struct mips_ejtag *ejtag_info;
};
-static int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint8_t *buf);
-static int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint16_t *buf);
-static int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint32_t *buf);
-static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info,
- uint32_t addr, uint32_t *buf);
-
-static int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint8_t *buf);
-static int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint16_t *buf);
-static int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info,
- uint32_t addr, int count, uint32_t *buf);
-static int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info,
- uint32_t addr, uint32_t *buf);
-
static int mips32_pracc_sync_cache(struct mips_ejtag *ejtag_info,
uint32_t start_addr, uint32_t end_addr);
static int mips32_pracc_clean_invalidate_cache(struct mips_ejtag *ejtag_info,
/* wait for the PrAcc to become "1" */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL);
- ejtag_ctrl = ejtag_info->ejtag_ctrl;
while (1) {
+ ejtag_ctrl = ejtag_info->ejtag_ctrl;
retval = mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
if (retval != ERROR_OK)
return retval;
uint32_t ejtag_ctrl, data;
if ((address >= MIPS32_PRACC_PARAM_IN)
- && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4)) {
+ && (address < MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4)) {
offset = (address - MIPS32_PRACC_PARAM_IN) / 4;
data = ctx->local_iparam[offset];
} else if ((address >= MIPS32_PRACC_PARAM_OUT)
- && (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4)) {
+ && (address < MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4)) {
offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
data = ctx->local_oparam[offset];
} else if ((address >= MIPS32_PRACC_TEXT)
- && (address <= MIPS32_PRACC_TEXT + ctx->code_len * 4)) {
+ && (address < MIPS32_PRACC_TEXT + ctx->code_len * 4)) {
offset = (address - MIPS32_PRACC_TEXT) / 4;
data = ctx->code[offset];
} else if (address == MIPS32_PRACC_STACK) {
+ if (ctx->stack_offset <= 0) {
+ LOG_ERROR("Error: Pracc stack out of bounds");
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
/* save to our debug stack */
data = ctx->stack[--ctx->stack_offset];
} else {
return retval;
if ((address >= MIPS32_PRACC_PARAM_IN)
- && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4)) {
+ && (address < MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4)) {
offset = (address - MIPS32_PRACC_PARAM_IN) / 4;
ctx->local_iparam[offset] = data;
} else if ((address >= MIPS32_PRACC_PARAM_OUT)
- && (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4)) {
+ && (address < MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4)) {
offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
ctx->local_oparam[offset] = data;
} else if (address == MIPS32_PRACC_STACK) {
+ if (ctx->stack_offset >= 32) {
+ LOG_ERROR("Error: Pracc stack out of bounds");
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
/* save data onto our stack */
ctx->stack[ctx->stack_offset++] = data;
} else {
int num_param_in, uint32_t *param_in, int num_param_out, uint32_t *param_out, int cycle)
{
uint32_t ejtag_ctrl;
- uint32_t address, data;
+ uint32_t address;
struct mips32_pracc_context ctx;
int retval;
int pass = 0;
if (retval != ERROR_OK)
return retval;
- address = data = 0;
+ address = 0;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS);
retval = mips_ejtag_drscan_32(ejtag_info, &address);
if (retval != ERROR_OK)
return ERROR_OK;
}
-int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
-{
- switch (size) {
- case 1:
- return mips32_pracc_read_mem8(ejtag_info, addr, count, (uint8_t *)buf);
- case 2:
- return mips32_pracc_read_mem16(ejtag_info, addr, count, (uint16_t *)buf);
- case 4:
- if (count == 1)
- return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf);
- else
- return mips32_pracc_read_mem32(ejtag_info, addr, count, (uint32_t *)buf);
- }
-
- return ERROR_OK;
-}
-
-static int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
-
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* $9 = mem[$8]; read addr */
- MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */
- MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- /* loop: */
- MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */
- MIPS32_NOP,
-
- MIPS32_LW(8, 0, 9), /* lw $8,0($9), Load $8 with the word @mem[$9] */
- MIPS32_SW(8, 0, 11), /* sw $8,0($11) */
-
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 4), /* $1 += 4 */
- MIPS32_ADDI(11, 11, 4), /* $11 += 4 */
-
- MIPS32_B(NEG16(8)), /* b loop */
- MIPS32_NOP,
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(27)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
-
- int retval = ERROR_OK;
- int blocksize;
- int wordsread;
- uint32_t param_in[2];
-
- wordsread = 0;
-
- while (count > 0) {
- blocksize = count;
- if (count > 0x400)
- blocksize = 0x400;
-
- param_in[0] = addr;
- param_in[1] = blocksize;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, blocksize, &buf[wordsread], 1);
- if (retval != ERROR_OK)
- return retval;
-
- count -= blocksize;
- addr += blocksize*sizeof(uint32_t);
- wordsread += blocksize;
- }
-
- return retval;
-}
-
static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
-
- MIPS32_LW(8, NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), /* load R8 @ param_in[0] = address */
+ uint32_t code[] = {
+ /* start: */
+ MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
+ MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR), /* $15 = MIPS32_PRACC_BASE_ADDR */
+ MIPS32_SW(8, PRACC_STACK_OFFSET, 15), /* sw $8,PRACC_STACK_OFFSET($15) */
- MIPS32_LW(8, 0, 8), /* lw $8,0($8), Load $8 with the word @mem[$8] */
- MIPS32_SW(8, NEG16(MIPS32_PRACC_STACK - MIPS32_PRACC_PARAM_OUT), 15), /* store R8 @ param_out[0] */
+ MIPS32_LUI(8, UPPER16((addr + 0x8000))), /* load $8 with modified upper address */
+ MIPS32_LW(8, LOWER16(addr), 8), /* lw $8, LOWER16(addr)($8) */
+ MIPS32_SW(8, PRACC_OUT_OFFSET, 15), /* sw $8,PRACC_OUT_OFFSET($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(9)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
+ MIPS32_LW(8, PRACC_STACK_OFFSET, 15), /* lw $8,PRACC_STACK_OFFSET($15) */
+ MIPS32_B(NEG16(8)), /* b start */
+ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
- int retval = ERROR_OK;
- uint32_t param_in[1];
-
- param_in[0] = addr;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, 1, buf, 1);
- if (retval != ERROR_OK)
- return retval;
-
- return retval;
+ return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, buf, 1);
}
-static int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf)
+int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
+ if (count == 1 && size == 4)
+ return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf);
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* $9 = mem[$8]; read addr */
- MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */
- MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- /* loop: */
- MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */
- MIPS32_NOP,
+ int retval = ERROR_FAIL;
- MIPS32_LHU(8, 0, 9), /* lw $8,0($9), Load $8 with the halfword @mem[$9] */
- MIPS32_SW(8, 0, 11), /* sw $8,0($11) */
+ uint32_t *code = NULL;
+ uint32_t *data = NULL;
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 2), /* $9 += 2 */
- MIPS32_ADDI(11, 11, 4), /* $11 += 4 */
- MIPS32_B(NEG16(8)), /* b loop */
- MIPS32_NOP,
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(27)), /* b start */
- MIPS32_MFC0(15, 30, 0), /* move COP0 DeSave to $15 */
- };
-
- /* TODO remove array */
- uint32_t *param_out = malloc(count * sizeof(uint32_t));
- if (param_out == NULL) {
+ code = malloc((256 * 2 + 10) * sizeof(uint32_t));
+ if (code == NULL) {
LOG_ERROR("Out of memory");
- return ERROR_FAIL;
+ goto exit;
}
- int retval = ERROR_OK;
- int blocksize;
- int hwordsread = 0;
- uint32_t param_in[2];
-
- while (count > 0) {
- blocksize = count;
- if (count > 0x400)
- blocksize = 0x400;
-
- param_in[0] = addr;
- param_in[1] = blocksize;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, blocksize, ¶m_out[hwordsread], 1);
-
- if (retval != ERROR_OK)
- return retval;
-
- count -= blocksize;
- addr += blocksize*sizeof(uint16_t);
- hwordsread += blocksize;
+ if (size != 4) {
+ data = malloc(256 * sizeof(uint32_t));
+ if (data == NULL) {
+ LOG_ERROR("Out of memory");
+ goto exit;
+ }
}
- int i;
- for (i = 0; i < hwordsread; i++)
- buf[i] = param_out[i];
-
- free(param_out);
- return retval;
-}
-
-static int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
-
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* $9 = mem[$8]; read addr */
- MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */
- MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- /* loop: */
- MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */
- MIPS32_NOP,
-
- MIPS32_LBU(8, 0, 9), /* lw $8,0($9), Load t4 with the byte @mem[t1] */
- MIPS32_SW(8, 0, 11), /* sw $8,0($11) */
+ uint32_t *buf32 = buf;
+ uint16_t *buf16 = buf;
+ uint8_t *buf8 = buf;
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 1), /* $9 += 1 */
- MIPS32_ADDI(11, 11, 4), /* $11 += 4 */
- MIPS32_B(NEG16(8)), /* b loop */
- MIPS32_NOP,
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(27)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
-
- /* TODO remove array */
- uint32_t *param_out = malloc(count * sizeof(uint32_t));
- if (param_out == NULL) {
- LOG_ERROR("Out of memory");
- return ERROR_FAIL;
- }
+ int i;
+ uint32_t upper_base_addr, last_upper_base_addr;
+ int this_round_count;
+ int code_len;
- int retval = ERROR_OK;
- int blocksize;
- uint32_t param_in[2];
- int bytesread = 0;
+ while (count) {
+ this_round_count = (count > 256) ? 256 : count;
+ last_upper_base_addr = UPPER16((addr + 0x8000));
+ uint32_t *code_p = code;
+
+ *code_p++ = MIPS32_MTC0(15, 31, 0); /* save $15 in DeSave */
+ *code_p++ = MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR); /* $15 = MIPS32_PRACC_BASE_ADDR */
+ *code_p++ = MIPS32_SW(8, PRACC_STACK_OFFSET, 15); /* save $8 and $9 to pracc stack */
+ *code_p++ = MIPS32_SW(9, PRACC_STACK_OFFSET, 15);
+ *code_p++ = MIPS32_LUI(9, last_upper_base_addr); /* load the upper memory address in $9*/
+ code_len = 5;
+
+ for (i = 0; i != this_round_count; i++) { /* Main code loop */
+ upper_base_addr = UPPER16((addr + 0x8000));
+ if (last_upper_base_addr != upper_base_addr) {
+ *code_p++ = MIPS32_LUI(9, upper_base_addr); /* if needed, change upper address in $9*/
+ code_len++;
+ last_upper_base_addr = upper_base_addr;
+ }
+
+ if (size == 4)
+ *code_p++ = MIPS32_LW(8, LOWER16(addr), 9); /* load from memory to $8 */
+ else if (size == 2)
+ *code_p++ = MIPS32_LHU(8, LOWER16(addr), 9);
+ else
+ *code_p++ = MIPS32_LBU(8, LOWER16(addr), 9);
- while (count > 0) {
- blocksize = count;
- if (count > 0x400)
- blocksize = 0x400;
+ *code_p++ = MIPS32_SW(8, PRACC_OUT_OFFSET + i * 4, 15); /* store $8 at param out */
- param_in[0] = addr;
- param_in[1] = blocksize;
+ code_len += 2;
+ addr += size;
+ }
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, count, ¶m_out[bytesread], 1);
+ *code_p++ = MIPS32_LW(9, PRACC_STACK_OFFSET, 15); /* restore $8 and $9 from pracc stack */
+ *code_p++ = MIPS32_LW(8, PRACC_STACK_OFFSET, 15);
- if (retval != ERROR_OK)
- return retval;
+ code_len += 4;
+ *code_p++ = MIPS32_B(NEG16(code_len - 1)); /* jump to start */
+ *code_p = MIPS32_MFC0(15, 31, 0); /* restore $15 from DeSave */
- count -= blocksize;
- addr += blocksize;
- bytesread += blocksize;
+ if (size == 4) {
+ retval = mips32_pracc_exec(ejtag_info, code_len, code, 0, NULL, this_round_count, buf32, 1);
+ if (retval != ERROR_OK)
+ goto exit;
+ buf32 += this_round_count;
+ } else {
+ retval = mips32_pracc_exec(ejtag_info, code_len, code, 0, NULL, this_round_count, data, 1);
+ if (retval != ERROR_OK)
+ goto exit;
+ uint32_t *data_p = data;
+ for (i = 0; i != this_round_count; i++) {
+ if (size == 2)
+ *buf16++ = *data_p++;
+ else
+ *buf8++ = *data_p++;
+ }
+ }
+ count -= this_round_count;
}
- int i;
- for (i = 0; i < bytesread; i++)
- buf[i] = param_out[i];
- free(param_out);
+exit:
+ if (code)
+ free(code);
+ if (data)
+ free(data);
return retval;
}
{
/**
* Do not make this code static, but regenerate it every time,
- * as 5th element has to be changed to add parameters
+ * as 3th element has to be changed to add parameters
*/
uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
-
- /* 5 */ MIPS32_MFC0(8, 0, 0), /* move COP0 [cp0_reg select] to $8 */
+ /* start: */
+ MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
+ MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR), /* $15 = MIPS32_PRACC_BASE_ADDR */
+ MIPS32_SW(8, PRACC_STACK_OFFSET, 15), /* sw $8,PRACC_STACK_OFFSET($15) */
- MIPS32_LUI(9, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(9, 9, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- MIPS32_SW(8, 0, 9), /* sw $8,0($9) */
+ /* 3 */ MIPS32_MFC0(8, 0, 0), /* move COP0 [cp0_reg select] to $8 */
+ MIPS32_SW(8, PRACC_OUT_OFFSET, 15), /* sw $8,PRACC_OUT_OFFSET($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(12)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
+ MIPS32_LW(8, PRACC_STACK_OFFSET, 15), /* lw $8,PRACC_STACK_OFFSET($15) */
+ MIPS32_B(NEG16(7)), /* b start */
+ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
/**
* MIPS32_MTC0 is implemented via MIPS32_R_INST macro.
* In order to insert our parameters, we must change rd and funct fields.
*/
- code[5] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct of MIPS32_R_INST macro */
-
- /* TODO remove array */
- uint32_t *param_out = val;
- int retval;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, param_out, 1);
+ code[3] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct of MIPS32_R_INST macro */
- return retval;
+ return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, val, 1);
}
-int mips32_cp0_write(struct mips_ejtag *ejtag_info,
- uint32_t val, uint32_t cp0_reg, uint32_t cp0_sel)
+int mips32_cp0_write(struct mips_ejtag *ejtag_info, uint32_t val, uint32_t cp0_reg, uint32_t cp0_sel)
{
uint32_t code[] = {
/* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
-
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* Load write val to $9 */
+ MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
+ MIPS32_LUI(15, UPPER16(val)), /* Load val to $15 */
+ MIPS32_ORI(15, 15, LOWER16(val)),
- /* 8 */ MIPS32_MTC0(9, 0, 0), /* move $9 to COP0 [cp0_reg select] */
+ /* 3 */ MIPS32_MTC0(15, 0, 0), /* move $15 to COP0 [cp0_reg select] */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(12)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
+ MIPS32_B(NEG16(5)), /* b start */
+ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
/**
* Note that MIPS32_MTC0 macro is implemented via MIPS32_R_INST macro.
* In order to insert our parameters, we must change rd and funct fields.
*/
- code[8] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct fields of MIPS32_R_INST macro */
-
- /* TODO remove array */
- uint32_t *param_in = malloc(1 * sizeof(uint32_t));
- int retval;
- param_in[0] = val;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 1, param_in, 0, NULL, 1);
+ code[3] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct fields of MIPS32_R_INST macro */
- free(param_in);
-
- return retval;
+ return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 0, NULL, 1);
}
/**
return retval;
}
-
-int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
+static int mips32_pracc_write_mem_generic(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
{
- int retval;
+ uint32_t *code;
+ code = malloc((128 * 3 + 9) * sizeof(uint32_t)); /* alloc memory for the worst case */
+ if (code == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
- switch (size) {
- case 1:
- retval = mips32_pracc_write_mem8(ejtag_info, addr, count, (uint8_t *)buf);
- break;
- case 2:
- retval = mips32_pracc_write_mem16(ejtag_info, addr, count, (uint16_t *)buf);
- break;
- case 4:
- if (count == 1)
- retval = mips32_pracc_write_u32(ejtag_info, addr, (uint32_t *)buf);
- else
- retval = mips32_pracc_write_mem32(ejtag_info, addr, count, (uint32_t *)buf);
- break;
- default:
- retval = ERROR_FAIL;
+ uint32_t *buf32 = buf;
+ uint16_t *buf16 = buf;
+ uint8_t *buf8 = buf;
+
+ int i;
+ int retval = ERROR_FAIL;
+ uint32_t *code_p;
+ uint32_t upper_base_addr, last_upper_base_addr;
+ int this_round_count;
+ int code_len;
+
+ while (count) {
+ this_round_count = (count > 128) ? 128 : count;
+ last_upper_base_addr = UPPER16((addr + 0x8000));
+ code_p = code;
+
+ *code_p++ = MIPS32_MTC0(15, 31, 0); /* save $15 in DeSave */
+ *code_p++ = MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR); /* $15 = MIPS32_PRACC_BASE_ADDR */
+ *code_p++ = MIPS32_SW(8, PRACC_STACK_OFFSET, 15); /* save $8 to pracc stack */
+ *code_p++ = MIPS32_LUI(15, last_upper_base_addr); /* reuse $15 as memory base address */
+ code_len = 4;
+
+ for (i = 0; i != this_round_count; i++) {
+ upper_base_addr = UPPER16((addr + 0x8000));
+ if (last_upper_base_addr != upper_base_addr) {
+ *code_p++ = MIPS32_LUI(15, upper_base_addr); /* if needed, change upper address in $15*/
+ code_len++;
+ last_upper_base_addr = upper_base_addr;
+ }
+
+ if (size == 4) { /* for word write check if one half word is 0 and load it accordingly */
+ if (LOWER16(*buf32) == 0) {
+ *code_p++ = MIPS32_LUI(8, UPPER16(*buf32)); /* load only upper value */
+ code_len++;
+ } else if (UPPER16(*buf32) == 0) {
+ *code_p++ = MIPS32_ORI(8, 0, LOWER16(*buf32)); /* load only lower value */
+ code_len++;
+ } else {
+ *code_p++ = MIPS32_LUI(8, UPPER16(*buf32)); /* load upper and lower */
+ *code_p++ = MIPS32_ORI(8, 8, LOWER16(*buf32));
+ code_len += 2;
+ }
+ *code_p++ = MIPS32_SW(8, LOWER16(addr), 15); /* store word to memory */
+ code_len++;
+ buf32++;
+
+ } else if (size == 2) {
+ *code_p++ = MIPS32_ORI(8, 0, *buf16); /* load lower value */
+ *code_p++ = MIPS32_SH(8, LOWER16(addr), 15); /* store half word to memory */
+ code_len += 2;
+ buf16++;
+
+ } else {
+ *code_p++ = MIPS32_ORI(8, 0, *buf8); /* load lower value */
+ *code_p++ = MIPS32_SB(8, LOWER16(addr), 15); /* store byte to memory */
+ code_len += 2;
+ buf8++;
+ }
+
+ addr += size;
+ }
+
+ *code_p++ = MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR); /* $15 = MIPS32_PRACC_BASE_ADDR */
+ *code_p++ = MIPS32_LW(8, PRACC_STACK_OFFSET, 15); /* restore $8 from pracc stack */
+
+ code_len += 4;
+ *code_p++ = MIPS32_B(NEG16(code_len - 1)); /* jump to start */
+ *code_p = MIPS32_MFC0(15, 31, 0); /* restore $15 from DeSave */
+
+ retval = mips32_pracc_exec(ejtag_info, code_len, code, 0, NULL, 0, NULL, 1);
+ if (retval != ERROR_OK)
+ goto exit;
+
+ count -= this_round_count;
}
+exit:
+ free(code);
+ return retval;
+}
+
+int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
+{
+ int retval = mips32_pracc_write_mem_generic(ejtag_info, addr, size, count, buf);
+ if (retval != ERROR_OK)
+ return retval;
+
/**
* If we are in the cachable regoion and cache is activated,
* we must clean D$ + invalidate I$ after we did the write,
return retval;
}
-static int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
-
- MIPS32_ADDI(8, 15, NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)), /* $8= MIPS32_PRACC_PARAM_IN */
- MIPS32_LW(9, 0, 8), /* Load write addr to $9 */
- MIPS32_LW(10, 4, 8), /* Load write count to $10 */
- MIPS32_ADDI(8, 8, 8), /* $8 += 8 beginning of data */
-
- /* loop: */
- MIPS32_LW(11, 0, 8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
- MIPS32_SW(11, 0, 9), /* sw $11,0($9) */
-
- MIPS32_ADDI(9, 9, 4), /* $9 += 4 */
- MIPS32_BNE(10, 9, NEG16(4)), /* bne $10, $9, loop */
- MIPS32_ADDI(8, 8, 4), /* $8 += 4 */
-
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(21)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
-
- /* TODO remove array */
- uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
- param_in[0] = addr;
- param_in[1] = addr + (count * sizeof(uint32_t)); /* last address */
-
- memcpy(¶m_in[2], buf, count * sizeof(uint32_t));
-
- int retval;
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- count + 2, param_in, 0, NULL, 1);
-
- free(param_in);
-
- return retval;
-}
-
-static int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
-
- MIPS32_LW(8, NEG16((MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)-4), 15), /* load R8 @ param_in[1] = data */
- MIPS32_LW(9, NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), /* load R9 @ param_in[0] = address */
-
- MIPS32_SW(8, 0, 9), /* sw $8,0($9) */
-
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(11)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
-
- /* TODO remove array */
- uint32_t param_in[1 + 1];
- param_in[0] = addr;
- param_in[1] = *buf;
-
- return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, 0, NULL, 1);
-}
-
-static int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
-
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* Load write addr to $9 */
- MIPS32_LW(10, 4, 8), /* Load write count to $10 */
- MIPS32_ADDI(8, 8, 8), /* $8 += 8 */
- /* loop: */
- MIPS32_BEQ(0, 10, 8), /* beq $0, $10, end */
- MIPS32_NOP,
-
- MIPS32_LW(11, 0, 8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
- MIPS32_SH(11, 0, 9), /* sh $11,0($9) */
-
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 2), /* $9 += 2 */
- MIPS32_ADDI(8, 8, 4), /* $8 += 4 */
-
- MIPS32_B(NEG16(8)), /* b loop */
- MIPS32_NOP,
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(26)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
-
- /* TODO remove array */
- uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
- int i;
- param_in[0] = addr;
- param_in[1] = count;
-
- for (i = 0; i < count; i++)
- param_in[i + 2] = buf[i];
-
- int retval;
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- count + 2, param_in, 0, NULL, 1);
-
- free(param_in);
-
- return retval;
-}
-
-static int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf)
+int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(8, 0, 15), /* sw $8,($15) */
- MIPS32_SW(9, 0, 15), /* sw $9,($15) */
- MIPS32_SW(10, 0, 15), /* sw $10,($15) */
- MIPS32_SW(11, 0, 15), /* sw $11,($15) */
-
- MIPS32_LUI(8, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(8, 8, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(9, 0, 8), /* Load write addr to $9 */
- MIPS32_LW(10, 4, 8), /* Load write count to $10 */
- MIPS32_ADDI(8, 8, 8), /* $8 += 8 */
- /* loop: */
- MIPS32_BEQ(0, 10, 8), /* beq $0, $10, end */
- MIPS32_NOP,
-
- MIPS32_LW(11, 0, 8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
- MIPS32_SB(11, 0, 9), /* sb $11,0($9) */
-
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 1), /* $9 += 1 */
- MIPS32_ADDI(8, 8, 4), /* $8 += 4 */
-
- MIPS32_B(NEG16(8)), /* b loop */
- MIPS32_NOP,
- /* end: */
- MIPS32_LW(11, 0, 15), /* lw $11,($15) */
- MIPS32_LW(10, 0, 15), /* lw $10,($15) */
- MIPS32_LW(9, 0, 15), /* lw $9,($15) */
- MIPS32_LW(8, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(26)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
+ static const uint32_t cp0_write_code[] = {
+ MIPS32_MTC0(1, 12, 0), /* move $1 to status */
+ MIPS32_MTLO(1), /* move $1 to lo */
+ MIPS32_MTHI(1), /* move $1 to hi */
+ MIPS32_MTC0(1, 8, 0), /* move $1 to badvaddr */
+ MIPS32_MTC0(1, 13, 0), /* move $1 to cause*/
+ MIPS32_MTC0(1, 24, 0), /* move $1 to depc (pc) */
};
- /* TODO remove array */
- uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
- int retval;
- int i;
- param_in[0] = addr;
- param_in[1] = count;
-
- for (i = 0; i < count; i++)
- param_in[i + 2] = buf[i];
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- count + 2, param_in, 0, NULL, 1);
-
- free(param_in);
-
- return retval;
-}
+ uint32_t *code;
+ code = malloc((37 * 2 + 6 + 1) * sizeof(uint32_t)); /* alloc memory for the worst case */
+ if (code == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
-int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
-{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_LUI(2, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $2 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(2, 2, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(1, 1*4, 2), /* lw $1,1*4($2) */
- MIPS32_LW(15, 15*4, 2), /* lw $15,15*4($2) */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(1, 0, 15), /* sw $1,($15) */
- MIPS32_LUI(1, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $1 = MIPS32_PRACC_PARAM_IN */
- MIPS32_ORI(1, 1, LOWER16(MIPS32_PRACC_PARAM_IN)),
- MIPS32_LW(3, 3*4, 1), /* lw $3,3*4($1) */
- MIPS32_LW(4, 4*4, 1), /* lw $4,4*4($1) */
- MIPS32_LW(5, 5*4, 1), /* lw $5,5*4($1) */
- MIPS32_LW(6, 6*4, 1), /* lw $6,6*4($1) */
- MIPS32_LW(7, 7*4, 1), /* lw $7,7*4($1) */
- MIPS32_LW(8, 8*4, 1), /* lw $8,8*4($1) */
- MIPS32_LW(9, 9*4, 1), /* lw $9,9*4($1) */
- MIPS32_LW(10, 10*4, 1), /* lw $10,10*4($1) */
- MIPS32_LW(11, 11*4, 1), /* lw $11,11*4($1) */
- MIPS32_LW(12, 12*4, 1), /* lw $12,12*4($1) */
- MIPS32_LW(13, 13*4, 1), /* lw $13,13*4($1) */
- MIPS32_LW(14, 14*4, 1), /* lw $14,14*4($1) */
- MIPS32_LW(16, 16*4, 1), /* lw $16,16*4($1) */
- MIPS32_LW(17, 17*4, 1), /* lw $17,17*4($1) */
- MIPS32_LW(18, 18*4, 1), /* lw $18,18*4($1) */
- MIPS32_LW(19, 19*4, 1), /* lw $19,19*4($1) */
- MIPS32_LW(20, 20*4, 1), /* lw $20,20*4($1) */
- MIPS32_LW(21, 21*4, 1), /* lw $21,21*4($1) */
- MIPS32_LW(22, 22*4, 1), /* lw $22,22*4($1) */
- MIPS32_LW(23, 23*4, 1), /* lw $23,23*4($1) */
- MIPS32_LW(24, 24*4, 1), /* lw $24,24*4($1) */
- MIPS32_LW(25, 25*4, 1), /* lw $25,25*4($1) */
- MIPS32_LW(26, 26*4, 1), /* lw $26,26*4($1) */
- MIPS32_LW(27, 27*4, 1), /* lw $27,27*4($1) */
- MIPS32_LW(28, 28*4, 1), /* lw $28,28*4($1) */
- MIPS32_LW(29, 29*4, 1), /* lw $29,29*4($1) */
- MIPS32_LW(30, 30*4, 1), /* lw $30,30*4($1) */
- MIPS32_LW(31, 31*4, 1), /* lw $31,31*4($1) */
-
- MIPS32_LW(2, 32*4, 1), /* lw $2,32*4($1) */
- MIPS32_MTC0(2, 12, 0), /* move $2 to status */
- MIPS32_LW(2, 33*4, 1), /* lw $2,33*4($1) */
- MIPS32_MTLO(2), /* move $2 to lo */
- MIPS32_LW(2, 34*4, 1), /* lw $2,34*4($1) */
- MIPS32_MTHI(2), /* move $2 to hi */
- MIPS32_LW(2, 35*4, 1), /* lw $2,35*4($1) */
- MIPS32_MTC0(2, 8, 0), /* move $2 to badvaddr */
- MIPS32_LW(2, 36*4, 1), /* lw $2,36*4($1) */
- MIPS32_MTC0(2, 13, 0), /* move $2 to cause*/
- MIPS32_LW(2, 37*4, 1), /* lw $2,37*4($1) */
- MIPS32_MTC0(2, 24, 0), /* move $2 to depc (pc) */
-
- MIPS32_LW(2, 2*4, 1), /* lw $2,2*4($1) */
- MIPS32_LW(1, 0, 15), /* lw $1,($15) */
- MIPS32_B(NEG16(53)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
+ uint32_t *code_p = code;
+ int code_len = 0;
+ /* load registers 2 to 31 with lui an ori instructions, check if same instructions can be saved */
+ for (int i = 2; i < 32; i++) {
+ if (LOWER16((regs[i])) == 0) {
+ *code_p++ = MIPS32_LUI(i, UPPER16((regs[i]))); /* if lower half word is 0, lui instruction only */
+ code_len++;
+ } else if (UPPER16((regs[i])) == 0) {
+ *code_p++ = MIPS32_ORI(i, 0, LOWER16((regs[i]))); /* if upper half word is 0, ori with $0 only*/
+ code_len++;
+ } else {
+ *code_p++ = MIPS32_LUI(i, UPPER16((regs[i]))); /* default, load with lui and ori instructions */
+ *code_p++ = MIPS32_ORI(i, i, LOWER16((regs[i])));
+ code_len += 2;
+ }
+ }
- int retval;
+ for (int i = 0; i != 6; i++) {
+ *code_p++ = MIPS32_LUI(1, UPPER16((regs[i + 32]))); /* load CPO value in $1, with lui and ori */
+ *code_p++ = MIPS32_ORI(1, 1, LOWER16((regs[i + 32])));
+ *code_p++ = cp0_write_code[i]; /* write value from $1 to CPO register */
+ code_len += 3;
+ }
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- MIPS32NUMCOREREGS, regs, 0, NULL, 1);
+ *code_p++ = MIPS32_LUI(1, UPPER16((regs[1]))); /* load upper half word in $1 */
+ code_len += 3;
+ *code_p++ = MIPS32_B(NEG16(code_len - 1)), /* b start */
+ *code_p = MIPS32_ORI(1, 1, LOWER16((regs[1]))); /* load lower half word in $1 */
+ int retval = mips32_pracc_exec(ejtag_info, code_len, code, 0, NULL, 0, NULL, 1);
+ free(code);
return retval;
}
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
- static const uint32_t code[] = {
- /* start: */
- MIPS32_MTC0(2, 31, 0), /* move $2 to COP0 DeSave */
- MIPS32_LUI(2, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $2 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(2, 2, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- MIPS32_SW(0, 0*4, 2), /* sw $0,0*4($2) */
- MIPS32_SW(1, 1*4, 2), /* sw $1,1*4($2) */
- MIPS32_SW(15, 15*4, 2), /* sw $15,15*4($2) */
- MIPS32_MFC0(2, 31, 0), /* move COP0 DeSave to $2 */
- MIPS32_MTC0(15, 31, 0), /* move $15 to COP0 DeSave */
- MIPS32_LUI(15, UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
- MIPS32_ORI(15, 15, LOWER16(MIPS32_PRACC_STACK)),
- MIPS32_SW(1, 0, 15), /* sw $1,($15) */
- MIPS32_SW(2, 0, 15), /* sw $2,($15) */
- MIPS32_LUI(1, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $1 = MIPS32_PRACC_PARAM_OUT */
- MIPS32_ORI(1, 1, LOWER16(MIPS32_PRACC_PARAM_OUT)),
- MIPS32_SW(2, 2*4, 1), /* sw $2,2*4($1) */
- MIPS32_SW(3, 3*4, 1), /* sw $3,3*4($1) */
- MIPS32_SW(4, 4*4, 1), /* sw $4,4*4($1) */
- MIPS32_SW(5, 5*4, 1), /* sw $5,5*4($1) */
- MIPS32_SW(6, 6*4, 1), /* sw $6,6*4($1) */
- MIPS32_SW(7, 7*4, 1), /* sw $7,7*4($1) */
- MIPS32_SW(8, 8*4, 1), /* sw $8,8*4($1) */
- MIPS32_SW(9, 9*4, 1), /* sw $9,9*4($1) */
- MIPS32_SW(10, 10*4, 1), /* sw $10,10*4($1) */
- MIPS32_SW(11, 11*4, 1), /* sw $11,11*4($1) */
- MIPS32_SW(12, 12*4, 1), /* sw $12,12*4($1) */
- MIPS32_SW(13, 13*4, 1), /* sw $13,13*4($1) */
- MIPS32_SW(14, 14*4, 1), /* sw $14,14*4($1) */
- MIPS32_SW(16, 16*4, 1), /* sw $16,16*4($1) */
- MIPS32_SW(17, 17*4, 1), /* sw $17,17*4($1) */
- MIPS32_SW(18, 18*4, 1), /* sw $18,18*4($1) */
- MIPS32_SW(19, 19*4, 1), /* sw $19,19*4($1) */
- MIPS32_SW(20, 20*4, 1), /* sw $20,20*4($1) */
- MIPS32_SW(21, 21*4, 1), /* sw $21,21*4($1) */
- MIPS32_SW(22, 22*4, 1), /* sw $22,22*4($1) */
- MIPS32_SW(23, 23*4, 1), /* sw $23,23*4($1) */
- MIPS32_SW(24, 24*4, 1), /* sw $24,24*4($1) */
- MIPS32_SW(25, 25*4, 1), /* sw $25,25*4($1) */
- MIPS32_SW(26, 26*4, 1), /* sw $26,26*4($1) */
- MIPS32_SW(27, 27*4, 1), /* sw $27,27*4($1) */
- MIPS32_SW(28, 28*4, 1), /* sw $28,28*4($1) */
- MIPS32_SW(29, 29*4, 1), /* sw $29,29*4($1) */
- MIPS32_SW(30, 30*4, 1), /* sw $30,30*4($1) */
- MIPS32_SW(31, 31*4, 1), /* sw $31,31*4($1) */
-
+ static int cp0_read_code[] = {
MIPS32_MFC0(2, 12, 0), /* move status to $2 */
- MIPS32_SW(2, 32*4, 1), /* sw $2,32*4($1) */
MIPS32_MFLO(2), /* move lo to $2 */
- MIPS32_SW(2, 33*4, 1), /* sw $2,33*4($1) */
MIPS32_MFHI(2), /* move hi to $2 */
- MIPS32_SW(2, 34*4, 1), /* sw $2,34*4($1) */
MIPS32_MFC0(2, 8, 0), /* move badvaddr to $2 */
- MIPS32_SW(2, 35*4, 1), /* sw $2,35*4($1) */
MIPS32_MFC0(2, 13, 0), /* move cause to $2 */
- MIPS32_SW(2, 36*4, 1), /* sw $2,36*4($1) */
MIPS32_MFC0(2, 24, 0), /* move depc (pc) to $2 */
- MIPS32_SW(2, 37*4, 1), /* sw $2,37*4($1) */
-
- MIPS32_LW(2, 0, 15), /* lw $2,($15) */
- MIPS32_LW(1, 0, 15), /* lw $1,($15) */
- MIPS32_B(NEG16(58)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
- int retval;
+ uint32_t *code;
+ code = malloc(49 * sizeof(uint32_t));
+ if (code == NULL) {
+ LOG_ERROR("Out of memory");
+ return ERROR_FAIL;
+ }
+
+ uint32_t *code_p = code;
+
+ *code_p++ = MIPS32_MTC0(1, 31, 0), /* move $1 to COP0 DeSave */
+ *code_p++ = MIPS32_LUI(1, PRACC_UPPER_BASE_ADDR); /* $1 = MIP32_PRACC_BASE_ADDR */
+
+ for (int i = 2; i != 32; i++)
+ *code_p++ = MIPS32_SW(i, PRACC_OUT_OFFSET + (i * 4), 1); /* store GPR's 2 to 31 */
+
+ for (int i = 0; i != 6; i++) {
+ *code_p++ = cp0_read_code[i]; /* load COP0 needed registers to $2 */
+ *code_p++ = MIPS32_SW(2, PRACC_OUT_OFFSET + (i + 32) * 4, 1); /* store COP0 registers from $2 to param out */
+ }
+
+ *code_p++ = MIPS32_MFC0(2, 31, 0), /* move DeSave to $2, reg1 value */
+ *code_p++ = MIPS32_SW(2, PRACC_OUT_OFFSET + 4, 1); /* store reg1 value from $2 to param out */
+
+ *code_p++ = MIPS32_LW(2, PRACC_OUT_OFFSET + 8, 1); /* restore $2 from param out (singularity) */
+ *code_p++ = MIPS32_B(NEG16(48)); /* b start */
+ *code_p = MIPS32_MFC0(1, 31, 0); /* move COP0 DeSave to $1 */
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- 0, NULL, MIPS32NUMCOREREGS, regs, 1);
+ int retval = mips32_pracc_exec(ejtag_info, 49, code, 0, NULL, MIPS32NUMCOREREGS, regs, 1);
+ free(code);
return retval;
}
/* write program into RAM */
if (write_t != ejtag_info->fast_access_save) {
- mips32_pracc_write_mem32(ejtag_info, source->address, ARRAY_SIZE(handler_code), handler_code);
+ mips32_pracc_write_mem_generic(ejtag_info, source->address, 4, ARRAY_SIZE(handler_code), handler_code);
/* save previous operation to speed to any consecutive read/writes */
ejtag_info->fast_access_save = write_t;
}
Code Review / openocd.git / blobdiff