/***************************************************************************
* 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 *
* GNU General Public License for more details. *
* *
* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include "replacements.h"
+#include <helper/replacements.h>
#include "armv7a.h"
+#include "armv7a_mmu.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>
-bitfield_desc_t armv7a_psr_bitfield_desc[] =
-{
- {"M[4:0]", 5},
- {"T", 1},
- {"F", 1},
- {"I", 1},
- {"A", 1},
- {"E", 1},
- {"IT[7:2]", 6},
- {"GE[3:0]", 4},
- {"reserved(DNM)", 4},
- {"J", 1},
- {"IT[0:1]", 2},
- {"Q", 1},
- {"V", 1},
- {"C", 1},
- {"Z", 1},
- {"N", 1},
-};
+#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"
-};
-armv7a_core_reg_t 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] =
+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
- */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 31
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t ttbcr, ttbcr_n;
+ int ttbidx;
+ int retval;
+
+ 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;
+
+ LOG_DEBUG("ttbcr %" PRIx32, ttbcr);
+
+ ttbcr_n = ttbcr & 0x7;
+ armv7a->armv7a_mmu.ttbcr = ttbcr;
+ armv7a->armv7a_mmu.cached = 1;
+
+ for (ttbidx = 0; ttbidx < 2; ttbidx++) {
+ /* MRC p15,0,<Rt>,c2,c0,ttbidx */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, ttbidx),
+ &armv7a->armv7a_mmu.ttbr[ttbidx]);
+ if (retval != ERROR_OK)
+ goto done;
+ }
+
+ /*
+ * ARM Architecture Reference Manual (ARMv7-A and ARMv7-Redition),
+ * document # ARM DDI 0406C
+ */
+ armv7a->armv7a_mmu.ttbr_range[0] = 0xffffffff >> ttbcr_n;
+ armv7a->armv7a_mmu.ttbr_range[1] = 0xffffffff;
+ armv7a->armv7a_mmu.ttbr_mask[0] = 0xffffffff << (14 - ttbcr_n);
+ armv7a->armv7a_mmu.ttbr_mask[1] = 0xffffffff << 14;
+ armv7a->armv7a_mmu.cached = 1;
+
+ retval = armv7a_read_midr(target);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* FIXME: why this special case based on part number? */
+ if ((armv7a->partnum & 0xf) == 0) {
+ /* ARM DDI 0344H , ARM DDI 0407F */
+ armv7a->armv7a_mmu.ttbr_mask[0] = 7 << (32 - ttbcr_n);
}
-};
-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 " ttbr1_mask %" PRIx32,
+ (ttbcr_n != 0) ? "used" : "not used",
+ armv7a->armv7a_mmu.ttbr_mask[0],
+ armv7a->armv7a_mmu.ttbr_mask[1]);
-reg_t armv7a_gdb_dummy_fp_reg =
+done:
+ dpm->finish(dpm);
+ return retval;
+}
+
+/* FIXME: remove it */
+static int armv7a_l2x_cache_init(struct target *target, uint32_t base, uint32_t way)
{
- "GDB dummy floating-point register", armv7a_gdb_dummy_fp_value,
- 0, 1, 96, NULL, 0, NULL, 0
-};
+ struct armv7a_l2x_cache *l2x_cache;
+ struct target_list *head = target->head;
+ struct target *curr;
+
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ 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.outer_cache)
+ LOG_INFO("outer cache already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
+ /* 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.outer_cache)
+ LOG_ERROR("smp target : outer cache already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
+ }
+ head = head->next;
+ }
+ return JIM_OK;
+}
-void armv7a_show_fault_registers(target_t *target)
+/* FIXME: remove it */
+COMMAND_HANDLER(handle_cache_l2x)
{
- uint32_t dfsr, ifsr, dfar, ifar;
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
+ struct target *target = get_current_target(CMD_CTX);
+ uint32_t base, way;
- 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);
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- 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);
+ /* 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 ERROR_OK;
}
-int armv7a_arch_state(struct target_s *target)
+int armv7a_handle_cache_info_command(struct command_context *cmd_ctx,
+ struct armv7a_cache_common *armv7a_cache)
{
- static const char *state[] =
- {
- "disabled", "enabled"
- };
+ struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
+ (armv7a_cache->outer_cache);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- struct armv4_5_common_s *armv4_5 = &armv7a->armv4_5_common;
+ int cl;
- if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
- {
- LOG_ERROR("BUG: called for a non-ARMv4/5 target");
- exit(-1);
+ if (armv7a_cache->info == -1) {
+ command_print(cmd_ctx, "cache not yet identified");
+ return ERROR_OK;
}
- 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);
+ for (cl = 0; cl < armv7a_cache->loc; cl++) {
+ struct armv7a_arch_cache *arch = &(armv7a_cache->arch[cl]);
+
+ if (arch->ctype & 1) {
+ command_print(cmd_ctx,
+ "L%d I-Cache: linelen %" PRIi32
+ ", associativity %" PRIi32
+ ", nsets %" PRIi32
+ ", cachesize %" PRId32 " KBytes",
+ cl+1,
+ arch->i_size.linelen,
+ arch->i_size.associativity,
+ arch->i_size.nsets,
+ arch->i_size.cachesize);
+ }
+
+ if (arch->ctype >= 2) {
+ command_print(cmd_ctx,
+ "L%d D-Cache: linelen %" PRIi32
+ ", associativity %" PRIi32
+ ", nsets %" PRIi32
+ ", cachesize %" PRId32 " KBytes",
+ cl+1,
+ arch->d_u_size.linelen,
+ arch->d_u_size.associativity,
+ arch->d_u_size.nsets,
+ arch->d_u_size.cachesize);
+ }
+ }
+
+ if (l2x_cache != NULL)
+ command_print(cmd_ctx, "Outer unified cache Base Address 0x%" PRIx32 ", %" PRId32 " ways",
+ l2x_cache->base, l2x_cache->way);
return ERROR_OK;
}
-
-static int handle_dap_baseaddr_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
+/* retrieve core id cluster id */
+static int armv7a_read_mpidr(struct target *target)
{
- target_t *target = get_current_target(cmd_ctx);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- swjdp_common_t *swjdp = &armv7a->swjdp_info;
+ 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;
+ }
- return dap_baseaddr_command(cmd_ctx, swjdp, args, argc);
-}
+ 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");
-static int handle_dap_memaccess_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
-{
- target_t *target = get_current_target(cmd_ctx);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- swjdp_common_t *swjdp = &armv7a->swjdp_info;
+ } else
+ LOG_ERROR("MPIDR not in multiprocessor format");
- return dap_memaccess_command(cmd_ctx, swjdp, args, argc);
-}
+done:
+ dpm->finish(dpm);
+ return retval;
-static int handle_dap_apsel_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
-{
- target_t *target = get_current_target(cmd_ctx);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- swjdp_common_t *swjdp = &armv7a->swjdp_info;
- return dap_apsel_command(cmd_ctx, swjdp, args, argc);
}
-static int handle_dap_apid_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
+static int get_cache_info(struct arm_dpm *dpm, int cl, int ct, uint32_t *cache_reg)
{
- target_t *target = get_current_target(cmd_ctx);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- swjdp_common_t *swjdp = &armv7a->swjdp_info;
-
- return dap_apid_command(cmd_ctx, swjdp, args, argc);
+ int retval = ERROR_OK;
+
+ /* select cache level */
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MCR(15, 2, 0, 0, 0, 0),
+ (cl << 1) | (ct == 1 ? 1 : 0));
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
+ cache_reg);
+ done:
+ return retval;
}
-static int handle_dap_info_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
+static struct armv7a_cachesize decode_cache_reg(uint32_t cache_reg)
{
- target_t *target = get_current_target(cmd_ctx);
- struct armv7a_common_s *armv7a = target_to_armv7a(target);
- swjdp_common_t *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;
- }
+ struct armv7a_cachesize size;
+ int i = 0;
+
+ size.linelen = 16 << (cache_reg & 0x7);
+ size.associativity = ((cache_reg >> 3) & 0x3ff) + 1;
+ size.nsets = ((cache_reg >> 13) & 0x7fff) + 1;
+ size.cachesize = size.linelen * size.associativity * size.nsets / 1024;
+
+ /* compute info for set way operation on cache */
+ size.index_shift = (cache_reg & 0x7) + 4;
+ size.index = (cache_reg >> 13) & 0x7fff;
+ size.way = ((cache_reg >> 3) & 0x3ff);
- return dap_info_command(cmd_ctx, swjdp, apsel);
+ while (((size.way << i) & 0x80000000) == 0)
+ i++;
+ size.way_shift = i;
+
+ return size;
}
-static int
-handle_armv7a_disassemble_command(struct command_context_s *cmd_ctx,
- char *cmd, char **args, int argc)
+int armv7a_identify_cache(struct target *target)
{
- target_t *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");
- return ERROR_OK;
- }
-
- /* REVISIT: eventually support ThumbEE disassembly too;
- * some opcodes work differently.
- */
+ /* read cache descriptor */
+ int retval = ERROR_FAIL;
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ struct arm_dpm *dpm = armv7a->arm.dpm;
+ uint32_t csselr, clidr, ctr;
+ uint32_t cache_reg;
+ int cl, ctype;
+ struct armv7a_cache_common *cache =
+ &(armv7a->armv7a_mmu.armv7a_cache);
+
+ retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* retrieve CTR
+ * mrc p15, 0, r0, c0, c0, 1 @ read ctr */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 0, 0, 1),
+ &ctr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ cache->iminline = 4UL << (ctr & 0xf);
+ cache->dminline = 4UL << ((ctr & 0xf0000) >> 16);
+ LOG_DEBUG("ctr %" PRIx32 " ctr.iminline %" PRId32 " ctr.dminline %" PRId32,
+ ctr, cache->iminline, cache->dminline);
+
+ /* 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;
+
+ cache->loc = (clidr & 0x7000000) >> 24;
+ LOG_DEBUG("Number of cache levels to PoC %" PRId32, cache->loc);
+
+ /* retrieve selected cache for later restore
+ * 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),
+ &csselr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* retrieve all available inner caches */
+ for (cl = 0; cl < cache->loc; clidr >>= 3, cl++) {
+
+ /* isolate cache type at current level */
+ ctype = clidr & 7;
+
+ /* skip reserved values */
+ if (ctype > CACHE_LEVEL_HAS_UNIFIED_CACHE)
+ continue;
+
+ /* separate d or unified d/i cache at this level ? */
+ if (ctype & (CACHE_LEVEL_HAS_UNIFIED_CACHE | CACHE_LEVEL_HAS_D_CACHE)) {
+ /* retrieve d-cache info */
+ retval = get_cache_info(dpm, cl, 0, &cache_reg);
+ if (retval != ERROR_OK)
+ goto done;
+ cache->arch[cl].d_u_size = decode_cache_reg(cache_reg);
+
+ LOG_DEBUG("data/unified cache index %d << %d, way %d << %d",
+ cache->arch[cl].d_u_size.index,
+ cache->arch[cl].d_u_size.index_shift,
+ cache->arch[cl].d_u_size.way,
+ cache->arch[cl].d_u_size.way_shift);
+
+ LOG_DEBUG("cacheline %d bytes %d KBytes asso %d ways",
+ cache->arch[cl].d_u_size.linelen,
+ cache->arch[cl].d_u_size.cachesize,
+ cache->arch[cl].d_u_size.associativity);
+ }
- 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;
+ /* separate i-cache at this level ? */
+ if (ctype & CACHE_LEVEL_HAS_I_CACHE) {
+ /* retrieve i-cache info */
+ retval = get_cache_info(dpm, cl, 1, &cache_reg);
+ if (retval != ERROR_OK)
+ goto done;
+ cache->arch[cl].i_size = decode_cache_reg(cache_reg);
+
+ LOG_DEBUG("instruction cache index %d << %d, way %d << %d",
+ cache->arch[cl].i_size.index,
+ cache->arch[cl].i_size.index_shift,
+ cache->arch[cl].i_size.way,
+ cache->arch[cl].i_size.way_shift);
+
+ LOG_DEBUG("cacheline %d bytes %d KBytes asso %d ways",
+ cache->arch[cl].i_size.linelen,
+ cache->arch[cl].i_size.cachesize,
+ cache->arch[cl].i_size.associativity);
}
- break;
- default:
-usage:
- command_print(cmd_ctx,
- "usage: armv7a disassemble <address> [<count> ['thumb']]");
- return ERROR_OK;
+
+ cache->arch[cl].ctype = ctype;
}
- for (i = 0; i < count; i++) {
- arm_instruction_t cur_instruction;
- int retval;
+ /* restore selected cache */
+ dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ csselr);
- if (thumb) {
- retval = thumb2_opcode(target, address, &cur_instruction);
- if (retval != ERROR_OK)
- return retval;
+ if (retval != ERROR_OK)
+ goto done;
- address += cur_instruction.instruction_size;
- } else {
- uint32_t opcode;
+ /* 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.flush_all_data_cache =
+ armv7a_cache_auto_flush_all_data;
+ }
- retval = target_read_u32(target, address, &opcode);
- if (retval != ERROR_OK)
- return retval;
+ armv7a->armv7a_mmu.armv7a_cache.info = 1;
+done:
+ dpm->finish(dpm);
+ armv7a_read_mpidr(target);
+ 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);
+static int armv7a_setup_semihosting(struct target *target, int enable)
+{
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ uint32_t vcr;
+ int ret;
+
+ ret = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_VCR,
+ &vcr);
+ if (ret < 0) {
+ LOG_ERROR("Failed to read VCR register\n");
+ return ret;
}
+ if (enable)
+ vcr |= DBG_VCR_SVC_MASK;
+ else
+ vcr &= ~DBG_VCR_SVC_MASK;
+
+ ret = mem_ap_write_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_VCR,
+ vcr);
+ if (ret < 0)
+ LOG_ERROR("Failed to write VCR register\n");
+
+ return ret;
+}
+
+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;
+ arm->setup_semihosting = armv7a_setup_semihosting;
+ /* 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.info = -1;
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = NULL;
+ armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache = NULL;
+ armv7a->armv7a_mmu.armv7a_cache.auto_cache_enabled = 1;
return ERROR_OK;
}
-int armv7a_register_commands(struct command_context_s *cmd_ctx)
+int armv7a_arch_state(struct target *target)
{
- command_t *arm_adi_v5_dap_cmd;
- command_t *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 = l2x_cache_command_handlers,
+ },
+ {
+ .chain = arm7a_cache_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
Code Review / openocd.git / blobdiff