struct mips_ejtag *ejtag_info;
};
-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,
return ERROR_OK;
}
+static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
+{
+ 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_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, 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 */
+ };
+
+ return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, buf, 1);
+}
+
int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
{
if (count == 1 && size == 4)
return retval;
}
-static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf)
-{
- 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_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, 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 */
- };
-
- return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, buf, 1);
-}
-
int mips32_cp0_read(struct mips_ejtag *ejtag_info, uint32_t *val, uint32_t cp0_reg, uint32_t cp0_sel)
{
/**
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)
-{
- 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 */
- };
-
- /* 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;
-}
-
int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
static const uint32_t code[] = {
/* 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;
}
projects / fw / openocd / commitdiff