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-rw-r--r--src/target/arm926ejs.c845
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diff --git a/src/target/arm926ejs.c b/src/target/arm926ejs.c
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+/***************************************************************************
+ * Copyright (C) 2007 by Dominic Rath *
+ * Dominic.Rath@gmx.de *
+ * *
+ * 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 *
+ * (at your option) any later version. *
+ * *
+ * This program is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * 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. *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "arm926ejs.h"
+#include "jtag.h"
+#include "log.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#if 0
+#define _DEBUG_INSTRUCTION_EXECUTION_
+#endif
+
+/* cli handling */
+int arm926ejs_register_commands(struct command_context_s *cmd_ctx);
+
+int arm926ejs_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_cp15i_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_virt2phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_md_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_mw_phys_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+int arm926ejs_handle_read_cache_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+int arm926ejs_handle_read_mmu_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+
+/* forward declarations */
+int arm926ejs_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
+int arm926ejs_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
+int arm926ejs_quit();
+int arm926ejs_arch_state(struct target_s *target, char *buf, int buf_size);
+int arm926ejs_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
+int arm926ejs_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
+int arm926ejs_soft_reset_halt(struct target_s *target);
+
+#define ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm) ((opcode_1 << 11) | (opcode_2 << 8) | (CRn << 4) | (CRm << 0))
+
+target_type_t arm926ejs_target =
+{
+ .name = "arm926ejs",
+
+ .poll = arm7_9_poll,
+ .arch_state = arm926ejs_arch_state,
+
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = arm7_9_assert_reset,
+ .deassert_reset = arm7_9_deassert_reset,
+ .soft_reset_halt = arm926ejs_soft_reset_halt,
+
+ .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+
+ .read_memory = arm7_9_read_memory,
+ .write_memory = arm926ejs_write_memory,
+ .bulk_write_memory = arm7_9_bulk_write_memory,
+
+ .run_algorithm = armv4_5_run_algorithm,
+
+ .add_breakpoint = arm7_9_add_breakpoint,
+ .remove_breakpoint = arm7_9_remove_breakpoint,
+ .add_watchpoint = arm7_9_add_watchpoint,
+ .remove_watchpoint = arm7_9_remove_watchpoint,
+
+ .register_commands = arm926ejs_register_commands,
+ .target_command = arm926ejs_target_command,
+ .init_target = arm926ejs_init_target,
+ .quit = arm926ejs_quit
+};
+
+int arm926ejs_read_cp15(target_t *target, u32 address, u32 *value)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ scan_field_t fields[4];
+ u8 address_buf[2];
+ u8 nr_w_buf = 0;
+ u8 access = 1;
+
+ buf_set_u32(address_buf, 0, 14, address);
+
+ jtag_add_end_state(TAP_RTI);
+ arm_jtag_scann(jtag_info, 0xf);
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = NULL;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 1;
+ fields[1].out_value = &access;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = &access;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = jtag_info->chain_pos;
+ fields[2].num_bits = 14;
+ fields[2].out_value = address_buf;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ fields[3].device = jtag_info->chain_pos;
+ fields[3].num_bits = 1;
+ fields[3].out_value = &nr_w_buf;
+ fields[3].out_mask = NULL;
+ fields[3].in_value = NULL;
+ fields[3].in_check_value = NULL;
+ fields[3].in_check_mask = NULL;
+ fields[3].in_handler = NULL;
+ fields[3].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(4, fields, -1);
+
+ /* rescan with NOP, to wait for the access to complete */
+ access = 0;
+
+ fields[0].in_handler_priv = value;
+ fields[0].in_handler = arm_jtag_buf_to_u32;
+
+ do
+ {
+ jtag_add_dr_scan(4, fields, -1);
+ jtag_execute_queue();
+ } while ((access & 1) != 1);
+
+#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+ DEBUG("addr: 0x%x value: %8.8x", address, *value);
+#endif
+
+ return ERROR_OK;
+}
+
+int arm926ejs_write_cp15(target_t *target, u32 address, u32 value)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ scan_field_t fields[4];
+ u8 value_buf[4];
+ u8 address_buf[2];
+ u8 nr_w_buf = 1;
+ u8 access = 1;
+
+ buf_set_u32(address_buf, 0, 14, address);
+ buf_set_u32(value_buf, 0, 32, value);
+
+ jtag_add_end_state(TAP_RTI);
+ arm_jtag_scann(jtag_info, 0xf);
+ arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
+
+ fields[0].device = jtag_info->chain_pos;
+ fields[0].num_bits = 32;
+ fields[0].out_value = value_buf;
+ fields[0].out_mask = NULL;
+ fields[0].in_value = NULL;
+ fields[0].in_check_value = NULL;
+ fields[0].in_check_mask = NULL;
+ fields[0].in_handler = NULL;
+ fields[0].in_handler_priv = NULL;
+
+ fields[1].device = jtag_info->chain_pos;
+ fields[1].num_bits = 1;
+ fields[1].out_value = &access;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = &access;
+ fields[1].in_check_value = NULL;
+ fields[1].in_check_mask = NULL;
+ fields[1].in_handler = NULL;
+ fields[1].in_handler_priv = NULL;
+
+ fields[2].device = jtag_info->chain_pos;
+ fields[2].num_bits = 14;
+ fields[2].out_value = address_buf;
+ fields[2].out_mask = NULL;
+ fields[2].in_value = NULL;
+ fields[2].in_check_value = NULL;
+ fields[2].in_check_mask = NULL;
+ fields[2].in_handler = NULL;
+ fields[2].in_handler_priv = NULL;
+
+ fields[3].device = jtag_info->chain_pos;
+ fields[3].num_bits = 1;
+ fields[3].out_value = &nr_w_buf;
+ fields[3].out_mask = NULL;
+ fields[3].in_value = NULL;
+ fields[3].in_check_value = NULL;
+ fields[3].in_check_mask = NULL;
+ fields[3].in_handler = NULL;
+ fields[3].in_handler_priv = NULL;
+
+ jtag_add_dr_scan(4, fields, -1);
+
+ /* rescan with NOP, to wait for the access to complete */
+ access = 0;
+
+ do
+ {
+ jtag_add_dr_scan(4, fields, -1);
+ jtag_execute_queue();
+ } while (access != 1);
+
+#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+ DEBUG("addr: 0x%x value: %8.8x", address, value);
+#endif
+
+ return ERROR_OK;
+}
+
+int arm926ejs_examine_debug_reason(target_t *target)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
+ int debug_reason;
+ int retval;
+
+ embeddedice_read_reg(dbg_stat);
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ return retval;
+
+ debug_reason = buf_get_u32(dbg_stat->value, 6, 4);
+
+ switch (debug_reason)
+ {
+ case 1:
+ DEBUG("breakpoint from EICE unit 0");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ break;
+ case 2:
+ DEBUG("breakpoint from EICE unit 1");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ break;
+ case 3:
+ DEBUG("soft breakpoint (BKPT instruction)");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ break;
+ case 4:
+ DEBUG("vector catch breakpoint");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ break;
+ case 5:
+ DEBUG("external breakpoint");
+ target->debug_reason = DBG_REASON_BREAKPOINT;
+ break;
+ case 6:
+ DEBUG("watchpoint from EICE unit 0");
+ target->debug_reason = DBG_REASON_WATCHPOINT;
+ break;
+ case 7:
+ DEBUG("watchpoint from EICE unit 1");
+ target->debug_reason = DBG_REASON_WATCHPOINT;
+ break;
+ case 8:
+ DEBUG("external watchpoint");
+ target->debug_reason = DBG_REASON_WATCHPOINT;
+ break;
+ case 9:
+ DEBUG("internal debug request");
+ target->debug_reason = DBG_REASON_DBGRQ;
+ break;
+ case 10:
+ DEBUG("external debug request");
+ target->debug_reason = DBG_REASON_DBGRQ;
+ break;
+ case 11:
+ ERROR("BUG: debug re-entry from system speed access shouldn't be handled here");
+ break;
+ default:
+ ERROR("BUG: unknown debug reason: 0x%x", debug_reason);
+ target->debug_reason = DBG_REASON_DBGRQ;
+ }
+
+ return ERROR_OK;
+}
+
+u32 arm926ejs_get_ttb(target_t *target)
+{
+ int retval;
+ u32 ttb = 0x0;
+
+ if ((retval = arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 2, 0), &ttb)) != ERROR_OK)
+ return retval;
+
+ return ttb;
+}
+
+void arm926ejs_disable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
+{
+ u32 cp15_control;
+
+ /* read cp15 control register */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &cp15_control);
+ jtag_execute_queue();
+
+ if (mmu)
+ {
+ /* invalidate TLB */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 8, 7), 0x0);
+
+ cp15_control &= ~0x1U;
+ }
+
+ if (d_u_cache)
+ {
+ u32 debug_override;
+ /* read-modify-write CP15 debug override register
+ * to enable "test and clean all" */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), &debug_override);
+ debug_override |= 0x80000;
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), debug_override);
+
+ /* clean and invalidate DCache */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), 0x0);
+
+ /* write CP15 debug override register
+ * to disable "test and clean all" */
+ debug_override &= ~0x80000;
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 15, 0), debug_override);
+
+ cp15_control &= ~0x4U;
+ }
+
+ if (i_cache)
+ {
+ /* invalidate ICache */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), 0x0);
+
+ cp15_control &= ~0x1000U;
+ }
+
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), cp15_control);
+}
+
+void arm926ejs_enable_mmu_caches(target_t *target, int mmu, int d_u_cache, int i_cache)
+{
+ u32 cp15_control;
+
+ /* read cp15 control register */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &cp15_control);
+ jtag_execute_queue();
+
+ if (mmu)
+ cp15_control |= 0x1U;
+
+ if (d_u_cache)
+ cp15_control |= 0x4U;
+
+ if (i_cache)
+ cp15_control |= 0x1000U;
+
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), cp15_control);
+}
+
+void arm926ejs_post_debug_entry(target_t *target)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
+ arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
+
+ /* examine cp15 control reg */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 1, 0), &arm926ejs->cp15_control_reg);
+ jtag_execute_queue();
+ DEBUG("cp15_control_reg: %8.8x", arm926ejs->cp15_control_reg);
+
+ if (arm926ejs->armv4_5_mmu.armv4_5_cache.ctype == -1)
+ {
+ u32 cache_type_reg;
+ /* identify caches */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 0, 0), &cache_type_reg);
+ jtag_execute_queue();
+ armv4_5_identify_cache(cache_type_reg, &arm926ejs->armv4_5_mmu.armv4_5_cache);
+ }
+
+ arm926ejs->armv4_5_mmu.mmu_enabled = (arm926ejs->cp15_control_reg & 0x1U) ? 1 : 0;
+ arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = (arm926ejs->cp15_control_reg & 0x4U) ? 1 : 0;
+ arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled = (arm926ejs->cp15_control_reg & 0x1000U) ? 1 : 0;
+
+ /* save i/d fault status and address register */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 5, 0), &arm926ejs->d_fsr);
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 5, 0), &arm926ejs->i_fsr);
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 6, 0), &arm926ejs->d_far);
+
+ DEBUG("D FSR: 0x%8.8x, D FAR: 0x%8.8x, I FSR: 0x%8.8x",
+ arm926ejs->d_fsr, arm926ejs->d_far, arm926ejs->i_fsr);
+
+
+ u32 cache_dbg_ctrl;
+
+ /* read-modify-write CP15 cache debug control register
+ * to disable I/D-cache linefills and force WT */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), &cache_dbg_ctrl);
+ cache_dbg_ctrl |= 0x7;
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), cache_dbg_ctrl);
+
+}
+
+void arm926ejs_pre_restore_context(target_t *target)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
+ arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
+
+ /* restore i/d fault status and address register */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 5, 0), arm926ejs->d_fsr);
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 5, 0), arm926ejs->i_fsr);
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 6, 0), arm926ejs->d_far);
+
+ u32 cache_dbg_ctrl;
+
+ /* read-modify-write CP15 cache debug control register
+ * to reenable I/D-cache linefills and disable WT */
+ arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), &cache_dbg_ctrl);
+ cache_dbg_ctrl |= 0x7;
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(7, 0, 15, 0), cache_dbg_ctrl);
+}
+
+int arm926ejs_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p, arm9tdmi_common_t **arm9tdmi_p, arm926ejs_common_t **arm926ejs_p)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+
+ if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ arm7_9 = armv4_5->arch_info;
+ if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ arm9tdmi = arm7_9->arch_info;
+ if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ arm926ejs = arm9tdmi->arch_info;
+ if (arm926ejs->common_magic != ARM926EJS_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ *armv4_5_p = armv4_5;
+ *arm7_9_p = arm7_9;
+ *arm9tdmi_p = arm9tdmi;
+ *arm926ejs_p = arm926ejs;
+
+ return ERROR_OK;
+}
+
+int arm926ejs_arch_state(struct target_s *target, char *buf, int buf_size)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
+ arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
+
+ char *state[] =
+ {
+ "disabled", "enabled"
+ };
+
+ if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
+ {
+ ERROR("BUG: called for a non-ARMv4/5 target");
+ exit(-1);
+ }
+
+ snprintf(buf, buf_size,
+ "target halted in %s state due to %s, current mode: %s\n"
+ "cpsr: 0x%8.8x pc: 0x%8.8x\n"
+ "MMU: %s, D-Cache: %s, I-Cache: %s",
+ armv4_5_state_strings[armv4_5->core_state],
+ target_debug_reason_strings[target->debug_reason],
+ armv4_5_mode_strings[armv4_5_mode_to_number(armv4_5->core_mode)],
+ buf_get_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 32),
+ buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32),
+ state[arm926ejs->armv4_5_mmu.mmu_enabled],
+ state[arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled],
+ state[arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled]);
+
+ return ERROR_OK;
+}
+
+int arm926ejs_soft_reset_halt(struct target_s *target)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
+ arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
+ reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT];
+
+ if (target->state == TARGET_RUNNING)
+ {
+ target->type->halt(target);
+ }
+
+ while (buf_get_u32(dbg_stat->value, EICE_DBG_CONTROL_DBGACK, 1) == 0)
+ {
+ embeddedice_read_reg(dbg_stat);
+ jtag_execute_queue();
+ }
+
+ target->state = TARGET_HALTED;
+
+ /* SVC, ARM state, IRQ and FIQ disabled */
+ buf_set_u32(armv4_5->core_cache->reg_list[ARMV4_5_CPSR].value, 0, 8, 0xd3);
+ armv4_5->core_cache->reg_list[ARMV4_5_CPSR].dirty = 1;
+ armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
+
+ /* start fetching from 0x0 */
+ buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, 0x0);
+ armv4_5->core_cache->reg_list[15].dirty = 1;
+ armv4_5->core_cache->reg_list[15].valid = 1;
+
+ armv4_5->core_mode = ARMV4_5_MODE_SVC;
+ armv4_5->core_state = ARMV4_5_STATE_ARM;
+
+ arm926ejs_disable_mmu_caches(target, 1, 1, 1);
+ arm926ejs->armv4_5_mmu.mmu_enabled = 0;
+ arm926ejs->armv4_5_mmu.armv4_5_cache.d_u_cache_enabled = 0;
+ arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled = 0;
+
+ target_call_event_callbacks(target, TARGET_EVENT_HALTED);
+
+ return ERROR_OK;
+}
+
+int arm926ejs_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
+{
+ int retval;
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
+ arm926ejs_common_t *arm926ejs = arm9tdmi->arch_info;
+
+ if ((retval = arm7_9_write_memory(target, address, size, count, buffer)) != ERROR_OK)
+ return retval;
+
+ /* If ICache is enabled, we have to invalidate affected ICache lines
+ * the DCache is forced to write-through, so we don't have to clean it here
+ */
+ if (arm926ejs->armv4_5_mmu.armv4_5_cache.i_cache_enabled)
+ {
+ if (count <= 1)
+ {
+ /* invalidate ICache single entry with MVA */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 1, 7, 5), address);
+ }
+ else
+ {
+ /* invalidate ICache */
+ arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(0, 0, 7, 5), address);
+ }
+ }
+
+ return retval;
+}
+
+int arm926ejs_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+{
+ arm9tdmi_init_target(cmd_ctx, target);
+
+ return ERROR_OK;
+
+}
+
+int arm926ejs_quit()
+{
+
+ return ERROR_OK;
+}
+
+int arm926ejs_init_arch_info(target_t *target, arm926ejs_common_t *arm926ejs, int chain_pos, char *variant)
+{
+ arm9tdmi_common_t *arm9tdmi = &arm926ejs->arm9tdmi_common;
+ arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
+
+ /* initialize arm9tdmi specific info (including arm7_9 and armv4_5)
+ */
+ arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
+
+ arm9tdmi->arch_info = arm926ejs;
+ arm926ejs->common_magic = ARM926EJS_COMMON_MAGIC;
+
+ arm7_9->post_debug_entry = arm926ejs_post_debug_entry;
+ arm7_9->pre_restore_context = arm926ejs_pre_restore_context;
+
+ arm926ejs->armv4_5_mmu.armv4_5_cache.ctype = -1;
+ arm926ejs->armv4_5_mmu.get_ttb = arm926ejs_get_ttb;
+ arm926ejs->armv4_5_mmu.read_memory = arm7_9_read_memory;
+ arm926ejs->armv4_5_mmu.write_memory = arm7_9_write_memory;
+ arm926ejs->armv4_5_mmu.disable_mmu_caches = arm926ejs_disable_mmu_caches;
+ arm926ejs->armv4_5_mmu.enable_mmu_caches = arm926ejs_enable_mmu_caches;
+ arm926ejs->armv4_5_mmu.has_tiny_pages = 1;
+ arm926ejs->armv4_5_mmu.mmu_enabled = 0;
+
+ arm7_9->examine_debug_reason = arm926ejs_examine_debug_reason;
+
+ return ERROR_OK;
+}
+
+int arm926ejs_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
+{
+ int chain_pos;
+ char *variant = NULL;
+ arm926ejs_common_t *arm926ejs = malloc(sizeof(arm926ejs_common_t));
+
+ if (argc < 4)
+ {
+ ERROR("'target arm926ejs' requires at least one additional argument");
+ exit(-1);
+ }
+
+ chain_pos = strtoul(args[3], NULL, 0);
+
+ if (argc >= 5)
+ variant = args[4];
+
+ DEBUG("chain_pos: %i, variant: %s", chain_pos, variant);
+
+ arm926ejs_init_arch_info(target, arm926ejs, chain_pos, variant);
+
+ return ERROR_OK;
+}
+
+int arm926ejs_register_commands(struct command_context_s *cmd_ctx)
+{
+ int retval;
+ command_t *arm926ejs_cmd;
+
+
+ retval = arm9tdmi_register_commands(cmd_ctx);
+
+ arm926ejs_cmd = register_command(cmd_ctx, NULL, "arm926ejs", NULL, COMMAND_ANY, "arm926ejs specific commands");
+
+ register_command(cmd_ctx, arm926ejs_cmd, "cp15", arm926ejs_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <opcode_1> <opcode_2> <CRn> <CRm> [value]");
+
+ register_command(cmd_ctx, arm926ejs_cmd, "cache_info", arm926ejs_handle_cache_info_command, COMMAND_EXEC, "display information about target caches");
+ register_command(cmd_ctx, arm926ejs_cmd, "virt2phys", arm926ejs_handle_virt2phys_command, COMMAND_EXEC, "translate va to pa <va>");
+
+ register_command(cmd_ctx, arm926ejs_cmd, "mdw_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory words <physical addr> [count]");
+ register_command(cmd_ctx, arm926ejs_cmd, "mdh_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory half-words <physical addr> [count]");
+ register_command(cmd_ctx, arm926ejs_cmd, "mdb_phys", arm926ejs_handle_md_phys_command, COMMAND_EXEC, "display memory bytes <physical addr> [count]");
+
+ register_command(cmd_ctx, arm926ejs_cmd, "mww_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory word <physical addr> <value>");
+ register_command(cmd_ctx, arm926ejs_cmd, "mwh_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory half-word <physical addr> <value>");
+ register_command(cmd_ctx, arm926ejs_cmd, "mwb_phys", arm926ejs_handle_mw_phys_command, COMMAND_EXEC, "write memory byte <physical addr> <value>");
+
+ return ERROR_OK;
+}
+
+int arm926ejs_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ int retval;
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+ int opcode_1 = strtoul(args[0], NULL, 0);
+ int opcode_2 = strtoul(args[1], NULL, 0);
+ int CRn = strtoul(args[2], NULL, 0);
+ int CRm = strtoul(args[3], NULL, 0);
+
+ if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
+ return ERROR_OK;
+ }
+
+ if (target->state != TARGET_HALTED)
+ {
+ command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
+ return ERROR_OK;
+ }
+
+ if ((argc < 4) || (argc > 5))
+ {
+ command_print(cmd_ctx, "usage: arm926ejs cp15 <opcode_1> <opcode_2> <CRn> <CRm> [value]");
+ }
+
+ if (argc == 4)
+ {
+ u32 value;
+ if ((retval = arm926ejs_read_cp15(target, ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm), &value)) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "couldn't access register");
+ return ERROR_OK;
+ }
+ jtag_execute_queue();
+
+ command_print(cmd_ctx, "%i %i %i %i: %8.8x", opcode_1, opcode_2, CRn, CRm, value);
+ }
+ else
+ {
+ u32 value = strtoul(args[4], NULL, 0);
+ if ((retval = arm926ejs_write_cp15(target, ARM926EJS_CP15_ADDR(opcode_1, opcode_2, CRn, CRm), value)) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "couldn't access register");
+ return ERROR_OK;
+ }
+ command_print(cmd_ctx, "%i %i %i %i: %8.8x", opcode_1, opcode_2, CRn, CRm, value);
+ }
+
+ return ERROR_OK;
+}
+
+int arm926ejs_handle_cache_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+
+ if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
+ return ERROR_OK;
+ }
+
+ return armv4_5_handle_cache_info_command(cmd_ctx, &arm926ejs->armv4_5_mmu.armv4_5_cache);
+}
+
+int arm926ejs_handle_virt2phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+ arm_jtag_t *jtag_info;
+
+ if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
+ return ERROR_OK;
+ }
+
+ jtag_info = &arm7_9->jtag_info;
+
+ if (target->state != TARGET_HALTED)
+ {
+ command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
+ return ERROR_OK;
+ }
+
+ return armv4_5_mmu_handle_virt2phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
+}
+
+int arm926ejs_handle_md_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+ arm_jtag_t *jtag_info;
+
+ if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
+ return ERROR_OK;
+ }
+
+ jtag_info = &arm7_9->jtag_info;
+
+ if (target->state != TARGET_HALTED)
+ {
+ command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
+ return ERROR_OK;
+ }
+
+ return armv4_5_mmu_handle_md_phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
+}
+
+int arm926ejs_handle_mw_phys_command(command_context_t *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm926ejs_common_t *arm926ejs;
+ arm_jtag_t *jtag_info;
+
+ if (arm926ejs_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm926ejs) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM926EJ-S target");
+ return ERROR_OK;
+ }
+
+ jtag_info = &arm7_9->jtag_info;
+
+ if (target->state != TARGET_HALTED)
+ {
+ command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
+ return ERROR_OK;
+ }
+
+ return armv4_5_mmu_handle_mw_phys_command(cmd_ctx, cmd, args, argc, target, &arm926ejs->armv4_5_mmu);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-11 17:18:03 +0000