#include "fileio.h"
#include "image.h"
#include "log.h"
+#include "armv4_5.h"
+#include "algorithm.h"
+#include "binarybuffer.h"
+#include "armv7m.h"
#include <string.h>
#include <unistd.h>
/* attempt auto probe */
if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
return retval;
-
- if ((retval = p->driver->erase_check(p)) != ERROR_OK)
- return retval;
command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
for (j = 0; j < p->num_sectors; j++)
{
- char *erase_state, *protect_state;
-
- if (p->sectors[j].is_erased == 0)
- erase_state = "not erased";
- else if (p->sectors[j].is_erased == 1)
- erase_state = "erased";
- else
- erase_state = "erase state unknown";
+ char *protect_state;
if (p->sectors[j].is_protected == 0)
protect_state = "not protected";
else
protect_state = "protection state unknown";
- command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
+ command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
- erase_state, protect_state);
+ protect_state);
}
*buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
if (p)
{
+ int j;
if ((retval = p->driver->erase_check(p)) == ERROR_OK)
{
command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
args[0], p->base);
}
+
+ for (j = 0; j < p->num_sectors; j++)
+ {
+ char *erase_state;
+
+ if (p->sectors[j].is_erased == 0)
+ erase_state = "not erased";
+ else if (p->sectors[j].is_erased == 1)
+ erase_state = "erased";
+ else
+ erase_state = "erase state unknown";
+
+ command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
+ j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
+ erase_state);
+ }
+
}
return ERROR_OK;
return ERROR_TARGET_NOT_HALTED;
}
+ int retval;
+ int fast_check=0;
+ working_area_t *erase_check_algorithm;
+#if 0
+ /* FIX! doesn't work yet... */
+ /*
+ char test(char *a, int len, char t)
+ {
+ int i=0;
+
+ for (i=0; i<len; i++)
+ {
+ t&=a[i];
+
+ }
+ }
+
+ $ arm-elf-gcc -c -mthumb -O3 test.c
+
+ $ arm-elf-objdump --disassemble test.o
- for (i = 0; i < bank->num_sectors; i++)
+ test.o: file format elf32-littlearm
+
+ Disassembly of section .text:
+
+ 00000000 <test>:
+ 0: b510 push {r4, lr}
+ 2: 0612 lsl r2, r2, #24
+ 4: 1c04 mov r4, r0 (add r4, r0, #0)
+ 6: 0e10 lsr r0, r2, #24
+ 8: 2200 mov r2, #0
+ a: 2900 cmp r1, #0
+ c: dd04 ble 18 <test+0x18>
+ e: 5ca3 ldrb r3, [r4, r2]
+ 10: 3201 add r2, #1
+ 12: 4018 and r0, r3
+ 14: 428a cmp r2, r1
+ 16: dbfa blt e <test+0xe>
+ 18: bd10 pop {r4, pc}
+ 1a: 46c0 nop (mov r8, r8)
+
+
+ */
+ u16 erase_check_code[] =
{
- int j;
- bank->sectors[i].is_erased = 1;
+ 0x0612,// lsl r2, r2, #24
+ 0x1c04,// mov r4, r0 (add r4, r0, #0)
+ 0x0e10,// lsr r0, r2, #24
+ 0x2200,// mov r2, #0
+ 0x2900,// cmp r1, #0
+ 0xdd04,// ble 18 <test+0x18>
+ 0x5ca3,// ldrb r3, [r4, r2]
+ 0x3201,// add r2, #1
+ 0x4018,// and r0, r3
+ 0x428a,// cmp r2, r1
+ 0xdbfa,// blt e <test+0xe>
+ 0x46c0,// nop (mov r8, r8)
+
+ };
+
+
+
+ /* make sure we have a working area */
+ if (target_alloc_working_area(target, ((sizeof(erase_check_code)+3)/4)*4, &erase_check_algorithm) != ERROR_OK)
+ {
+ erase_check_algorithm = NULL;
+ }
+
+ if (erase_check_algorithm)
+ {
+ u8 erase_check_code_buf[((sizeof(erase_check_code)+3)/4)*4];
+ LOG_DEBUG("Running fast flash erase check");
- for (j=0; j<bank->sectors[i].size; j+=buffer_size)
+ for (i = 0; i < sizeof(erase_check_code)/sizeof(*erase_check_code); i++)
+ target_buffer_set_u16(target, erase_check_code_buf + (i*2), erase_check_code[i]);
+
+ /* write algorithm code to working area */
+ if ((retval=target->type->write_memory(target, erase_check_algorithm->address, 2, sizeof(erase_check_code)/sizeof(*erase_check_code), erase_check_code_buf))==ERROR_OK)
{
- int chunk;
- int retval;
- chunk=buffer_size;
- if (chunk>(j-bank->sectors[i].size))
+ for (i = 0; i < bank->num_sectors; i++)
{
- chunk=(j-bank->sectors[i].size);
+ u32 address = bank->base + bank->sectors[i].offset;
+ u32 size = bank->sectors[i].size;
+
+ reg_param_t reg_params[3];
+ armv7m_algorithm_t arm_info;
+
+ arm_info.common_magic = ARMV7M_COMMON_MAGIC;
+ arm_info.core_mode = ARMV7M_MODE_ANY;
+ arm_info.core_state = ARMV7M_STATE_THUMB;
+
+ 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, size);
+
+ init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
+ buf_set_u32(reg_params[2].value, 0, 32, 0xff);
+
+ if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, erase_check_algorithm->address,
+ erase_check_algorithm->address + sizeof(erase_check_code) - 2, 10000, &arm_info)) != ERROR_OK)
+ break;
+
+ if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
+ bank->sectors[i].is_erased = 1;
+ else
+ bank->sectors[i].is_erased = 0;
+
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+ }
+ if (i == bank->num_sectors)
+ {
+ fast_check = 1;
}
+ }
+ target_free_working_area(target, erase_check_algorithm);
+ }
+#endif
+ if (!fast_check)
+ {
+ /* try ARM7 instead */
+
+ u32 erase_check_code[] =
+ {
+ 0xe4d03001, /* ldrb r3, [r0], #1 */
+ 0xe0022003, /* and r2, r2, r3 */
+ 0xe2511001, /* subs r1, r1, #1 */
+ 0x1afffffb, /* b -4 */
+ 0xeafffffe /* b 0 */
+ };
+
+ /* make sure we have a working area */
+ if (target_alloc_working_area(target, 20, &erase_check_algorithm) == ERROR_OK)
+ {
+ u8 erase_check_code_buf[5 * 4];
+
+ for (i = 0; i < 5; i++)
+ target_buffer_set_u32(target, erase_check_code_buf + (i*4), erase_check_code[i]);
+
+ /* write algorithm code to working area */
+ if ((retval=target->type->write_memory(target, erase_check_algorithm->address, 4, 5, erase_check_code_buf))==ERROR_OK)
+ {
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ u32 address = bank->base + bank->sectors[i].offset;
+ u32 size = bank->sectors[i].size;
- retval=target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, chunk/4, buffer);
- if (retval!=ERROR_OK)
- return retval;
-
- for (nBytes = 0; nBytes < chunk; nBytes++)
+ reg_param_t reg_params[3];
+ armv4_5_algorithm_t armv4_5_info;
+
+ 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, size);
+
+ init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
+ buf_set_u32(reg_params[2].value, 0, 32, 0xff);
+
+ if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params,
+ erase_check_algorithm->address, erase_check_algorithm->address + 0x10, 10000, &armv4_5_info)) != ERROR_OK)
+ break;
+
+ if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
+ bank->sectors[i].is_erased = 1;
+ else
+ bank->sectors[i].is_erased = 0;
+
+ destroy_reg_param(®_params[0]);
+ destroy_reg_param(®_params[1]);
+ destroy_reg_param(®_params[2]);
+ }
+ if (i == bank->num_sectors)
+ {
+ fast_check = 1;
+ }
+ }
+ target_free_working_area(target, erase_check_algorithm);
+ }
+ }
+
+
+ if (!fast_check)
+ {
+ LOG_USER("Running slow fallback erase check - add working memory");
+ for (i = 0; i < bank->num_sectors; i++)
+ {
+ int j;
+ bank->sectors[i].is_erased = 1;
+
+ for (j=0; j<bank->sectors[i].size; j+=buffer_size)
{
- if (buffer[nBytes] != 0xFF)
+ int chunk;
+ int retval;
+ chunk=buffer_size;
+ if (chunk>(j-bank->sectors[i].size))
{
- bank->sectors[i].is_erased = 0;
- break;
+ chunk=(j-bank->sectors[i].size);
+ }
+
+ retval=target->type->read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer);
+ if (retval!=ERROR_OK)
+ return retval;
+
+ for (nBytes = 0; nBytes < chunk; nBytes++)
+ {
+ if (buffer[nBytes] != 0xFF)
+ {
+ bank->sectors[i].is_erased = 0;
+ break;
+ }
}
}
}
Code Review / openocd.git / blobdiff