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);
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);
- }
+ if (count == 1 && size == 4)
+ return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf);
- return ERROR_OK;
-}
+ int retval = ERROR_FAIL;
-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) */
+ uint32_t *code = NULL;
+ uint32_t *data = NULL;
- 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,
+ code = malloc((256 * 2 + 10) * sizeof(uint32_t));
+ if (code == NULL) {
+ LOG_ERROR("Out of memory");
+ goto exit;
+ }
- 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) */
+ if (size != 4) {
+ data = malloc(256 * sizeof(uint32_t));
+ if (data == NULL) {
+ LOG_ERROR("Out of memory");
+ goto exit;
+ }
+ }
- MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */
- MIPS32_ADDI(9, 9, 4), /* $1 += 4 */
- MIPS32_ADDI(11, 11, 4), /* $11 += 4 */
+ uint32_t *buf32 = buf;
+ uint16_t *buf16 = buf;
+ uint8_t *buf8 = buf;
- 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 i;
+ uint32_t upper_base_addr, last_upper_base_addr;
+ int this_round_count;
+ int code_len;
- int retval = ERROR_OK;
- int blocksize;
- int wordsread;
- uint32_t param_in[2];
+ 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);
- wordsread = 0;
+ *code_p++ = MIPS32_SW(8, PRACC_OUT_OFFSET + i * 4, 15); /* store $8 at param out */
- while (count > 0) {
- blocksize = count;
- if (count > 0x400)
- blocksize = 0x400;
+ code_len += 2;
+ addr += size;
+ }
- param_in[0] = addr;
- param_in[1] = blocksize;
+ *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);
- 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;
+ 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*sizeof(uint32_t);
- wordsread += 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;
}
+exit:
+ if (code)
+ free(code);
+ if (data)
+ free(data);
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)
-{
- 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_LHU(8, 0, 9), /* lw $8,0($9), Load $8 with the halfword @mem[$9] */
- MIPS32_SW(8, 0, 11), /* sw $8,0($11) */
-
- 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) {
- LOG_ERROR("Out of memory");
- return ERROR_FAIL;
- }
-
- 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;
- }
-
- 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) */
-
- 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 retval = ERROR_OK;
- int blocksize;
- uint32_t param_in[2];
- int bytesread = 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, count, ¶m_out[bytesread], 1);
-
- if (retval != ERROR_OK)
- return retval;
-
- count -= blocksize;
- addr += blocksize;
- bytesread += blocksize;
- }
- int i;
- for (i = 0; i < bytesread; i++)
- buf[i] = param_out[i];
-
- free(param_out);
- return retval;
-}
-
int mips32_cp0_read(struct mips_ejtag *ejtag_info, uint32_t *val, uint32_t cp0_reg, uint32_t cp0_sel)
{
/**
projects / openocd / commitdiff