/***************************************************************************
* Copyright (C) 2009 by David Brownell *
* *
+ * Copyright (C) ST-Ericsson SA 2011 michel.jaouen@stericsson.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include "replacements.h"
+#include <helper/replacements.h>
#include "armv7a.h"
#include "arm_disassembler.h"
-#include "target.h"
#include "register.h"
-#include "log.h"
-#include "binarybuffer.h"
-#include "command.h"
+#include <helper/binarybuffer.h>
+#include <helper/command.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include "arm_opcodes.h"
+#include "target.h"
+#include "target_type.h"
-char* armv7a_core_reg_list[] =
+static void armv7a_show_fault_registers(struct target *target)
{
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13_usr", "lr_usr", "pc",
- "r8_fiq", "r9_fiq", "r10_fiq", "r11_fiq", "r12_fiq", "r13_fiq", "lr_fiq",
- "r13_irq", "lr_irq",
- "r13_svc", "lr_svc",
- "r13_abt", "lr_abt",
- "r13_und", "lr_und",
- "cpsr", "spsr_fiq", "spsr_irq", "spsr_svc", "spsr_abt", "spsr_und",
- "r13_mon", "lr_mon", "spsr_mon"
-};
+ uint32_t dfsr, ifsr, dfar, ifar;
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ int retval;
+
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ return;
+
+ /* ARMV4_5_MRC(cpnum, op1, r0, CRn, CRm, op2) */
+
+ /* c5/c0 - {data, instruction} fault status registers */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 5, 0, 0),
+ &dfsr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 5, 0, 1),
+ &ifsr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* c6/c0 - {data, instruction} fault address registers */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 6, 0, 0),
+ &dfar);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 6, 0, 2),
+ &ifar);
+ if (retval != ERROR_OK)
+ goto done;
-char * armv7a_mode_strings_list[] =
-{
- "Illegal mode value", "User", "FIQ", "IRQ",
- "Supervisor", "Abort", "Undefined", "System", "Monitor"
-};
+ LOG_USER("Data fault registers DFSR: %8.8" PRIx32
+ ", DFAR: %8.8" PRIx32, dfsr, dfar);
+ LOG_USER("Instruction fault registers IFSR: %8.8" PRIx32
+ ", IFAR: %8.8" PRIx32, ifsr, ifar);
-/* Hack! Yuk! allow -1 index, which simplifies codepaths elsewhere in the code */
-char** armv7a_mode_strings = armv7a_mode_strings_list+1;
+done:
+ /* (void) */ dpm->finish(dpm);
+}
-char* armv7a_state_strings[] =
-{
- "ARM", "Thumb", "Jazelle", "ThumbEE"
-};
-struct armv7a_core_reg armv7a_core_reg_list_arch_info[] =
+/* retrieve main id register */
+static int armv7a_read_midr(struct target *target)
{
- {0, ARMV4_5_MODE_ANY, NULL, NULL},
- {1, ARMV4_5_MODE_ANY, NULL, NULL},
- {2, ARMV4_5_MODE_ANY, NULL, NULL},
- {3, ARMV4_5_MODE_ANY, NULL, NULL},
- {4, ARMV4_5_MODE_ANY, NULL, NULL},
- {5, ARMV4_5_MODE_ANY, NULL, NULL},
- {6, ARMV4_5_MODE_ANY, NULL, NULL},
- {7, ARMV4_5_MODE_ANY, NULL, NULL},
- {8, ARMV4_5_MODE_ANY, NULL, NULL},
- {9, ARMV4_5_MODE_ANY, NULL, NULL},
- {10, ARMV4_5_MODE_ANY, NULL, NULL},
- {11, ARMV4_5_MODE_ANY, NULL, NULL},
- {12, ARMV4_5_MODE_ANY, NULL, NULL},
- {13, ARMV4_5_MODE_USR, NULL, NULL},
- {14, ARMV4_5_MODE_USR, NULL, NULL},
- {15, ARMV4_5_MODE_ANY, NULL, NULL},
-
- {8, ARMV4_5_MODE_FIQ, NULL, NULL},
- {9, ARMV4_5_MODE_FIQ, NULL, NULL},
- {10, ARMV4_5_MODE_FIQ, NULL, NULL},
- {11, ARMV4_5_MODE_FIQ, NULL, NULL},
- {12, ARMV4_5_MODE_FIQ, NULL, NULL},
- {13, ARMV4_5_MODE_FIQ, NULL, NULL},
- {14, ARMV4_5_MODE_FIQ, NULL, NULL},
-
- {13, ARMV4_5_MODE_IRQ, NULL, NULL},
- {14, ARMV4_5_MODE_IRQ, NULL, NULL},
-
- {13, ARMV4_5_MODE_SVC, NULL, NULL},
- {14, ARMV4_5_MODE_SVC, NULL, NULL},
-
- {13, ARMV4_5_MODE_ABT, NULL, NULL},
- {14, ARMV4_5_MODE_ABT, NULL, NULL},
-
- {13, ARMV4_5_MODE_UND, NULL, NULL},
- {14, ARMV4_5_MODE_UND, NULL, NULL},
-
- {16, ARMV4_5_MODE_ANY, NULL, NULL},
- {16, ARMV4_5_MODE_FIQ, NULL, NULL},
- {16, ARMV4_5_MODE_IRQ, NULL, NULL},
- {16, ARMV4_5_MODE_SVC, NULL, NULL},
- {16, ARMV4_5_MODE_ABT, NULL, NULL},
- {16, ARMV4_5_MODE_UND, NULL, NULL},
-
- {13, ARMV7A_MODE_MON, NULL, NULL},
- {14, ARMV7A_MODE_MON, NULL, NULL},
- {16, ARMV7A_MODE_MON, NULL, NULL}
-};
+ int retval = ERROR_FAIL;
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t midr;
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+ /* MRC p15,0,<Rd>,c0,c0,0; read main id register*/
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 0, 0, 0),
+ &midr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ armv7a->rev = (midr & 0xf);
+ armv7a->partnum = (midr >> 4) & 0xfff;
+ armv7a->arch = (midr >> 16) & 0xf;
+ armv7a->variant = (midr >> 20) & 0xf;
+ armv7a->implementor = (midr >> 24) & 0xff;
+ LOG_INFO("%s rev %" PRIx32 ", partnum %" PRIx32 ", arch %" PRIx32
+ ", variant %" PRIx32 ", implementor %" PRIx32,
+ target->cmd_name,
+ armv7a->rev,
+ armv7a->partnum,
+ armv7a->arch,
+ armv7a->variant,
+ armv7a->implementor);
+
+done:
+ dpm->finish(dpm);
+ return retval;
+}
-/* map core mode (USR, FIQ, ...) and register number to indizes into the register cache */
-int armv7a_core_reg_map[8][17] =
+static int armv7a_read_ttbcr(struct target *target)
{
- { /* USR */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
- },
- { /* FIQ */
- 0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 15, 32
- },
- { /* IRQ */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 15, 33
- },
- { /* SVC */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 25, 26, 15, 34
- },
- { /* ABT */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 27, 28, 15, 35
- },
- { /* UND */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 29, 30, 15, 36
- },
- { /* SYS */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
- },
- { /* MON */
- /* TODO Fix the register mapping for mon, we need r13_mon,
- * r14_mon and spsr_mon
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t ttbcr;
+ uint32_t ttbr0, ttbr1;
+ int retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+ /* MRC p15,0,<Rt>,c2,c0,2 ; Read CP15 Translation Table Base Control Register*/
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, 2),
+ &ttbcr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, 0),
+ &ttbr0);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, 1),
+ &ttbr1);
+ if (retval != ERROR_OK)
+ goto done;
+
+ LOG_INFO("ttbcr %" PRIx32 "ttbr0 %" PRIx32 "ttbr1 %" PRIx32, ttbcr, ttbr0, ttbr1);
+
+ armv7a->armv7a_mmu.ttbr1_used = ((ttbcr & 0x7) != 0) ? 1 : 0;
+ armv7a->armv7a_mmu.ttbr0_mask = 0;
+
+ retval = armv7a_read_midr(target);
+ if (retval != ERROR_OK)
+ goto done;
+
+ if (armv7a->partnum & 0xf) {
+ /*
+ * ARM Architecture Reference Manual (ARMv7-A and ARMv7-Redition),
+ * document # ARM DDI 0406C
*/
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
+ armv7a->armv7a_mmu.ttbr0_mask = 1 << (14 - ((ttbcr & 0x7)));
+ } else {
+ /* ARM DDI 0344H , ARM DDI 0407F */
+ armv7a->armv7a_mmu.ttbr0_mask = 7 << (32 - ((ttbcr & 0x7)));
+ /* fix me , default is hard coded LINUX border */
+ armv7a->armv7a_mmu.os_border = 0xc0000000;
}
-};
-/* FIXME this dummy is IDENTICAL to the armv4_5, arm11, and armv7m
- * ones... except for naming/scoping
- */
-uint8_t armv7a_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+ LOG_DEBUG("ttbr1 %s, ttbr0_mask %" PRIx32,
+ armv7a->armv7a_mmu.ttbr1_used ? "used" : "not used",
+ armv7a->armv7a_mmu.ttbr0_mask);
-struct reg armv7a_gdb_dummy_fp_reg =
-{
- .name = "GDB dummy floating-point register",
- .value = armv7a_gdb_dummy_fp_value,
- .dirty = 0,
- .valid = 1,
- .size = 96,
- .arch_info = NULL,
- .arch_type = 0,
-};
+ if (armv7a->armv7a_mmu.ttbr1_used == 1) {
+ LOG_INFO("SVC access above %" PRIx32,
+ (0xffffffff & armv7a->armv7a_mmu.ttbr0_mask));
+ armv7a->armv7a_mmu.os_border = 0xffffffff & armv7a->armv7a_mmu.ttbr0_mask;
+ }
+done:
+ dpm->finish(dpm);
+ return retval;
+}
-void armv7a_show_fault_registers(struct target *target)
+/* method adapted to cortex A : reused arm v4 v5 method*/
+int armv7a_mmu_translate_va(struct target *target, uint32_t va, uint32_t *val)
{
- uint32_t dfsr, ifsr, dfar, ifar;
+ uint32_t first_lvl_descriptor = 0x0;
+ uint32_t second_lvl_descriptor = 0x0;
+ int retval;
struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t ttb = 0; /* default ttb0 */
+ if (armv7a->armv7a_mmu.ttbr1_used == -1)
+ armv7a_read_ttbcr(target);
+ if ((armv7a->armv7a_mmu.ttbr1_used) &&
+ (va > (0xffffffff & armv7a->armv7a_mmu.ttbr0_mask))) {
+ /* select ttb 1 */
+ ttb = 1;
+ }
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* MRC p15,0,<Rt>,c2,c0,ttb */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, ttb),
+ &ttb);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = armv7a->armv7a_mmu.read_physical_memory(target,
+ (ttb & 0xffffc000) | ((va & 0xfff00000) >> 18),
+ 4, 1, (uint8_t *)&first_lvl_descriptor);
+ if (retval != ERROR_OK)
+ return retval;
+ first_lvl_descriptor = target_buffer_get_u32(target, (uint8_t *)
+ &first_lvl_descriptor);
+ /* reuse armv4_5 piece of code, specific armv7a changes may come later */
+ LOG_DEBUG("1st lvl desc: %8.8" PRIx32 "", first_lvl_descriptor);
+
+ if ((first_lvl_descriptor & 0x3) == 0) {
+ LOG_ERROR("Address translation failure");
+ return ERROR_TARGET_TRANSLATION_FAULT;
+ }
- armv7a->read_cp15(target, 0, 0, 5, 0, &dfsr);
- armv7a->read_cp15(target, 0, 1, 5, 0, &ifsr);
- armv7a->read_cp15(target, 0, 0, 6, 0, &dfar);
- armv7a->read_cp15(target, 0, 2, 6, 0, &ifar);
- LOG_USER("Data fault registers DFSR: %8.8" PRIx32
- ", DFAR: %8.8" PRIx32, dfsr, dfar);
- LOG_USER("Instruction fault registers IFSR: %8.8" PRIx32
- ", IFAR: %8.8" PRIx32, ifsr, ifar);
+ if ((first_lvl_descriptor & 0x40002) == 2) {
+ /* section descriptor */
+ *val = (first_lvl_descriptor & 0xfff00000) | (va & 0x000fffff);
+ return ERROR_OK;
+ } else if ((first_lvl_descriptor & 0x40002) == 0x40002) {
+ /* supersection descriptor */
+ if (first_lvl_descriptor & 0x00f001e0) {
+ LOG_ERROR("Physical address does not fit into 32 bits");
+ return ERROR_TARGET_TRANSLATION_FAULT;
+ }
+ *val = (first_lvl_descriptor & 0xff000000) | (va & 0x00ffffff);
+ return ERROR_OK;
+ }
-}
+ /* page table */
+ retval = armv7a->armv7a_mmu.read_physical_memory(target,
+ (first_lvl_descriptor & 0xfffffc00) | ((va & 0x000ff000) >> 10),
+ 4, 1, (uint8_t *)&second_lvl_descriptor);
+ if (retval != ERROR_OK)
+ return retval;
-int armv7a_arch_state(struct target *target)
-{
- static const char *state[] =
- {
- "disabled", "enabled"
- };
+ second_lvl_descriptor = target_buffer_get_u32(target, (uint8_t *)
+ &second_lvl_descriptor);
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct armv4_5_common_s *armv4_5 = &armv7a->armv4_5_common;
+ LOG_DEBUG("2nd lvl desc: %8.8" PRIx32 "", second_lvl_descriptor);
- if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
- {
- LOG_ERROR("BUG: called for a non-ARMv4/5 target");
- exit(-1);
+ if ((second_lvl_descriptor & 0x3) == 0) {
+ LOG_ERROR("Address translation failure");
+ return ERROR_TARGET_TRANSLATION_FAULT;
}
- LOG_USER("target halted in %s state due to %s, current mode: %s\n"
- "%s: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "\n"
- "MMU: %s, D-Cache: %s, I-Cache: %s",
- armv7a_state_strings[armv7a->core_state],
- Jim_Nvp_value2name_simple(nvp_target_debug_reason,
- target->debug_reason)->name,
- armv7a_mode_strings[
- armv7a_mode_to_number(armv4_5->core_mode)],
- armv7a_core_reg_list[armv7a_core_reg_map[
- armv7a_mode_to_number(armv4_5->core_mode)][16]],
- buf_get_u32(ARMV7A_CORE_REG_MODE(armv4_5->core_cache,
- armv4_5->core_mode, 16).value, 0, 32),
- buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
- state[armv7a->armv4_5_mmu.mmu_enabled],
- state[armv7a->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
- state[armv7a->armv4_5_mmu.armv4_5_cache.i_cache_enabled]);
-
- if (armv4_5->core_mode == ARMV7A_MODE_ABT)
- armv7a_show_fault_registers(target);
+ if ((second_lvl_descriptor & 0x3) == 1) {
+ /* large page descriptor */
+ *val = (second_lvl_descriptor & 0xffff0000) | (va & 0x0000ffff);
+ } else {
+ /* small page descriptor */
+ *val = (second_lvl_descriptor & 0xfffff000) | (va & 0x00000fff);
+ }
return ERROR_OK;
-}
+done:
+ return retval;
+}
-COMMAND_HANDLER(handle_dap_baseaddr_command)
+/* V7 method VA TO PA */
+int armv7a_mmu_translate_va_pa(struct target *target, uint32_t va,
+ uint32_t *val, int meminfo)
{
- struct target *target = get_current_target(cmd_ctx);
+ int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct swjdp_common *swjdp = &armv7a->swjdp_info;
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t virt = va & ~0xfff;
+ uint32_t NOS, NS, INNER, OUTER;
+ *val = 0xdeadbeef;
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+ /* mmu must be enable in order to get a correct translation
+ * use VA to PA CP15 register for conversion */
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MCR(15, 0, 0, 7, 8, 0),
+ virt);
+ if (retval != ERROR_OK)
+ goto done;
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 7, 4, 0),
+ val);
+ /* decode memory attribute */
+ NOS = (*val >> 10) & 1; /* Not Outer shareable */
+ NS = (*val >> 9) & 1; /* Non secure */
+ INNER = (*val >> 4) & 0x7;
+ OUTER = (*val >> 2) & 0x3;
+
+ if (retval != ERROR_OK)
+ goto done;
+ *val = (*val & ~0xfff) + (va & 0xfff);
+ if (*val == va)
+ LOG_WARNING("virt = phys : MMU disable !!");
+ if (meminfo) {
+ LOG_INFO("%" PRIx32 " : %" PRIx32 " %s outer shareable %s secured",
+ va, *val,
+ NOS == 1 ? "not" : " ",
+ NS == 1 ? "not" : "");
+ switch (OUTER) {
+ case 0:
+ LOG_INFO("outer: Non-Cacheable");
+ break;
+ case 1:
+ LOG_INFO("outer: Write-Back, Write-Allocate");
+ break;
+ case 2:
+ LOG_INFO("outer: Write-Through, No Write-Allocate");
+ break;
+ case 3:
+ LOG_INFO("outer: Write-Back, no Write-Allocate");
+ break;
+ }
+ switch (INNER) {
+ case 0:
+ LOG_INFO("inner: Non-Cacheable");
+ break;
+ case 1:
+ LOG_INFO("inner: Strongly-ordered");
+ break;
+ case 3:
+ LOG_INFO("inner: Device");
+ break;
+ case 5:
+ LOG_INFO("inner: Write-Back, Write-Allocate");
+ break;
+ case 6:
+ LOG_INFO("inner: Write-Through");
+ break;
+ case 7:
+ LOG_INFO("inner: Write-Back, no Write-Allocate");
+
+ default:
+ LOG_INFO("inner: %" PRIx32 " ???", INNER);
+ }
+ }
+
+done:
+ dpm->finish(dpm);
- return CALL_COMMAND_HANDLER(dap_baseaddr_command, swjdp);
+ return retval;
}
-COMMAND_HANDLER(handle_dap_memaccess_command)
+static int armv7a_handle_inner_cache_info_command(struct command_context *cmd_ctx,
+ struct armv7a_cache_common *armv7a_cache)
{
- struct target *target = get_current_target(cmd_ctx);
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct swjdp_common *swjdp = &armv7a->swjdp_info;
+ if (armv7a_cache->ctype == -1) {
+ command_print(cmd_ctx, "cache not yet identified");
+ return ERROR_OK;
+ }
+
+ command_print(cmd_ctx,
+ "D-Cache: linelen %" PRIi32 ", associativity %" PRIi32 ", nsets %" PRIi32 ", cachesize %" PRId32 " KBytes",
+ armv7a_cache->d_u_size.linelen,
+ armv7a_cache->d_u_size.associativity,
+ armv7a_cache->d_u_size.nsets,
+ armv7a_cache->d_u_size.cachesize);
+
+ command_print(cmd_ctx,
+ "I-Cache: linelen %" PRIi32 ", associativity %" PRIi32 ", nsets %" PRIi32 ", cachesize %" PRId32 " KBytes",
+ armv7a_cache->i_size.linelen,
+ armv7a_cache->i_size.associativity,
+ armv7a_cache->i_size.nsets,
+ armv7a_cache->i_size.cachesize);
- return CALL_COMMAND_HANDLER(dap_memaccess_command, swjdp);
+ return ERROR_OK;
+}
+
+static int _armv7a_flush_all_data(struct target *target)
+{
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ struct armv7a_cachesize *d_u_size =
+ &(armv7a->armv7a_mmu.armv7a_cache.d_u_size);
+ int32_t c_way, c_index = d_u_size->index;
+ int retval;
+ /* check that cache data is on at target halt */
+ if (!armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled) {
+ LOG_INFO("flushed not performed :cache not on at target halt");
+ return ERROR_OK;
+ }
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+ do {
+ c_way = d_u_size->way;
+ do {
+ uint32_t value = (c_index << d_u_size->index_shift)
+ | (c_way << d_u_size->way_shift);
+ /* DCCISW */
+ /* LOG_INFO ("%d %d %x",c_way,c_index,value); */
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MCR(15, 0, 0, 7, 14, 2),
+ value);
+ if (retval != ERROR_OK)
+ goto done;
+ c_way -= 1;
+ } while (c_way >= 0);
+ c_index -= 1;
+ } while (c_index >= 0);
+ return retval;
+done:
+ LOG_ERROR("flushed failed");
+ dpm->finish(dpm);
+ return retval;
}
-COMMAND_HANDLER(handle_dap_apsel_command)
+static int armv7a_flush_all_data(struct target *target)
{
- struct target *target = get_current_target(cmd_ctx);
+ int retval = ERROR_FAIL;
+ /* check that armv7a_cache is correctly identify */
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct swjdp_common *swjdp = &armv7a->swjdp_info;
+ if (armv7a->armv7a_mmu.armv7a_cache.ctype == -1) {
+ LOG_ERROR("trying to flush un-identified cache");
+ return retval;
+ }
- return CALL_COMMAND_HANDLER(dap_apsel_command, swjdp);
+ if (target->smp) {
+ /* look if all the other target have been flushed in order to flush level
+ * 2 */
+ struct target_list *head;
+ struct target *curr;
+ head = target->head;
+ while (head != (struct target_list *)NULL) {
+ curr = head->target;
+ if (curr->state == TARGET_HALTED) {
+ LOG_INFO("Wait flushing data l1 on core %" PRId32, curr->coreid);
+ retval = _armv7a_flush_all_data(curr);
+ }
+ head = head->next;
+ }
+ } else
+ retval = _armv7a_flush_all_data(target);
+ return retval;
}
-COMMAND_HANDLER(handle_dap_apid_command)
+/* L2 is not specific to armv7a a specific file is needed */
+static int armv7a_l2x_flush_all_data(struct target *target)
{
- struct target *target = get_current_target(cmd_ctx);
+
+#define L2X0_CLEAN_INV_WAY 0x7FC
+ int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct swjdp_common *swjdp = &armv7a->swjdp_info;
+ struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
+ (armv7a->armv7a_mmu.armv7a_cache.l2_cache);
+ uint32_t base = l2x_cache->base;
+ uint32_t l2_way = l2x_cache->way;
+ uint32_t l2_way_val = (1 << l2_way) - 1;
+ retval = armv7a_flush_all_data(target);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = target->type->write_phys_memory(target,
+ (uint32_t)(base+(uint32_t)L2X0_CLEAN_INV_WAY),
+ (uint32_t)4,
+ (uint32_t)1,
+ (uint8_t *)&l2_way_val);
+ return retval;
+}
+
+static int armv7a_handle_l2x_cache_info_command(struct command_context *cmd_ctx,
+ struct armv7a_cache_common *armv7a_cache)
+{
- return CALL_COMMAND_HANDLER(dap_apid_command, swjdp);
+ struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
+ (armv7a_cache->l2_cache);
+
+ if (armv7a_cache->ctype == -1) {
+ command_print(cmd_ctx, "cache not yet identified");
+ return ERROR_OK;
+ }
+
+ command_print(cmd_ctx,
+ "L1 D-Cache: linelen %" PRIi32 ", associativity %" PRIi32 ", nsets %" PRIi32 ", cachesize %" PRId32 " KBytes",
+ armv7a_cache->d_u_size.linelen,
+ armv7a_cache->d_u_size.associativity,
+ armv7a_cache->d_u_size.nsets,
+ armv7a_cache->d_u_size.cachesize);
+
+ command_print(cmd_ctx,
+ "L1 I-Cache: linelen %" PRIi32 ", associativity %" PRIi32 ", nsets %" PRIi32 ", cachesize %" PRId32 " KBytes",
+ armv7a_cache->i_size.linelen,
+ armv7a_cache->i_size.associativity,
+ armv7a_cache->i_size.nsets,
+ armv7a_cache->i_size.cachesize);
+ command_print(cmd_ctx, "L2 unified cache Base Address 0x%" PRIx32 ", %" PRId32 " ways",
+ l2x_cache->base, l2x_cache->way);
+
+
+ return ERROR_OK;
}
-COMMAND_HANDLER(handle_dap_info_command)
+
+static int armv7a_l2x_cache_init(struct target *target, uint32_t base, uint32_t way)
{
- struct target *target = get_current_target(cmd_ctx);
+ struct armv7a_l2x_cache *l2x_cache;
+ struct target_list *head = target->head;
+ struct target *curr;
+
struct armv7a_common *armv7a = target_to_armv7a(target);
- struct swjdp_common *swjdp = &armv7a->swjdp_info;
- uint32_t apsel;
-
- switch (argc) {
- case 0:
- apsel = swjdp->apsel;
- break;
- case 1:
- COMMAND_PARSE_NUMBER(u32, args[0], apsel);
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
+ l2x_cache = calloc(1, sizeof(struct armv7a_l2x_cache));
+ l2x_cache->base = base;
+ l2x_cache->way = way;
+ /*LOG_INFO("cache l2 initialized base %x way %d",
+ l2x_cache->base,l2x_cache->way);*/
+ if (armv7a->armv7a_mmu.armv7a_cache.l2_cache)
+ LOG_INFO("cache l2 already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.l2_cache = l2x_cache;
+ /* initialize l1 / l2x cache function */
+ armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache
+ = armv7a_l2x_flush_all_data;
+ armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
+ armv7a_handle_l2x_cache_info_command;
+ /* initialize all target in this cluster (smp target)
+ * l2 cache must be configured after smp declaration */
+ while (head != (struct target_list *)NULL) {
+ curr = head->target;
+ if (curr != target) {
+ armv7a = target_to_armv7a(curr);
+ if (armv7a->armv7a_mmu.armv7a_cache.l2_cache)
+ LOG_ERROR("smp target : cache l2 already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.l2_cache = l2x_cache;
+ armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache =
+ armv7a_l2x_flush_all_data;
+ armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
+ armv7a_handle_l2x_cache_info_command;
+ }
+ head = head->next;
}
+ return JIM_OK;
+}
+
+COMMAND_HANDLER(handle_cache_l2x)
+{
+ struct target *target = get_current_target(CMD_CTX);
+ uint32_t base, way;
+
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ /* command_print(CMD_CTX, "%s %s", CMD_ARGV[0], CMD_ARGV[1]); */
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], base);
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], way);
+
+ /* AP address is in bits 31:24 of DP_SELECT */
+ armv7a_l2x_cache_init(target, base, way);
- return dap_info_command(cmd_ctx, swjdp, apsel);
+ return ERROR_OK;
}
-COMMAND_HANDLER(handle_armv7a_disassemble_command)
+int armv7a_handle_cache_info_command(struct command_context *cmd_ctx,
+ struct armv7a_cache_common *armv7a_cache)
{
- struct target *target = get_current_target(cmd_ctx);
- struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
- int thumb = 0;
- int count = 1;
- uint32_t address;
- int i;
-
- if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC) {
- command_print(cmd_ctx, "current target isn't an ARM target");
+ if (armv7a_cache->ctype == -1) {
+ command_print(cmd_ctx, "cache not yet identified");
return ERROR_OK;
}
- /* REVISIT: eventually support ThumbEE disassembly too;
- * some opcodes work differently.
- */
-
- switch (argc) {
- case 3:
- if (strcmp(args[2], "thumb") != 0)
- goto usage;
- thumb = 1;
- /* FALL THROUGH */
- case 2:
- COMMAND_PARSE_NUMBER(int, args[1], count);
- /* FALL THROUGH */
- case 1:
- COMMAND_PARSE_NUMBER(u32, args[0], address);
- if (address & 0x01) {
- if (!thumb) {
- command_print(cmd_ctx, "Disassemble as Thumb");
- thumb = 1;
- }
- address &= ~1;
- }
- break;
- default:
-usage:
- command_print(cmd_ctx,
- "usage: armv7a disassemble <address> [<count> ['thumb']]");
- return ERROR_OK;
+ if (armv7a_cache->display_cache_info)
+ armv7a_cache->display_cache_info(cmd_ctx, armv7a_cache);
+ return ERROR_OK;
+}
+
+/* retrieve core id cluster id */
+static int armv7a_read_mpidr(struct target *target)
+{
+ int retval = ERROR_FAIL;
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t mpidr;
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+ /* MRC p15,0,<Rd>,c0,c0,5; read Multiprocessor ID register*/
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 0, 0, 5),
+ &mpidr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* ARMv7R uses a different format for MPIDR.
+ * When configured uniprocessor (most R cores) it reads as 0.
+ * This will need to be implemented for multiprocessor ARMv7R cores. */
+ if (armv7a->is_armv7r) {
+ if (mpidr)
+ LOG_ERROR("MPIDR nonzero in ARMv7-R target");
+ goto done;
}
- for (i = 0; i < count; i++) {
- struct arm_instruction cur_instruction;
- int retval;
+ if (mpidr & 1<<31) {
+ armv7a->multi_processor_system = (mpidr >> 30) & 1;
+ armv7a->cluster_id = (mpidr >> 8) & 0xf;
+ armv7a->cpu_id = mpidr & 0x3;
+ LOG_INFO("%s cluster %x core %x %s", target_name(target),
+ armv7a->cluster_id,
+ armv7a->cpu_id,
+ armv7a->multi_processor_system == 0 ? "multi core" : "mono core");
- if (thumb) {
- retval = thumb2_opcode(target, address, &cur_instruction);
- if (retval != ERROR_OK)
- return retval;
+ } else
+ LOG_ERROR("MPIDR not in multiprocessor format");
- address += cur_instruction.instruction_size;
- } else {
- uint32_t opcode;
+done:
+ dpm->finish(dpm);
+ return retval;
- retval = target_read_u32(target, address, &opcode);
- if (retval != ERROR_OK)
- return retval;
- retval = arm_evaluate_opcode(opcode, address,
- &cur_instruction);
- if (retval != ERROR_OK)
- return retval;
+}
- address += 4;
- }
- command_print(cmd_ctx, "%s", cur_instruction.text);
+int armv7a_identify_cache(struct target *target)
+{
+ /* read cache descriptor */
+ int retval = ERROR_FAIL;
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t cache_selected, clidr;
+ uint32_t cache_i_reg, cache_d_reg;
+ struct armv7a_cache_common *cache = &(armv7a->armv7a_mmu.armv7a_cache);
+ if (!armv7a->is_armv7r)
+ armv7a_read_ttbcr(target);
+ retval = dpm->prepare(dpm);
+
+ if (retval != ERROR_OK)
+ goto done;
+ /* retrieve CLIDR
+ * mrc p15, 1, r0, c0, c0, 1 @ read clidr */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 1, 0, 0, 0, 1),
+ &clidr);
+ if (retval != ERROR_OK)
+ goto done;
+ clidr = (clidr & 0x7000000) >> 23;
+ LOG_INFO("number of cache level %" PRIx32, (uint32_t)(clidr / 2));
+ if ((clidr / 2) > 1) {
+ /* FIXME not supported present in cortex A8 and later */
+ /* in cortex A7, A15 */
+ LOG_ERROR("cache l2 present :not supported");
+ }
+ /* retrieve selected cache
+ * MRC p15, 2,<Rd>, c0, c0, 0; Read CSSELR */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ &cache_selected);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = armv7a->arm.mrc(target, 15,
+ 2, 0, /* op1, op2 */
+ 0, 0, /* CRn, CRm */
+ &cache_selected);
+ if (retval != ERROR_OK)
+ goto done;
+ /* select instruction cache
+ * MCR p15, 2,<Rd>, c0, c0, 0; Write CSSELR
+ * [0] : 1 instruction cache selection , 0 data cache selection */
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ 1);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* read CCSIDR
+ * MRC P15,1,<RT>,C0, C0,0 ;on cortex A9 read CCSIDR
+ * [2:0] line size 001 eight word per line
+ * [27:13] NumSet 0x7f 16KB, 0xff 32Kbytes, 0x1ff 64Kbytes */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
+ &cache_i_reg);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* select data cache*/
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ 0);
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
+ &cache_d_reg);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* restore selected cache */
+ dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ cache_selected);
+
+ if (retval != ERROR_OK)
+ goto done;
+ dpm->finish(dpm);
+
+ /* put fake type */
+ cache->d_u_size.linelen = 16 << (cache_d_reg & 0x7);
+ cache->d_u_size.cachesize = (((cache_d_reg >> 13) & 0x7fff)+1)/8;
+ cache->d_u_size.nsets = (cache_d_reg >> 13) & 0x7fff;
+ cache->d_u_size.associativity = ((cache_d_reg >> 3) & 0x3ff) + 1;
+ /* compute info for set way operation on cache */
+ cache->d_u_size.index_shift = (cache_d_reg & 0x7) + 4;
+ cache->d_u_size.index = (cache_d_reg >> 13) & 0x7fff;
+ cache->d_u_size.way = ((cache_d_reg >> 3) & 0x3ff);
+ cache->d_u_size.way_shift = cache->d_u_size.way + 1;
+ {
+ int i = 0;
+ while (((cache->d_u_size.way_shift >> i) & 1) != 1)
+ i++;
+ cache->d_u_size.way_shift = 32-i;
}
+#if 0
+ LOG_INFO("data cache index %d << %d, way %d << %d",
+ cache->d_u_size.index, cache->d_u_size.index_shift,
+ cache->d_u_size.way,
+ cache->d_u_size.way_shift);
+
+ LOG_INFO("data cache %d bytes %d KBytes asso %d ways",
+ cache->d_u_size.linelen,
+ cache->d_u_size.cachesize,
+ cache->d_u_size.associativity);
+#endif
+ cache->i_size.linelen = 16 << (cache_i_reg & 0x7);
+ cache->i_size.associativity = ((cache_i_reg >> 3) & 0x3ff) + 1;
+ cache->i_size.nsets = (cache_i_reg >> 13) & 0x7fff;
+ cache->i_size.cachesize = (((cache_i_reg >> 13) & 0x7fff)+1)/8;
+ /* compute info for set way operation on cache */
+ cache->i_size.index_shift = (cache_i_reg & 0x7) + 4;
+ cache->i_size.index = (cache_i_reg >> 13) & 0x7fff;
+ cache->i_size.way = ((cache_i_reg >> 3) & 0x3ff);
+ cache->i_size.way_shift = cache->i_size.way + 1;
+ {
+ int i = 0;
+ while (((cache->i_size.way_shift >> i) & 1) != 1)
+ i++;
+ cache->i_size.way_shift = 32-i;
+ }
+#if 0
+ LOG_INFO("instruction cache index %d << %d, way %d << %d",
+ cache->i_size.index, cache->i_size.index_shift,
+ cache->i_size.way, cache->i_size.way_shift);
+
+ LOG_INFO("instruction cache %d bytes %d KBytes asso %d ways",
+ cache->i_size.linelen,
+ cache->i_size.cachesize,
+ cache->i_size.associativity);
+#endif
+ /* if no l2 cache initialize l1 data cache flush function function */
+ if (armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache == NULL) {
+ armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
+ armv7a_handle_inner_cache_info_command;
+ armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache =
+ armv7a_flush_all_data;
+ }
+ armv7a->armv7a_mmu.armv7a_cache.ctype = 0;
+done:
+ dpm->finish(dpm);
+ armv7a_read_mpidr(target);
+ return retval;
+
+}
+
+int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a)
+{
+ struct arm *arm = &armv7a->arm;
+ arm->arch_info = armv7a;
+ target->arch_info = &armv7a->arm;
+ /* target is useful in all function arm v4 5 compatible */
+ armv7a->arm.target = target;
+ armv7a->arm.common_magic = ARM_COMMON_MAGIC;
+ armv7a->common_magic = ARMV7_COMMON_MAGIC;
+ armv7a->armv7a_mmu.armv7a_cache.l2_cache = NULL;
+ armv7a->armv7a_mmu.armv7a_cache.ctype = -1;
+ armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache = NULL;
+ armv7a->armv7a_mmu.armv7a_cache.display_cache_info = NULL;
return ERROR_OK;
}
-int armv7a_register_commands(struct command_context *cmd_ctx)
+int armv7a_arch_state(struct target *target)
{
- struct command *arm_adi_v5_dap_cmd;
- struct command *armv7a_cmd;
-
- arm_adi_v5_dap_cmd = register_command(cmd_ctx, NULL, "dap",
- NULL, COMMAND_ANY,
- "cortex dap specific commands");
-
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "info",
- handle_dap_info_command, COMMAND_EXEC,
- "dap info for ap [num], "
- "default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apsel",
- handle_dap_apsel_command, COMMAND_EXEC,
- "select a different AP [num] (default 0)");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apid",
- handle_dap_apid_command, COMMAND_EXEC,
- "return id reg from AP [num], "
- "default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "baseaddr",
- handle_dap_baseaddr_command, COMMAND_EXEC,
- "return debug base address from AP [num], "
- "default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "memaccess",
- handle_dap_memaccess_command, COMMAND_EXEC,
- "set/get number of extra tck for mem-ap memory "
- "bus access [0-255]");
-
- armv7a_cmd = register_command(cmd_ctx, NULL, "armv7a",
- NULL, COMMAND_ANY,
- "ARMv7-A specific commands");
-
- register_command(cmd_ctx, armv7a_cmd, "disassemble",
- handle_armv7a_disassemble_command, COMMAND_EXEC,
- "disassemble instructions <address> [<count> ['thumb']]");
+ static const char *state[] = {
+ "disabled", "enabled"
+ };
+
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm *arm = &armv7a->arm;
+
+ if (armv7a->common_magic != ARMV7_COMMON_MAGIC) {
+ LOG_ERROR("BUG: called for a non-ARMv7A target");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ arm_arch_state(target);
+
+ if (armv7a->is_armv7r) {
+ LOG_USER("D-Cache: %s, I-Cache: %s",
+ state[armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.i_cache_enabled]);
+ } else {
+ LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s",
+ state[armv7a->armv7a_mmu.mmu_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.i_cache_enabled]);
+ }
+
+ if (arm->core_mode == ARM_MODE_ABT)
+ armv7a_show_fault_registers(target);
+ if (target->debug_reason == DBG_REASON_WATCHPOINT)
+ LOG_USER("Watchpoint triggered at PC %#08x",
+ (unsigned) armv7a->dpm.wp_pc);
return ERROR_OK;
}
+
+static const struct command_registration l2_cache_commands[] = {
+ {
+ .name = "l2x",
+ .handler = handle_cache_l2x,
+ .mode = COMMAND_EXEC,
+ .help = "configure l2x cache "
+ "",
+ .usage = "[base_addr] [number_of_way]",
+ },
+ COMMAND_REGISTRATION_DONE
+
+};
+
+const struct command_registration l2x_cache_command_handlers[] = {
+ {
+ .name = "cache_config",
+ .mode = COMMAND_EXEC,
+ .help = "cache configuration for a target",
+ .usage = "",
+ .chain = l2_cache_commands,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+
+const struct command_registration armv7a_command_handlers[] = {
+ {
+ .chain = dap_command_handlers,
+ },
+ {
+ .chain = l2x_cache_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
Code Review / openocd.git / blobdiff