#include "mips32.h"
#include "mips32_pracc.h"
-#define PRACC_FETCH 0
-#define PRACC_STORE 1
-
struct mips32_pracc_context {
uint32_t *local_iparam;
int num_iparam;
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(val)), /* Load val to $15 */
- MIPS32_ORI(15, 15, LOWER16(val)),
+ struct pracc_queue_info ctx = {.max_code = 6};
+ pracc_queue_init(&ctx);
+ if (ctx.retval != ERROR_OK)
+ goto exit;
- /* 3 */ MIPS32_MTC0(15, 0, 0), /* move $15 to COP0 [cp0_reg select] */
+ pracc_add(&ctx, 0, MIPS32_MTC0(15, 31, 0)); /* move $15 to COP0 DeSave */
+ pracc_add(&ctx, 0, MIPS32_LUI(15, UPPER16(val))); /* Load val to $15 */
+ pracc_add(&ctx, 0, MIPS32_ORI(15, 15, LOWER16(val)));
- MIPS32_B(NEG16(5)), /* b start */
- MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
- };
+ pracc_add(&ctx, 0, MIPS32_MTC0(15, 0, 0) | (cp0_reg << 11) | cp0_sel); /* write cp0 reg / sel */
+
+ pracc_add(&ctx, 0, MIPS32_B(NEG16(ctx.code_count + 1))); /* jump to start */
+ pracc_add(&ctx, 0, MIPS32_MFC0(15, 31, 0)); /* move COP0 DeSave to $15 */
+
+ ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL);
+exit:
+ pracc_queue_free(&ctx);
+ return ctx.retval;
/**
* 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[3] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct fields of MIPS32_R_INST macro */
-
- return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 0, NULL, 1);
+ * code[3] |= (cp0_reg << 11) | cp0_sel; change rd and funct fields of MIPS32_R_INST macro
+ **/
}
/**
static int mips32_pracc_write_mem_generic(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
{
- 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;
- }
+ struct pracc_queue_info ctx = {.max_code = 128 * 3 + 6 + 1}; /* alloc memory for the worst case */
+ pracc_queue_init(&ctx);
+ if (ctx.retval != ERROR_OK)
+ goto exit;
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;
+ ctx.code_count = 0;
+ ctx.store_count = 0;
+ int this_round_count = (count > 128) ? 128 : count;
+ uint32_t last_upper_base_addr = UPPER16((addr + 0x8000));
- *code_p++ = MIPS32_MTC0(15, 31, 0); /* save $15 in DeSave */
- *code_p++ = MIPS32_LUI(15, last_upper_base_addr); /* load $15 with memory base address */
- code_len = 2;
+ pracc_add(&ctx, 0, MIPS32_MTC0(15, 31, 0)); /* save $15 in DeSave */
+ pracc_add(&ctx, 0, MIPS32_LUI(15, last_upper_base_addr)); /* load $15 with memory base address */
- for (i = 0; i != this_round_count; i++) {
- upper_base_addr = UPPER16((addr + 0x8000));
+ for (int i = 0; i != this_round_count; i++) {
+ uint32_t 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++;
+ pracc_add(&ctx, 0, MIPS32_LUI(15, upper_base_addr)); /* if needed, change upper address in $15*/
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;
+ if (size == 4) { /* for word writes check if one half word is 0 and load it accordingly */
+ if (LOWER16(*buf32) == 0)
+ pracc_add(&ctx, 0, MIPS32_LUI(8, UPPER16(*buf32))); /* load only upper value */
+ else if (UPPER16(*buf32) == 0)
+ pracc_add(&ctx, 0, MIPS32_ORI(8, 0, LOWER16(*buf32))); /* load only lower */
+ else {
+ pracc_add(&ctx, 0, MIPS32_LUI(8, UPPER16(*buf32))); /* load upper and lower */
+ pracc_add(&ctx, 0, MIPS32_ORI(8, 8, LOWER16(*buf32)));
}
- *code_p++ = MIPS32_SW(8, LOWER16(addr), 15); /* store word to memory */
- code_len++;
+ pracc_add(&ctx, 0, MIPS32_SW(8, LOWER16(addr), 15)); /* store word to memory */
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;
+ pracc_add(&ctx, 0, MIPS32_ORI(8, 0, *buf16)); /* load lower value */
+ pracc_add(&ctx, 0, MIPS32_SH(8, LOWER16(addr), 15)); /* store half word to memory */
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;
+ pracc_add(&ctx, 0, MIPS32_ORI(8, 0, *buf8)); /* load lower value */
+ pracc_add(&ctx, 0, MIPS32_SB(8, LOWER16(addr), 15)); /* store byte to memory */
buf8++;
}
-
addr += size;
}
- *code_p++ = MIPS32_LUI(8, UPPER16(ejtag_info->reg8)), /* restore upper 16 bits of reg 8 */
- *code_p++ = MIPS32_ORI(8, 8, LOWER16(ejtag_info->reg8)), /* restore lower 16 bits of reg 8 */
+ pracc_add(&ctx, 0, MIPS32_LUI(8, UPPER16(ejtag_info->reg8))); /* restore upper 16 bits of reg 8 */
+ pracc_add(&ctx, 0, MIPS32_ORI(8, 8, LOWER16(ejtag_info->reg8))); /* restore lower 16 bits of reg 8 */
- 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 */
+ pracc_add(&ctx, 0, MIPS32_B(NEG16(ctx.code_count + 1))); /* jump to start */
+ pracc_add(&ctx, 0, 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)
+ ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL);
+ if (ctx.retval != ERROR_OK)
goto exit;
-
count -= this_round_count;
}
-
exit:
- free(code);
- return retval;
+ pracc_queue_free(&ctx);
+ return ctx.retval;
}
int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf)
MIPS32_MTC0(1, 24, 0), /* move $1 to depc (pc) */
};
- 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;
- }
+ struct pracc_queue_info ctx = {.max_code = 37 * 2 + 6 + 1};
+ pracc_queue_init(&ctx);
+ if (ctx.retval != ERROR_OK)
+ goto exit;
- 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 */
+ /* load registers 2 to 31 with lui and ori instructions, check if some 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;
+ if (LOWER16((regs[i])) == 0) /* if lower half word is 0, lui instruction only */
+ pracc_add(&ctx, 0, MIPS32_LUI(i, UPPER16((regs[i]))));
+ else if (UPPER16((regs[i])) == 0) /* if upper half word is 0, ori with $0 only*/
+ pracc_add(&ctx, 0, MIPS32_ORI(i, 0, LOWER16((regs[i]))));
+ else { /* default, load with lui and ori instructions */
+ pracc_add(&ctx, 0, MIPS32_LUI(i, UPPER16((regs[i]))));
+ pracc_add(&ctx, 0, MIPS32_ORI(i, i, LOWER16((regs[i]))));
}
}
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;
+ pracc_add(&ctx, 0, MIPS32_LUI(1, UPPER16((regs[i + 32])))); /* load CPO value in $1, with lui and ori */
+ pracc_add(&ctx, 0, MIPS32_ORI(1, 1, LOWER16((regs[i + 32]))));
+ pracc_add(&ctx, 0, cp0_write_code[i]); /* write value from $1 to CPO register */
}
- *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 */
+ pracc_add(&ctx, 0, MIPS32_LUI(1, UPPER16((regs[1])))); /* load upper half word in $1 */
+ pracc_add(&ctx, 0, MIPS32_B(NEG16(ctx.code_count + 1))); /* jump to start */
+ pracc_add(&ctx, 0, 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);
+ ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL);
ejtag_info->reg8 = regs[8];
ejtag_info->reg9 = regs[9];
- return retval;
+exit:
+ pracc_queue_free(&ctx);
+ return ctx.retval;
}
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_FASTDATA);
mips_ejtag_fastdata_scan(ejtag_info, 1, &val);
+ unsigned num_clocks = 0; /* like in legacy code */
+ if (ejtag_info->mode != 0)
+ num_clocks = ((uint64_t)(ejtag_info->scan_delay) * jtag_get_speed_khz() + 500000) / 1000000;
+
for (i = 0; i < count; i++) {
+ jtag_add_clocks(num_clocks);
retval = mips_ejtag_fastdata_scan(ejtag_info, write_t, buf++);
if (retval != ERROR_OK)
return retval;
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