEVEL */
173 #define XT_PC_REG_NUM_VIRTUAL (0xffU) /* Marker for computing PC (EPC[DBGLEVEL) */
174 #define XT_PC_DBREG_NUM_BASE (0x20U) /* External (i.e., GDB) access */
176 #define XT_SW_BREAKPOINTS_MAX_NUM 32
177 #define XT_HW_IBREAK_MAX_NUM 2
178 #define XT_HW_DBREAK_MAX_NUM 2
180 struct xtensa_reg_desc xtensa_regs
[XT_NUM_REGS
] = {
181 XT_MK_REG_DESC("pc", XT_PC_REG_NUM_VIRTUAL
, XT_REG_SPECIAL
, 0),
182 XT_MK_REG_DESC("ar0", 0x00, XT_REG_GENERAL
, 0),
183 XT_MK_REG_DESC("ar1", 0x01, XT_REG_GENERAL
, 0),
184 XT_MK_REG_DESC("ar2", 0x02, XT_REG_GENERAL
, 0),
185 XT_MK_REG_DESC("ar3", 0x03, XT_REG_GENERAL
, 0),
186 XT_MK_REG_DESC("ar4", 0x04, XT_REG_GENERAL
, 0),
187 XT_MK_REG_DESC("ar5", 0x05, XT_REG_GENERAL
, 0),
188 XT_MK_REG_DESC("ar6", 0x06, XT_REG_GENERAL
, 0),
189 XT_MK_REG_DESC("ar7", 0x07, XT_REG_GENERAL
, 0),
190 XT_MK_REG_DESC("ar8", 0x08, XT_REG_GENERAL
, 0),
191 XT_MK_REG_DESC("ar9", 0x09, XT_REG_GENERAL
, 0),
192 XT_MK_REG_DESC("ar10", 0x0A, XT_REG_GENERAL
, 0),
193 XT_MK_REG_DESC("ar11", 0x0B, XT_REG_GENERAL
, 0),
194 XT_MK_REG_DESC("ar12", 0x0C, XT_REG_GENERAL
, 0),
195 XT_MK_REG_DESC("ar13", 0x0D, XT_REG_GENERAL
, 0),
196 XT_MK_REG_DESC("ar14", 0x0E, XT_REG_GENERAL
, 0),
197 XT_MK_REG_DESC("ar15", 0x0F, XT_REG_GENERAL
, 0),
198 XT_MK_REG_DESC("ar16", 0x10, XT_REG_GENERAL
, 0),
199 XT_MK_REG_DESC("ar17", 0x11, XT_REG_GENERAL
, 0),
200 XT_MK_REG_DESC("ar18", 0x12, XT_REG_GENERAL
, 0),
201 XT_MK_REG_DESC("ar19", 0x13, XT_REG_GENERAL
, 0),
202 XT_MK_REG_DESC("ar20", 0x14, XT_REG_GENERAL
, 0),
203 XT_MK_REG_DESC("ar21", 0x15, XT_REG_GENERAL
, 0),
204 XT_MK_REG_DESC("ar22", 0x16, XT_REG_GENERAL
, 0),
205 XT_MK_REG_DESC("ar23", 0x17, XT_REG_GENERAL
, 0),
206 XT_MK_REG_DESC("ar24", 0x18, XT_REG_GENERAL
, 0),
207 XT_MK_REG_DESC("ar25", 0x19, XT_REG_GENERAL
, 0),
208 XT_MK_REG_DESC("ar26", 0x1A, XT_REG_GENERAL
, 0),
209 XT_MK_REG_DESC("ar27", 0x1B, XT_REG_GENERAL
, 0),
210 XT_MK_REG_DESC("ar28", 0x1C, XT_REG_GENERAL
, 0),
211 XT_MK_REG_DESC("ar29", 0x1D, XT_REG_GENERAL
, 0),
212 XT_MK_REG_DESC("ar30", 0x1E, XT_REG_GENERAL
, 0),
213 XT_MK_REG_DESC("ar31", 0x1F, XT_REG_GENERAL
, 0),
214 XT_MK_REG_DESC("ar32", 0x20, XT_REG_GENERAL
, 0),
215 XT_MK_REG_DESC("ar33", 0x21, XT_REG_GENERAL
, 0),
216 XT_MK_REG_DESC("ar34", 0x22, XT_REG_GENERAL
, 0),
217 XT_MK_REG_DESC("ar35", 0x23, XT_REG_GENERAL
, 0),
218 XT_MK_REG_DESC("ar36", 0x24, XT_REG_GENERAL
, 0),
219 XT_MK_REG_DESC("ar37", 0x25, XT_REG_GENERAL
, 0),
220 XT_MK_REG_DESC("ar38", 0x26, XT_REG_GENERAL
, 0),
221 XT_MK_REG_DESC("ar39", 0x27, XT_REG_GENERAL
, 0),
222 XT_MK_REG_DESC("ar40", 0x28, XT_REG_GENERAL
, 0),
223 XT_MK_REG_DESC("ar41", 0x29, XT_REG_GENERAL
, 0),
224 XT_MK_REG_DESC("ar42", 0x2A, XT_REG_GENERAL
, 0),
225 XT_MK_REG_DESC("ar43", 0x2B, XT_REG_GENERAL
, 0),
226 XT_MK_REG_DESC("ar44", 0x2C, XT_REG_GENERAL
, 0),
227 XT_MK_REG_DESC("ar45", 0x2D, XT_REG_GENERAL
, 0),
228 XT_MK_REG_DESC("ar46", 0x2E, XT_REG_GENERAL
, 0),
229 XT_MK_REG_DESC("ar47", 0x2F, XT_REG_GENERAL
, 0),
230 XT_MK_REG_DESC("ar48", 0x30, XT_REG_GENERAL
, 0),
231 XT_MK_REG_DESC("ar49", 0x31, XT_REG_GENERAL
, 0),
232 XT_MK_REG_DESC("ar50", 0x32, XT_REG_GENERAL
, 0),
233 XT_MK_REG_DESC("ar51", 0x33, XT_REG_GENERAL
, 0),
234 XT_MK_REG_DESC("ar52", 0x34, XT_REG_GENERAL
, 0),
235 XT_MK_REG_DESC("ar53", 0x35, XT_REG_GENERAL
, 0),
236 XT_MK_REG_DESC("ar54", 0x36, XT_REG_GENERAL
, 0),
237 XT_MK_REG_DESC("ar55", 0x37, XT_REG_GENERAL
, 0),
238 XT_MK_REG_DESC("ar56", 0x38, XT_REG_GENERAL
, 0),
239 XT_MK_REG_DESC("ar57", 0x39, XT_REG_GENERAL
, 0),
240 XT_MK_REG_DESC("ar58", 0x3A, XT_REG_GENERAL
, 0),
241 XT_MK_REG_DESC("ar59", 0x3B, XT_REG_GENERAL
, 0),
242 XT_MK_REG_DESC("ar60", 0x3C, XT_REG_GENERAL
, 0),
243 XT_MK_REG_DESC("ar61", 0x3D, XT_REG_GENERAL
, 0),
244 XT_MK_REG_DESC("ar62", 0x3E, XT_REG_GENERAL
, 0),
245 XT_MK_REG_DESC("ar63", 0x3F, XT_REG_GENERAL
, 0),
246 XT_MK_REG_DESC("windowbase", 0x48, XT_REG_SPECIAL
, 0),
247 XT_MK_REG_DESC("windowstart", 0x49, XT_REG_SPECIAL
, 0),
248 XT_MK_REG_DESC("ps", 0xE6, XT_REG_SPECIAL
, 0), /* PS (not mapped through EPS[]) */
249 XT_MK_REG_DESC("ibreakenable", 0x60, XT_REG_SPECIAL
, 0),
250 XT_MK_REG_DESC("ddr", 0x68, XT_REG_DEBUG
, XT_REGF_NOREAD
),
251 XT_MK_REG_DESC("ibreaka0", 0x80, XT_REG_SPECIAL
, 0),
252 XT_MK_REG_DESC("ibreaka1", 0x81, XT_REG_SPECIAL
, 0),
253 XT_MK_REG_DESC("dbreaka0", 0x90, XT_REG_SPECIAL
, 0),
254 XT_MK_REG_DESC("dbreaka1", 0x91, XT_REG_SPECIAL
, 0),
255 XT_MK_REG_DESC("dbreakc0", 0xA0, XT_REG_SPECIAL
, 0),
256 XT_MK_REG_DESC("dbreakc1", 0xA1, XT_REG_SPECIAL
, 0),
257 XT_MK_REG_DESC("cpenable", 0xE0, XT_REG_SPECIAL
, 0),
258 XT_MK_REG_DESC("exccause", 0xE8, XT_REG_SPECIAL
, 0),
259 XT_MK_REG_DESC("debugcause", 0xE9, XT_REG_SPECIAL
, 0),
260 XT_MK_REG_DESC("icount", 0xEC, XT_REG_SPECIAL
, 0),
261 XT_MK_REG_DESC("icountlevel", 0xED, XT_REG_SPECIAL
, 0),
263 /* WARNING: For these registers, regnum points to the
264 * index of the corresponding ARx registers, NOT to
265 * the processor register number! */
266 XT_MK_REG_DESC("a0", XT_REG_IDX_AR0
, XT_REG_RELGEN
, 0),
267 XT_MK_REG_DESC("a1", XT_REG_IDX_AR1
, XT_REG_RELGEN
, 0),
268 XT_MK_REG_DESC("a2", XT_REG_IDX_AR2
, XT_REG_RELGEN
, 0),
269 XT_MK_REG_DESC("a3", XT_REG_IDX_AR3
, XT_REG_RELGEN
, 0),
270 XT_MK_REG_DESC("a4", XT_REG_IDX_AR4
, XT_REG_RELGEN
, 0),
271 XT_MK_REG_DESC("a5", XT_REG_IDX_AR5
, XT_REG_RELGEN
, 0),
272 XT_MK_REG_DESC("a6", XT_REG_IDX_AR6
, XT_REG_RELGEN
, 0),
273 XT_MK_REG_DESC("a7", XT_REG_IDX_AR7
, XT_REG_RELGEN
, 0),
274 XT_MK_REG_DESC("a8", XT_REG_IDX_AR8
, XT_REG_RELGEN
, 0),
275 XT_MK_REG_DESC("a9", XT_REG_IDX_AR9
, XT_REG_RELGEN
, 0),
276 XT_MK_REG_DESC("a10", XT_REG_IDX_AR10
, XT_REG_RELGEN
, 0),
277 XT_MK_REG_DESC("a11", XT_REG_IDX_AR11
, XT_REG_RELGEN
, 0),
278 XT_MK_REG_DESC("a12", XT_REG_IDX_AR12
, XT_REG_RELGEN
, 0),
279 XT_MK_REG_DESC("a13", XT_REG_IDX_AR13
, XT_REG_RELGEN
, 0),
280 XT_MK_REG_DESC("a14", XT_REG_IDX_AR14
, XT_REG_RELGEN
, 0),
281 XT_MK_REG_DESC("a15", XT_REG_IDX_AR15
, XT_REG_RELGEN
, 0),
285 * Types of memory used at xtensa target
287 enum xtensa_mem_region_type
{
288 XTENSA_MEM_REG_IROM
= 0x0,
297 /* Register definition as union for list allocation */
298 union xtensa_reg_val_u
{
299 xtensa_reg_val_t val
;
303 static const struct xtensa_keyval_info_s xt_qerr
[XT_QERR_NUM
] = {
304 { .chrval
= "E00", .intval
= ERROR_FAIL
},
305 { .chrval
= "E01", .intval
= ERROR_FAIL
},
306 { .chrval
= "E02", .intval
= ERROR_COMMAND_ARGUMENT_INVALID
},
307 { .chrval
= "E03", .intval
= ERROR_FAIL
},
310 /* Set to true for extra debug logging */
311 static const bool xtensa_extra_debug_log
;
314 * Gets a config for the specific mem type
316 static inline const struct xtensa_local_mem_config
*xtensa_get_mem_config(
317 struct xtensa
*xtensa
,
318 enum xtensa_mem_region_type type
)
321 case XTENSA_MEM_REG_IROM
:
322 return &xtensa
->core_config
->irom
;
323 case XTENSA_MEM_REG_IRAM
:
324 return &xtensa
->core_config
->iram
;
325 case XTENSA_MEM_REG_DROM
:
326 return &xtensa
->core_config
->drom
;
327 case XTENSA_MEM_REG_DRAM
:
328 return &xtensa
->core_config
->dram
;
329 case XTENSA_MEM_REG_SRAM
:
330 return &xtensa
->core_config
->sram
;
331 case XTENSA_MEM_REG_SROM
:
332 return &xtensa
->core_config
->srom
;
339 * Extracts an exact xtensa_local_mem_region_config from xtensa_local_mem_config
340 * for a given address
341 * Returns NULL if nothing found
343 static inline const struct xtensa_local_mem_region_config
*xtensa_memory_region_find(
344 const struct xtensa_local_mem_config
*mem
,
345 target_addr_t address
)
347 for (unsigned int i
= 0; i
< mem
->count
; i
++) {
348 const struct xtensa_local_mem_region_config
*region
= &mem
->regions
[i
];
349 if (address
>= region
->base
&& address
< (region
->base
+ region
->size
))
356 * Returns a corresponding xtensa_local_mem_region_config from the xtensa target
357 * for a given address
358 * Returns NULL if nothing found
360 static inline const struct xtensa_local_mem_region_config
*xtensa_target_memory_region_find(
361 struct xtensa
*xtensa
,
362 target_addr_t address
)
364 const struct xtensa_local_mem_region_config
*result
;
365 const struct xtensa_local_mem_config
*mcgf
;
366 for (unsigned int mtype
= 0; mtype
< XTENSA_MEM_REGS_NUM
; mtype
++) {
367 mcgf
= xtensa_get_mem_config(xtensa
, mtype
);
368 result
= xtensa_memory_region_find(mcgf
, address
);
375 static inline bool xtensa_is_cacheable(const struct xtensa_cache_config
*cache
,
376 const struct xtensa_local_mem_config
*mem
,
377 target_addr_t address
)
381 return xtensa_memory_region_find(mem
, address
);
384 static inline bool xtensa_is_icacheable(struct xtensa
*xtensa
, target_addr_t address
)
386 return xtensa_is_cacheable(&xtensa
->core_config
->icache
, &xtensa
->core_config
->iram
, address
) ||
387 xtensa_is_cacheable(&xtensa
->core_config
->icache
, &xtensa
->core_config
->irom
, address
) ||
388 xtensa_is_cacheable(&xtensa
->core_config
->icache
, &xtensa
->core_config
->sram
, address
) ||
389 xtensa_is_cacheable(&xtensa
->core_config
->icache
, &xtensa
->core_config
->srom
, address
);
392 static inline bool xtensa_is_dcacheable(struct xtensa
*xtensa
, target_addr_t address
)
394 return xtensa_is_cacheable(&xtensa
->core_config
->dcache
, &xtensa
->core_config
->dram
, address
) ||
395 xtensa_is_cacheable(&xtensa
->core_config
->dcache
, &xtensa
->core_config
->drom
, address
) ||
396 xtensa_is_cacheable(&xtensa
->core_config
->dcache
, &xtensa
->core_config
->sram
, address
) ||
397 xtensa_is_cacheable(&xtensa
->core_config
->dcache
, &xtensa
->core_config
->srom
, address
);
400 static int xtensa_core_reg_get(struct reg
*reg
)
402 /* We don't need this because we read all registers on halt anyway. */
403 struct xtensa
*xtensa
= (struct xtensa
*)reg
->arch_info
;
404 struct target
*target
= xtensa
->target
;
406 if (target
->state
!= TARGET_HALTED
)
407 return ERROR_TARGET_NOT_HALTED
;
409 if (strncmp(reg
->name
, "?0x", 3) == 0) {
410 unsigned int regnum
= strtoul(reg
->name
+ 1, 0, 0);
411 LOG_WARNING("Read unknown register 0x%04x ignored", regnum
);
414 return ERROR_COMMAND_ARGUMENT_INVALID
;
419 static int xtensa_core_reg_set(struct reg
*reg
, uint8_t *buf
)
421 struct xtensa
*xtensa
= (struct xtensa
*)reg
->arch_info
;
422 struct target
*target
= xtensa
->target
;
424 assert(reg
->size
<= 64 && "up to 64-bit regs are supported only!");
425 if (target
->state
!= TARGET_HALTED
)
426 return ERROR_TARGET_NOT_HALTED
;
429 if (strncmp(reg
->name
, "?0x", 3) == 0) {
430 unsigned int regnum
= strtoul(reg
->name
+ 1, 0, 0);
431 LOG_WARNING("Write unknown register 0x%04x ignored", regnum
);
434 return ERROR_COMMAND_ARGUMENT_INVALID
;
437 buf_cpy(buf
, reg
->value
, reg
->size
);
439 if (xtensa
->core_config
->windowed
) {
440 /* If the user updates a potential scratch register, track for conflicts */
441 for (enum xtensa_ar_scratch_set_e s
= 0; s
< XT_AR_SCRATCH_NUM
; s
++) {
442 if (strcmp(reg
->name
, xtensa
->scratch_ars
[s
].chrval
) == 0) {
443 LOG_DEBUG("Scratch reg %s [0x%08" PRIx32
"] set from gdb", reg
->name
,
444 buf_get_u32(reg
->value
, 0, 32));
445 LOG_DEBUG("scratch_ars mapping: a3/%s, a4/%s",
446 xtensa
->scratch_ars
[XT_AR_SCRATCH_AR3
].chrval
,
447 xtensa
->scratch_ars
[XT_AR_SCRATCH_AR4
].chrval
);
448 xtensa
->scratch_ars
[s
].intval
= true;
459 static const struct reg_arch_type xtensa_reg_type
= {
460 .get
= xtensa_core_reg_get
,
461 .set
= xtensa_core_reg_set
,
464 /* Convert a register index that's indexed relative to windowbase, to the real address. */
465 static enum xtensa_reg_id
xtensa_windowbase_offset_to_canonical(struct xtensa
*xtensa
,
466 enum xtensa_reg_id reg_idx
,
470 if (reg_idx
>= XT_REG_IDX_AR0
&& reg_idx
<= XT_REG_IDX_ARLAST
) {
471 idx
= reg_idx
- XT_REG_IDX_AR0
;
472 } else if (reg_idx
>= XT_REG_IDX_A0
&& reg_idx
<= XT_REG_IDX_A15
) {
473 idx
= reg_idx
- XT_REG_IDX_A0
;
475 LOG_ERROR("Error: can't convert register %d to non-windowbased register!", reg_idx
);
478 return ((idx
+ windowbase
* 4) & (xtensa
->core_config
->aregs_num
- 1)) + XT_REG_IDX_AR0
;
481 static enum xtensa_reg_id
xtensa_canonical_to_windowbase_offset(struct xtensa
*xtensa
,
482 enum xtensa_reg_id reg_idx
,
485 return xtensa_windowbase_offset_to_canonical(xtensa
, reg_idx
, -windowbase
);
488 static void xtensa_mark_register_dirty(struct xtensa
*xtensa
, enum xtensa_reg_id reg_idx
)
490 struct reg
*reg_list
= xtensa
->core_cache
->reg_list
;
491 reg_list
[reg_idx
].dirty
= true;
494 static void xtensa_queue_exec_ins(struct xtensa
*xtensa
, uint32_t ins
)
496 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DIR0EXEC
, ins
);
499 static void xtensa_queue_exec_ins_wide(struct xtensa
*xtensa
, uint8_t *ops
, uint8_t oplen
)
501 const int max_oplen
= 64; /* 8 DIRx regs: max width 64B */
502 if ((oplen
> 0) && (oplen
<= max_oplen
)) {
503 uint8_t ops_padded
[max_oplen
];
504 memcpy(ops_padded
, ops
, oplen
);
505 memset(ops_padded
+ oplen
, 0, max_oplen
- oplen
);
506 unsigned int oplenw
= DIV_ROUND_UP(oplen
, sizeof(uint32_t));
507 for (int32_t i
= oplenw
- 1; i
> 0; i
--)
508 xtensa_queue_dbg_reg_write(xtensa
,
510 target_buffer_get_u32(xtensa
->target
, &ops_padded
[sizeof(uint32_t)*i
]));
511 /* Write DIR0EXEC last */
512 xtensa_queue_dbg_reg_write(xtensa
,
514 target_buffer_get_u32(xtensa
->target
, &ops_padded
[0]));
518 static int xtensa_queue_pwr_reg_write(struct xtensa
*xtensa
, unsigned int reg
, uint32_t data
)
520 struct xtensa_debug_module
*dm
= &xtensa
->dbg_mod
;
521 return dm
->pwr_ops
->queue_reg_write(dm
, reg
, data
);
524 /* NOTE: Assumes A3 has already been saved */
525 static int xtensa_window_state_save(struct target
*target
, uint32_t *woe
)
527 struct xtensa
*xtensa
= target_to_xtensa(target
);
531 if (xtensa
->core_config
->windowed
) {
532 /* Save PS (LX) and disable window overflow exceptions prior to AR save */
533 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_PS
, XT_REG_A3
));
534 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
535 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, woe_buf
);
536 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
537 if (res
!= ERROR_OK
) {
538 LOG_ERROR("Failed to read PS (%d)!", res
);
541 xtensa_core_status_check(target
);
542 *woe
= buf_get_u32(woe_buf
, 0, 32);
543 woe_dis
= *woe
& ~XT_PS_WOE_MSK
;
544 LOG_DEBUG("Clearing PS.WOE (0x%08" PRIx32
" -> 0x%08" PRIx32
")", *woe
, woe_dis
);
545 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, woe_dis
);
546 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
547 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_PS
, XT_REG_A3
));
552 /* NOTE: Assumes A3 has already been saved */
553 static void xtensa_window_state_restore(struct target
*target
, uint32_t woe
)
555 struct xtensa
*xtensa
= target_to_xtensa(target
);
556 if (xtensa
->core_config
->windowed
) {
557 /* Restore window overflow exception state */
558 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, woe
);
559 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
560 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_PS
, XT_REG_A3
));
561 LOG_DEBUG("Restored PS.WOE (0x%08" PRIx32
")", woe
);
565 static bool xtensa_reg_is_readable(int flags
, int cpenable
)
567 if (flags
& XT_REGF_NOREAD
)
569 if ((flags
& XT_REGF_COPROC0
) && (cpenable
& BIT(0)) == 0)
574 static bool xtensa_scratch_regs_fixup(struct xtensa
*xtensa
, struct reg
*reg_list
, int i
, int j
, int a_idx
, int ar_idx
)
576 int a_name
= (a_idx
== XT_AR_SCRATCH_A3
) ? 3 : 4;
577 if (xtensa
->scratch_ars
[a_idx
].intval
&& !xtensa
->scratch_ars
[ar_idx
].intval
) {
578 LOG_DEBUG("AR conflict: a%d -> ar%d", a_name
, j
- XT_REG_IDX_AR0
);
579 memcpy(reg_list
[j
].value
, reg_list
[i
].value
, sizeof(xtensa_reg_val_t
));
581 LOG_DEBUG("AR conflict: ar%d -> a%d", j
- XT_REG_IDX_AR0
, a_name
);
582 memcpy(reg_list
[i
].value
, reg_list
[j
].value
, sizeof(xtensa_reg_val_t
));
584 return xtensa
->scratch_ars
[a_idx
].intval
&& xtensa
->scratch_ars
[ar_idx
].intval
;
587 static int xtensa_write_dirty_registers(struct target
*target
)
589 struct xtensa
*xtensa
= target_to_xtensa(target
);
591 xtensa_reg_val_t regval
, windowbase
= 0;
592 bool scratch_reg_dirty
= false, delay_cpenable
= false;
593 struct reg
*reg_list
= xtensa
->core_cache
->reg_list
;
594 unsigned int reg_list_size
= xtensa
->core_cache
->num_regs
;
595 bool preserve_a3
= false;
597 xtensa_reg_val_t a3
= 0, woe
;
599 LOG_TARGET_DEBUG(target
, "start");
601 /* We need to write the dirty registers in the cache list back to the processor.
602 * Start by writing the SFR/user registers. */
603 for (unsigned int i
= 0; i
< reg_list_size
; i
++) {
604 struct xtensa_reg_desc
*rlist
= (i
< XT_NUM_REGS
) ? xtensa_regs
: xtensa
->optregs
;
605 unsigned int ridx
= (i
< XT_NUM_REGS
) ? i
: i
- XT_NUM_REGS
;
606 if (reg_list
[i
].dirty
) {
607 if (rlist
[ridx
].type
== XT_REG_SPECIAL
||
608 rlist
[ridx
].type
== XT_REG_USER
||
609 rlist
[ridx
].type
== XT_REG_FR
) {
610 scratch_reg_dirty
= true;
611 if (i
== XT_REG_IDX_CPENABLE
) {
612 delay_cpenable
= true;
615 regval
= xtensa_reg_get(target
, i
);
616 LOG_TARGET_DEBUG(target
, "Writing back reg %s (%d) val %08" PRIX32
,
620 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, regval
);
621 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
622 if (reg_list
[i
].exist
) {
623 unsigned int reg_num
= rlist
[ridx
].reg_num
;
624 if (rlist
[ridx
].type
== XT_REG_USER
) {
625 xtensa_queue_exec_ins(xtensa
, XT_INS_WUR(xtensa
, reg_num
, XT_REG_A3
));
626 } else if (rlist
[ridx
].type
== XT_REG_FR
) {
627 xtensa_queue_exec_ins(xtensa
, XT_INS_WFR(xtensa
, reg_num
, XT_REG_A3
));
629 if (reg_num
== XT_PC_REG_NUM_VIRTUAL
)
630 /* reg number of PC for debug interrupt depends on NDEBUGLEVEL
633 (XT_PC_REG_NUM_BASE
+
634 xtensa
->core_config
->debug
.irq_level
);
635 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, reg_num
, XT_REG_A3
));
638 reg_list
[i
].dirty
= false;
642 if (scratch_reg_dirty
)
643 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A3
);
644 if (delay_cpenable
) {
645 regval
= xtensa_reg_get(target
, XT_REG_IDX_CPENABLE
);
646 LOG_TARGET_DEBUG(target
, "Writing back reg cpenable (224) val %08" PRIX32
, regval
);
647 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, regval
);
648 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
649 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
,
650 xtensa_regs
[XT_REG_IDX_CPENABLE
].reg_num
,
652 reg_list
[XT_REG_IDX_CPENABLE
].dirty
= false;
655 preserve_a3
= (xtensa
->core_config
->windowed
);
657 /* Save (windowed) A3 for scratch use */
658 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
659 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, a3_buf
);
660 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
663 xtensa_core_status_check(target
);
664 a3
= buf_get_u32(a3_buf
, 0, 32);
667 if (xtensa
->core_config
->windowed
) {
668 res
= xtensa_window_state_save(target
, &woe
);
671 /* Grab the windowbase, we need it. */
672 windowbase
= xtensa_reg_get(target
, XT_REG_IDX_WINDOWBASE
);
673 /* Check if there are mismatches between the ARx and corresponding Ax registers.
674 * When the user sets a register on a windowed config, xt-gdb may set the ARx
675 * register directly. Thus we take ARx as priority over Ax if both are dirty
676 * and it's unclear if the user set one over the other explicitly.
678 for (unsigned int i
= XT_REG_IDX_A0
; i
<= XT_REG_IDX_A15
; i
++) {
679 unsigned int j
= xtensa_windowbase_offset_to_canonical(xtensa
, i
, windowbase
);
680 if (reg_list
[i
].dirty
&& reg_list
[j
].dirty
) {
681 if (memcmp(reg_list
[i
].value
, reg_list
[j
].value
, sizeof(xtensa_reg_val_t
)) != 0) {
682 bool show_warning
= true;
683 if (i
== XT_REG_IDX_A3
)
684 show_warning
= xtensa_scratch_regs_fixup(xtensa
,
685 reg_list
, i
, j
, XT_AR_SCRATCH_A3
, XT_AR_SCRATCH_AR3
);
686 else if (i
== XT_REG_IDX_A4
)
687 show_warning
= xtensa_scratch_regs_fixup(xtensa
,
688 reg_list
, i
, j
, XT_AR_SCRATCH_A4
, XT_AR_SCRATCH_AR4
);
691 "Warning: Both A%d [0x%08" PRIx32
692 "] as well as its underlying physical register "
693 "(AR%d) [0x%08" PRIx32
"] are dirty and differ in value",
695 buf_get_u32(reg_list
[i
].value
, 0, 32),
697 buf_get_u32(reg_list
[j
].value
, 0, 32));
704 for (unsigned int i
= 0; i
< 16; i
++) {
705 if (reg_list
[XT_REG_IDX_A0
+ i
].dirty
) {
706 regval
= xtensa_reg_get(target
, XT_REG_IDX_A0
+ i
);
707 LOG_TARGET_DEBUG(target
, "Writing back reg %s value %08" PRIX32
", num =%i",
708 xtensa_regs
[XT_REG_IDX_A0
+ i
].name
,
710 xtensa_regs
[XT_REG_IDX_A0
+ i
].reg_num
);
711 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, regval
);
712 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, i
));
713 reg_list
[XT_REG_IDX_A0
+ i
].dirty
= false;
715 /* Avoid stomping A3 during restore at end of function */
721 if (xtensa
->core_config
->windowed
) {
722 /* Now write AR registers */
723 for (unsigned int j
= 0; j
< XT_REG_IDX_ARLAST
; j
+= 16) {
724 /* Write the 16 registers we can see */
725 for (unsigned int i
= 0; i
< 16; i
++) {
726 if (i
+ j
< xtensa
->core_config
->aregs_num
) {
727 enum xtensa_reg_id realadr
=
728 xtensa_windowbase_offset_to_canonical(xtensa
, XT_REG_IDX_AR0
+ i
+ j
,
730 /* Write back any dirty un-windowed registers */
731 if (reg_list
[realadr
].dirty
) {
732 regval
= xtensa_reg_get(target
, realadr
);
735 "Writing back reg %s value %08" PRIX32
", num =%i",
736 xtensa_regs
[realadr
].name
,
738 xtensa_regs
[realadr
].reg_num
);
739 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, regval
);
740 xtensa_queue_exec_ins(xtensa
,
741 XT_INS_RSR(xtensa
, XT_SR_DDR
,
742 xtensa_regs
[XT_REG_IDX_AR0
+ i
].reg_num
));
743 reg_list
[realadr
].dirty
= false;
745 /* Avoid stomping AR during A3 restore at end of function */
750 /*Now rotate the window so we'll see the next 16 registers. The final rotate
751 * will wraparound, */
752 /*leaving us in the state we were. */
753 xtensa_queue_exec_ins(xtensa
, XT_INS_ROTW(xtensa
, 4));
756 xtensa_window_state_restore(target
, woe
);
758 for (enum xtensa_ar_scratch_set_e s
= 0; s
< XT_AR_SCRATCH_NUM
; s
++)
759 xtensa
->scratch_ars
[s
].intval
= false;
763 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, a3
);
764 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
767 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
768 xtensa_core_status_check(target
);
773 static inline bool xtensa_is_stopped(struct target
*target
)
775 struct xtensa
*xtensa
= target_to_xtensa(target
);
776 return xtensa
->dbg_mod
.core_status
.dsr
& OCDDSR_STOPPED
;
779 int xtensa_examine(struct target
*target
)
781 struct xtensa
*xtensa
= target_to_xtensa(target
);
782 unsigned int cmd
= PWRCTL_DEBUGWAKEUP(xtensa
) | PWRCTL_MEMWAKEUP(xtensa
) | PWRCTL_COREWAKEUP(xtensa
);
784 LOG_DEBUG("coreid = %d", target
->coreid
);
786 if (xtensa
->core_config
->core_type
== XT_UNDEF
) {
787 LOG_ERROR("XTensa core not configured; is xtensa-core-openocd.cfg missing?");
791 xtensa_queue_pwr_reg_write(xtensa
, XDMREG_PWRCTL
, cmd
);
792 xtensa_queue_pwr_reg_write(xtensa
, XDMREG_PWRCTL
, cmd
| PWRCTL_JTAGDEBUGUSE(xtensa
));
793 xtensa_dm_queue_enable(&xtensa
->dbg_mod
);
794 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
795 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
798 if (!xtensa_dm_is_online(&xtensa
->dbg_mod
)) {
799 LOG_ERROR("Unexpected OCD_ID = %08" PRIx32
, xtensa
->dbg_mod
.device_id
);
800 return ERROR_TARGET_FAILURE
;
802 LOG_DEBUG("OCD_ID = %08" PRIx32
, xtensa
->dbg_mod
.device_id
);
803 if (!target_was_examined(target
))
804 target_set_examined(target
);
805 xtensa_smpbreak_write(xtensa
, xtensa
->smp_break
);
809 int xtensa_wakeup(struct target
*target
)
811 struct xtensa
*xtensa
= target_to_xtensa(target
);
812 unsigned int cmd
= PWRCTL_DEBUGWAKEUP(xtensa
) | PWRCTL_MEMWAKEUP(xtensa
) | PWRCTL_COREWAKEUP(xtensa
);
814 if (xtensa
->reset_asserted
)
815 cmd
|= PWRCTL_CORERESET(xtensa
);
816 xtensa_queue_pwr_reg_write(xtensa
, XDMREG_PWRCTL
, cmd
);
817 /* TODO: can we join this with the write above? */
818 xtensa_queue_pwr_reg_write(xtensa
, XDMREG_PWRCTL
, cmd
| PWRCTL_JTAGDEBUGUSE(xtensa
));
819 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
820 return xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
823 int xtensa_smpbreak_write(struct xtensa
*xtensa
, uint32_t set
)
825 uint32_t dsr_data
= 0x00110000;
826 uint32_t clear
= (set
| OCDDCR_ENABLEOCD
) ^
827 (OCDDCR_BREAKINEN
| OCDDCR_BREAKOUTEN
| OCDDCR_RUNSTALLINEN
|
828 OCDDCR_DEBUGMODEOUTEN
| OCDDCR_ENABLEOCD
);
830 LOG_TARGET_DEBUG(xtensa
->target
, "write smpbreak set=0x%" PRIx32
" clear=0x%" PRIx32
, set
, clear
);
831 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DCRSET
, set
| OCDDCR_ENABLEOCD
);
832 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DCRCLR
, clear
);
833 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DSR
, dsr_data
);
834 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
835 return xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
838 int xtensa_smpbreak_set(struct target
*target
, uint32_t set
)
840 struct xtensa
*xtensa
= target_to_xtensa(target
);
843 xtensa
->smp_break
= set
;
844 if (target_was_examined(target
))
845 res
= xtensa_smpbreak_write(xtensa
, xtensa
->smp_break
);
846 LOG_TARGET_DEBUG(target
, "set smpbreak=%" PRIx32
", state=%i", set
, target
->state
);
850 int xtensa_smpbreak_read(struct xtensa
*xtensa
, uint32_t *val
)
852 uint8_t dcr_buf
[sizeof(uint32_t)];
854 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DCRSET
, dcr_buf
);
855 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
856 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
857 *val
= buf_get_u32(dcr_buf
, 0, 32);
862 int xtensa_smpbreak_get(struct target
*target
, uint32_t *val
)
864 struct xtensa
*xtensa
= target_to_xtensa(target
);
865 *val
= xtensa
->smp_break
;
869 static inline xtensa_reg_val_t
xtensa_reg_get_value(struct reg
*reg
)
871 return buf_get_u32(reg
->value
, 0, 32);
874 static inline void xtensa_reg_set_value(struct reg
*reg
, xtensa_reg_val_t value
)
876 buf_set_u32(reg
->value
, 0, 32, value
);
880 int xtensa_core_status_check(struct target
*target
)
882 struct xtensa
*xtensa
= target_to_xtensa(target
);
883 int res
, needclear
= 0;
885 xtensa_dm_core_status_read(&xtensa
->dbg_mod
);
886 xtensa_dsr_t dsr
= xtensa_dm_core_status_get(&xtensa
->dbg_mod
);
887 LOG_TARGET_DEBUG(target
, "DSR (%08" PRIX32
")", dsr
);
888 if (dsr
& OCDDSR_EXECBUSY
) {
889 if (!xtensa
->suppress_dsr_errors
)
890 LOG_TARGET_ERROR(target
, "DSR (%08" PRIX32
") indicates target still busy!", dsr
);
893 if (dsr
& OCDDSR_EXECEXCEPTION
) {
894 if (!xtensa
->suppress_dsr_errors
)
895 LOG_TARGET_ERROR(target
,
896 "DSR (%08" PRIX32
") indicates DIR instruction generated an exception!",
900 if (dsr
& OCDDSR_EXECOVERRUN
) {
901 if (!xtensa
->suppress_dsr_errors
)
902 LOG_TARGET_ERROR(target
,
903 "DSR (%08" PRIX32
") indicates DIR instruction generated an overrun!",
908 res
= xtensa_dm_core_status_clear(&xtensa
->dbg_mod
,
909 OCDDSR_EXECEXCEPTION
| OCDDSR_EXECOVERRUN
);
910 if (res
!= ERROR_OK
&& !xtensa
->suppress_dsr_errors
)
911 LOG_TARGET_ERROR(target
, "clearing DSR failed!");
917 xtensa_reg_val_t
xtensa_reg_get(struct target
*target
, enum xtensa_reg_id reg_id
)
919 struct xtensa
*xtensa
= target_to_xtensa(target
);
920 struct reg
*reg
= &xtensa
->core_cache
->reg_list
[reg_id
];
921 return xtensa_reg_get_value(reg
);
924 void xtensa_reg_set(struct target
*target
, enum xtensa_reg_id reg_id
, xtensa_reg_val_t value
)
926 struct xtensa
*xtensa
= target_to_xtensa(target
);
927 struct reg
*reg
= &xtensa
->core_cache
->reg_list
[reg_id
];
928 if (xtensa_reg_get_value(reg
) == value
)
930 xtensa_reg_set_value(reg
, value
);
933 /* Set Ax (XT_REG_RELGEN) register along with its underlying ARx (XT_REG_GENERAL) */
934 void xtensa_reg_set_deep_relgen(struct target
*target
, enum xtensa_reg_id a_idx
, xtensa_reg_val_t value
)
936 struct xtensa
*xtensa
= target_to_xtensa(target
);
937 uint32_t windowbase
= (xtensa
->core_config
->windowed
?
938 xtensa_reg_get(target
, XT_REG_IDX_WINDOWBASE
) : 0);
939 int ar_idx
= xtensa_windowbase_offset_to_canonical(xtensa
, a_idx
, windowbase
);
940 xtensa_reg_set(target
, a_idx
, value
);
941 xtensa_reg_set(target
, ar_idx
, value
);
944 /* Read cause for entering halted state; return bitmask in DEBUGCAUSE_* format */
945 uint32_t xtensa_cause_get(struct target
*target
)
947 return xtensa_reg_get(target
, XT_REG_IDX_DEBUGCAUSE
);
950 void xtensa_cause_clear(struct target
*target
)
952 struct xtensa
*xtensa
= target_to_xtensa(target
);
953 xtensa_reg_set(target
, XT_REG_IDX_DEBUGCAUSE
, 0);
954 xtensa
->core_cache
->reg_list
[XT_REG_IDX_DEBUGCAUSE
].dirty
= false;
957 int xtensa_assert_reset(struct target
*target
)
959 struct xtensa
*xtensa
= target_to_xtensa(target
);
961 LOG_TARGET_DEBUG(target
, "target_number=%i, begin", target
->target_number
);
962 xtensa_queue_pwr_reg_write(xtensa
,
964 PWRCTL_JTAGDEBUGUSE(xtensa
) | PWRCTL_DEBUGWAKEUP(xtensa
) | PWRCTL_MEMWAKEUP(xtensa
) |
965 PWRCTL_COREWAKEUP(xtensa
) | PWRCTL_CORERESET(xtensa
));
966 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
967 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
971 /* registers are now invalid */
972 xtensa
->reset_asserted
= true;
973 register_cache_invalidate(xtensa
->core_cache
);
974 target
->state
= TARGET_RESET
;
978 int xtensa_deassert_reset(struct target
*target
)
980 struct xtensa
*xtensa
= target_to_xtensa(target
);
982 LOG_TARGET_DEBUG(target
, "halt=%d", target
->reset_halt
);
983 if (target
->reset_halt
)
984 xtensa_queue_dbg_reg_write(xtensa
,
986 OCDDCR_ENABLEOCD
| OCDDCR_DEBUGINTERRUPT
);
987 xtensa_queue_pwr_reg_write(xtensa
,
989 PWRCTL_JTAGDEBUGUSE(xtensa
) | PWRCTL_DEBUGWAKEUP(xtensa
) | PWRCTL_MEMWAKEUP(xtensa
) |
990 PWRCTL_COREWAKEUP(xtensa
));
991 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
992 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
995 target
->state
= TARGET_RUNNING
;
996 xtensa
->reset_asserted
= false;
1000 int xtensa_soft_reset_halt(struct target
*target
)
1002 LOG_TARGET_DEBUG(target
, "begin");
1003 return xtensa_assert_reset(target
);
1006 int xtensa_fetch_all_regs(struct target
*target
)
1008 struct xtensa
*xtensa
= target_to_xtensa(target
);
1009 struct reg
*reg_list
= xtensa
->core_cache
->reg_list
;
1010 unsigned int reg_list_size
= xtensa
->core_cache
->num_regs
;
1011 xtensa_reg_val_t cpenable
= 0, windowbase
= 0, a3
;
1014 bool debug_dsrs
= !xtensa
->regs_fetched
|| LOG_LEVEL_IS(LOG_LVL_DEBUG
);
1016 union xtensa_reg_val_u
*regvals
= calloc(reg_list_size
, sizeof(*regvals
));
1018 LOG_TARGET_ERROR(target
, "unable to allocate memory for regvals!");
1021 union xtensa_reg_val_u
*dsrs
= calloc(reg_list_size
, sizeof(*dsrs
));
1023 LOG_TARGET_ERROR(target
, "unable to allocate memory for dsrs!");
1028 LOG_TARGET_DEBUG(target
, "start");
1030 /* Save (windowed) A3 so cache matches physical AR3; A3 usable as scratch */
1031 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1032 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, a3_buf
);
1033 int res
= xtensa_window_state_save(target
, &woe
);
1034 if (res
!= ERROR_OK
)
1035 goto xtensa_fetch_all_regs_done
;
1037 /* Assume the CPU has just halted. We now want to fill the register cache with all the
1038 * register contents GDB needs. For speed, we pipeline all the read operations, execute them
1039 * in one go, then sort everything out from the regvals variable. */
1041 /* Start out with AREGS; we can reach those immediately. Grab them per 16 registers. */
1042 for (unsigned int j
= 0; j
< XT_AREGS_NUM_MAX
; j
+= 16) {
1043 /*Grab the 16 registers we can see */
1044 for (unsigned int i
= 0; i
< 16; i
++) {
1045 if (i
+ j
< xtensa
->core_config
->aregs_num
) {
1046 xtensa_queue_exec_ins(xtensa
,
1047 XT_INS_WSR(xtensa
, XT_SR_DDR
, xtensa_regs
[XT_REG_IDX_AR0
+ i
].reg_num
));
1048 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
,
1049 regvals
[XT_REG_IDX_AR0
+ i
+ j
].buf
);
1051 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DSR
,
1052 dsrs
[XT_REG_IDX_AR0
+ i
+ j
].buf
);
1055 if (xtensa
->core_config
->windowed
)
1056 /* Now rotate the window so we'll see the next 16 registers. The final rotate
1057 * will wraparound, */
1058 /* leaving us in the state we were. */
1059 xtensa_queue_exec_ins(xtensa
, XT_INS_ROTW(xtensa
, 4));
1061 xtensa_window_state_restore(target
, woe
);
1063 if (xtensa
->core_config
->coproc
) {
1064 /* As the very first thing after AREGS, go grab CPENABLE */
1065 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, xtensa_regs
[XT_REG_IDX_CPENABLE
].reg_num
, XT_REG_A3
));
1066 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1067 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, regvals
[XT_REG_IDX_CPENABLE
].buf
);
1069 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1070 if (res
!= ERROR_OK
) {
1071 LOG_ERROR("Failed to read ARs (%d)!", res
);
1072 goto xtensa_fetch_all_regs_done
;
1074 xtensa_core_status_check(target
);
1076 a3
= buf_get_u32(a3_buf
, 0, 32);
1078 if (xtensa
->core_config
->coproc
) {
1079 cpenable
= buf_get_u32(regvals
[XT_REG_IDX_CPENABLE
].buf
, 0, 32);
1081 /* Enable all coprocessors (by setting all bits in CPENABLE) so we can read FP and user registers. */
1082 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, 0xffffffff);
1083 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1084 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, xtensa_regs
[XT_REG_IDX_CPENABLE
].reg_num
, XT_REG_A3
));
1086 /* Save CPENABLE; flag dirty later (when regcache updated) so original value is always restored */
1087 LOG_TARGET_DEBUG(target
, "CPENABLE: was 0x%" PRIx32
", all enabled", cpenable
);
1088 xtensa_reg_set(target
, XT_REG_IDX_CPENABLE
, cpenable
);
1090 /* We're now free to use any of A0-A15 as scratch registers
1091 * Grab the SFRs and user registers first. We use A3 as a scratch register. */
1092 for (unsigned int i
= 0; i
< reg_list_size
; i
++) {
1093 struct xtensa_reg_desc
*rlist
= (i
< XT_NUM_REGS
) ? xtensa_regs
: xtensa
->optregs
;
1094 unsigned int ridx
= (i
< XT_NUM_REGS
) ? i
: i
- XT_NUM_REGS
;
1095 if (xtensa_reg_is_readable(rlist
[ridx
].flags
, cpenable
) && rlist
[ridx
].exist
) {
1096 bool reg_fetched
= true;
1097 unsigned int reg_num
= rlist
[ridx
].reg_num
;
1098 switch (rlist
[ridx
].type
) {
1100 xtensa_queue_exec_ins(xtensa
, XT_INS_RUR(xtensa
, reg_num
, XT_REG_A3
));
1103 xtensa_queue_exec_ins(xtensa
, XT_INS_RFR(xtensa
, reg_num
, XT_REG_A3
));
1105 case XT_REG_SPECIAL
:
1106 if (reg_num
== XT_PC_REG_NUM_VIRTUAL
) {
1107 /* reg number of PC for debug interrupt depends on NDEBUGLEVEL */
1108 reg_num
= (XT_PC_REG_NUM_BASE
+ xtensa
->core_config
->debug
.irq_level
);
1109 } else if (reg_num
== xtensa_regs
[XT_REG_IDX_PS
].reg_num
) {
1110 /* reg number of PS for debug interrupt depends on NDEBUGLEVEL */
1111 reg_num
= (XT_PS_REG_NUM_BASE
+ xtensa
->core_config
->debug
.irq_level
);
1112 } else if (reg_num
== xtensa_regs
[XT_REG_IDX_CPENABLE
].reg_num
) {
1113 /* CPENABLE already read/updated; don't re-read */
1114 reg_fetched
= false;
1117 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, reg_num
, XT_REG_A3
));
1120 reg_fetched
= false;
1123 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1124 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, regvals
[i
].buf
);
1126 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DSR
, dsrs
[i
].buf
);
1130 /* Ok, send the whole mess to the CPU. */
1131 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1132 if (res
!= ERROR_OK
) {
1133 LOG_ERROR("Failed to fetch AR regs!");
1134 goto xtensa_fetch_all_regs_done
;
1136 xtensa_core_status_check(target
);
1139 /* DSR checking: follows order in which registers are requested. */
1140 for (unsigned int i
= 0; i
< reg_list_size
; i
++) {
1141 struct xtensa_reg_desc
*rlist
= (i
< XT_NUM_REGS
) ? xtensa_regs
: xtensa
->optregs
;
1142 unsigned int ridx
= (i
< XT_NUM_REGS
) ? i
: i
- XT_NUM_REGS
;
1143 if (xtensa_reg_is_readable(rlist
[ridx
].flags
, cpenable
) && rlist
[ridx
].exist
&&
1144 (rlist
[ridx
].type
!= XT_REG_DEBUG
) &&
1145 (rlist
[ridx
].type
!= XT_REG_RELGEN
) &&
1146 (rlist
[ridx
].type
!= XT_REG_TIE
) &&
1147 (rlist
[ridx
].type
!= XT_REG_OTHER
)) {
1148 if (buf_get_u32(dsrs
[i
].buf
, 0, 32) & OCDDSR_EXECEXCEPTION
) {
1149 LOG_ERROR("Exception reading %s!", reg_list
[i
].name
);
1151 goto xtensa_fetch_all_regs_done
;
1157 if (xtensa
->core_config
->windowed
)
1158 /* We need the windowbase to decode the general addresses. */
1159 windowbase
= buf_get_u32(regvals
[XT_REG_IDX_WINDOWBASE
].buf
, 0, 32);
1160 /* Decode the result and update the cache. */
1161 for (unsigned int i
= 0; i
< reg_list_size
; i
++) {
1162 struct xtensa_reg_desc
*rlist
= (i
< XT_NUM_REGS
) ? xtensa_regs
: xtensa
->optregs
;
1163 unsigned int ridx
= (i
< XT_NUM_REGS
) ? i
: i
- XT_NUM_REGS
;
1164 if (xtensa_reg_is_readable(rlist
[ridx
].flags
, cpenable
) && rlist
[ridx
].exist
) {
1165 if ((xtensa
->core_config
->windowed
) && (rlist
[ridx
].type
== XT_REG_GENERAL
)) {
1166 /* The 64-value general register set is read from (windowbase) on down.
1167 * We need to get the real register address by subtracting windowbase and
1168 * wrapping around. */
1169 enum xtensa_reg_id realadr
= xtensa_canonical_to_windowbase_offset(xtensa
, i
,
1171 buf_cpy(regvals
[realadr
].buf
, reg_list
[i
].value
, reg_list
[i
].size
);
1172 } else if (rlist
[ridx
].type
== XT_REG_RELGEN
) {
1173 buf_cpy(regvals
[rlist
[ridx
].reg_num
].buf
, reg_list
[i
].value
, reg_list
[i
].size
);
1174 if (xtensa_extra_debug_log
) {
1175 xtensa_reg_val_t regval
= buf_get_u32(regvals
[rlist
[ridx
].reg_num
].buf
, 0, 32);
1176 LOG_DEBUG("%s = 0x%x", rlist
[ridx
].name
, regval
);
1179 xtensa_reg_val_t regval
= buf_get_u32(regvals
[i
].buf
, 0, 32);
1180 bool is_dirty
= (i
== XT_REG_IDX_CPENABLE
);
1181 if (xtensa_extra_debug_log
)
1182 LOG_INFO("Register %s: 0x%X", reg_list
[i
].name
, regval
);
1183 xtensa_reg_set(target
, i
, regval
);
1184 reg_list
[i
].dirty
= is_dirty
; /*always do this _after_ xtensa_reg_set! */
1186 reg_list
[i
].valid
= true;
1188 if ((rlist
[ridx
].flags
& XT_REGF_MASK
) == XT_REGF_NOREAD
) {
1189 /* Report read-only registers all-zero but valid */
1190 reg_list
[i
].valid
= true;
1191 xtensa_reg_set(target
, i
, 0);
1193 reg_list
[i
].valid
= false;
1198 if (xtensa
->core_config
->windowed
) {
1199 /* We have used A3 as a scratch register.
1200 * Windowed configs: restore A3's AR (XT_REG_GENERAL) and and flag for write-back.
1202 enum xtensa_reg_id ar3_idx
= xtensa_windowbase_offset_to_canonical(xtensa
, XT_REG_IDX_A3
, windowbase
);
1203 xtensa_reg_set(target
, ar3_idx
, a3
);
1204 xtensa_mark_register_dirty(xtensa
, ar3_idx
);
1206 /* Reset scratch_ars[] on fetch. .chrval tracks AR mapping and changes w/ window */
1207 sprintf(xtensa
->scratch_ars
[XT_AR_SCRATCH_AR3
].chrval
, "ar%d", ar3_idx
- XT_REG_IDX_AR0
);
1208 enum xtensa_reg_id ar4_idx
= xtensa_windowbase_offset_to_canonical(xtensa
, XT_REG_IDX_A4
, windowbase
);
1209 sprintf(xtensa
->scratch_ars
[XT_AR_SCRATCH_AR4
].chrval
, "ar%d", ar4_idx
- XT_REG_IDX_AR0
);
1210 for (enum xtensa_ar_scratch_set_e s
= 0; s
< XT_AR_SCRATCH_NUM
; s
++)
1211 xtensa
->scratch_ars
[s
].intval
= false;
1214 /* We have used A3 (XT_REG_RELGEN) as a scratch register. Restore and flag for write-back. */
1215 xtensa_reg_set(target
, XT_REG_IDX_A3
, a3
);
1216 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A3
);
1217 xtensa
->regs_fetched
= true;
1218 xtensa_fetch_all_regs_done
:
1224 int xtensa_get_gdb_reg_list(struct target
*target
,
1225 struct reg
**reg_list
[],
1227 enum target_register_class reg_class
)
1229 struct xtensa
*xtensa
= target_to_xtensa(target
);
1230 unsigned int num_regs
;
1232 if (reg_class
== REG_CLASS_GENERAL
) {
1233 if ((xtensa
->genpkt_regs_num
== 0) || !xtensa
->contiguous_regs_list
) {
1234 LOG_ERROR("reg_class %d unhandled; 'xtgregs' not found", reg_class
);
1237 num_regs
= xtensa
->genpkt_regs_num
;
1239 /* Determine whether to return a contiguous or sparse register map */
1240 num_regs
= xtensa
->regmap_contiguous
? xtensa
->total_regs_num
: xtensa
->dbregs_num
;
1243 LOG_DEBUG("reg_class=%i, num_regs=%d", (int)reg_class
, num_regs
);
1245 *reg_list
= calloc(num_regs
, sizeof(struct reg
*));
1249 *reg_list_size
= num_regs
;
1250 if (xtensa
->regmap_contiguous
) {
1251 assert((num_regs
<= xtensa
->total_regs_num
) && "contiguous regmap size internal error!");
1252 for (unsigned int i
= 0; i
< num_regs
; i
++)
1253 (*reg_list
)[i
] = xtensa
->contiguous_regs_list
[i
];
1257 for (unsigned int i
= 0; i
< num_regs
; i
++)
1258 (*reg_list
)[i
] = (struct reg
*)&xtensa
->empty_regs
[i
];
1260 for (unsigned int i
= 0; i
< xtensa
->core_cache
->num_regs
&& k
< num_regs
; i
++) {
1261 if (xtensa
->core_cache
->reg_list
[i
].exist
) {
1262 struct xtensa_reg_desc
*rlist
= (i
< XT_NUM_REGS
) ? xtensa_regs
: xtensa
->optregs
;
1263 unsigned int ridx
= (i
< XT_NUM_REGS
) ? i
: i
- XT_NUM_REGS
;
1264 int sparse_idx
= rlist
[ridx
].dbreg_num
;
1265 if (i
== XT_REG_IDX_PS
) {
1266 if (xtensa
->eps_dbglevel_idx
== 0) {
1267 LOG_ERROR("eps_dbglevel_idx not set\n");
1270 (*reg_list
)[sparse_idx
] = &xtensa
->core_cache
->reg_list
[xtensa
->eps_dbglevel_idx
];
1271 if (xtensa_extra_debug_log
)
1272 LOG_DEBUG("SPARSE GDB reg 0x%x getting EPS%d 0x%x",
1273 sparse_idx
, xtensa
->core_config
->debug
.irq_level
,
1274 xtensa_reg_get_value((*reg_list
)[sparse_idx
]));
1275 } else if (rlist
[ridx
].type
== XT_REG_RELGEN
) {
1276 (*reg_list
)[sparse_idx
- XT_REG_IDX_ARFIRST
] = &xtensa
->core_cache
->reg_list
[i
];
1278 (*reg_list
)[sparse_idx
] = &xtensa
->core_cache
->reg_list
[i
];
1280 if (i
== XT_REG_IDX_PC
)
1281 /* Make a duplicate copy of PC for external access */
1282 (*reg_list
)[XT_PC_DBREG_NUM_BASE
] = &xtensa
->core_cache
->reg_list
[i
];
1288 LOG_ERROR("SPARSE GDB reg list full (size %d)", k
);
1293 int xtensa_mmu_is_enabled(struct target
*target
, int *enabled
)
1295 struct xtensa
*xtensa
= target_to_xtensa(target
);
1296 *enabled
= xtensa
->core_config
->mmu
.itlb_entries_count
> 0 ||
1297 xtensa
->core_config
->mmu
.dtlb_entries_count
> 0;
1301 int xtensa_halt(struct target
*target
)
1303 struct xtensa
*xtensa
= target_to_xtensa(target
);
1305 LOG_TARGET_DEBUG(target
, "start");
1306 if (target
->state
== TARGET_HALTED
) {
1307 LOG_TARGET_DEBUG(target
, "target was already halted");
1310 /* First we have to read dsr and check if the target stopped */
1311 int res
= xtensa_dm_core_status_read(&xtensa
->dbg_mod
);
1312 if (res
!= ERROR_OK
) {
1313 LOG_TARGET_ERROR(target
, "Failed to read core status!");
1316 LOG_TARGET_DEBUG(target
, "Core status 0x%" PRIx32
, xtensa_dm_core_status_get(&xtensa
->dbg_mod
));
1317 if (!xtensa_is_stopped(target
)) {
1318 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DCRSET
, OCDDCR_ENABLEOCD
| OCDDCR_DEBUGINTERRUPT
);
1319 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
1320 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1321 if (res
!= ERROR_OK
)
1322 LOG_TARGET_ERROR(target
, "Failed to set OCDDCR_DEBUGINTERRUPT. Can't halt.");
1328 int xtensa_prepare_resume(struct target
*target
,
1330 target_addr_t address
,
1331 int handle_breakpoints
,
1332 int debug_execution
)
1334 struct xtensa
*xtensa
= target_to_xtensa(target
);
1337 LOG_TARGET_DEBUG(target
,
1338 "current=%d address=" TARGET_ADDR_FMT
", handle_breakpoints=%i, debug_execution=%i)",
1344 if (target
->state
!= TARGET_HALTED
) {
1345 LOG_TARGET_WARNING(target
, "target not halted");
1346 return ERROR_TARGET_NOT_HALTED
;
1349 if (address
&& !current
) {
1350 xtensa_reg_set(target
, XT_REG_IDX_PC
, address
);
1352 uint32_t cause
= xtensa_cause_get(target
);
1353 LOG_TARGET_DEBUG(target
, "DEBUGCAUSE 0x%x (watchpoint %lu) (break %lu)",
1354 cause
, (cause
& DEBUGCAUSE_DB
), (cause
& (DEBUGCAUSE_BI
| DEBUGCAUSE_BN
)));
1355 if (cause
& DEBUGCAUSE_DB
)
1356 /* We stopped due to a watchpoint. We can't just resume executing the
1357 * instruction again because */
1358 /* that would trigger the watchpoint again. To fix this, we single-step,
1359 * which ignores watchpoints. */
1360 xtensa_do_step(target
, current
, address
, handle_breakpoints
);
1361 if (cause
& (DEBUGCAUSE_BI
| DEBUGCAUSE_BN
))
1362 /* We stopped due to a break instruction. We can't just resume executing the
1363 * instruction again because */
1364 /* that would trigger the break again. To fix this, we single-step, which
1366 xtensa_do_step(target
, current
, address
, handle_breakpoints
);
1369 /* Write back hw breakpoints. Current FreeRTOS SMP code can set a hw breakpoint on an
1370 * exception; we need to clear that and return to the breakpoints gdb has set on resume. */
1371 for (unsigned int slot
= 0; slot
< xtensa
->core_config
->debug
.ibreaks_num
; slot
++) {
1372 if (xtensa
->hw_brps
[slot
]) {
1373 /* Write IBREAKA[slot] and set bit #slot in IBREAKENABLE */
1374 xtensa_reg_set(target
, XT_REG_IDX_IBREAKA0
+ slot
, xtensa
->hw_brps
[slot
]->address
);
1378 xtensa_reg_set(target
, XT_REG_IDX_IBREAKENABLE
, bpena
);
1380 /* Here we write all registers to the targets */
1381 int res
= xtensa_write_dirty_registers(target
);
1382 if (res
!= ERROR_OK
)
1383 LOG_TARGET_ERROR(target
, "Failed to write back register cache.");
1387 int xtensa_do_resume(struct target
*target
)
1389 struct xtensa
*xtensa
= target_to_xtensa(target
);
1391 LOG_TARGET_DEBUG(target
, "start");
1393 xtensa_queue_exec_ins(xtensa
, XT_INS_RFDO(xtensa
));
1394 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1395 if (res
!= ERROR_OK
) {
1396 LOG_TARGET_ERROR(target
, "Failed to exec RFDO %d!", res
);
1399 xtensa_core_status_check(target
);
1403 int xtensa_resume(struct target
*target
,
1405 target_addr_t address
,
1406 int handle_breakpoints
,
1407 int debug_execution
)
1409 LOG_TARGET_DEBUG(target
, "start");
1410 int res
= xtensa_prepare_resume(target
, current
, address
, handle_breakpoints
, debug_execution
);
1411 if (res
!= ERROR_OK
) {
1412 LOG_TARGET_ERROR(target
, "Failed to prepare for resume!");
1415 res
= xtensa_do_resume(target
);
1416 if (res
!= ERROR_OK
) {
1417 LOG_TARGET_ERROR(target
, "Failed to resume!");
1421 target
->debug_reason
= DBG_REASON_NOTHALTED
;
1422 if (!debug_execution
)
1423 target
->state
= TARGET_RUNNING
;
1425 target
->state
= TARGET_DEBUG_RUNNING
;
1427 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
1432 static bool xtensa_pc_in_winexc(struct target
*target
, target_addr_t pc
)
1434 struct xtensa
*xtensa
= target_to_xtensa(target
);
1435 uint8_t insn_buf
[XT_ISNS_SZ_MAX
];
1436 int err
= xtensa_read_buffer(target
, pc
, sizeof(insn_buf
), insn_buf
);
1437 if (err
!= ERROR_OK
)
1440 xtensa_insn_t insn
= buf_get_u32(insn_buf
, 0, 24);
1441 xtensa_insn_t masked
= insn
& XT_INS_L32E_S32E_MASK(xtensa
);
1442 if (masked
== XT_INS_L32E(xtensa
, 0, 0, 0) || masked
== XT_INS_S32E(xtensa
, 0, 0, 0))
1445 masked
= insn
& XT_INS_RFWO_RFWU_MASK(xtensa
);
1446 if (masked
== XT_INS_RFWO(xtensa
) || masked
== XT_INS_RFWU(xtensa
))
1452 int xtensa_do_step(struct target
*target
, int current
, target_addr_t address
, int handle_breakpoints
)
1454 struct xtensa
*xtensa
= target_to_xtensa(target
);
1456 const uint32_t icount_val
= -2; /* ICOUNT value to load for 1 step */
1457 xtensa_reg_val_t dbreakc
[XT_WATCHPOINTS_NUM_MAX
];
1458 xtensa_reg_val_t icountlvl
, cause
;
1459 xtensa_reg_val_t oldps
, oldpc
, cur_pc
;
1460 bool ps_lowered
= false;
1462 LOG_TARGET_DEBUG(target
, "current=%d, address=" TARGET_ADDR_FMT
", handle_breakpoints=%i",
1463 current
, address
, handle_breakpoints
);
1465 if (target
->state
!= TARGET_HALTED
) {
1466 LOG_TARGET_WARNING(target
, "target not halted");
1467 return ERROR_TARGET_NOT_HALTED
;
1470 if (xtensa
->eps_dbglevel_idx
== 0) {
1471 LOG_ERROR("eps_dbglevel_idx not set\n");
1475 /* Save old ps (EPS[dbglvl] on LX), pc */
1476 oldps
= xtensa_reg_get(target
, xtensa
->eps_dbglevel_idx
);
1477 oldpc
= xtensa_reg_get(target
, XT_REG_IDX_PC
);
1479 cause
= xtensa_cause_get(target
);
1480 LOG_TARGET_DEBUG(target
, "oldps=%" PRIx32
", oldpc=%" PRIx32
" dbg_cause=%" PRIx32
" exc_cause=%" PRIx32
,
1484 xtensa_reg_get(target
, XT_REG_IDX_EXCCAUSE
));
1485 if (handle_breakpoints
&& (cause
& (DEBUGCAUSE_BI
| DEBUGCAUSE_BN
))) {
1486 /* handle hard-coded SW breakpoints (e.g. syscalls) */
1487 LOG_TARGET_DEBUG(target
, "Increment PC to pass break instruction...");
1488 xtensa_cause_clear(target
); /* so we don't recurse into the same routine */
1489 /* pretend that we have stepped */
1490 if (cause
& DEBUGCAUSE_BI
)
1491 xtensa_reg_set(target
, XT_REG_IDX_PC
, oldpc
+ 3); /* PC = PC+3 */
1493 xtensa_reg_set(target
, XT_REG_IDX_PC
, oldpc
+ 2); /* PC = PC+2 */
1497 /* Xtensa LX has an ICOUNTLEVEL register which sets the maximum interrupt level
1498 * at which the instructions are to be counted while stepping.
1500 * For example, if we need to step by 2 instructions, and an interrupt occurs
1501 * in between, the processor will trigger the interrupt and halt after the 2nd
1502 * instruction within the interrupt vector and/or handler.
1504 * However, sometimes we don't want the interrupt handlers to be executed at all
1505 * while stepping through the code. In this case (XT_STEPPING_ISR_OFF),
1506 * ICOUNTLEVEL can be lowered to the executing code's (level + 1) to prevent ISR
1507 * code from being counted during stepping. Note that C exception handlers must
1508 * run at level 0 and hence will be counted and stepped into, should one occur.
1510 * TODO: Certain instructions should never be single-stepped and should instead
1511 * be emulated (per DUG): RSIL >= DBGLEVEL, RSR/WSR [ICOUNT|ICOUNTLEVEL], and
1514 if (xtensa
->stepping_isr_mode
== XT_STEPPING_ISR_OFF
) {
1515 if (!xtensa
->core_config
->high_irq
.enabled
) {
1518 "disabling IRQs while stepping is not implemented w/o high prio IRQs option!");
1521 /* Update ICOUNTLEVEL accordingly */
1522 icountlvl
= MIN((oldps
& 0xF) + 1, xtensa
->core_config
->debug
.irq_level
);
1524 icountlvl
= xtensa
->core_config
->debug
.irq_level
;
1527 if (cause
& DEBUGCAUSE_DB
) {
1528 /* We stopped due to a watchpoint. We can't just resume executing the instruction again because
1529 * that would trigger the watchpoint again. To fix this, we remove watchpoints,single-step and
1530 * re-enable the watchpoint. */
1533 "Single-stepping to get past instruction that triggered the watchpoint...");
1534 xtensa_cause_clear(target
); /* so we don't recurse into the same routine */
1535 /* Save all DBREAKCx registers and set to 0 to disable watchpoints */
1536 for (unsigned int slot
= 0; slot
< xtensa
->core_config
->debug
.dbreaks_num
; slot
++) {
1537 dbreakc
[slot
] = xtensa_reg_get(target
, XT_REG_IDX_DBREAKC0
+ slot
);
1538 xtensa_reg_set(target
, XT_REG_IDX_DBREAKC0
+ slot
, 0);
1542 if (!handle_breakpoints
&& (cause
& (DEBUGCAUSE_BI
| DEBUGCAUSE_BN
)))
1543 /* handle normal SW breakpoint */
1544 xtensa_cause_clear(target
); /* so we don't recurse into the same routine */
1545 if ((oldps
& 0xf) >= icountlvl
) {
1546 /* Lower interrupt level to allow stepping, but flag eps[dbglvl] to be restored */
1548 uint32_t newps
= (oldps
& ~0xf) | (icountlvl
- 1);
1549 xtensa_reg_set(target
, xtensa
->eps_dbglevel_idx
, newps
);
1550 LOG_TARGET_DEBUG(target
,
1551 "Lowering PS.INTLEVEL to allow stepping: %s <- 0x%08" PRIx32
" (was 0x%08" PRIx32
")",
1552 xtensa
->core_cache
->reg_list
[xtensa
->eps_dbglevel_idx
].name
,
1557 xtensa_reg_set(target
, XT_REG_IDX_ICOUNTLEVEL
, icountlvl
);
1558 xtensa_reg_set(target
, XT_REG_IDX_ICOUNT
, icount_val
);
1560 /* Now ICOUNT is set, we can resume as if we were going to run */
1561 res
= xtensa_prepare_resume(target
, current
, address
, 0, 0);
1562 if (res
!= ERROR_OK
) {
1563 LOG_TARGET_ERROR(target
, "Failed to prepare resume for single step");
1566 res
= xtensa_do_resume(target
);
1567 if (res
!= ERROR_OK
) {
1568 LOG_TARGET_ERROR(target
, "Failed to resume after setting up single step");
1572 /* Wait for stepping to complete */
1573 long long start
= timeval_ms();
1574 while (timeval_ms() < start
+ 500) {
1575 /* Do not use target_poll here, it also triggers other things... just manually read the DSR
1576 *until stepping is complete. */
1578 res
= xtensa_dm_core_status_read(&xtensa
->dbg_mod
);
1579 if (res
!= ERROR_OK
) {
1580 LOG_TARGET_ERROR(target
, "Failed to read core status!");
1583 if (xtensa_is_stopped(target
))
1587 LOG_TARGET_DEBUG(target
, "Finish stepping. dsr=0x%08" PRIx32
,
1588 xtensa_dm_core_status_get(&xtensa
->dbg_mod
));
1589 if (!xtensa_is_stopped(target
)) {
1592 "Timed out waiting for target to finish stepping. dsr=0x%08" PRIx32
,
1593 xtensa_dm_core_status_get(&xtensa
->dbg_mod
));
1594 target
->debug_reason
= DBG_REASON_NOTHALTED
;
1595 target
->state
= TARGET_RUNNING
;
1599 xtensa_fetch_all_regs(target
);
1600 cur_pc
= xtensa_reg_get(target
, XT_REG_IDX_PC
);
1602 LOG_TARGET_DEBUG(target
,
1603 "cur_ps=%" PRIx32
", cur_pc=%" PRIx32
" dbg_cause=%" PRIx32
" exc_cause=%" PRIx32
,
1604 xtensa_reg_get(target
, XT_REG_IDX_PS
),
1606 xtensa_cause_get(target
),
1607 xtensa_reg_get(target
, XT_REG_IDX_EXCCAUSE
));
1609 /* Do not step into WindowOverflow if ISRs are masked.
1610 If we stop in WindowOverflow at breakpoint with masked ISRs and
1611 try to do a step it will get us out of that handler */
1612 if (xtensa
->core_config
->windowed
&&
1613 xtensa
->stepping_isr_mode
== XT_STEPPING_ISR_OFF
&&
1614 xtensa_pc_in_winexc(target
, cur_pc
)) {
1615 /* isrmask = on, need to step out of the window exception handler */
1616 LOG_DEBUG("Stepping out of window exception, PC=%" PRIX32
, cur_pc
);
1618 address
= oldpc
+ 3;
1622 if (oldpc
== cur_pc
)
1623 LOG_TARGET_WARNING(target
, "Stepping doesn't seem to change PC! dsr=0x%08" PRIx32
,
1624 xtensa_dm_core_status_get(&xtensa
->dbg_mod
));
1626 LOG_DEBUG("Stepped from %" PRIX32
" to %" PRIX32
, oldpc
, cur_pc
);
1630 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
1631 target
->state
= TARGET_HALTED
;
1632 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
1633 LOG_DEBUG("Done stepping, PC=%" PRIX32
, cur_pc
);
1635 if (cause
& DEBUGCAUSE_DB
) {
1636 LOG_TARGET_DEBUG(target
, "...Done, re-installing watchpoints.");
1637 /* Restore the DBREAKCx registers */
1638 for (unsigned int slot
= 0; slot
< xtensa
->core_config
->debug
.dbreaks_num
; slot
++)
1639 xtensa_reg_set(target
, XT_REG_IDX_DBREAKC0
+ slot
, dbreakc
[slot
]);
1642 /* Restore int level */
1644 LOG_DEBUG("Restoring %s after stepping: 0x%08" PRIx32
,
1645 xtensa
->core_cache
->reg_list
[xtensa
->eps_dbglevel_idx
].name
,
1647 xtensa_reg_set(target
, xtensa
->eps_dbglevel_idx
, oldps
);
1650 /* write ICOUNTLEVEL back to zero */
1651 xtensa_reg_set(target
, XT_REG_IDX_ICOUNTLEVEL
, 0);
1652 /* TODO: can we skip writing dirty registers and re-fetching them? */
1653 res
= xtensa_write_dirty_registers(target
);
1654 xtensa_fetch_all_regs(target
);
1658 int xtensa_step(struct target
*target
, int current
, target_addr_t address
, int handle_breakpoints
)
1660 return xtensa_do_step(target
, current
, address
, handle_breakpoints
);
1664 * Returns true if two ranges are overlapping
1666 static inline bool xtensa_memory_regions_overlap(target_addr_t r1_start
,
1667 target_addr_t r1_end
,
1668 target_addr_t r2_start
,
1669 target_addr_t r2_end
)
1671 if ((r2_start
>= r1_start
) && (r2_start
< r1_end
))
1672 return true; /* r2_start is in r1 region */
1673 if ((r2_end
> r1_start
) && (r2_end
<= r1_end
))
1674 return true; /* r2_end is in r1 region */
1679 * Returns a size of overlapped region of two ranges.
1681 static inline target_addr_t
xtensa_get_overlap_size(target_addr_t r1_start
,
1682 target_addr_t r1_end
,
1683 target_addr_t r2_start
,
1684 target_addr_t r2_end
)
1686 if (xtensa_memory_regions_overlap(r1_start
, r1_end
, r2_start
, r2_end
)) {
1687 target_addr_t ov_start
= r1_start
< r2_start
? r2_start
: r1_start
;
1688 target_addr_t ov_end
= r1_end
> r2_end
? r2_end
: r1_end
;
1689 return ov_end
- ov_start
;
1695 * Check if the address gets to memory regions, and its access mode
1697 static bool xtensa_memory_op_validate_range(struct xtensa
*xtensa
, target_addr_t address
, size_t size
, int access
)
1699 target_addr_t adr_pos
= address
; /* address cursor set to the beginning start */
1700 target_addr_t adr_end
= address
+ size
; /* region end */
1701 target_addr_t overlap_size
;
1702 const struct xtensa_local_mem_region_config
*cm
; /* current mem region */
1704 while (adr_pos
< adr_end
) {
1705 cm
= xtensa_target_memory_region_find(xtensa
, adr_pos
);
1706 if (!cm
) /* address is not belong to anything */
1708 if ((cm
->access
& access
) != access
) /* access check */
1710 overlap_size
= xtensa_get_overlap_size(cm
->base
, (cm
->base
+ cm
->size
), adr_pos
, adr_end
);
1711 assert(overlap_size
!= 0);
1712 adr_pos
+= overlap_size
;
1717 int xtensa_read_memory(struct target
*target
, target_addr_t address
, uint32_t size
, uint32_t count
, uint8_t *buffer
)
1719 struct xtensa
*xtensa
= target_to_xtensa(target
);
1720 /* We are going to read memory in 32-bit increments. This may not be what the calling
1721 * function expects, so we may need to allocate a temp buffer and read into that first. */
1722 target_addr_t addrstart_al
= ALIGN_DOWN(address
, 4);
1723 target_addr_t addrend_al
= ALIGN_UP(address
+ size
* count
, 4);
1724 target_addr_t adr
= addrstart_al
;
1726 bool bswap
= xtensa
->target
->endianness
== TARGET_BIG_ENDIAN
;
1728 if (target
->state
!= TARGET_HALTED
) {
1729 LOG_TARGET_WARNING(target
, "target not halted");
1730 return ERROR_TARGET_NOT_HALTED
;
1733 if (!xtensa
->permissive_mode
) {
1734 if (!xtensa_memory_op_validate_range(xtensa
, address
, (size
* count
),
1735 XT_MEM_ACCESS_READ
)) {
1736 LOG_DEBUG("address " TARGET_ADDR_FMT
" not readable", address
);
1741 if (addrstart_al
== address
&& addrend_al
== address
+ (size
* count
)) {
1744 albuff
= malloc(addrend_al
- addrstart_al
);
1746 LOG_TARGET_ERROR(target
, "Out of memory allocating %" TARGET_PRIdADDR
" bytes!",
1747 addrend_al
- addrstart_al
);
1748 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1752 /* We're going to use A3 here */
1753 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A3
);
1754 /* Write start address to A3 */
1755 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, addrstart_al
);
1756 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1757 /* Now we can safely read data from addrstart_al up to addrend_al into albuff */
1758 if (xtensa
->probe_lsddr32p
!= 0) {
1759 xtensa_queue_exec_ins(xtensa
, XT_INS_LDDR32P(xtensa
, XT_REG_A3
));
1760 for (unsigned int i
= 0; adr
!= addrend_al
; i
+= sizeof(uint32_t), adr
+= sizeof(uint32_t))
1761 xtensa_queue_dbg_reg_read(xtensa
,
1762 (adr
+ sizeof(uint32_t) == addrend_al
) ? XDMREG_DDR
: XDMREG_DDREXEC
,
1765 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A4
);
1766 for (unsigned int i
= 0; adr
!= addrend_al
; i
+= sizeof(uint32_t), adr
+= sizeof(uint32_t)) {
1767 xtensa_queue_exec_ins(xtensa
, XT_INS_L32I(xtensa
, XT_REG_A3
, XT_REG_A4
, 0));
1768 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A4
));
1769 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, &albuff
[i
]);
1770 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, adr
+ sizeof(uint32_t));
1771 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1774 int res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1775 if (res
== ERROR_OK
) {
1776 bool prev_suppress
= xtensa
->suppress_dsr_errors
;
1777 xtensa
->suppress_dsr_errors
= true;
1778 res
= xtensa_core_status_check(target
);
1779 if (xtensa
->probe_lsddr32p
== -1)
1780 xtensa
->probe_lsddr32p
= 1;
1781 xtensa
->suppress_dsr_errors
= prev_suppress
;
1783 if (res
!= ERROR_OK
) {
1784 if (xtensa
->probe_lsddr32p
!= 0) {
1785 /* Disable fast memory access instructions and retry before reporting an error */
1786 LOG_TARGET_INFO(target
, "Disabling LDDR32.P/SDDR32.P");
1787 xtensa
->probe_lsddr32p
= 0;
1788 res
= xtensa_read_memory(target
, address
, size
, count
, buffer
);
1791 LOG_TARGET_WARNING(target
, "Failed reading %d bytes at address "TARGET_ADDR_FMT
,
1792 count
* size
, address
);
1797 buf_bswap32(albuff
, albuff
, addrend_al
- addrstart_al
);
1798 if (albuff
!= buffer
) {
1799 memcpy(buffer
, albuff
+ (address
& 3), (size
* count
));
1806 int xtensa_read_buffer(struct target
*target
, target_addr_t address
, uint32_t count
, uint8_t *buffer
)
1808 /* xtensa_read_memory can also read unaligned stuff. Just pass through to that routine. */
1809 return xtensa_read_memory(target
, address
, 1, count
, buffer
);
1812 int xtensa_write_memory(struct target
*target
,
1813 target_addr_t address
,
1816 const uint8_t *buffer
)
1818 /* This memory write function can get thrown nigh everything into it, from
1819 * aligned uint32 writes to unaligned uint8ths. The Xtensa memory doesn't always
1820 * accept anything but aligned uint32 writes, though. That is why we convert
1821 * everything into that. */
1822 struct xtensa
*xtensa
= target_to_xtensa(target
);
1823 target_addr_t addrstart_al
= ALIGN_DOWN(address
, 4);
1824 target_addr_t addrend_al
= ALIGN_UP(address
+ size
* count
, 4);
1825 target_addr_t adr
= addrstart_al
;
1828 bool fill_head_tail
= false;
1830 if (target
->state
!= TARGET_HALTED
) {
1831 LOG_TARGET_WARNING(target
, "target not halted");
1832 return ERROR_TARGET_NOT_HALTED
;
1835 if (!xtensa
->permissive_mode
) {
1836 if (!xtensa_memory_op_validate_range(xtensa
, address
, (size
* count
), XT_MEM_ACCESS_WRITE
)) {
1837 LOG_WARNING("address " TARGET_ADDR_FMT
" not writable", address
);
1842 if (size
== 0 || count
== 0 || !buffer
)
1843 return ERROR_COMMAND_SYNTAX_ERROR
;
1845 /* Allocate a temporary buffer to put the aligned bytes in, if needed. */
1846 if (addrstart_al
== address
&& addrend_al
== address
+ (size
* count
)) {
1847 if (xtensa
->target
->endianness
== TARGET_BIG_ENDIAN
)
1848 /* Need a buffer for byte-swapping */
1849 albuff
= malloc(addrend_al
- addrstart_al
);
1851 /* We discard the const here because albuff can also be non-const */
1852 albuff
= (uint8_t *)buffer
;
1854 fill_head_tail
= true;
1855 albuff
= malloc(addrend_al
- addrstart_al
);
1858 LOG_TARGET_ERROR(target
, "Out of memory allocating %" TARGET_PRIdADDR
" bytes!",
1859 addrend_al
- addrstart_al
);
1860 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1863 /* We're going to use A3 here */
1864 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A3
);
1866 /* If we're using a temp aligned buffer, we need to fill the head and/or tail bit of it. */
1867 if (fill_head_tail
) {
1868 /* See if we need to read the first and/or last word. */
1870 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, addrstart_al
);
1871 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1872 if (xtensa
->probe_lsddr32p
== 1) {
1873 xtensa_queue_exec_ins(xtensa
, XT_INS_LDDR32P(xtensa
, XT_REG_A3
));
1875 xtensa_queue_exec_ins(xtensa
, XT_INS_L32I(xtensa
, XT_REG_A3
, XT_REG_A3
, 0));
1876 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1878 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
, &albuff
[0]);
1880 if ((address
+ (size
* count
)) & 3) {
1881 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, addrend_al
- 4);
1882 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1883 if (xtensa
->probe_lsddr32p
== 1) {
1884 xtensa_queue_exec_ins(xtensa
, XT_INS_LDDR32P(xtensa
, XT_REG_A3
));
1886 xtensa_queue_exec_ins(xtensa
, XT_INS_L32I(xtensa
, XT_REG_A3
, XT_REG_A3
, 0));
1887 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1889 xtensa_queue_dbg_reg_read(xtensa
, XDMREG_DDR
,
1890 &albuff
[addrend_al
- addrstart_al
- 4]);
1893 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1894 if (res
!= ERROR_OK
) {
1895 LOG_ERROR("Error issuing unaligned memory write context instruction(s): %d", res
);
1896 if (albuff
!= buffer
)
1900 xtensa_core_status_check(target
);
1901 if (xtensa
->target
->endianness
== TARGET_BIG_ENDIAN
) {
1902 bool swapped_w0
= false;
1904 buf_bswap32(&albuff
[0], &albuff
[0], 4);
1907 if ((address
+ (size
* count
)) & 3) {
1908 if ((addrend_al
- addrstart_al
- 4 == 0) && swapped_w0
) {
1909 /* Don't double-swap if buffer start/end are within the same word */
1911 buf_bswap32(&albuff
[addrend_al
- addrstart_al
- 4],
1912 &albuff
[addrend_al
- addrstart_al
- 4], 4);
1916 /* Copy data to be written into the aligned buffer (in host-endianness) */
1917 memcpy(&albuff
[address
& 3], buffer
, size
* count
);
1918 /* Now we can write albuff in aligned uint32s. */
1921 if (xtensa
->target
->endianness
== TARGET_BIG_ENDIAN
)
1922 buf_bswap32(albuff
, fill_head_tail
? albuff
: buffer
, addrend_al
- addrstart_al
);
1924 /* Write start address to A3 */
1925 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, addrstart_al
);
1926 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1927 /* Write the aligned buffer */
1928 if (xtensa
->probe_lsddr32p
!= 0) {
1929 for (unsigned int i
= 0; adr
!= addrend_al
; i
+= sizeof(uint32_t), adr
+= sizeof(uint32_t)) {
1931 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, buf_get_u32(&albuff
[i
], 0, 32));
1932 xtensa_queue_exec_ins(xtensa
, XT_INS_SDDR32P(xtensa
, XT_REG_A3
));
1934 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDREXEC
, buf_get_u32(&albuff
[i
], 0, 32));
1938 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A4
);
1939 for (unsigned int i
= 0; adr
!= addrend_al
; i
+= sizeof(uint32_t), adr
+= sizeof(uint32_t)) {
1940 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, buf_get_u32(&albuff
[i
], 0, 32));
1941 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A4
));
1942 xtensa_queue_exec_ins(xtensa
, XT_INS_S32I(xtensa
, XT_REG_A3
, XT_REG_A4
, 0));
1943 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, adr
+ sizeof(uint32_t));
1944 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1948 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1949 if (res
== ERROR_OK
) {
1950 bool prev_suppress
= xtensa
->suppress_dsr_errors
;
1951 xtensa
->suppress_dsr_errors
= true;
1952 res
= xtensa_core_status_check(target
);
1953 if (xtensa
->probe_lsddr32p
== -1)
1954 xtensa
->probe_lsddr32p
= 1;
1955 xtensa
->suppress_dsr_errors
= prev_suppress
;
1957 if (res
!= ERROR_OK
) {
1958 if (xtensa
->probe_lsddr32p
!= 0) {
1959 /* Disable fast memory access instructions and retry before reporting an error */
1960 LOG_TARGET_INFO(target
, "Disabling LDDR32.P/SDDR32.P");
1961 xtensa
->probe_lsddr32p
= 0;
1962 res
= xtensa_write_memory(target
, address
, size
, count
, buffer
);
1964 LOG_TARGET_WARNING(target
, "Failed writing %d bytes at address "TARGET_ADDR_FMT
,
1965 count
* size
, address
);
1968 /* Invalidate ICACHE, writeback DCACHE if present */
1969 uint32_t issue_ihi
= xtensa_is_icacheable(xtensa
, address
);
1970 uint32_t issue_dhwb
= xtensa_is_dcacheable(xtensa
, address
);
1971 if (issue_ihi
|| issue_dhwb
) {
1972 uint32_t ilinesize
= issue_ihi
? xtensa
->core_config
->icache
.line_size
: UINT32_MAX
;
1973 uint32_t dlinesize
= issue_dhwb
? xtensa
->core_config
->dcache
.line_size
: UINT32_MAX
;
1974 uint32_t linesize
= MIN(ilinesize
, dlinesize
);
1978 while ((adr
+ off
) < addrend_al
) {
1980 /* Write start address to A3 */
1981 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, adr
);
1982 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
1985 xtensa_queue_exec_ins(xtensa
, XT_INS_IHI(xtensa
, XT_REG_A3
, off
));
1987 xtensa_queue_exec_ins(xtensa
, XT_INS_DHWBI(xtensa
, XT_REG_A3
, off
));
1990 /* IHI, DHWB have 8-bit immediate operands (0..1020) */
1996 /* Execute cache WB/INV instructions */
1997 res
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
1998 xtensa_core_status_check(target
);
1999 if (res
!= ERROR_OK
)
2000 LOG_TARGET_ERROR(target
,
2001 "Error issuing cache writeback/invaldate instruction(s): %d",
2005 if (albuff
!= buffer
)
2011 int xtensa_write_buffer(struct target
*target
, target_addr_t address
, uint32_t count
, const uint8_t *buffer
)
2013 /* xtensa_write_memory can handle everything. Just pass on to that. */
2014 return xtensa_write_memory(target
, address
, 1, count
, buffer
);
2017 int xtensa_checksum_memory(struct target
*target
, target_addr_t address
, uint32_t count
, uint32_t *checksum
)
2019 LOG_WARNING("not implemented yet");
2023 int xtensa_poll(struct target
*target
)
2025 struct xtensa
*xtensa
= target_to_xtensa(target
);
2026 if (xtensa_dm_poll(&xtensa
->dbg_mod
) != ERROR_OK
) {
2027 target
->state
= TARGET_UNKNOWN
;
2028 return ERROR_TARGET_NOT_EXAMINED
;
2031 int res
= xtensa_dm_power_status_read(&xtensa
->dbg_mod
, PWRSTAT_DEBUGWASRESET(xtensa
) |
2032 PWRSTAT_COREWASRESET(xtensa
));
2033 if (xtensa
->dbg_mod
.power_status
.stat
!= xtensa
->dbg_mod
.power_status
.stath
)
2034 LOG_TARGET_DEBUG(target
, "PWRSTAT: read 0x%08" PRIx32
", clear 0x%08lx, reread 0x%08" PRIx32
,
2035 xtensa
->dbg_mod
.power_status
.stat
,
2036 PWRSTAT_DEBUGWASRESET(xtensa
) | PWRSTAT_COREWASRESET(xtensa
),
2037 xtensa
->dbg_mod
.power_status
.stath
);
2038 if (res
!= ERROR_OK
)
2041 if (xtensa_dm_tap_was_reset(&xtensa
->dbg_mod
)) {
2042 LOG_TARGET_INFO(target
, "Debug controller was reset.");
2043 res
= xtensa_smpbreak_write(xtensa
, xtensa
->smp_break
);
2044 if (res
!= ERROR_OK
)
2047 if (xtensa_dm_core_was_reset(&xtensa
->dbg_mod
))
2048 LOG_TARGET_INFO(target
, "Core was reset.");
2049 xtensa_dm_power_status_cache(&xtensa
->dbg_mod
);
2050 /* Enable JTAG, set reset if needed */
2051 res
= xtensa_wakeup(target
);
2052 if (res
!= ERROR_OK
)
2055 uint32_t prev_dsr
= xtensa
->dbg_mod
.core_status
.dsr
;
2056 res
= xtensa_dm_core_status_read(&xtensa
->dbg_mod
);
2057 if (res
!= ERROR_OK
)
2059 if (prev_dsr
!= xtensa
->dbg_mod
.core_status
.dsr
)
2060 LOG_TARGET_DEBUG(target
,
2061 "DSR has changed: was 0x%08" PRIx32
" now 0x%08" PRIx32
,
2063 xtensa
->dbg_mod
.core_status
.dsr
);
2064 if (xtensa
->dbg_mod
.power_status
.stath
& PWRSTAT_COREWASRESET(xtensa
)) {
2065 /* if RESET state is persitent */
2066 target
->state
= TARGET_RESET
;
2067 } else if (!xtensa_dm_is_powered(&xtensa
->dbg_mod
)) {
2068 LOG_TARGET_DEBUG(target
, "not powered 0x%" PRIX32
"%ld",
2069 xtensa
->dbg_mod
.core_status
.dsr
,
2070 xtensa
->dbg_mod
.core_status
.dsr
& OCDDSR_STOPPED
);
2071 target
->state
= TARGET_UNKNOWN
;
2072 if (xtensa
->come_online_probes_num
== 0)
2073 target
->examined
= false;
2075 xtensa
->come_online_probes_num
--;
2076 } else if (xtensa_is_stopped(target
)) {
2077 if (target
->state
!= TARGET_HALTED
) {
2078 enum target_state oldstate
= target
->state
;
2079 target
->state
= TARGET_HALTED
;
2080 /* Examine why the target has been halted */
2081 target
->debug_reason
= DBG_REASON_DBGRQ
;
2082 xtensa_fetch_all_regs(target
);
2083 /* When setting debug reason DEBUGCAUSE events have the following
2084 * priorities: watchpoint == breakpoint > single step > debug interrupt. */
2085 /* Watchpoint and breakpoint events at the same time results in special
2086 * debug reason: DBG_REASON_WPTANDBKPT. */
2087 uint32_t halt_cause
= xtensa_cause_get(target
);
2088 /* TODO: Add handling of DBG_REASON_EXC_CATCH */
2089 if (halt_cause
& DEBUGCAUSE_IC
)
2090 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
2091 if (halt_cause
& (DEBUGCAUSE_IB
| DEBUGCAUSE_BN
| DEBUGCAUSE_BI
)) {
2092 if (halt_cause
& DEBUGCAUSE_DB
)
2093 target
->debug_reason
= DBG_REASON_WPTANDBKPT
;
2095 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
2096 } else if (halt_cause
& DEBUGCAUSE_DB
) {
2097 target
->debug_reason
= DBG_REASON_WATCHPOINT
;
2099 LOG_TARGET_DEBUG(target
, "Target halted, pc=0x%08" PRIx32
2100 ", debug_reason=%08" PRIx32
", oldstate=%08" PRIx32
,
2101 xtensa_reg_get(target
, XT_REG_IDX_PC
),
2102 target
->debug_reason
,
2104 LOG_TARGET_DEBUG(target
, "Halt reason=0x%08" PRIX32
", exc_cause=%" PRId32
", dsr=0x%08" PRIx32
,
2106 xtensa_reg_get(target
, XT_REG_IDX_EXCCAUSE
),
2107 xtensa
->dbg_mod
.core_status
.dsr
);
2108 xtensa_dm_core_status_clear(
2110 OCDDSR_DEBUGPENDBREAK
| OCDDSR_DEBUGINTBREAK
| OCDDSR_DEBUGPENDTRAX
|
2111 OCDDSR_DEBUGINTTRAX
|
2112 OCDDSR_DEBUGPENDHOST
| OCDDSR_DEBUGINTHOST
);
2115 target
->debug_reason
= DBG_REASON_NOTHALTED
;
2116 if (target
->state
!= TARGET_RUNNING
&& target
->state
!= TARGET_DEBUG_RUNNING
) {
2117 target
->state
= TARGET_RUNNING
;
2118 target
->debug_reason
= DBG_REASON_NOTHALTED
;
2121 if (xtensa
->trace_active
) {
2122 /* Detect if tracing was active but has stopped. */
2123 struct xtensa_trace_status trace_status
;
2124 res
= xtensa_dm_trace_status_read(&xtensa
->dbg_mod
, &trace_status
);
2125 if (res
== ERROR_OK
) {
2126 if (!(trace_status
.stat
& TRAXSTAT_TRACT
)) {
2127 LOG_INFO("Detected end of trace.");
2128 if (trace_status
.stat
& TRAXSTAT_PCMTG
)
2129 LOG_TARGET_INFO(target
, "Trace stop triggered by PC match");
2130 if (trace_status
.stat
& TRAXSTAT_PTITG
)
2131 LOG_TARGET_INFO(target
, "Trace stop triggered by Processor Trigger Input");
2132 if (trace_status
.stat
& TRAXSTAT_CTITG
)
2133 LOG_TARGET_INFO(target
, "Trace stop triggered by Cross-trigger Input");
2134 xtensa
->trace_active
= false;
2141 static int xtensa_update_instruction(struct target
*target
, target_addr_t address
, uint32_t size
, const uint8_t *buffer
)
2143 struct xtensa
*xtensa
= target_to_xtensa(target
);
2144 unsigned int issue_ihi
= xtensa_is_icacheable(xtensa
, address
);
2145 unsigned int issue_dhwbi
= xtensa_is_dcacheable(xtensa
, address
);
2146 uint32_t icache_line_size
= issue_ihi
? xtensa
->core_config
->icache
.line_size
: UINT32_MAX
;
2147 uint32_t dcache_line_size
= issue_dhwbi
? xtensa
->core_config
->dcache
.line_size
: UINT32_MAX
;
2148 unsigned int same_ic_line
= ((address
& (icache_line_size
- 1)) + size
) <= icache_line_size
;
2149 unsigned int same_dc_line
= ((address
& (dcache_line_size
- 1)) + size
) <= dcache_line_size
;
2152 if (size
> icache_line_size
)
2155 if (issue_ihi
|| issue_dhwbi
) {
2156 /* We're going to use A3 here */
2157 xtensa_mark_register_dirty(xtensa
, XT_REG_IDX_A3
);
2159 /* Write start address to A3 and invalidate */
2160 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, address
);
2161 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
2162 LOG_TARGET_DEBUG(target
, "DHWBI, IHI for address "TARGET_ADDR_FMT
, address
);
2164 xtensa_queue_exec_ins(xtensa
, XT_INS_DHWBI(xtensa
, XT_REG_A3
, 0));
2165 if (!same_dc_line
) {
2166 LOG_TARGET_DEBUG(target
,
2167 "DHWBI second dcache line for address "TARGET_ADDR_FMT
,
2169 xtensa_queue_exec_ins(xtensa
, XT_INS_DHWBI(xtensa
, XT_REG_A3
, 4));
2173 xtensa_queue_exec_ins(xtensa
, XT_INS_IHI(xtensa
, XT_REG_A3
, 0));
2174 if (!same_ic_line
) {
2175 LOG_TARGET_DEBUG(target
,
2176 "IHI second icache line for address "TARGET_ADDR_FMT
,
2178 xtensa_queue_exec_ins(xtensa
, XT_INS_IHI(xtensa
, XT_REG_A3
, 4));
2182 /* Execute invalidate instructions */
2183 ret
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
2184 xtensa_core_status_check(target
);
2185 if (ret
!= ERROR_OK
) {
2186 LOG_ERROR("Error issuing cache invaldate instruction(s): %d", ret
);
2191 /* Write new instructions to memory */
2192 ret
= target_write_buffer(target
, address
, size
, buffer
);
2193 if (ret
!= ERROR_OK
) {
2194 LOG_TARGET_ERROR(target
, "Error writing instruction to memory: %d", ret
);
2199 /* Flush dcache so instruction propagates. A3 may be corrupted during memory write */
2200 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, address
);
2201 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
2202 xtensa_queue_exec_ins(xtensa
, XT_INS_DHWB(xtensa
, XT_REG_A3
, 0));
2203 LOG_DEBUG("DHWB dcache line for address "TARGET_ADDR_FMT
, address
);
2204 if (!same_dc_line
) {
2205 LOG_TARGET_DEBUG(target
, "DHWB second dcache line for address "TARGET_ADDR_FMT
, address
+ 4);
2206 xtensa_queue_exec_ins(xtensa
, XT_INS_DHWB(xtensa
, XT_REG_A3
, 4));
2209 /* Execute invalidate instructions */
2210 ret
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
2211 xtensa_core_status_check(target
);
2214 /* TODO: Handle L2 cache if present */
2218 static int xtensa_sw_breakpoint_add(struct target
*target
,
2219 struct breakpoint
*breakpoint
,
2220 struct xtensa_sw_breakpoint
*sw_bp
)
2222 struct xtensa
*xtensa
= target_to_xtensa(target
);
2223 int ret
= target_read_buffer(target
, breakpoint
->address
, XT_ISNS_SZ_MAX
, sw_bp
->insn
);
2224 if (ret
!= ERROR_OK
) {
2225 LOG_TARGET_ERROR(target
, "Failed to read original instruction (%d)!", ret
);
2229 sw_bp
->insn_sz
= MIN(XT_ISNS_SZ_MAX
, breakpoint
->length
);
2230 sw_bp
->oocd_bp
= breakpoint
;
2232 uint32_t break_insn
= sw_bp
->insn_sz
== XT_ISNS_SZ_MAX
? XT_INS_BREAK(xtensa
, 0, 0) : XT_INS_BREAKN(xtensa
, 0);
2234 /* Underlying memory write will convert instruction endianness, don't do that here */
2235 ret
= xtensa_update_instruction(target
, breakpoint
->address
, sw_bp
->insn_sz
, (uint8_t *)&break_insn
);
2236 if (ret
!= ERROR_OK
) {
2237 LOG_TARGET_ERROR(target
, "Failed to write breakpoint instruction (%d)!", ret
);
2244 static int xtensa_sw_breakpoint_remove(struct target
*target
, struct xtensa_sw_breakpoint
*sw_bp
)
2246 int ret
= xtensa_update_instruction(target
, sw_bp
->oocd_bp
->address
, sw_bp
->insn_sz
, sw_bp
->insn
);
2247 if (ret
!= ERROR_OK
) {
2248 LOG_TARGET_ERROR(target
, "Failed to write insn (%d)!", ret
);
2251 sw_bp
->oocd_bp
= NULL
;
2255 int xtensa_breakpoint_add(struct target
*target
, struct breakpoint
*breakpoint
)
2257 struct xtensa
*xtensa
= target_to_xtensa(target
);
2260 if (breakpoint
->type
== BKPT_SOFT
) {
2261 for (slot
= 0; slot
< XT_SW_BREAKPOINTS_MAX_NUM
; slot
++) {
2262 if (!xtensa
->sw_brps
[slot
].oocd_bp
||
2263 xtensa
->sw_brps
[slot
].oocd_bp
== breakpoint
)
2266 if (slot
== XT_SW_BREAKPOINTS_MAX_NUM
) {
2267 LOG_TARGET_WARNING(target
, "No free slots to add SW breakpoint!");
2268 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2270 int ret
= xtensa_sw_breakpoint_add(target
, breakpoint
, &xtensa
->sw_brps
[slot
]);
2271 if (ret
!= ERROR_OK
) {
2272 LOG_TARGET_ERROR(target
, "Failed to add SW breakpoint!");
2275 LOG_TARGET_DEBUG(target
, "placed SW breakpoint %u @ " TARGET_ADDR_FMT
,
2277 breakpoint
->address
);
2281 for (slot
= 0; slot
< xtensa
->core_config
->debug
.ibreaks_num
; slot
++) {
2282 if (!xtensa
->hw_brps
[slot
] || xtensa
->hw_brps
[slot
] == breakpoint
)
2285 if (slot
== xtensa
->core_config
->debug
.ibreaks_num
) {
2286 LOG_TARGET_ERROR(target
, "No free slots to add HW breakpoint!");
2287 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2290 xtensa
->hw_brps
[slot
] = breakpoint
;
2291 /* We will actually write the breakpoints when we resume the target. */
2292 LOG_TARGET_DEBUG(target
, "placed HW breakpoint %u @ " TARGET_ADDR_FMT
,
2294 breakpoint
->address
);
2299 int xtensa_breakpoint_remove(struct target
*target
, struct breakpoint
*breakpoint
)
2301 struct xtensa
*xtensa
= target_to_xtensa(target
);
2304 if (breakpoint
->type
== BKPT_SOFT
) {
2305 for (slot
= 0; slot
< XT_SW_BREAKPOINTS_MAX_NUM
; slot
++) {
2306 if (xtensa
->sw_brps
[slot
].oocd_bp
&& xtensa
->sw_brps
[slot
].oocd_bp
== breakpoint
)
2309 if (slot
== XT_SW_BREAKPOINTS_MAX_NUM
) {
2310 LOG_TARGET_WARNING(target
, "Max SW breakpoints slot reached, slot=%u!", slot
);
2311 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2313 int ret
= xtensa_sw_breakpoint_remove(target
, &xtensa
->sw_brps
[slot
]);
2314 if (ret
!= ERROR_OK
) {
2315 LOG_TARGET_ERROR(target
, "Failed to remove SW breakpoint (%d)!", ret
);
2318 LOG_TARGET_DEBUG(target
, "cleared SW breakpoint %u @ " TARGET_ADDR_FMT
, slot
, breakpoint
->address
);
2322 for (slot
= 0; slot
< xtensa
->core_config
->debug
.ibreaks_num
; slot
++) {
2323 if (xtensa
->hw_brps
[slot
] == breakpoint
)
2326 if (slot
== xtensa
->core_config
->debug
.ibreaks_num
) {
2327 LOG_TARGET_ERROR(target
, "HW breakpoint not found!");
2328 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2330 xtensa
->hw_brps
[slot
] = NULL
;
2331 LOG_TARGET_DEBUG(target
, "cleared HW breakpoint %u @ " TARGET_ADDR_FMT
, slot
, breakpoint
->address
);
2335 int xtensa_watchpoint_add(struct target
*target
, struct watchpoint
*watchpoint
)
2337 struct xtensa
*xtensa
= target_to_xtensa(target
);
2339 xtensa_reg_val_t dbreakcval
;
2341 if (target
->state
!= TARGET_HALTED
) {
2342 LOG_TARGET_WARNING(target
, "target not halted");
2343 return ERROR_TARGET_NOT_HALTED
;
2346 if (watchpoint
->mask
!= ~(uint32_t)0) {
2347 LOG_TARGET_ERROR(target
, "watchpoint value masks not supported");
2348 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2351 for (slot
= 0; slot
< xtensa
->core_config
->debug
.dbreaks_num
; slot
++) {
2352 if (!xtensa
->hw_wps
[slot
] || xtensa
->hw_wps
[slot
] == watchpoint
)
2355 if (slot
== xtensa
->core_config
->debug
.dbreaks_num
) {
2356 LOG_TARGET_WARNING(target
, "No free slots to add HW watchpoint!");
2357 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2360 /* Figure out value for dbreakc5..0
2361 * It's basically 0x3F with an incremental bit removed from the LSB for each extra length power of 2. */
2362 if (watchpoint
->length
< 1 || watchpoint
->length
> 64 ||
2363 !IS_PWR_OF_2(watchpoint
->length
) ||
2364 !IS_ALIGNED(watchpoint
->address
, watchpoint
->length
)) {
2367 "Watchpoint with length %d on address " TARGET_ADDR_FMT
2368 " not supported by hardware.",
2370 watchpoint
->address
);
2371 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2373 dbreakcval
= ALIGN_DOWN(0x3F, watchpoint
->length
);
2375 if (watchpoint
->rw
== WPT_READ
)
2376 dbreakcval
|= BIT(30);
2377 if (watchpoint
->rw
== WPT_WRITE
)
2378 dbreakcval
|= BIT(31);
2379 if (watchpoint
->rw
== WPT_ACCESS
)
2380 dbreakcval
|= BIT(30) | BIT(31);
2382 /* Write DBREAKA[slot] and DBCREAKC[slot] */
2383 xtensa_reg_set(target
, XT_REG_IDX_DBREAKA0
+ slot
, watchpoint
->address
);
2384 xtensa_reg_set(target
, XT_REG_IDX_DBREAKC0
+ slot
, dbreakcval
);
2385 xtensa
->hw_wps
[slot
] = watchpoint
;
2386 LOG_TARGET_DEBUG(target
, "placed HW watchpoint @ " TARGET_ADDR_FMT
,
2387 watchpoint
->address
);
2391 int xtensa_watchpoint_remove(struct target
*target
, struct watchpoint
*watchpoint
)
2393 struct xtensa
*xtensa
= target_to_xtensa(target
);
2396 for (slot
= 0; slot
< xtensa
->core_config
->debug
.dbreaks_num
; slot
++) {
2397 if (xtensa
->hw_wps
[slot
] == watchpoint
)
2400 if (slot
== xtensa
->core_config
->debug
.dbreaks_num
) {
2401 LOG_TARGET_WARNING(target
, "HW watchpoint " TARGET_ADDR_FMT
" not found!", watchpoint
->address
);
2402 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
2404 xtensa_reg_set(target
, XT_REG_IDX_DBREAKC0
+ slot
, 0);
2405 xtensa
->hw_wps
[slot
] = NULL
;
2406 LOG_TARGET_DEBUG(target
, "cleared HW watchpoint @ " TARGET_ADDR_FMT
,
2407 watchpoint
->address
);
2411 static int xtensa_build_reg_cache(struct target
*target
)
2413 struct xtensa
*xtensa
= target_to_xtensa(target
);
2414 struct reg_cache
**cache_p
= register_get_last_cache_p(&target
->reg_cache
);
2415 unsigned int last_dbreg_num
= 0;
2417 if (xtensa
->core_regs_num
+ xtensa
->num_optregs
!= xtensa
->total_regs_num
)
2418 LOG_TARGET_WARNING(target
, "Register count MISMATCH: %d core regs, %d extended regs; %d expected",
2419 xtensa
->core_regs_num
, xtensa
->num_optregs
, xtensa
->total_regs_num
);
2421 struct reg_cache
*reg_cache
= calloc(1, sizeof(struct reg_cache
));
2424 LOG_ERROR("Failed to alloc reg cache!");
2427 reg_cache
->name
= "Xtensa registers";
2428 reg_cache
->next
= NULL
;
2430 unsigned int reg_list_size
= XT_NUM_REGS
+ xtensa
->num_optregs
;
2431 struct reg
*reg_list
= calloc(reg_list_size
, sizeof(struct reg
));
2433 LOG_ERROR("Failed to alloc reg list!");
2436 xtensa
->dbregs_num
= 0;
2437 unsigned int didx
= 0;
2438 for (unsigned int whichlist
= 0; whichlist
< 2; whichlist
++) {
2439 struct xtensa_reg_desc
*rlist
= (whichlist
== 0) ? xtensa_regs
: xtensa
->optregs
;
2440 unsigned int listsize
= (whichlist
== 0) ? XT_NUM_REGS
: xtensa
->num_optregs
;
2441 for (unsigned int i
= 0; i
< listsize
; i
++, didx
++) {
2442 reg_list
[didx
].exist
= rlist
[i
].exist
;
2443 reg_list
[didx
].name
= rlist
[i
].name
;
2444 reg_list
[didx
].size
= 32;
2445 reg_list
[didx
].value
= calloc(1, 4 /*XT_REG_LEN*/); /* make Clang Static Analyzer happy */
2446 if (!reg_list
[didx
].value
) {
2447 LOG_ERROR("Failed to alloc reg list value!");
2450 reg_list
[didx
].dirty
= false;
2451 reg_list
[didx
].valid
= false;
2452 reg_list
[didx
].type
= &xtensa_reg_type
;
2453 reg_list
[didx
].arch_info
= xtensa
;
2454 if (rlist
[i
].exist
&& (rlist
[i
].dbreg_num
> last_dbreg_num
))
2455 last_dbreg_num
= rlist
[i
].dbreg_num
;
2457 if (xtensa_extra_debug_log
) {
2458 LOG_TARGET_DEBUG(target
,
2459 "POPULATE %-16s list %d exist %d, idx %d, type %d, dbreg_num 0x%04x",
2460 reg_list
[didx
].name
,
2462 reg_list
[didx
].exist
,
2465 rlist
[i
].dbreg_num
);
2470 xtensa
->dbregs_num
= last_dbreg_num
+ 1;
2471 reg_cache
->reg_list
= reg_list
;
2472 reg_cache
->num_regs
= reg_list_size
;
2474 LOG_TARGET_DEBUG(target
, "xtensa->total_regs_num %d reg_list_size %d xtensa->dbregs_num %d",
2475 xtensa
->total_regs_num
, reg_list_size
, xtensa
->dbregs_num
);
2477 /* Construct empty-register list for handling unknown register requests */
2478 xtensa
->empty_regs
= calloc(xtensa
->dbregs_num
, sizeof(struct reg
));
2479 if (!xtensa
->empty_regs
) {
2480 LOG_TARGET_ERROR(target
, "ERROR: Out of memory");
2483 for (unsigned int i
= 0; i
< xtensa
->dbregs_num
; i
++) {
2484 xtensa
->empty_regs
[i
].name
= calloc(8, sizeof(char));
2485 if (!xtensa
->empty_regs
[i
].name
) {
2486 LOG_TARGET_ERROR(target
, "ERROR: Out of memory");
2489 sprintf((char *)xtensa
->empty_regs
[i
].name
, "?0x%04x", i
& 0x0000FFFF);
2490 xtensa
->empty_regs
[i
].size
= 32;
2491 xtensa
->empty_regs
[i
].type
= &xtensa_reg_type
;
2492 xtensa
->empty_regs
[i
].value
= calloc(1, 4 /*XT_REG_LEN*/); /* make Clang Static Analyzer happy */
2493 if (!xtensa
->empty_regs
[i
].value
) {
2494 LOG_ERROR("Failed to alloc empty reg list value!");
2497 xtensa
->empty_regs
[i
].arch_info
= xtensa
;
2500 /* Construct contiguous register list from contiguous descriptor list */
2501 if (xtensa
->regmap_contiguous
&& xtensa
->contiguous_regs_desc
) {
2502 xtensa
->contiguous_regs_list
= calloc(xtensa
->total_regs_num
, sizeof(struct reg
*));
2503 if (!xtensa
->contiguous_regs_list
) {
2504 LOG_TARGET_ERROR(target
, "ERROR: Out of memory");
2507 for (unsigned int i
= 0; i
< xtensa
->total_regs_num
; i
++) {
2509 for (j
= 0; j
< reg_cache
->num_regs
; j
++) {
2510 if (!strcmp(reg_cache
->reg_list
[j
].name
, xtensa
->contiguous_regs_desc
[i
]->name
)) {
2511 xtensa
->contiguous_regs_list
[i
] = &(reg_cache
->reg_list
[j
]);
2512 LOG_TARGET_DEBUG(target
,
2513 "POPULATE contiguous regs list: %-16s, dbreg_num 0x%04x",
2514 xtensa
->contiguous_regs_list
[i
]->name
,
2515 xtensa
->contiguous_regs_desc
[i
]->dbreg_num
);
2519 if (j
== reg_cache
->num_regs
)
2520 LOG_TARGET_WARNING(target
, "contiguous register %s not found",
2521 xtensa
->contiguous_regs_desc
[i
]->name
);
2525 xtensa
->algo_context_backup
= calloc(reg_cache
->num_regs
, sizeof(void *));
2526 if (!xtensa
->algo_context_backup
) {
2527 LOG_ERROR("Failed to alloc mem for algorithm context backup!");
2530 for (unsigned int i
= 0; i
< reg_cache
->num_regs
; i
++) {
2531 struct reg
*reg
= ®_cache
->reg_list
[i
];
2532 xtensa
->algo_context_backup
[i
] = calloc(1, reg
->size
/ 8);
2533 if (!xtensa
->algo_context_backup
[i
]) {
2534 LOG_ERROR("Failed to alloc mem for algorithm context!");
2538 xtensa
->core_cache
= reg_cache
;
2540 *cache_p
= reg_cache
;
2545 for (unsigned int i
= 0; i
< reg_list_size
; i
++)
2546 free(reg_list
[i
].value
);
2549 if (xtensa
->empty_regs
) {
2550 for (unsigned int i
= 0; i
< xtensa
->dbregs_num
; i
++) {
2551 free((void *)xtensa
->empty_regs
[i
].name
);
2552 free(xtensa
->empty_regs
[i
].value
);
2554 free(xtensa
->empty_regs
);
2556 if (xtensa
->algo_context_backup
) {
2557 for (unsigned int i
= 0; i
< reg_cache
->num_regs
; i
++)
2558 free(xtensa
->algo_context_backup
[i
]);
2559 free(xtensa
->algo_context_backup
);
2566 static int32_t xtensa_gdbqc_parse_exec_tie_ops(struct target
*target
, char *opstr
)
2568 struct xtensa
*xtensa
= target_to_xtensa(target
);
2569 int32_t status
= ERROR_COMMAND_ARGUMENT_INVALID
;
2570 /* Process op[] list */
2571 while (opstr
&& (*opstr
== ':')) {
2573 unsigned int oplen
= strtoul(opstr
+ 1, &opstr
, 16);
2575 LOG_TARGET_ERROR(target
, "TIE access instruction too long (%d)\n", oplen
);
2579 while ((i
< oplen
) && opstr
&& (*opstr
== ':'))
2580 ops
[i
++] = strtoul(opstr
+ 1, &opstr
, 16);
2582 LOG_TARGET_ERROR(target
, "TIE access instruction malformed (%d)\n", i
);
2587 sprintf(insn_buf
, "Exec %d-byte TIE sequence: ", oplen
);
2588 for (i
= 0; i
< oplen
; i
++)
2589 sprintf(insn_buf
+ strlen(insn_buf
), "%02x:", ops
[i
]);
2590 LOG_TARGET_DEBUG(target
, "%s", insn_buf
);
2591 xtensa_queue_exec_ins_wide(xtensa
, ops
, oplen
); /* Handles endian-swap */
2597 static int xtensa_gdbqc_qxtreg(struct target
*target
, const char *packet
, char **response_p
)
2599 struct xtensa
*xtensa
= target_to_xtensa(target
);
2600 bool iswrite
= (packet
[0] == 'Q');
2601 enum xtensa_qerr_e error
;
2603 /* Read/write TIE register. Requires spill location.
2604 * qxtreg<num>:<len>:<oplen>:<op[0]>:<...>[:<oplen>:<op[0]>:<...>]
2605 * Qxtreg<num>:<len>:<oplen>:<op[0]>:<...>[:<oplen>:<op[0]>:<...>]=<value>
2607 if (!(xtensa
->spill_buf
)) {
2608 LOG_ERROR("Spill location not specified. Try 'target remote <host>:3333 &spill_location0'");
2609 error
= XT_QERR_FAIL
;
2610 goto xtensa_gdbqc_qxtreg_fail
;
2614 uint32_t regnum
= strtoul(packet
+ 6, &delim
, 16);
2615 if (*delim
!= ':') {
2616 LOG_ERROR("Malformed qxtreg packet");
2617 error
= XT_QERR_INVAL
;
2618 goto xtensa_gdbqc_qxtreg_fail
;
2620 uint32_t reglen
= strtoul(delim
+ 1, &delim
, 16);
2621 if (*delim
!= ':') {
2622 LOG_ERROR("Malformed qxtreg packet");
2623 error
= XT_QERR_INVAL
;
2624 goto xtensa_gdbqc_qxtreg_fail
;
2626 uint8_t regbuf
[XT_QUERYPKT_RESP_MAX
];
2627 memset(regbuf
, 0, XT_QUERYPKT_RESP_MAX
);
2628 LOG_DEBUG("TIE reg 0x%08" PRIx32
" %s (%d bytes)", regnum
, iswrite
? "write" : "read", reglen
);
2629 if (reglen
* 2 + 1 > XT_QUERYPKT_RESP_MAX
) {
2630 LOG_ERROR("TIE register too large");
2631 error
= XT_QERR_MEM
;
2632 goto xtensa_gdbqc_qxtreg_fail
;
2635 /* (1) Save spill memory, (1.5) [if write then store value to spill location],
2636 * (2) read old a4, (3) write spill address to a4.
2637 * NOTE: ensure a4 is restored properly by all error handling logic
2639 unsigned int memop_size
= (xtensa
->spill_loc
& 3) ? 1 : 4;
2640 int status
= xtensa_read_memory(target
, xtensa
->spill_loc
, memop_size
,
2641 xtensa
->spill_bytes
/ memop_size
, xtensa
->spill_buf
);
2642 if (status
!= ERROR_OK
) {
2643 LOG_ERROR("Spill memory save");
2644 error
= XT_QERR_MEM
;
2645 goto xtensa_gdbqc_qxtreg_fail
;
2648 /* Extract value and store in spill memory */
2650 char *valbuf
= strchr(delim
, '=');
2651 if (!(valbuf
&& (*valbuf
== '='))) {
2652 LOG_ERROR("Malformed Qxtreg packet");
2653 error
= XT_QERR_INVAL
;
2654 goto xtensa_gdbqc_qxtreg_fail
;
2657 while (*valbuf
&& *(valbuf
+ 1)) {
2658 char bytestr
[3] = { 0, 0, 0 };
2659 strncpy(bytestr
, valbuf
, 2);
2660 regbuf
[b
++] = strtoul(bytestr
, NULL
, 16);
2664 LOG_ERROR("Malformed Qxtreg packet");
2665 error
= XT_QERR_INVAL
;
2666 goto xtensa_gdbqc_qxtreg_fail
;
2668 status
= xtensa_write_memory(target
, xtensa
->spill_loc
, memop_size
,
2669 reglen
/ memop_size
, regbuf
);
2670 if (status
!= ERROR_OK
) {
2671 LOG_ERROR("TIE value store");
2672 error
= XT_QERR_MEM
;
2673 goto xtensa_gdbqc_qxtreg_fail
;
2676 xtensa_reg_val_t orig_a4
= xtensa_reg_get(target
, XT_REG_IDX_A4
);
2677 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, xtensa
->spill_loc
);
2678 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A4
));
2680 int32_t tieop_status
= xtensa_gdbqc_parse_exec_tie_ops(target
, delim
);
2682 /* Restore a4 but not yet spill memory. Execute it all... */
2683 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, orig_a4
);
2684 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A4
));
2685 status
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
2686 if (status
!= ERROR_OK
) {
2687 LOG_TARGET_ERROR(target
, "TIE queue execute: %d\n", status
);
2688 tieop_status
= status
;
2690 status
= xtensa_core_status_check(target
);
2691 if (status
!= ERROR_OK
) {
2692 LOG_TARGET_ERROR(target
, "TIE instr execute: %d\n", status
);
2693 tieop_status
= status
;
2696 if (tieop_status
== ERROR_OK
) {
2698 /* TIE write succeeded; send OK */
2699 strcpy(*response_p
, "OK");
2701 /* TIE read succeeded; copy result from spill memory */
2702 status
= xtensa_read_memory(target
, xtensa
->spill_loc
, memop_size
, reglen
, regbuf
);
2703 if (status
!= ERROR_OK
) {
2704 LOG_TARGET_ERROR(target
, "TIE result read");
2705 tieop_status
= status
;
2708 for (i
= 0; i
< reglen
; i
++)
2709 sprintf(*response_p
+ 2 * i
, "%02x", regbuf
[i
]);
2710 *(*response_p
+ 2 * i
) = '\0';
2711 LOG_TARGET_DEBUG(target
, "TIE response: %s", *response_p
);
2715 /* Restore spill memory first, then report any previous errors */
2716 status
= xtensa_write_memory(target
, xtensa
->spill_loc
, memop_size
,
2717 xtensa
->spill_bytes
/ memop_size
, xtensa
->spill_buf
);
2718 if (status
!= ERROR_OK
) {
2719 LOG_ERROR("Spill memory restore");
2720 error
= XT_QERR_MEM
;
2721 goto xtensa_gdbqc_qxtreg_fail
;
2723 if (tieop_status
!= ERROR_OK
) {
2724 LOG_ERROR("TIE execution");
2725 error
= XT_QERR_FAIL
;
2726 goto xtensa_gdbqc_qxtreg_fail
;
2730 xtensa_gdbqc_qxtreg_fail
:
2731 strcpy(*response_p
, xt_qerr
[error
].chrval
);
2732 return xt_qerr
[error
].intval
;
2735 int xtensa_gdb_query_custom(struct target
*target
, const char *packet
, char **response_p
)
2737 struct xtensa
*xtensa
= target_to_xtensa(target
);
2738 enum xtensa_qerr_e error
;
2739 if (!packet
|| !response_p
) {
2740 LOG_TARGET_ERROR(target
, "invalid parameter: packet %p response_p %p", packet
, response_p
);
2744 *response_p
= xtensa
->qpkt_resp
;
2745 if (strncmp(packet
, "qxtn", 4) == 0) {
2746 strcpy(*response_p
, "OpenOCD");
2748 } else if (strncasecmp(packet
, "qxtgdbversion=", 14) == 0) {
2750 } else if ((strncmp(packet
, "Qxtsis=", 7) == 0) || (strncmp(packet
, "Qxtsds=", 7) == 0)) {
2751 /* Confirm host cache params match core .cfg file */
2752 struct xtensa_cache_config
*cachep
= (packet
[4] == 'i') ?
2753 &xtensa
->core_config
->icache
: &xtensa
->core_config
->dcache
;
2754 unsigned int line_size
= 0, size
= 0, way_count
= 0;
2755 sscanf(&packet
[7], "%x,%x,%x", &line_size
, &size
, &way_count
);
2756 if ((cachep
->line_size
!= line_size
) ||
2757 (cachep
->size
!= size
) ||
2758 (cachep
->way_count
!= way_count
)) {
2759 LOG_TARGET_WARNING(target
, "%cCache mismatch; check xtensa-core-XXX.cfg file",
2760 cachep
== &xtensa
->core_config
->icache
? 'I' : 'D');
2762 strcpy(*response_p
, "OK");
2764 } else if ((strncmp(packet
, "Qxtiram=", 8) == 0) || (strncmp(packet
, "Qxtirom=", 8) == 0)) {
2765 /* Confirm host IRAM/IROM params match core .cfg file */
2766 struct xtensa_local_mem_config
*memp
= (packet
[5] == 'a') ?
2767 &xtensa
->core_config
->iram
: &xtensa
->core_config
->irom
;
2768 unsigned int base
= 0, size
= 0, i
;
2769 char *pkt
= (char *)&packet
[7];
2772 size
= strtoul(pkt
, &pkt
, 16);
2774 base
= strtoul(pkt
, &pkt
, 16);
2775 LOG_TARGET_DEBUG(target
, "memcheck: %dB @ 0x%08x", size
, base
);
2776 for (i
= 0; i
< memp
->count
; i
++) {
2777 if ((memp
->regions
[i
].base
== base
) && (memp
->regions
[i
].size
== size
))
2780 if (i
== memp
->count
) {
2781 LOG_TARGET_WARNING(target
, "%s mismatch; check xtensa-core-XXX.cfg file",
2782 memp
== &xtensa
->core_config
->iram
? "IRAM" : "IROM");
2785 for (i
= 0; i
< 11; i
++) {
2787 strtoul(pkt
, &pkt
, 16);
2789 } while (pkt
&& (pkt
[0] == ','));
2790 strcpy(*response_p
, "OK");
2792 } else if (strncmp(packet
, "Qxtexcmlvl=", 11) == 0) {
2793 /* Confirm host EXCM_LEVEL matches core .cfg file */
2794 unsigned int excm_level
= strtoul(&packet
[11], NULL
, 0);
2795 if (!xtensa
->core_config
->high_irq
.enabled
||
2796 (excm_level
!= xtensa
->core_config
->high_irq
.excm_level
))
2797 LOG_TARGET_WARNING(target
, "EXCM_LEVEL mismatch; check xtensa-core-XXX.cfg file");
2798 strcpy(*response_p
, "OK");
2800 } else if ((strncmp(packet
, "Qxtl2cs=", 8) == 0) ||
2801 (strncmp(packet
, "Qxtl2ca=", 8) == 0) ||
2802 (strncmp(packet
, "Qxtdensity=", 11) == 0)) {
2803 strcpy(*response_p
, "OK");
2805 } else if (strncmp(packet
, "Qxtspill=", 9) == 0) {
2807 uint32_t spill_loc
= strtoul(packet
+ 9, &delim
, 16);
2808 if (*delim
!= ':') {
2809 LOG_ERROR("Malformed Qxtspill packet");
2810 error
= XT_QERR_INVAL
;
2811 goto xtensa_gdb_query_custom_fail
;
2813 xtensa
->spill_loc
= spill_loc
;
2814 xtensa
->spill_bytes
= strtoul(delim
+ 1, NULL
, 16);
2815 if (xtensa
->spill_buf
)
2816 free(xtensa
->spill_buf
);
2817 xtensa
->spill_buf
= calloc(1, xtensa
->spill_bytes
);
2818 if (!xtensa
->spill_buf
) {
2819 LOG_ERROR("Spill buf alloc");
2820 error
= XT_QERR_MEM
;
2821 goto xtensa_gdb_query_custom_fail
;
2823 LOG_TARGET_DEBUG(target
, "Set spill 0x%08" PRIx32
" (%d)", xtensa
->spill_loc
, xtensa
->spill_bytes
);
2824 strcpy(*response_p
, "OK");
2826 } else if (strncasecmp(packet
, "qxtreg", 6) == 0) {
2827 return xtensa_gdbqc_qxtreg(target
, packet
, response_p
);
2828 } else if ((strncmp(packet
, "qTStatus", 8) == 0) ||
2829 (strncmp(packet
, "qxtftie", 7) == 0) ||
2830 (strncmp(packet
, "qxtstie", 7) == 0)) {
2831 /* Return empty string to indicate trace, TIE wire debug are unsupported */
2832 strcpy(*response_p
, "");
2836 /* Warn for all other queries, but do not return errors */
2837 LOG_TARGET_WARNING(target
, "Unknown target-specific query packet: %s", packet
);
2838 strcpy(*response_p
, "");
2841 xtensa_gdb_query_custom_fail
:
2842 strcpy(*response_p
, xt_qerr
[error
].chrval
);
2843 return xt_qerr
[error
].intval
;
2846 int xtensa_init_arch_info(struct target
*target
, struct xtensa
*xtensa
,
2847 const struct xtensa_debug_module_config
*dm_cfg
)
2849 target
->arch_info
= xtensa
;
2850 xtensa
->common_magic
= XTENSA_COMMON_MAGIC
;
2851 xtensa
->target
= target
;
2852 xtensa
->stepping_isr_mode
= XT_STEPPING_ISR_ON
;
2854 xtensa
->core_config
= calloc(1, sizeof(struct xtensa_config
));
2855 if (!xtensa
->core_config
) {
2856 LOG_ERROR("Xtensa configuration alloc failed\n");
2860 /* Default cache settings are disabled with 1 way */
2861 xtensa
->core_config
->icache
.way_count
= 1;
2862 xtensa
->core_config
->dcache
.way_count
= 1;
2864 /* chrval: AR3/AR4 register names will change with window mapping.
2865 * intval: tracks whether scratch register was set through gdb P packet.
2867 for (enum xtensa_ar_scratch_set_e s
= 0; s
< XT_AR_SCRATCH_NUM
; s
++) {
2868 xtensa
->scratch_ars
[s
].chrval
= calloc(8, sizeof(char));
2869 if (!xtensa
->scratch_ars
[s
].chrval
) {
2870 for (enum xtensa_ar_scratch_set_e f
= 0; f
< s
; f
++)
2871 free(xtensa
->scratch_ars
[f
].chrval
);
2872 free(xtensa
->core_config
);
2873 LOG_ERROR("Xtensa scratch AR alloc failed\n");
2876 xtensa
->scratch_ars
[s
].intval
= false;
2877 sprintf(xtensa
->scratch_ars
[s
].chrval
, "%s%d",
2878 ((s
== XT_AR_SCRATCH_A3
) || (s
== XT_AR_SCRATCH_A4
)) ? "a" : "ar",
2879 ((s
== XT_AR_SCRATCH_A3
) || (s
== XT_AR_SCRATCH_AR3
)) ? 3 : 4);
2882 return xtensa_dm_init(&xtensa
->dbg_mod
, dm_cfg
);
2885 void xtensa_set_permissive_mode(struct target
*target
, bool state
)
2887 target_to_xtensa(target
)->permissive_mode
= state
;
2890 int xtensa_target_init(struct command_context
*cmd_ctx
, struct target
*target
)
2892 struct xtensa
*xtensa
= target_to_xtensa(target
);
2894 xtensa
->come_online_probes_num
= 3;
2895 xtensa
->hw_brps
= calloc(XT_HW_IBREAK_MAX_NUM
, sizeof(struct breakpoint
*));
2896 if (!xtensa
->hw_brps
) {
2897 LOG_ERROR("Failed to alloc memory for HW breakpoints!");
2900 xtensa
->hw_wps
= calloc(XT_HW_DBREAK_MAX_NUM
, sizeof(struct watchpoint
*));
2901 if (!xtensa
->hw_wps
) {
2902 free(xtensa
->hw_brps
);
2903 LOG_ERROR("Failed to alloc memory for HW watchpoints!");
2906 xtensa
->sw_brps
= calloc(XT_SW_BREAKPOINTS_MAX_NUM
, sizeof(struct xtensa_sw_breakpoint
));
2907 if (!xtensa
->sw_brps
) {
2908 free(xtensa
->hw_brps
);
2909 free(xtensa
->hw_wps
);
2910 LOG_ERROR("Failed to alloc memory for SW breakpoints!");
2914 xtensa
->spill_loc
= 0xffffffff;
2915 xtensa
->spill_bytes
= 0;
2916 xtensa
->spill_buf
= NULL
;
2917 xtensa
->probe_lsddr32p
= -1; /* Probe for fast load/store operations */
2919 return xtensa_build_reg_cache(target
);
2922 static void xtensa_free_reg_cache(struct target
*target
)
2924 struct xtensa
*xtensa
= target_to_xtensa(target
);
2925 struct reg_cache
*cache
= xtensa
->core_cache
;
2928 register_unlink_cache(&target
->reg_cache
, cache
);
2929 for (unsigned int i
= 0; i
< cache
->num_regs
; i
++) {
2930 free(xtensa
->algo_context_backup
[i
]);
2931 free(cache
->reg_list
[i
].value
);
2933 free(xtensa
->algo_context_backup
);
2934 free(cache
->reg_list
);
2937 xtensa
->core_cache
= NULL
;
2938 xtensa
->algo_context_backup
= NULL
;
2940 if (xtensa
->empty_regs
) {
2941 for (unsigned int i
= 0; i
< xtensa
->dbregs_num
; i
++) {
2942 free((void *)xtensa
->empty_regs
[i
].name
);
2943 free(xtensa
->empty_regs
[i
].value
);
2945 free(xtensa
->empty_regs
);
2947 xtensa
->empty_regs
= NULL
;
2948 if (xtensa
->optregs
) {
2949 for (unsigned int i
= 0; i
< xtensa
->num_optregs
; i
++)
2950 free((void *)xtensa
->optregs
[i
].name
);
2951 free(xtensa
->optregs
);
2953 xtensa
->optregs
= NULL
;
2956 void xtensa_target_deinit(struct target
*target
)
2958 struct xtensa
*xtensa
= target_to_xtensa(target
);
2962 if (target_was_examined(target
)) {
2963 int ret
= xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DCRCLR
, OCDDCR_ENABLEOCD
);
2964 if (ret
!= ERROR_OK
) {
2965 LOG_ERROR("Failed to queue OCDDCR_ENABLEOCD clear operation!");
2968 xtensa_dm_queue_tdi_idle(&xtensa
->dbg_mod
);
2969 ret
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
2970 if (ret
!= ERROR_OK
) {
2971 LOG_ERROR("Failed to clear OCDDCR_ENABLEOCD!");
2974 xtensa_dm_deinit(&xtensa
->dbg_mod
);
2976 xtensa_free_reg_cache(target
);
2977 free(xtensa
->hw_brps
);
2978 free(xtensa
->hw_wps
);
2979 free(xtensa
->sw_brps
);
2980 if (xtensa
->spill_buf
) {
2981 free(xtensa
->spill_buf
);
2982 xtensa
->spill_buf
= NULL
;
2984 for (enum xtensa_ar_scratch_set_e s
= 0; s
< XT_AR_SCRATCH_NUM
; s
++)
2985 free(xtensa
->scratch_ars
[s
].chrval
);
2986 free(xtensa
->core_config
);
2989 const char *xtensa_get_gdb_arch(struct target
*target
)
2994 /* exe <ascii-encoded hexadecimal instruction bytes> */
2995 static COMMAND_HELPER(xtensa_cmd_exe_do
, struct target
*target
)
2997 struct xtensa
*xtensa
= target_to_xtensa(target
);
3000 return ERROR_COMMAND_SYNTAX_ERROR
;
3002 /* Process ascii-encoded hex byte string */
3003 const char *parm
= CMD_ARGV
[0];
3004 unsigned int parm_len
= strlen(parm
);
3005 if ((parm_len
>= 64) || (parm_len
& 1)) {
3006 LOG_ERROR("Invalid parameter length (%d): must be even, < 64 characters", parm_len
);
3012 unsigned int oplen
= parm_len
/ 2;
3013 char encoded_byte
[3] = { 0, 0, 0 };
3014 for (unsigned int i
= 0; i
< oplen
; i
++) {
3015 encoded_byte
[0] = *parm
++;
3016 encoded_byte
[1] = *parm
++;
3017 ops
[i
] = strtoul(encoded_byte
, NULL
, 16);
3020 /* GDB must handle state save/restore.
3021 * Flush reg cache in case spill location is in an AR
3022 * Update CPENABLE only for this execution; later restore cached copy
3023 * Keep a copy of exccause in case executed code triggers an exception
3025 int status
= xtensa_write_dirty_registers(target
);
3026 if (status
!= ERROR_OK
) {
3027 LOG_ERROR("%s: Failed to write back register cache.", target_name(target
));
3030 xtensa_reg_val_t exccause
= xtensa_reg_get(target
, XT_REG_IDX_EXCCAUSE
);
3031 xtensa_reg_val_t cpenable
= xtensa_reg_get(target
, XT_REG_IDX_CPENABLE
);
3032 xtensa_reg_val_t a3
= xtensa_reg_get(target
, XT_REG_IDX_A3
);
3033 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, 0xffffffff);
3034 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
3035 xtensa_queue_exec_ins(xtensa
, XT_INS_WSR(xtensa
,
3036 xtensa_regs
[XT_REG_IDX_CPENABLE
].reg_num
, XT_REG_A3
));
3037 xtensa_queue_dbg_reg_write(xtensa
, XDMREG_DDR
, a3
);
3038 xtensa_queue_exec_ins(xtensa
, XT_INS_RSR(xtensa
, XT_SR_DDR
, XT_REG_A3
));
3040 /* Queue instruction list and execute everything */
3041 LOG_TARGET_DEBUG(target
, "execute stub: %s", CMD_ARGV
[0]);
3042 xtensa_queue_exec_ins_wide(xtensa
, ops
, oplen
); /* Handles endian-swap */
3043 status
= xtensa_dm_queue_execute(&xtensa
->dbg_mod
);
3044 if (status
!= ERROR_OK
)
3045 LOG_TARGET_ERROR(target
, "TIE queue execute: %d\n", status
);
3046 status
= xtensa_core_status_check(target
);
3047 if (status
!= ERROR_OK
)
3048 LOG_TARGET_ERROR(target
, "TIE instr execute: %d\n", status
);
3050 /* Reread register cache and restore saved regs after instruction execution */
3051 if (xtensa_fetch_all_regs(target
) != ERROR_OK
)
3052 LOG_TARGET_ERROR(target
, "%s: Failed to fetch register cache (post-exec).", target_name(target
));
3053 xtensa_reg_set(target
, XT_REG_IDX_EXCCAUSE
, exccause
);
3054 xtensa_reg_set(target
, XT_REG_IDX_CPENABLE
, cpenable
);
3058 COMMAND_HANDLER(xtensa_cmd_exe
)
3060 return CALL_COMMAND_HANDLER(xtensa_cmd_exe_do
, get_current_target(CMD_CTX
));
3064 COMMAND_HELPER(xtensa_cmd_xtdef_do
, struct xtensa
*xtensa
)
3067 return ERROR_COMMAND_SYNTAX_ERROR
;
3069 const char *core_name
= CMD_ARGV
[0];
3070 if (strcasecmp(core_name
, "LX") == 0) {
3071 xtensa
->core_config
->core_type
= XT_LX
;
3073 LOG_ERROR("xtdef [LX]\n");
3074 return ERROR_COMMAND_SYNTAX_ERROR
;
3079 COMMAND_HANDLER(xtensa_cmd_xtdef
)
3081 return CALL_COMMAND_HANDLER(xtensa_cmd_xtdef_do
,
3082 target_to_xtensa(get_current_target(CMD_CTX
)));
3085 static inline bool xtensa_cmd_xtopt_legal_val(char *opt
, int val
, int min
, int max
)
3087 if ((val
< min
) || (val
> max
)) {
3088 LOG_ERROR("xtopt %s (%d) out of range [%d..%d]\n", opt
, val
, min
, max
);
3094 /* xtopt <name> <value> */
3095 COMMAND_HELPER(xtensa_cmd_xtopt_do
, struct xtensa
*xtensa
)
3098 return ERROR_COMMAND_SYNTAX_ERROR
;
3100 const char *opt_name
= CMD_ARGV
[0];
3101 int opt_val
= strtol(CMD_ARGV
[1], NULL
, 0);
3102 if (strcasecmp(opt_name
, "arnum") == 0) {
3103 if (!xtensa_cmd_xtopt_legal_val("arnum", opt_val
, 0, 64))
3104 return ERROR_COMMAND_ARGUMENT_INVALID
;
3105 xtensa
->core_config
->aregs_num
= opt_val
;
3106 } else if (strcasecmp(opt_name
, "windowed") == 0) {
3107 if (!xtensa_cmd_xtopt_legal_val("windowed", opt_val
, 0, 1))
3108 return ERROR_COMMAND_ARGUMENT_INVALID
;
3109 xtensa
->core_config
->windowed
= opt_val
;
3110 } else if (strcasecmp(opt_name
, "cpenable") == 0) {
3111 if (!xtensa_cmd_xtopt_legal_val("cpenable", opt_val
, 0, 1))
3112 return ERROR_COMMAND_ARGUMENT_INVALID
;
3113 xtensa
->core_config
->coproc
= opt_val
;
3114 } else if (strcasecmp(opt_name
, "exceptions") == 0) {
3115 if (!xtensa_cmd_xtopt_legal_val("exceptions", opt_val
, 0, 1))
3116 return ERROR_COMMAND_ARGUMENT_INVALID
;
3117 xtensa
->core_config
->exceptions
= opt_val
;
3118 } else if (strcasecmp(opt_name
, "intnum") == 0) {
3119 if (!xtensa_cmd_xtopt_legal_val("intnum", opt_val
, 0, 32))
3120 return ERROR_COMMAND_ARGUMENT_INVALID
;
3121 xtensa
->core_config
->irq
.enabled
= (opt_val
> 0);
3122 xtensa
->core_config
->irq
.irq_num
= opt_val
;
3123 } else if (strcasecmp(opt_name
, "hipriints") == 0) {
3124 if (!xtensa_cmd_xtopt_legal_val("hipriints", opt_val
, 0, 1))
3125 return ERROR_COMMAND_ARGUMENT_INVALID
;
3126 xtensa
->core_config
->high_irq
.enabled
= opt_val
;
3127 } else if (strcasecmp(opt_name
, "excmlevel") == 0) {
3128 if (!xtensa_cmd_xtopt_legal_val("excmlevel", opt_val
, 1, 6))
3129 return ERROR_COMMAND_ARGUMENT_INVALID
;
3130 if (!xtensa
->core_config
->high_irq
.enabled
) {
3131 LOG_ERROR("xtopt excmlevel requires hipriints\n");
3132 return ERROR_COMMAND_ARGUMENT_INVALID
;
3134 xtensa
->core_config
->high_irq
.excm_level
= opt_val
;
3135 } else if (strcasecmp(opt_name
, "intlevels") == 0) {
3136 if (xtensa
->core_config
->core_type
== XT_LX
) {
3137 if (!xtensa_cmd_xtopt_legal_val("intlevels", opt_val
, 2, 6))
3138 return ERROR_COMMAND_ARGUMENT_INVALID
;
3140 if (!xtensa_cmd_xtopt_legal_val("intlevels", opt_val
, 1, 255))
3141 return ERROR_COMMAND_ARGUMENT_INVALID
;
3143 if (!xtensa
->core_config
->high_irq
.enabled
) {
3144 LOG_ERROR("xtopt intlevels requires hipriints\n");
3145 return ERROR_COMMAND_ARGUMENT_INVALID
;
3147 xtensa
->core_config
->high_irq
.level_num
= opt_val
;
3148 } else if (strcasecmp(opt_name
, "debuglevel") == 0) {
3149 if (xtensa
->core_config
->core_type
== XT_LX
) {
3150 if (!xtensa_cmd_xtopt_legal_val("debuglevel", opt_val
, 2, 6))
3151 return ERROR_COMMAND_ARGUMENT_INVALID
;
3153 if (!xtensa_cmd_xtopt_legal_val("debuglevel", opt_val
, 0, 0))
3154 return ERROR_COMMAND_ARGUMENT_INVALID
;
3156 xtensa
->core_config
->debug
.enabled
= 1;
3157 xtensa
->core_config
->debug
.irq_level
= opt_val
;
3158 } else if (strcasecmp(opt_name
, "ibreaknum") == 0) {
3159 if (!xtensa_cmd_xtopt_legal_val("ibreaknum", opt_val
, 0, 2))
3160 return ERROR_COMMAND_ARGUMENT_INVALID
;
3161 xtensa
->core_config
->debug
.ibreaks_num
= opt_val
;
3162 } else if (strcasecmp(opt_name
, "dbreaknum") == 0) {
3163 if (!xtensa_cmd_xtopt_legal_val("dbreaknum", opt_val
, 0, 2))
3164 return ERROR_COMMAND_ARGUMENT_INVALID
;
3165 xtensa
->core_config
->debug
.dbreaks_num
= opt_val
;
3166 } else if (strcasecmp(opt_name
, "tracemem") == 0) {
3167 if (!xtensa_cmd_xtopt_legal_val("tracemem", opt_val
, 0, 256 * 1024))
3168 return ERROR_COMMAND_ARGUMENT_INVALID
;
3169 xtensa
->core_config
->trace
.mem_sz
= opt_val
;
3170 xtensa
->core_config
->trace
.enabled
= (opt_val
> 0);
3171 } else if (strcasecmp(opt_name
, "tracememrev") == 0) {
3172 if (!xtensa_cmd_xtopt_legal_val("tracememrev", opt_val
, 0, 1))
3173 return ERROR_COMMAND_ARGUMENT_INVALID
;
3174 xtensa
->core_config
->trace
.reversed_mem_access
= opt_val
;
3175 } else if (strcasecmp(opt_name
, "perfcount") == 0) {
3176 if (!xtensa_cmd_xtopt_legal_val("perfcount", opt_val
, 0, 8))
3177 return ERROR_COMMAND_ARGUMENT_INVALID
;
3178 xtensa
->core_config
->debug
.perfcount_num
= opt_val
;
3180 LOG_WARNING("Unknown xtensa command ignored: \"xtopt %s %s\"", CMD_ARGV
[0], CMD_ARGV
[1]);
3187 COMMAND_HANDLER(xtensa_cmd_xtopt
)
3189 return CALL_COMMAND_HANDLER(xtensa_cmd_xtopt_do
,
3190 target_to_xtensa(get_current_target(CMD_CTX
)));
3193 /* xtmem <type> [parameters] */
3194 COMMAND_HELPER(xtensa_cmd_xtmem_do
, struct xtensa
*xtensa
)
3196 struct xtensa_cache_config
*cachep
= NULL
;
3197 struct xtensa_local_mem_config
*memp
= NULL
;
3199 bool is_dcache
= false;
3201 if (CMD_ARGC
== 0) {
3202 LOG_ERROR("xtmem <type> [parameters]\n");
3203 return ERROR_COMMAND_SYNTAX_ERROR
;
3206 const char *mem_name
= CMD_ARGV
[0];
3207 if (strcasecmp(mem_name
, "icache") == 0) {
3208 cachep
= &xtensa
->core_config
->icache
;
3209 } else if (strcasecmp(mem_name
, "dcache") == 0) {
3210 cachep
= &xtensa
->core_config
->dcache
;
3212 } else if (strcasecmp(mem_name
, "l2cache") == 0) {
3213 /* TODO: support L2 cache */
3214 } else if (strcasecmp(mem_name
, "l2addr") == 0) {
3215 /* TODO: support L2 cache */
3216 } else if (strcasecmp(mem_name
, "iram") == 0) {
3217 memp
= &xtensa
->core_config
->iram
;
3218 mem_access
= XT_MEM_ACCESS_READ
| XT_MEM_ACCESS_WRITE
;
3219 } else if (strcasecmp(mem_name
, "dram") == 0) {
3220 memp
= &xtensa
->core_config
->dram
;
3221 mem_access
= XT_MEM_ACCESS_READ
| XT_MEM_ACCESS_WRITE
;
3222 } else if (strcasecmp(mem_name
, "sram") == 0) {
3223 memp
= &xtensa
->core_config
->sram
;
3224 mem_access
= XT_MEM_ACCESS_READ
| XT_MEM_ACCESS_WRITE
;
3225 } else if (strcasecmp(mem_name
, "irom") == 0) {
3226 memp
= &xtensa
->core_config
->irom
;
3227 mem_access
= XT_MEM_ACCESS_READ
;
3228 } else if (strcasecmp(mem_name
, "drom") == 0) {
3229 memp
= &xtensa
->core_config
->drom
;
3230 mem_access
= XT_MEM_ACCESS_READ
;
3231 } else if (strcasecmp(mem_name
, "srom") == 0) {
3232 memp
= &xtensa
->core_config
->srom
;
3233 mem_access
= XT_MEM_ACCESS_READ
;
3235 LOG_ERROR("xtmem types: <icache|dcache|l2cache|l2addr|iram|irom|dram|drom|sram|srom>\n");
3236 return ERROR_COMMAND_ARGUMENT_INVALID
;
3240 if ((CMD_ARGC
!= 4) && (CMD_ARGC
!= 5)) {
3241 LOG_ERROR("xtmem <cachetype> <linebytes> <cachebytes> <ways> [writeback]\n");
3242 return ERROR_COMMAND_SYNTAX_ERROR
;
3244 cachep
->line_size
= strtoul(CMD_ARGV
[1], NULL
, 0);
3245 cachep
->size
= strtoul(CMD_ARGV
[2], NULL
, 0);
3246 cachep
->way_count
= strtoul(CMD_ARGV
[3], NULL
, 0);
3247 cachep
->writeback
= ((CMD_ARGC
== 5) && is_dcache
) ?
3248 strtoul(CMD_ARGV
[4], NULL
, 0) : 0;
3250 if (CMD_ARGC
!= 3) {
3251 LOG_ERROR("xtmem <memtype> <baseaddr> <bytes>\n");
3252 return ERROR_COMMAND_SYNTAX_ERROR
;
3254 struct xtensa_local_mem_region_config
*memcfgp
= &memp
->regions
[memp
->count
];
3255 memcfgp
->base
= strtoul(CMD_ARGV
[1], NULL
, 0);
3256 memcfgp
->size
= strtoul(CMD_ARGV
[2], NULL
, 0);
3257 memcfgp
->access
= mem_access
;
3264 COMMAND_HANDLER(xtensa_cmd_xtmem
)
3266 return CALL_COMMAND_HANDLER(xtensa_cmd_xtmem_do
,
3267 target_to_xtensa(get_current_target(CMD_CTX
)));
3270 /* xtmpu <num FG seg> <min seg size> <lockable> <executeonly> */
3271 COMMAND_HELPER(xtensa_cmd_xtmpu_do
, struct xtensa
*xtensa
)
3273 if (CMD_ARGC
!= 4) {
3274 LOG_ERROR("xtmpu <num FG seg> <min seg size> <lockable> <executeonly>\n");
3275 return ERROR_COMMAND_SYNTAX_ERROR
;
3278 unsigned int nfgseg
= strtoul(CMD_ARGV
[0], NULL
, 0);
3279 unsigned int minsegsize
= strtoul(CMD_ARGV
[1], NULL
, 0);
3280 unsigned int lockable
= strtoul(CMD_ARGV
[2], NULL
, 0);
3281 unsigned int execonly
= strtoul(CMD_ARGV
[3], NULL
, 0);
3283 if ((nfgseg
> 32)) {
3284 LOG_ERROR("<nfgseg> must be within [0..32]\n");
3285 return ERROR_COMMAND_ARGUMENT_INVALID
;
3286 } else if (minsegsize
& (minsegsize
- 1)) {
3287 LOG_ERROR("<minsegsize> must be a power of 2 >= 32\n");
3288 return ERROR_COMMAND_ARGUMENT_INVALID
;
3289 } else if (lockable
> 1) {
3290 LOG_ERROR("<lockable> must be 0 or 1\n");
3291 return ERROR_COMMAND_ARGUMENT_INVALID
;
3292 } else if (execonly
> 1) {
3293 LOG_ERROR("<execonly> must be 0 or 1\n");
3294 return ERROR_COMMAND_ARGUMENT_INVALID
;
3297 xtensa
->core_config
->mpu
.enabled
= true;
3298 xtensa
->core_config
->mpu
.nfgseg
= nfgseg
;
3299 xtensa
->core_config
->mpu
.minsegsize
= minsegsize
;
3300 xtensa
->core_config
->mpu
.lockable
= lockable
;
3301 xtensa
->core_config
->mpu
.execonly
= execonly
;
3305 COMMAND_HANDLER(xtensa_cmd_xtmpu
)
3307 return CALL_COMMAND_HANDLER(xtensa_cmd_xtmpu_do
,
3308 target_to_xtensa(get_current_target(CMD_CTX
)));
3311 /* xtmmu <NIREFILLENTRIES> <NDREFILLENTRIES> <IVARWAY56> <DVARWAY56> */
3312 COMMAND_HELPER(xtensa_cmd_xtmmu_do
, struct xtensa
*xtensa
)
3314 if (CMD_ARGC
!= 2) {
3315 LOG_ERROR("xtmmu <NIREFILLENTRIES> <NDREFILLENTRIES>\n");
3316 return ERROR_COMMAND_SYNTAX_ERROR
;
3319 unsigned int nirefillentries
= strtoul(CMD_ARGV
[0], NULL
, 0);
3320 unsigned int ndrefillentries
= strtoul(CMD_ARGV
[1], NULL
, 0);
3321 if ((nirefillentries
!= 16) && (nirefillentries
!= 32)) {
3322 LOG_ERROR("<nirefillentries> must be 16 or 32\n");
3323 return ERROR_COMMAND_ARGUMENT_INVALID
;
3324 } else if ((ndrefillentries
!= 16) && (ndrefillentries
!= 32)) {
3325 LOG_ERROR("<ndrefillentries> must be 16 or 32\n");
3326 return ERROR_COMMAND_ARGUMENT_INVALID
;
3329 xtensa
->core_config
->mmu
.enabled
= true;
3330 xtensa
->core_config
->mmu
.itlb_entries_count
= nirefillentries
;
3331 xtensa
->core_config
->mmu
.dtlb_entries_count
= ndrefillentries
;
3335 COMMAND_HANDLER(xtensa_cmd_xtmmu
)
3337 return CALL_COMMAND_HANDLER(xtensa_cmd_xtmmu_do
,
3338 target_to_xtensa(get_current_target(CMD_CTX
)));
3342 * xtreg <regname> <regnum> */
3343 COMMAND_HELPER(xtensa_cmd_xtreg_do
, struct xtensa
*xtensa
)
3345 if (CMD_ARGC
== 1) {
3346 int32_t numregs
= strtoul(CMD_ARGV
[0], NULL
, 0);
3347 if ((numregs
<= 0) || (numregs
> UINT16_MAX
)) {
3348 LOG_ERROR("xtreg <numregs>: Invalid 'numregs' (%d)", numregs
);
3349 return ERROR_COMMAND_SYNTAX_ERROR
;
3351 if ((xtensa
->genpkt_regs_num
> 0) && (numregs
< (int32_t)xtensa
->genpkt_regs_num
)) {
3352 LOG_ERROR("xtregs (%d) must be larger than numgenregs (%d) (if xtregfmt specified)",
3353 numregs
, xtensa
->genpkt_regs_num
);
3354 return ERROR_COMMAND_SYNTAX_ERROR
;
3356 xtensa
->total_regs_num
= numregs
;
3357 xtensa
->core_regs_num
= 0;
3358 xtensa
->num_optregs
= 0;
3359 /* A little more memory than required, but saves a second initialization pass */
3360 xtensa
->optregs
= calloc(xtensa
->total_regs_num
, sizeof(struct xtensa_reg_desc
));
3361 if (!xtensa
->optregs
) {
3362 LOG_ERROR("Failed to allocate xtensa->optregs!");
3366 } else if (CMD_ARGC
!= 2) {
3367 return ERROR_COMMAND_SYNTAX_ERROR
;
3370 /* "xtregfmt contiguous" must be specified prior to the first "xtreg" definition
3371 * if general register (g-packet) requests or contiguous register maps are supported */
3372 if (xtensa
->regmap_contiguous
&& !xtensa
->contiguous_regs_desc
) {
3373 xtensa
->contiguous_regs_desc
= calloc(xtensa
->total_regs_num
, sizeof(struct xtensa_reg_desc
*));
3374 if (!xtensa
->contiguous_regs_desc
) {
3375 LOG_ERROR("Failed to allocate xtensa->contiguous_regs_desc!");
3380 const char *regname
= CMD_ARGV
[0];
3381 unsigned int regnum
= strtoul(CMD_ARGV
[1], NULL
, 0);
3382 if (regnum
> UINT16_MAX
) {
3383 LOG_ERROR("<regnum> must be a 16-bit number");
3384 return ERROR_COMMAND_ARGUMENT_INVALID
;
3387 if ((xtensa
->num_optregs
+ xtensa
->core_regs_num
) >= xtensa
->total_regs_num
) {
3388 if (xtensa
->total_regs_num
)
3389 LOG_ERROR("'xtreg %s 0x%04x': Too many registers (%d expected, %d core %d extended)",
3391 xtensa
->total_regs_num
, xtensa
->core_regs_num
, xtensa
->num_optregs
);
3393 LOG_ERROR("'xtreg %s 0x%04x': Number of registers unspecified",
3398 /* Determine whether register belongs in xtensa_regs[] or xtensa->xtensa_spec_regs[] */
3399 struct xtensa_reg_desc
*rptr
= &xtensa
->optregs
[xtensa
->num_optregs
];
3400 bool is_extended_reg
= true;
3402 for (ridx
= 0; ridx
< XT_NUM_REGS
; ridx
++) {
3403 if (strcmp(CMD_ARGV
[0], xtensa_regs
[ridx
].name
) == 0) {
3404 /* Flag core register as defined */
3405 rptr
= &xtensa_regs
[ridx
];
3406 xtensa
->core_regs_num
++;
3407 is_extended_reg
= false;
3413 if (is_extended_reg
) {
3414 /* Register ID, debugger-visible register ID */
3415 rptr
->name
= strdup(CMD_ARGV
[0]);
3416 rptr
->dbreg_num
= regnum
;
3417 rptr
->reg_num
= (regnum
& XT_REG_INDEX_MASK
);
3418 xtensa
->num_optregs
++;
3421 if ((regnum
& XT_REG_GENERAL_MASK
) == XT_REG_GENERAL_VAL
) {
3422 rptr
->type
= XT_REG_GENERAL
;
3423 } else if ((regnum
& XT_REG_USER_MASK
) == XT_REG_USER_VAL
) {
3424 rptr
->type
= XT_REG_USER
;
3425 } else if ((regnum
& XT_REG_FR_MASK
) == XT_REG_FR_VAL
) {
3426 rptr
->type
= XT_REG_FR
;
3427 } else if ((regnum
& XT_REG_SPECIAL_MASK
) == XT_REG_SPECIAL_VAL
) {
3428 rptr
->type
= XT_REG_SPECIAL
;
3429 } else if ((regnum
& XT_REG_RELGEN_MASK
) == XT_REG_RELGEN_VAL
) {
3430 /* WARNING: For these registers, regnum points to the
3431 * index of the corresponding ARx registers, NOT to
3432 * the processor register number! */
3433 rptr
->type
= XT_REG_RELGEN
;
3434 rptr
->reg_num
+= XT_REG_IDX_ARFIRST
;
3435 rptr
->dbreg_num
+= XT_REG_IDX_ARFIRST
;
3436 } else if ((regnum
& XT_REG_TIE_MASK
) != 0) {
3437 rptr
->type
= XT_REG_TIE
;
3439 rptr
->type
= XT_REG_OTHER
;
3442 /* Register flags */
3443 if ((strcmp(rptr
->name
, "mmid") == 0) || (strcmp(rptr
->name
, "eraccess") == 0) ||
3444 (strcmp(rptr
->name
, "ddr") == 0) || (strcmp(rptr
->name
, "intset") == 0) ||
3445 (strcmp(rptr
->name
, "intclear") == 0))
3446 rptr
->flags
= XT_REGF_NOREAD
;
3450 if ((rptr
->reg_num
== (XT_PS_REG_NUM_BASE
+ xtensa
->core_config
->debug
.irq_level
)) &&
3451 (xtensa
->core_config
->core_type
== XT_LX
) && (rptr
->type
== XT_REG_SPECIAL
)) {
3452 xtensa
->eps_dbglevel_idx
= XT_NUM_REGS
+ xtensa
->num_optregs
- 1;
3453 LOG_DEBUG("Setting PS (%s) index to %d", rptr
->name
, xtensa
->eps_dbglevel_idx
);
3455 } else if (strcmp(rptr
->name
, "cpenable") == 0) {
3456 xtensa
->core_config
->coproc
= true;
3459 /* Build out list of contiguous registers in specified order */
3460 unsigned int running_reg_count
= xtensa
->num_optregs
+ xtensa
->core_regs_num
;
3461 if (xtensa
->contiguous_regs_desc
) {
3462 assert((running_reg_count
<= xtensa
->total_regs_num
) && "contiguous register address internal error!");
3463 xtensa
->contiguous_regs_desc
[running_reg_count
- 1] = rptr
;
3465 if (xtensa_extra_debug_log
)
3466 LOG_DEBUG("Added %s register %-16s: 0x%04x/0x%02x t%d (%d of %d)",
3467 is_extended_reg
? "config-specific" : "core",
3468 rptr
->name
, rptr
->dbreg_num
, rptr
->reg_num
, rptr
->type
,
3469 is_extended_reg
? xtensa
->num_optregs
: ridx
,
3470 is_extended_reg
? xtensa
->total_regs_num
: XT_NUM_REGS
);
3474 COMMAND_HANDLER(xtensa_cmd_xtreg
)
3476 return CALL_COMMAND_HANDLER(xtensa_cmd_xtreg_do
,
3477 target_to_xtensa(get_current_target(CMD_CTX
)));
3480 /* xtregfmt <contiguous|sparse> [numgregs] */
3481 COMMAND_HELPER(xtensa_cmd_xtregfmt_do
, struct xtensa
*xtensa
)
3483 if ((CMD_ARGC
== 1) || (CMD_ARGC
== 2)) {
3484 if (!strcasecmp(CMD_ARGV
[0], "sparse")) {
3486 } else if (!strcasecmp(CMD_ARGV
[0], "contiguous")) {
3487 xtensa
->regmap_contiguous
= true;
3488 if (CMD_ARGC
== 2) {
3489 unsigned int numgregs
= strtoul(CMD_ARGV
[1], NULL
, 0);
3490 if ((numgregs
<= 0) ||
3491 ((numgregs
> xtensa
->total_regs_num
) &&
3492 (xtensa
->total_regs_num
> 0))) {
3493 LOG_ERROR("xtregfmt: if specified, numgregs (%d) must be <= numregs (%d)",
3494 numgregs
, xtensa
->total_regs_num
);
3495 return ERROR_COMMAND_SYNTAX_ERROR
;
3497 xtensa
->genpkt_regs_num
= numgregs
;
3502 return ERROR_COMMAND_SYNTAX_ERROR
;
3505 COMMAND_HANDLER(xtensa_cmd_xtregfmt
)
3507 return CALL_COMMAND_HANDLER(xtensa_cmd_xtregfmt_do
,
3508 target_to_xtensa(get_current_target(CMD_CTX
)));
3511 COMMAND_HELPER(xtensa_cmd_permissive_mode_do
, struct xtensa
*xtensa
)
3513 return CALL_COMMAND_HANDLER(handle_command_parse_bool
,
3514 &xtensa
->permissive_mode
, "xtensa permissive mode");
3517 COMMAND_HANDLER(xtensa_cmd_permissive_mode
)
3519 return CALL_COMMAND_HANDLER(xtensa_cmd_permissive_mode_do
,
3520 target_to_xtensa(get_current_target(CMD_CTX
)));
3523 /* perfmon_enable <counter_id> <select> [mask] [kernelcnt] [tracelevel] */
3524 COMMAND_HELPER(xtensa_cmd_perfmon_enable_do
, struct xtensa
*xtensa
)
3526 struct xtensa_perfmon_config config
= {
3529 .tracelevel
= -1 /* use DEBUGLEVEL by default */
3532 if (CMD_ARGC
< 2 || CMD_ARGC
> 6)
3533 return ERROR_COMMAND_SYNTAX_ERROR
;
3535 unsigned int counter_id
= strtoul(CMD_ARGV
[0], NULL
, 0);
3536 if (counter_id
>= XTENSA_MAX_PERF_COUNTERS
) {
3537 command_print(CMD
, "counter_id should be < %d", XTENSA_MAX_PERF_COUNTERS
);
3538 return ERROR_COMMAND_ARGUMENT_INVALID
;
3541 config
.select
= strtoul(CMD_ARGV
[1], NULL
, 0);
3542 if (config
.select
> XTENSA_MAX_PERF_SELECT
) {
3543 command_print(CMD
, "select should be < %d", XTENSA_MAX_PERF_SELECT
);
3544 return ERROR_COMMAND_ARGUMENT_INVALID
;
3547 if (CMD_ARGC
>= 3) {
3548 config
.mask
= strtoul(CMD_ARGV
[2], NULL
, 0);
3549 if (config
.mask
> XTENSA_MAX_PERF_MASK
) {
3550 command_print(CMD
, "mask should be < %d", XTENSA_MAX_PERF_MASK
);
3551 return ERROR_COMMAND_ARGUMENT_INVALID
;
3555 if (CMD_ARGC
>= 4) {
3556 config
.kernelcnt
= strtoul(CMD_ARGV
[3], NULL
, 0);
3557 if (config
.kernelcnt
> 1) {
3558 command_print(CMD
, "kernelcnt should be 0 or 1");
3559 return ERROR_COMMAND_ARGUMENT_INVALID
;
3563 if (CMD_ARGC
>= 5) {
3564 config
.tracelevel
= strtoul(CMD_ARGV
[4], NULL
, 0);
3565 if (config
.tracelevel
> 7) {
3566 command_print(CMD
, "tracelevel should be <=7");
3567 return ERROR_COMMAND_ARGUMENT_INVALID
;
3571 if (config
.tracelevel
== -1)
3572 config
.tracelevel
= xtensa
->core_config
->debug
.irq_level
;
3574 return xtensa_dm_perfmon_enable(&xtensa
->dbg_mod
, counter_id
, &config
);
3577 COMMAND_HANDLER(xtensa_cmd_perfmon_enable
)
3579 return CALL_COMMAND_HANDLER(xtensa_cmd_perfmon_enable_do
,
3580 target_to_xtensa(get_current_target(CMD_CTX
)));
3583 /* perfmon_dump [counter_id] */
3584 COMMAND_HELPER(xtensa_cmd_perfmon_dump_do
, struct xtensa
*xtensa
)
3587 return ERROR_COMMAND_SYNTAX_ERROR
;
3589 int counter_id
= -1;
3590 if (CMD_ARGC
== 1) {
3591 counter_id
= strtol(CMD_ARGV
[0], NULL
, 0);
3592 if (counter_id
> XTENSA_MAX_PERF_COUNTERS
) {
3593 command_print(CMD
, "counter_id should be < %d", XTENSA_MAX_PERF_COUNTERS
);
3594 return ERROR_COMMAND_ARGUMENT_INVALID
;
3598 unsigned int counter_start
= (counter_id
< 0) ? 0 : counter_id
;
3599 unsigned int counter_end
= (counter_id
< 0) ? XTENSA_MAX_PERF_COUNTERS
: counter_id
+ 1;
3600 for (unsigned int counter
= counter_start
; counter
< counter_end
; ++counter
) {
3601 char result_buf
[128] = { 0 };
3602 size_t result_pos
= snprintf(result_buf
, sizeof(result_buf
), "Counter %d: ", counter
);
3603 struct xtensa_perfmon_result result
;
3604 int res
= xtensa_dm_perfmon_dump(&xtensa
->dbg_mod
, counter
, &result
);
3605 if (res
!= ERROR_OK
)
3607 snprintf(result_buf
+ result_pos
, sizeof(result_buf
) - result_pos
,
3610 result
.overflow
? " (overflow)" : "");
3611 LOG_INFO("%s", result_buf
);
3617 COMMAND_HANDLER(xtensa_cmd_perfmon_dump
)
3619 return CALL_COMMAND_HANDLER(xtensa_cmd_perfmon_dump_do
,
3620 target_to_xtensa(get_current_target(CMD_CTX
)));
3623 COMMAND_HELPER(xtensa_cmd_mask_interrupts_do
, struct xtensa
*xtensa
)
3629 state
= xtensa
->stepping_isr_mode
;
3630 if (state
== XT_STEPPING_ISR_ON
)
3632 else if (state
== XT_STEPPING_ISR_OFF
)
3636 command_print(CMD
, "Current ISR step mode: %s", st
);
3639 /* Masking is ON -> interrupts during stepping are OFF, and vice versa */
3640 if (!strcasecmp(CMD_ARGV
[0], "off"))
3641 state
= XT_STEPPING_ISR_ON
;
3642 else if (!strcasecmp(CMD_ARGV
[0], "on"))
3643 state
= XT_STEPPING_ISR_OFF
;
3646 command_print(CMD
, "Argument unknown. Please pick one of ON, OFF");
3649 xtensa
->stepping_isr_mode
= state
;
3653 COMMAND_HANDLER(xtensa_cmd_mask_interrupts
)
3655 return CALL_COMMAND_HANDLER(xtensa_cmd_mask_interrupts_do
,
3656 target_to_xtensa(get_current_target(CMD_CTX
)));
3659 COMMAND_HELPER(xtensa_cmd_smpbreak_do
, struct target
*target
)
3664 if (CMD_ARGC
>= 1) {
3665 for (unsigned int i
= 0; i
< CMD_ARGC
; i
++) {
3666 if (!strcasecmp(CMD_ARGV
[0], "none")) {
3668 } else if (!strcasecmp(CMD_ARGV
[i
], "BreakIn")) {
3669 val
|= OCDDCR_BREAKINEN
;
3670 } else if (!strcasecmp(CMD_ARGV
[i
], "BreakOut")) {
3671 val
|= OCDDCR_BREAKOUTEN
;
3672 } else if (!strcasecmp(CMD_ARGV
[i
], "RunStallIn")) {
3673 val
|= OCDDCR_RUNSTALLINEN
;
3674 } else if (!strcasecmp(CMD_ARGV
[i
], "DebugModeOut")) {
3675 val
|= OCDDCR_DEBUGMODEOUTEN
;
3676 } else if (!strcasecmp(CMD_ARGV
[i
], "BreakInOut")) {
3677 val
|= OCDDCR_BREAKINEN
| OCDDCR_BREAKOUTEN
;
3678 } else if (!strcasecmp(CMD_ARGV
[i
], "RunStall")) {
3679 val
|= OCDDCR_RUNSTALLINEN
| OCDDCR_DEBUGMODEOUTEN
;
3681 command_print(CMD
, "Unknown arg %s", CMD_ARGV
[i
]);
3684 "use either BreakInOut, None or RunStall as arguments, or any combination of BreakIn, BreakOut, RunStallIn and DebugModeOut.");
3688 res
= xtensa_smpbreak_set(target
, val
);
3689 if (res
!= ERROR_OK
)
3690 command_print(CMD
, "Failed to set smpbreak config %d", res
);
3692 struct xtensa
*xtensa
= target_to_xtensa(target
);
3693 res
= xtensa_smpbreak_read(xtensa
, &val
);
3694 if (res
== ERROR_OK
)
3695 command_print(CMD
, "Current bits set:%s%s%s%s",
3696 (val
& OCDDCR_BREAKINEN
) ? " BreakIn" : "",
3697 (val
& OCDDCR_BREAKOUTEN
) ? " BreakOut" : "",
3698 (val
& OCDDCR_RUNSTALLINEN
) ? " RunStallIn" : "",
3699 (val
& OCDDCR_DEBUGMODEOUTEN
) ? " DebugModeOut" : ""
3702 command_print(CMD
, "Failed to get smpbreak config %d", res
);
3707 COMMAND_HANDLER(xtensa_cmd_smpbreak
)
3709 return CALL_COMMAND_HANDLER(xtensa_cmd_smpbreak_do
,
3710 get_current_target(CMD_CTX
));
3713 COMMAND_HELPER(xtensa_cmd_tracestart_do
, struct xtensa
*xtensa
)
3715 struct xtensa_trace_status trace_status
;
3716 struct xtensa_trace_start_config cfg
= {
3718 .stopmask
= XTENSA_STOPMASK_DISABLED
,
3720 .after_is_words
= false
3723 /* Parse arguments */
3724 for (unsigned int i
= 0; i
< CMD_ARGC
; i
++) {
3725 if ((!strcasecmp(CMD_ARGV
[i
], "pc")) && CMD_ARGC
> i
) {
3728 cfg
.stoppc
= strtol(CMD_ARGV
[i
], &e
, 0);
3731 cfg
.stopmask
= strtol(e
, NULL
, 0);
3732 } else if ((!strcasecmp(CMD_ARGV
[i
], "after")) && CMD_ARGC
> i
) {
3734 cfg
.after
= strtol(CMD_ARGV
[i
], NULL
, 0);
3735 } else if (!strcasecmp(CMD_ARGV
[i
], "ins")) {
3736 cfg
.after_is_words
= 0;
3737 } else if (!strcasecmp(CMD_ARGV
[i
], "words")) {
3738 cfg
.after_is_words
= 1;
3740 command_print(CMD
, "Did not understand %s", CMD_ARGV
[i
]);
3745 int res
= xtensa_dm_trace_status_read(&xtensa
->dbg_mod
, &trace_status
);
3746 if (res
!= ERROR_OK
)
3748 if (trace_status
.stat
& TRAXSTAT_TRACT
) {
3749 LOG_WARNING("Silently stop active tracing!");
3750 res
= xtensa_dm_trace_stop(&xtensa
->dbg_mod
, false);
3751 if (res
!= ERROR_OK
)
3755 res
= xtensa_dm_trace_start(&xtensa
->dbg_mod
, &cfg
);
3756 if (res
!= ERROR_OK
)
3759 xtensa
->trace_active
= true;
3760 command_print(CMD
, "Trace started.");
3764 COMMAND_HANDLER(xtensa_cmd_tracestart
)
3766 return CALL_COMMAND_HANDLER(xtensa_cmd_tracestart_do
,
3767 target_to_xtensa(get_current_target(CMD_CTX
)));
3770 COMMAND_HELPER(xtensa_cmd_tracestop_do
, struct xtensa
*xtensa
)
3772 struct xtensa_trace_status trace_status
;
3774 int res
= xtensa_dm_trace_status_read(&xtensa
->dbg_mod
, &trace_status
);
3775 if (res
!= ERROR_OK
)
3778 if (!(trace_status
.stat
& TRAXSTAT_TRACT
)) {
3779 command_print(CMD
, "No trace is currently active.");
3783 res
= xtensa_dm_trace_stop(&xtensa
->dbg_mod
, true);
3784 if (res
!= ERROR_OK
)
3787 xtensa
->trace_active
= false;
3788 command_print(CMD
, "Trace stop triggered.");
3792 COMMAND_HANDLER(xtensa_cmd_tracestop
)
3794 return CALL_COMMAND_HANDLER(xtensa_cmd_tracestop_do
,
3795 target_to_xtensa(get_current_target(CMD_CTX
)));
3798 COMMAND_HELPER(xtensa_cmd_tracedump_do
, struct xtensa
*xtensa
, const char *fname
)
3800 struct xtensa_trace_config trace_config
;
3801 struct xtensa_trace_status trace_status
;
3802 uint32_t memsz
, wmem
;
3804 int res
= xtensa_dm_trace_status_read(&xtensa
->dbg_mod
, &trace_status
);
3805 if (res
!= ERROR_OK
)
3808 if (trace_status
.stat
& TRAXSTAT_TRACT
) {
3809 command_print(CMD
, "Tracing is still active. Please stop it first.");
3813 res
= xtensa_dm_trace_config_read(&xtensa
->dbg_mod
, &trace_config
);
3814 if (res
!= ERROR_OK
)
3817 if (!(trace_config
.ctrl
& TRAXCTRL_TREN
)) {
3818 command_print(CMD
, "No active trace found; nothing to dump.");
3822 memsz
= trace_config
.memaddr_end
- trace_config
.memaddr_start
+ 1;
3823 LOG_INFO("Total trace memory: %d words", memsz
);
3824 if ((trace_config
.addr
&
3825 ((TRAXADDR_TWRAP_MASK
<< TRAXADDR_TWRAP_SHIFT
) | TRAXADDR_TWSAT
)) == 0) {
3826 /*Memory hasn't overwritten itself yet. */
3827 wmem
= trace_config
.addr
& TRAXADDR_TADDR_MASK
;
3828 LOG_INFO("...but trace is only %d words", wmem
);
3832 if (trace_config
.addr
& TRAXADDR_TWSAT
) {
3833 LOG_INFO("Real trace is many times longer than that (overflow)");
3835 uint32_t trc_sz
= (trace_config
.addr
>> TRAXADDR_TWRAP_SHIFT
) & TRAXADDR_TWRAP_MASK
;
3836 trc_sz
= (trc_sz
* memsz
) + (trace_config
.addr
& TRAXADDR_TADDR_MASK
);
3837 LOG_INFO("Real trace is %d words, but the start has been truncated.", trc_sz
);
3841 uint8_t *tracemem
= malloc(memsz
* 4);
3843 command_print(CMD
, "Failed to alloc memory for trace data!");
3846 res
= xtensa_dm_trace_data_read(&xtensa
->dbg_mod
, tracemem
, memsz
* 4);
3847 if (res
!= ERROR_OK
) {
3852 int f
= open(fname
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0666);
3855 command_print(CMD
, "Unable to open file %s", fname
);
3858 if (write(f
, tracemem
, memsz
* 4) != (int)memsz
* 4)
3859 command_print(CMD
, "Unable to write to file %s", fname
);
3861 command_print(CMD
, "Written %d bytes of trace data to %s", memsz
* 4, fname
);
3864 bool is_all_zeroes
= true;
3865 for (unsigned int i
= 0; i
< memsz
* 4; i
++) {
3866 if (tracemem
[i
] != 0) {
3867 is_all_zeroes
= false;
3875 "WARNING: File written is all zeroes. Are you sure you enabled trace memory?");
3880 COMMAND_HANDLER(xtensa_cmd_tracedump
)
3882 if (CMD_ARGC
!= 1) {
3883 command_print(CMD
, "Command takes exactly 1 parameter.Need filename to dump to as output!");
3887 return CALL_COMMAND_HANDLER(xtensa_cmd_tracedump_do
,
3888 target_to_xtensa(get_current_target(CMD_CTX
)), CMD_ARGV
[0]);
3891 static const struct command_registration xtensa_any_command_handlers
[] = {
3894 .handler
= xtensa_cmd_xtdef
,
3895 .mode
= COMMAND_CONFIG
,
3896 .help
= "Configure Xtensa core type",
3901 .handler
= xtensa_cmd_xtopt
,
3902 .mode
= COMMAND_CONFIG
,
3903 .help
= "Configure Xtensa core option",
3904 .usage
= "<name> <value>",
3908 .handler
= xtensa_cmd_xtmem
,
3909 .mode
= COMMAND_CONFIG
,
3910 .help
= "Configure Xtensa memory/cache option",
3911 .usage
= "<type> [parameters]",
3915 .handler
= xtensa_cmd_xtmmu
,
3916 .mode
= COMMAND_CONFIG
,
3917 .help
= "Configure Xtensa MMU option",
3918 .usage
= "<NIREFILLENTRIES> <NDREFILLENTRIES> <IVARWAY56> <DVARWAY56>",
3922 .handler
= xtensa_cmd_xtmpu
,
3923 .mode
= COMMAND_CONFIG
,
3924 .help
= "Configure Xtensa MPU option",
3925 .usage
= "<num FG seg> <min seg size> <lockable> <executeonly>",
3929 .handler
= xtensa_cmd_xtreg
,
3930 .mode
= COMMAND_CONFIG
,
3931 .help
= "Configure Xtensa register",
3932 .usage
= "<regname> <regnum>",
3936 .handler
= xtensa_cmd_xtreg
,
3937 .mode
= COMMAND_CONFIG
,
3938 .help
= "Configure number of Xtensa registers",
3939 .usage
= "<numregs>",
3943 .handler
= xtensa_cmd_xtregfmt
,
3944 .mode
= COMMAND_CONFIG
,
3945 .help
= "Configure format of Xtensa register map",
3946 .usage
= "<contiguous|sparse> [numgregs]",
3949 .name
= "set_permissive",
3950 .handler
= xtensa_cmd_permissive_mode
,
3951 .mode
= COMMAND_ANY
,
3952 .help
= "When set to 1, enable Xtensa permissive mode (fewer client-side checks)",
3957 .handler
= xtensa_cmd_mask_interrupts
,
3958 .mode
= COMMAND_ANY
,
3959 .help
= "mask Xtensa interrupts at step",
3960 .usage
= "['on'|'off']",
3964 .handler
= xtensa_cmd_smpbreak
,
3965 .mode
= COMMAND_ANY
,
3966 .help
= "Set the way the CPU chains OCD breaks",
3967 .usage
= "[none|breakinout|runstall] | [BreakIn] [BreakOut] [RunStallIn] [DebugModeOut]",
3970 .name
= "perfmon_enable",
3971 .handler
= xtensa_cmd_perfmon_enable
,
3972 .mode
= COMMAND_EXEC
,
3973 .help
= "Enable and start performance counter",
3974 .usage
= "<counter_id> <select> [mask] [kernelcnt] [tracelevel]",
3977 .name
= "perfmon_dump",
3978 .handler
= xtensa_cmd_perfmon_dump
,
3979 .mode
= COMMAND_EXEC
,
3980 .help
= "Dump performance counter value. If no argument specified, dumps all counters.",
3981 .usage
= "[counter_id]",
3984 .name
= "tracestart",
3985 .handler
= xtensa_cmd_tracestart
,
3986 .mode
= COMMAND_EXEC
,
3988 "Tracing: Set up and start a trace. Optionally set stop trigger address and amount of data captured after.",
3989 .usage
= "[pc <pcval>/[maskbitcount]] [after <n> [ins|words]]",
3992 .name
= "tracestop",
3993 .handler
= xtensa_cmd_tracestop
,
3994 .mode
= COMMAND_EXEC
,
3995 .help
= "Tracing: Stop current trace as started by the tracestart command",
3999 .name
= "tracedump",
4000 .handler
= xtensa_cmd_tracedump
,
4001 .mode
= COMMAND_EXEC
,
4002 .help
= "Tracing: Dump trace memory to a files. One file per core.",
4003 .usage
= "<outfile>",
4007 .handler
= xtensa_cmd_exe
,
4008 .mode
= COMMAND_ANY
,
4009 .help
= "Xtensa stub execution",
4010 .usage
= "<ascii-encoded hexadecimal instruction bytes>",
4012 COMMAND_REGISTRATION_DONE
4015 const struct command_registration xtensa_command_handlers
[] = {
4018 .mode
= COMMAND_ANY
,
4019 .help
= "Xtensa command group",
4021 .chain
= xtensa_any_command_handlers
,
4023 COMMAND_REGISTRATION_DONE