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-rw-r--r--src/target/arm966e.c461
1 files changed, 461 insertions, 0 deletions
diff --git a/src/target/arm966e.c b/src/target/arm966e.c
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+/***************************************************************************
+ * Copyright (C) 2005 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 "arm966e.h"
+
+#include "arm7_9_common.h"
+#include "register.h"
+#include "target.h"
+#include "armv4_5.h"
+#include "embeddedice.h"
+#include "log.h"
+#include "jtag.h"
+#include "arm_jtag.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#if 0
+#define _DEBUG_INSTRUCTION_EXECUTION_
+#endif
+
+/* cli handling */
+int arm966e_register_commands(struct command_context_s *cmd_ctx);
+
+/* forward declarations */
+int arm966e_deassert_reset(target_t *target);
+int arm966e_assert_reset(target_t *target);
+int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
+int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
+int arm966e_quit(void);
+
+target_type_t arm966e_target =
+{
+ .name = "arm966e",
+
+ .poll = arm7_9_poll,
+ .arch_state = armv4_5_arch_state,
+
+ .halt = arm7_9_halt,
+ .resume = arm7_9_resume,
+ .step = arm7_9_step,
+
+ .assert_reset = arm966e_assert_reset,
+ .deassert_reset = arm966e_deassert_reset,
+ .soft_reset_halt = arm7_9_soft_reset_halt,
+
+ .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
+
+ .read_memory = arm7_9_read_memory,
+ .write_memory = arm7_9_write_memory,
+ .bulk_write_memory = arm7_9_bulk_write_memory,
+
+ .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 = arm966e_register_commands,
+ .target_command = arm966e_target_command,
+ .init_target = arm966e_init_target,
+ .quit = arm966e_quit,
+};
+
+int arm966e_assert_reset(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;
+ arm966e_common_t *arm966e = arm9tdmi->arch_info;
+ reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
+ int retval;
+ int trst_asserted_with_srt = 0;
+
+ arm966e->monitor_mode_set = 1;
+
+ DEBUG("target->state: %s", target_state_strings[target->state]);
+
+ if (target->state == TARGET_HALTED || target->state == TARGET_UNKNOWN)
+ {
+ /* assert SRST and TRST */
+ /* system would get ouf sync if we didn't reset test-logic, too */
+ if ((retval = jtag_add_reset(1, 1)) != ERROR_OK)
+ {
+ if (retval == ERROR_JTAG_RESET_CANT_SRST)
+ {
+ WARNING("can't assert srst");
+ return retval;
+ }
+ else
+ {
+ ERROR("unknown error");
+ exit(-1);
+ }
+ }
+ jtag_add_sleep(5000);
+ if ((retval = jtag_add_reset(0, 1)) != ERROR_OK)
+ {
+ if (retval == ERROR_JTAG_RESET_WOULD_ASSERT_TRST)
+ {
+ WARNING("srst resets test logic, too");
+ retval = jtag_add_reset(1, 1);
+ trst_asserted_with_srt = 1;
+ }
+ }
+ }
+ else
+ {
+ if ((retval = jtag_add_reset(0, 1)) != ERROR_OK)
+ {
+ if (retval == ERROR_JTAG_RESET_WOULD_ASSERT_TRST)
+ {
+ WARNING("srst resets test logic, too");
+ retval = jtag_add_reset(1, 1);
+ trst_asserted_with_srt = 1;
+ }
+
+ if (retval == ERROR_JTAG_RESET_CANT_SRST)
+ {
+ WARNING("can't assert srst");
+ return retval;
+ }
+ else if (retval != ERROR_OK)
+ {
+ ERROR("unknown error");
+ exit(-1);
+ }
+ }
+ }
+
+ target->state = TARGET_RESET;
+ jtag_add_sleep(50000);
+
+ armv4_5_invalidate_core_regs(target);
+
+ if( trst_asserted_with_srt == 0 )
+ {
+ DEBUG("monitor mode needs clearing");
+
+ /* arm9e monitor mode enabled at reset */
+ embeddedice_read_reg(dbg_ctrl);
+ jtag_execute_queue();
+
+ if(buf_get_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1))
+ {
+ buf_set_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1, 0);
+ embeddedice_store_reg(dbg_ctrl);
+ DEBUG("monitor mode disabled");
+ }
+ arm966e->monitor_mode_set = 0;
+ }
+
+ return ERROR_OK;
+}
+
+int arm966e_deassert_reset(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;
+ arm966e_common_t *arm966e = arm9tdmi->arch_info;
+ reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
+
+ arm7_9_deassert_reset( target );
+
+ if( arm966e->monitor_mode_set == 1 )
+ {
+ DEBUG("monitor mode needs clearing");
+
+ /* arm9e monitor mode enabled at reset */
+ embeddedice_read_reg(dbg_ctrl);
+ jtag_execute_queue();
+
+ if(buf_get_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1))
+ {
+ buf_set_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1, 0);
+ embeddedice_store_reg(dbg_ctrl);
+ arm966e->monitor_mode_set = 0;
+ DEBUG("monitor mode disabled");
+ }
+ }
+
+ return ERROR_OK;
+}
+
+int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
+{
+ arm9tdmi_init_target(cmd_ctx, target);
+
+ return ERROR_OK;
+}
+
+int arm966e_quit(void)
+{
+
+ return ERROR_OK;
+}
+
+int arm966e_init_arch_info(target_t *target, arm966e_common_t *arm966e, int chain_pos, char *variant)
+{
+ arm9tdmi_common_t *arm9tdmi = &arm966e->arm9tdmi_common;
+
+ arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
+
+ arm9tdmi->arch_info = arm966e;
+ arm966e->common_magic = ARM966E_COMMON_MAGIC;
+
+ arm9tdmi->has_single_step = 0;
+ arm9tdmi->has_monitor_mode = 1;
+
+ return ERROR_OK;
+}
+
+int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
+{
+ int chain_pos;
+ char *variant = NULL;
+ arm966e_common_t *arm966e = malloc(sizeof(arm966e_common_t));
+
+ if (argc < 4)
+ {
+ ERROR("'target arm966e' 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);
+
+ arm966e_init_arch_info(target, arm966e, chain_pos, variant);
+
+ return ERROR_OK;
+}
+
+int arm966e_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, arm966e_common_t **arm966e_p)
+{
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ arm966e_common_t *arm966e;
+
+ 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;
+ }
+
+ arm966e = arm9tdmi->arch_info;
+ if (arm966e->common_magic != ARM966E_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ *armv4_5_p = armv4_5;
+ *arm7_9_p = arm7_9;
+ *arm9tdmi_p = arm9tdmi;
+ *arm966e_p = arm966e;
+
+ return ERROR_OK;
+}
+
+int arm966e_read_cp15(target_t *target, int reg_addr, 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[3];
+ u8 reg_addr_buf = reg_addr & 0x3f;
+ u8 nr_w_buf = 0;
+
+ 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 = 6;
+ fields[1].out_value = &reg_addr_buf;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ 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 = 1;
+ fields[2].out_value = &nr_w_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;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ fields[0].in_value = (u8*)value;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ return ERROR_OK;
+}
+
+int arm966e_write_cp15(target_t *target, int reg_addr, 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[3];
+ u8 reg_addr_buf = reg_addr & 0x3f;
+ u8 nr_w_buf = 1;
+
+ 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 = (u8*)&value;
+ 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 = 6;
+ fields[1].out_value = &reg_addr_buf;
+ fields[1].out_mask = NULL;
+ fields[1].in_value = NULL;
+ 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 = 1;
+ fields[2].out_value = &nr_w_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;
+
+ jtag_add_dr_scan(3, fields, -1);
+
+ return ERROR_OK;
+}
+
+int arm966e_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;
+ arm966e_common_t *arm966e;
+ arm_jtag_t *jtag_info;
+
+ if (arm966e_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm966e) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM966e 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;
+ }
+
+ /* one or more argument, access a single register (write if second argument is given */
+ if (argc >= 1)
+ {
+ int address = strtoul(args[0], NULL, 0);
+
+ if (argc == 1)
+ {
+ u32 value;
+ if ((retval = arm966e_read_cp15(target, address, &value)) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "couldn't access reg %i", address);
+ return ERROR_OK;
+ }
+ jtag_execute_queue();
+
+ command_print(cmd_ctx, "%i: %8.8x", address, value);
+ }
+ else if (argc == 2)
+ {
+ u32 value = strtoul(args[1], NULL, 0);
+ if ((retval = arm966e_write_cp15(target, address, value)) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "couldn't access reg %i", address);
+ return ERROR_OK;
+ }
+ command_print(cmd_ctx, "%i: %8.8x", address, value);
+ }
+ }
+
+ return ERROR_OK;
+}
+
+int arm966e_register_commands(struct command_context_s *cmd_ctx)
+{
+ int retval;
+ command_t *arm966e_cmd;
+
+ retval = arm7_9_register_commands(cmd_ctx);
+ arm966e_cmd = register_command(cmd_ctx, NULL, "arm966e", NULL, COMMAND_ANY, "arm966e specific commands");
+ register_command(cmd_ctx, arm966e_cmd, "cp15", arm966e_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <num> [value]");
+
+ return ERROR_OK;
+}
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