X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Farmv4_5.c;h=0d890b80be9532609f18e9d941ebddfadc9f646c;hp=b88cdc8c638c0c305cb034e61d0d4afeb875a7dd;hb=9a98e83b49fe3541cb0d79924b13c2d86484aee2;hpb=53d605e12c3765aeedabf2bfe0c5cc338dc95d5a
diff --git a/src/target/armv4_5.c b/src/target/armv4_5.c
index b88cdc8c63..0d890b80be 100644
--- a/src/target/armv4_5.c
+++ b/src/target/armv4_5.c
@@ -28,26 +28,14 @@
#endif
#include "armv4_5.h"
+#include "arm_jtag.h"
+#include "breakpoints.h"
#include "arm_disassembler.h"
#include "binarybuffer.h"
+#include "algorithm.h"
+#include "register.h"
-bitfield_desc_t armv4_5_psr_bitfield_desc[] =
-{
- {"M[4:0]", 5},
- {"T", 1},
- {"F", 1},
- {"I", 1},
- {"reserved", 16},
- {"J", 1},
- {"reserved", 2},
- {"Q", 1},
- {"V", 1},
- {"C", 1},
- {"Z", 1},
- {"N", 1},
-};
-
char* armv4_5_core_reg_list[] =
{
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13_usr", "lr_usr", "pc",
@@ -71,7 +59,7 @@ char * armv4_5_mode_strings_list[] =
};
/* Hack! Yuk! allow -1 index, which simplifies codepaths elsewhere in the code */
-char** armv4_5_mode_strings = armv4_5_mode_strings_list+1;
+char** armv4_5_mode_strings = armv4_5_mode_strings_list + 1;
char* armv4_5_state_strings[] =
{
@@ -80,7 +68,7 @@ char* armv4_5_state_strings[] =
int armv4_5_core_reg_arch_type = -1;
-armv4_5_core_reg_t armv4_5_core_reg_list_arch_info[] =
+struct armv4_5_core_reg armv4_5_core_reg_list_arch_info[] =
{
{0, ARMV4_5_MODE_ANY, NULL, NULL},
{1, ARMV4_5_MODE_ANY, NULL, NULL},
@@ -155,23 +143,35 @@ int armv4_5_core_reg_map[7][17] =
uint8_t armv4_5_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-reg_t armv4_5_gdb_dummy_fp_reg =
+struct reg armv4_5_gdb_dummy_fp_reg =
{
- "GDB dummy floating-point register", armv4_5_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
+ .name = "GDB dummy floating-point register",
+ .value = armv4_5_gdb_dummy_fp_value,
+ .dirty = 0,
+ .valid = 1,
+ .size = 96,
+ .arch_info = NULL,
+ .arch_type = 0,
};
uint8_t armv4_5_gdb_dummy_fps_value[] = {0, 0, 0, 0};
-reg_t armv4_5_gdb_dummy_fps_reg =
+struct reg armv4_5_gdb_dummy_fps_reg =
{
- "GDB dummy floating-point status register", armv4_5_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
+ .name = "GDB dummy floating-point status register",
+ .value = armv4_5_gdb_dummy_fps_value,
+ .dirty = 0,
+ .valid = 1,
+ .size = 32,
+ .arch_info = NULL,
+ .arch_type = 0,
};
-int armv4_5_get_core_reg(reg_t *reg)
+int armv4_5_get_core_reg(struct reg *reg)
{
int retval;
- armv4_5_core_reg_t *armv4_5 = reg->arch_info;
- target_t *target = armv4_5->target;
+ struct armv4_5_core_reg *armv4_5 = reg->arch_info;
+ struct target *target = armv4_5->target;
if (target->state != TARGET_HALTED)
{
@@ -185,11 +185,11 @@ int armv4_5_get_core_reg(reg_t *reg)
return retval;
}
-int armv4_5_set_core_reg(reg_t *reg, uint8_t *buf)
+int armv4_5_set_core_reg(struct reg *reg, uint8_t *buf)
{
- armv4_5_core_reg_t *armv4_5 = reg->arch_info;
- target_t *target = armv4_5->target;
- armv4_5_common_t *armv4_5_target = target->arch_info;
+ struct armv4_5_core_reg *armv4_5 = reg->arch_info;
+ struct target *target = armv4_5->target;
+ struct armv4_5_common_s *armv4_5_target = target_to_armv4_5(target);
uint32_t value = buf_get_u32(buf, 0, 32);
if (target->state != TARGET_HALTED)
@@ -235,9 +235,9 @@ int armv4_5_set_core_reg(reg_t *reg, uint8_t *buf)
return ERROR_OK;
}
-int armv4_5_invalidate_core_regs(target_t *target)
+int armv4_5_invalidate_core_regs(struct target *target)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
int i;
for (i = 0; i < 37; i++)
@@ -249,12 +249,12 @@ int armv4_5_invalidate_core_regs(target_t *target)
return ERROR_OK;
}
-reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5_common)
+struct reg_cache* armv4_5_build_reg_cache(struct target *target, struct arm *armv4_5_common)
{
int num_regs = 37;
- reg_cache_t *cache = malloc(sizeof(reg_cache_t));
- reg_t *reg_list = malloc(sizeof(reg_t) * num_regs);
- armv4_5_core_reg_t *arch_info = malloc(sizeof(armv4_5_core_reg_t) * num_regs);
+ struct reg_cache *cache = malloc(sizeof(struct reg_cache));
+ struct reg *reg_list = malloc(sizeof(struct reg) * num_regs);
+ struct armv4_5_core_reg *arch_info = malloc(sizeof(struct armv4_5_core_reg) * num_regs);
int i;
cache->name = "arm v4/5 registers";
@@ -278,8 +278,6 @@ reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5
reg_list[i].value = calloc(1, 4);
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
- reg_list[i].bitfield_desc = NULL;
- reg_list[i].num_bitfields = 0;
reg_list[i].arch_type = armv4_5_core_reg_arch_type;
reg_list[i].arch_info = &arch_info[i];
}
@@ -287,9 +285,9 @@ reg_cache_t* armv4_5_build_reg_cache(target_t *target, armv4_5_common_t *armv4_5
return cache;
}
-int armv4_5_arch_state(struct target_s *target)
+int armv4_5_arch_state(struct target *target)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
@@ -299,7 +297,7 @@ int armv4_5_arch_state(struct target_s *target)
LOG_USER("target halted in %s state due to %s, current mode: %s\ncpsr: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "",
armv4_5_state_strings[armv4_5->core_state],
- Jim_Nvp_value2name_simple( nvp_target_debug_reason, target->debug_reason )->name,
+ Jim_Nvp_value2name_simple(nvp_target_debug_reason, target->debug_reason)->name,
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));
@@ -307,13 +305,13 @@ int armv4_5_arch_state(struct target_s *target)
return ERROR_OK;
}
-int handle_armv4_5_reg_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_armv4_5_reg_command)
{
char output[128];
int output_len;
int mode, num;
- target_t *target = get_current_target(cmd_ctx);
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct target *target = get_current_target(cmd_ctx);
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
@@ -339,9 +337,9 @@ int handle_armv4_5_reg_command(struct command_context_s *cmd_ctx, char *cmd, cha
{
armv4_5->full_context(target);
}
- output_len += snprintf(output + output_len,
- 128 - output_len,
- "%8s: %8.8" PRIx32 " ",
+ output_len += snprintf(output + output_len,
+ 128 - output_len,
+ "%8s: %8.8" PRIx32 " ",
ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).name,
buf_get_u32(ARMV4_5_CORE_REG_MODENUM(armv4_5->core_cache, mode, num).value, 0, 32));
}
@@ -359,10 +357,10 @@ int handle_armv4_5_reg_command(struct command_context_s *cmd_ctx, char *cmd, cha
return ERROR_OK;
}
-int handle_armv4_5_core_state_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_armv4_5_core_state_command)
{
- target_t *target = get_current_target(cmd_ctx);
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct target *target = get_current_target(cmd_ctx);
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
{
@@ -387,15 +385,15 @@ int handle_armv4_5_core_state_command(struct command_context_s *cmd_ctx, char *c
return ERROR_OK;
}
-int handle_armv4_5_disassemble_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_armv4_5_disassemble_command)
{
int retval = ERROR_OK;
- target_t *target = get_current_target(cmd_ctx);
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct target *target = get_current_target(cmd_ctx);
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
uint32_t address;
- int count;
+ int count = 1;
int i;
- arm_instruction_t cur_instruction;
+ struct arm_instruction cur_instruction;
uint32_t opcode;
uint16_t thumb_opcode;
int thumb = 0;
@@ -406,19 +404,32 @@ int handle_armv4_5_disassemble_command(struct command_context_s *cmd_ctx, char *
return ERROR_OK;
}
- if (argc < 2)
- {
- command_print(cmd_ctx, "usage: armv4_5 disassemble
['thumb']");
+ 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: armv4_5 disassemble [ ['thumb']]");
return ERROR_OK;
}
- address = strtoul(args[0], NULL, 0);
- count = strtoul(args[1], NULL, 0);
-
- if (argc >= 3)
- if (strcmp(args[2], "thumb") == 0)
- thumb = 1;
-
for (i = 0; i < count; i++)
{
if (thumb)
@@ -449,29 +460,37 @@ int handle_armv4_5_disassemble_command(struct command_context_s *cmd_ctx, char *
return ERROR_OK;
}
-int armv4_5_register_commands(struct command_context_s *cmd_ctx)
+int armv4_5_register_commands(struct command_context *cmd_ctx)
{
- command_t *armv4_5_cmd;
+ struct command *armv4_5_cmd;
+
+ armv4_5_cmd = register_command(cmd_ctx, NULL, "armv4_5",
+ NULL, COMMAND_ANY,
+ "armv4/5 specific commands");
+
+ register_command(cmd_ctx, armv4_5_cmd, "reg",
+ handle_armv4_5_reg_command, COMMAND_EXEC,
+ "display ARM core registers");
+ register_command(cmd_ctx, armv4_5_cmd, "core_state",
+ handle_armv4_5_core_state_command, COMMAND_EXEC,
+ "display/change ARM core state ");
+ register_command(cmd_ctx, armv4_5_cmd, "disassemble",
+ handle_armv4_5_disassemble_command, COMMAND_EXEC,
+ "disassemble instructions [ ['thumb']]");
- armv4_5_cmd = register_command(cmd_ctx, NULL, "armv4_5", NULL, COMMAND_ANY, "armv4/5 specific commands");
-
- register_command(cmd_ctx, armv4_5_cmd, "reg", handle_armv4_5_reg_command, COMMAND_EXEC, "display ARM core registers");
- register_command(cmd_ctx, armv4_5_cmd, "core_state", handle_armv4_5_core_state_command, COMMAND_EXEC, "display/change ARM core state ");
-
- register_command(cmd_ctx, armv4_5_cmd, "disassemble", handle_armv4_5_disassemble_command, COMMAND_EXEC, "disassemble instructions ['thumb']");
return ERROR_OK;
}
-int armv4_5_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size)
+int armv4_5_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size)
{
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
int i;
if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
return ERROR_FAIL;
*reg_list_size = 26;
- *reg_list = malloc(sizeof(reg_t*) * (*reg_list_size));
+ *reg_list = malloc(sizeof(struct reg*) * (*reg_list_size));
for (i = 0; i < 16; i++)
{
@@ -490,10 +509,10 @@ int armv4_5_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list
}
/* wait for execution to complete and check exit point */
-static int armv4_5_run_algorithm_completion(struct target_s *target, uint32_t exit_point, int timeout_ms, void *arch_info)
+static int armv4_5_run_algorithm_completion(struct target *target, uint32_t exit_point, int timeout_ms, void *arch_info)
{
int retval;
- armv4_5_common_t *armv4_5 = target->arch_info;
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
if ((retval = target_wait_state(target, TARGET_HALTED, timeout_ms)) != ERROR_OK)
{
@@ -501,15 +520,18 @@ static int armv4_5_run_algorithm_completion(struct target_s *target, uint32_t ex
}
if (target->state != TARGET_HALTED)
{
- if ((retval=target_halt(target)) != ERROR_OK)
+ if ((retval = target_halt(target)) != ERROR_OK)
return retval;
- if ((retval=target_wait_state(target, TARGET_HALTED, 500)) != ERROR_OK)
+ if ((retval = target_wait_state(target, TARGET_HALTED, 500)) != ERROR_OK)
{
return retval;
}
return ERROR_TARGET_TIMEOUT;
}
- if (buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32) != exit_point)
+
+ /* fast exit: ARMv5+ code can use BKPT */
+ if (exit_point && buf_get_u32(armv4_5->core_cache->reg_list[15].value,
+ 0, 32) != exit_point)
{
LOG_WARNING("target reentered debug state, but not at the desired exit point: 0x%4.4" PRIx32 "",
buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32));
@@ -519,10 +541,10 @@ static int armv4_5_run_algorithm_completion(struct target_s *target, uint32_t ex
return ERROR_OK;
}
-int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info, int (*run_it)(struct target_s *target, uint32_t exit_point, int timeout_ms, void *arch_info))
+int armv4_5_run_algorithm_inner(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info, int (*run_it)(struct target *target, uint32_t exit_point, int timeout_ms, void *arch_info))
{
- armv4_5_common_t *armv4_5 = target->arch_info;
- armv4_5_algorithm_t *armv4_5_algorithm_info = arch_info;
+ struct armv4_5_common_s *armv4_5 = target_to_armv4_5(target);
+ struct armv4_5_algorithm *armv4_5_algorithm_info = arch_info;
enum armv4_5_state core_state = armv4_5->core_state;
enum armv4_5_mode core_mode = armv4_5->core_mode;
uint32_t context[17];
@@ -547,6 +569,13 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
if (armv4_5_mode_to_number(armv4_5->core_mode)==-1)
return ERROR_FAIL;
+ /* armv5 and later can terminate with BKPT instruction; less overhead */
+ if (!exit_point && armv4_5->is_armv4)
+ {
+ LOG_ERROR("ARMv4 target needs HW breakpoint location");
+ return ERROR_FAIL;
+ }
+
for (i = 0; i <= 16; i++)
{
if (!ARMV4_5_CORE_REG_MODE(armv4_5->core_cache, armv4_5_algorithm_info->core_mode, i).valid)
@@ -565,7 +594,7 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
for (i = 0; i < num_reg_params; i++)
{
- reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
+ struct reg *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
if (!reg)
{
LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
@@ -603,9 +632,11 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
armv4_5->core_cache->reg_list[ARMV4_5_CPSR].valid = 1;
}
- if ((retval = breakpoint_add(target, exit_point, exit_breakpoint_size, BKPT_HARD)) != ERROR_OK)
+ /* terminate using a hardware or (ARMv5+) software breakpoint */
+ if (exit_point && (retval = breakpoint_add(target, exit_point,
+ exit_breakpoint_size, BKPT_HARD)) != ERROR_OK)
{
- LOG_ERROR("can't add breakpoint to finish algorithm execution");
+ LOG_ERROR("can't add HW breakpoint to terminate algorithm");
return ERROR_TARGET_FAILURE;
}
@@ -614,9 +645,10 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
return retval;
}
int retvaltemp;
- retval=run_it(target, exit_point, timeout_ms, arch_info);
+ retval = run_it(target, exit_point, timeout_ms, arch_info);
- breakpoint_remove(target, exit_point);
+ if (exit_point)
+ breakpoint_remove(target, exit_point);
if (retval != ERROR_OK)
return retval;
@@ -635,7 +667,7 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
if (reg_params[i].direction != PARAM_OUT)
{
- reg_t *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
+ struct reg *reg = register_get_by_name(armv4_5->core_cache, reg_params[i].reg_name, 0);
if (!reg)
{
LOG_ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
@@ -674,12 +706,182 @@ int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem
return retval;
}
-int armv4_5_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info)
+int armv4_5_run_algorithm(struct target *target, int num_mem_params, struct mem_param *mem_params, int num_reg_params, struct reg_param *reg_params, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info)
{
return armv4_5_run_algorithm_inner(target, num_mem_params, mem_params, num_reg_params, reg_params, entry_point, exit_point, timeout_ms, arch_info, armv4_5_run_algorithm_completion);
}
-int armv4_5_init_arch_info(target_t *target, armv4_5_common_t *armv4_5)
+/**
+ * Runs ARM code in the target to calculate a CRC32 checksum.
+ *
+ * \todo On ARMv5+, rely on BKPT termination for reduced overhead.
+ */
+int arm_checksum_memory(struct target *target,
+ uint32_t address, uint32_t count, uint32_t *checksum)
+{
+ struct working_area *crc_algorithm;
+ struct armv4_5_algorithm armv4_5_info;
+ struct reg_param reg_params[2];
+ int retval;
+ uint32_t i;
+
+ static const uint32_t arm_crc_code[] = {
+ 0xE1A02000, /* mov r2, r0 */
+ 0xE3E00000, /* mov r0, #0xffffffff */
+ 0xE1A03001, /* mov r3, r1 */
+ 0xE3A04000, /* mov r4, #0 */
+ 0xEA00000B, /* b ncomp */
+ /* nbyte: */
+ 0xE7D21004, /* ldrb r1, [r2, r4] */
+ 0xE59F7030, /* ldr r7, CRC32XOR */
+ 0xE0200C01, /* eor r0, r0, r1, asl 24 */
+ 0xE3A05000, /* mov r5, #0 */
+ /* loop: */
+ 0xE3500000, /* cmp r0, #0 */
+ 0xE1A06080, /* mov r6, r0, asl #1 */
+ 0xE2855001, /* add r5, r5, #1 */
+ 0xE1A00006, /* mov r0, r6 */
+ 0xB0260007, /* eorlt r0, r6, r7 */
+ 0xE3550008, /* cmp r5, #8 */
+ 0x1AFFFFF8, /* bne loop */
+ 0xE2844001, /* add r4, r4, #1 */
+ /* ncomp: */
+ 0xE1540003, /* cmp r4, r3 */
+ 0x1AFFFFF1, /* bne nbyte */
+ /* end: */
+ 0xEAFFFFFE, /* b end */
+ /* CRC32XOR: */
+ 0x04C11DB7 /* .word 0x04C11DB7 */
+ };
+
+ retval = target_alloc_working_area(target,
+ sizeof(arm_crc_code), &crc_algorithm);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* convert code into a buffer in target endianness */
+ for (i = 0; i < ARRAY_SIZE(arm_crc_code); i++) {
+ retval = target_write_u32(target,
+ crc_algorithm->address + i * sizeof(uint32_t),
+ arm_crc_code[i]);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
+ armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
+ armv4_5_info.core_state = ARMV4_5_STATE_ARM;
+
+ init_reg_param(®_params[0], "r0", 32, PARAM_IN_OUT);
+ init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
+
+ buf_set_u32(reg_params[0].value, 0, 32, address);
+ buf_set_u32(reg_params[1].value, 0, 32, count);
+
+ /* 20 second timeout/megabyte */
+ int timeout = 20000 * (1 + (count / (1024 * 1024)));
+
+ retval = target_run_algorithm(target, 0, NULL, 2, reg_params,
+ crc_algorithm->address,
+ crc_algorithm->address + sizeof(arm_crc_code) - 8,
+ timeout, &armv4_5_info);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("error executing ARM crc algorithm");
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ target_free_working_area(target, crc_algorithm);
+ return retval;
+ }
+
+ *checksum = buf_get_u32(reg_params[0].value, 0, 32);
+
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+
+ target_free_working_area(target, crc_algorithm);
+
+ return ERROR_OK;
+}
+
+/**
+ * Runs ARM code in the target to check whether a memory block holds
+ * all ones. NOR flash which has been erased, and thus may be written,
+ * holds all ones.
+ *
+ * \todo On ARMv5+, rely on BKPT termination for reduced overhead.
+ */
+int arm_blank_check_memory(struct target *target,
+ uint32_t address, uint32_t count, uint32_t *blank)
+{
+ struct working_area *check_algorithm;
+ struct reg_param reg_params[3];
+ struct armv4_5_algorithm armv4_5_info;
+ int retval;
+ uint32_t i;
+
+ static const uint32_t check_code[] = {
+ /* loop: */
+ 0xe4d03001, /* ldrb r3, [r0], #1 */
+ 0xe0022003, /* and r2, r2, r3 */
+ 0xe2511001, /* subs r1, r1, #1 */
+ 0x1afffffb, /* bne loop */
+ /* end: */
+ 0xeafffffe /* b end */
+ };
+
+ /* make sure we have a working area */
+ retval = target_alloc_working_area(target,
+ sizeof(check_code), &check_algorithm);
+ if (retval != ERROR_OK)
+ return retval;
+
+ /* convert code into a buffer in target endianness */
+ for (i = 0; i < ARRAY_SIZE(check_code); i++) {
+ retval = target_write_u32(target,
+ check_algorithm->address
+ + i * sizeof(uint32_t),
+ check_code[i]);
+ if (retval != ERROR_OK)
+ return retval;
+ }
+
+ armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
+ armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
+ armv4_5_info.core_state = ARMV4_5_STATE_ARM;
+
+ init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
+ buf_set_u32(reg_params[0].value, 0, 32, address);
+
+ init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
+ buf_set_u32(reg_params[1].value, 0, 32, count);
+
+ init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
+ buf_set_u32(reg_params[2].value, 0, 32, 0xff);
+
+ retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
+ check_algorithm->address,
+ check_algorithm->address + sizeof(check_code) - 4,
+ 10000, &armv4_5_info);
+ if (retval != ERROR_OK) {
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+ target_free_working_area(target, check_algorithm);
+ return retval;
+ }
+
+ *blank = buf_get_u32(reg_params[2].value, 0, 32);
+
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+
+ target_free_working_area(target, check_algorithm);
+
+ return ERROR_OK;
+}
+
+int armv4_5_init_arch_info(struct target *target, struct arm *armv4_5)
{
target->arch_info = armv4_5;