@@ -428,16 +428,11 @@ int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size
if (count == 1 && size == 4)
return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf);
int retval = ERROR_FAIL;
uint32_t *code = NULL;
uint32_t *data = NULL;
code = malloc((256 * 2 + 10) * sizeof(uint32_t));
if (code == NULL) {
LOG_ERROR("Out of memory");
struct pracc_queue_info ctx = {.max_code = 256 * 3 + 9 + 1}; /* alloc memory for the worst case */
pracc_queue_init(&ctx);
if (ctx.retval != ERROR_OK)
goto exit;
}
if (size != 4) {
data = malloc(256 * sizeof(uint32_t));
@@ -451,62 +446,54 @@ int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size
uint16_t *buf16 = buf;
uint8_t *buf8 = buf;
int i;
uint32_t upper_base_addr, last_upper_base_addr;
int this_round_count;
int code_len;
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_LUI(9, last_upper_base_addr); /* load the upper memory address in $9*/
code_len = 3;
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++;
ctx.code_count = 0;
ctx.store_count = 0;
int this_round_count = (count > 256) ? 256 : count;
uint32_t last_upper_base_addr = UPPER16((addr + 0x8000));
pracc_add(&ctx, 0, MIPS32_MTC0(15, 31, 0)); /* save $15 in DeSave */
pracc_add(&ctx, 0, MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR)); /* $15 = MIPS32_PRACC_BASE_ADDR */
pracc_add(&ctx, 0, MIPS32_LUI(9, last_upper_base_addr)); /* load the upper memory address in $9 */
for (int i = 0; i != this_round_count; i++) { /* Main code loop */
uint32_t upper_base_addr = UPPER16((addr + 0x8000));
if (last_upper_base_addr != upper_base_addr) { /* if needed, change upper address in $9 */
pracc_add(&ctx, 0, MIPS32_LUI(9, upper_base_addr));
last_upper_base_addr = upper_base_addr;
}
if (size == 4)
*code_p++ = MIPS32_LW(8, LOWER16(addr), 9 ); /* load from memory to $8 */
pracc_add(&ctx, 0, MIPS32_LW(8, LOWER16(addr), 9) ); /* load from memory to $8 */
else if (size == 2)
*code_p++ = MIPS32_LHU(8, LOWER16(addr), 9 );
pracc_add(&ctx, 0, MIPS32_LHU(8, LOWER16(addr), 9) );
else
*code_p++ = MIPS32_LBU(8, LOWER16(addr), 9);
*code_p++ = MIPS32_SW(8, PRACC_OUT_OFFSET + i * 4, 15); /* store $8 at param out */
pracc_add(&ctx, 0, MIPS32_LBU(8, LOWER16(addr), 9));
code_len += 2;
pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT + i * 4,
MIPS32_SW(8, PRACC_OUT_OFFSET + i * 4, 15)); /* store $8 at param out */
addr += size;
}
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 */
pracc_add(&ctx, 0, MIPS32_LUI(9, UPPER16(ejtag_info->reg9))); /* restore upper 16 bits of reg 9 */
pracc_add(&ctx, 0, MIPS32_ORI(9, 9, LOWER16(ejtag_info->reg9))); /* restore lower 16 bits of reg 9 */
*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 */
*code_p++ = MIPS32_LUI(9, UPPER16(ejtag_info->reg8)); /* restore upper 16 bits of reg 9 */
*code_p++ = MIPS32_ORI(9, 9, LOWER16(ejtag_info->reg8)); /* restore lower 16 bits of reg 9 */
code_len += 6;
*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 */
if (size == 4) {
retval = mips32_pracc_exec(ejtag_info, code_len, code, 0, NULL, this_round_count, buf32, 1 );
if (retval != ERROR_OK)
ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, buf32);
if (ctx.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)
ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, data );
if (ctx. retval != ERROR_OK)
goto exit;
uint32_t *data_p = data;
for (i = 0; i != this_round_count; i++) {
for (int i = 0; i != this_round_count; i++) {
if (size == 2)
*buf16++ = *data_p++;
else
@@ -515,34 +502,34 @@ int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size
}
count -= this_round_count;
}
exit:
if (code)
free(code);
if (data)
pracc_queue_free(&ctx);
if (data != NULL)
free(data);
return retval;
return ctx. retval;
}
int mips32_cp0_read(struct mips_ejtag *ejtag_info, uint32_t *val, uint32_t cp0_reg, uint32_t cp0_sel)
{
/**
* Do not make this code static, but regenerate it every time,
* as 2th 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, PRACC_UPPER_BASE_ADDR), /* $15 = MIPS32_PRACC_BASE_ADDR */
struct pracc_queue_info ctx = {.max_code = 8};
pracc_queue_init(&ctx);
if (ctx.retval != ERROR_OK)
goto exit;
/* 2 */ 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) */
pracc_add(&ctx, 0, MIPS32_MTC0(15, 31, 0)); /* move $15 to COP0 DeSave */
pracc_add(&ctx, 0, MIPS32_LUI(15, PRACC_UPPER_BASE_ADDR)); /* $15 = MIPS32_PRACC_BASE_ADDR */
pracc_add(&ctx, 0, MIPS32_MFC0(8, 0, 0) | (cp0_reg << 11) | cp0_sel); /* move COP0 [cp0_reg select] to $8 */
pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT,
MIPS32_SW(8, PRACC_OUT_OFFSET, 15)); /* store $8 to pracc_out */
pracc_add(&ctx, 0, MIPS32_MFC0(15, 31, 0)); /* move COP0 DeSave to $15 */
pracc_add(&ctx, 0, MIPS32_LUI(8, UPPER16(ejtag_info->reg8))); /* restore upper 16 bits of $8 */
pracc_add(&ctx, 0, MIPS32_B(NEG16(ctx.code_count + 1))); /* jump to start */
pracc_add(&ctx, 0, MIPS32_ORI(8, 8, LOWER16(ejtag_info->reg8))); /* restore lower 16 bits of $8 */
MIPS32_LUI(8, UPPER16(ejtag_info->reg8)), /* restore upper 16 bits of reg 8 */
MIPS32_ORI(8, 8, LOWER16(ejtag_info->reg8)), /* restore lower 16 bits of reg 8 */
MIPS32_B(NEG16(7)), /* b start */
MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, val);
exit:
pracc_queue_free(&ctx);
return ctx.retval;
/**
* Note that our input parametes cp0_reg and cp0_sel
@@ -557,10 +544,9 @@ int mips32_cp0_read(struct mips_ejtag *ejtag_info, uint32_t *val, uint32_t cp0_r
*
* MIPS32_MTC0 is implemented via MIPS32_R_INST macro.
* In order to insert our parameters, we must change rd and funct fields.
*/
code[2] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct of MIPS32_R_INST macro */
return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, val, 1);
*
* code[2] |= (cp0_reg << 11) | cp0_sel; change rd and funct of MIPS32_R_INST macro
**/
}
int mips32_cp0_write(struct mips_ejtag *ejtag_info, uint32_t val, uint32_t cp0_reg, uint32_t cp0_sel)
@@ -950,47 +936,48 @@ int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs)
{
static int cp0_read_code[] = {
MIPS32_MFC0(2, 12, 0), /* move status to $2 */
MIPS32_MFLO(2), /* move lo to $2 */
MIPS32_MFHI(2), /* move hi to $2 */
MIPS32_MFC0(2, 8, 0), /* move badvaddr to $2 */
MIPS32_MFC0(2, 13, 0), /* move cause to $2 */
MIPS32_MFC0(2, 24, 0), /* move depc (pc) to $2 */
MIPS32_MFC0(8, 12, 0), /* move status to $8 */
MIPS32_MFLO(8), /* move lo to $8 */
MIPS32_MFHI(8), /* move hi to $8 */
MIPS32_MFC0(8, 8, 0), /* move badvaddr to $8 */
MIPS32_MFC0(8, 13, 0), /* move cause to $8 */
MIPS32_MFC0(8, 24, 0), /* move depc (pc) to $8 */
};
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;
struct pracc_queue_info ctx = {.max_code = 48};
pracc_queue_init(&ctx);
if (ctx.retval != ERROR_OK)
goto exit;
*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 */
pracc_add(&ctx, 0, MIPS32_MTC0(1, 31, 0)); /* move $1 to COP0 DeSave */
pracc_add(&ctx, 0, 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 = 2; i != 32; i++) /* store GPR's 2 to 31 */
pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT + (i * 4),
MIPS32_SW(i, PRACC_OUT_OFFSET + (i * 4), 1));
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 */
pracc_add(&ctx, 0, cp0_read_code[i]); /* load COP0 needed registers to $8 */
pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT + (i + 32) * 4, /* store $8 at PARAM OUT */
MIPS32_SW(8, PRACC_OUT_OFFSET + (i + 32) * 4, 1));
}
pracc_add(&ctx, 0, MIPS32_MFC0(8, 31, 0)); /* move DeSave to $8, reg1 value */
pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT + 4, /* store reg1 value from $8 to param out */
MIPS32_SW(8, PRACC_OUT_OFFSET + 4, 1));
*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 */
pracc_add(&ctx, 0, MIPS32_B(NEG16(ctx.code_count + 1))); /* jump to start */
pracc_add(&ctx, 0, MIPS32_MFC0(1, 31, 0)); /* move COP0 DeSave to $1, restore reg1 */
*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 */
if (ejtag_info->mode == 0)
ctx.store_count++; /* Needed by legacy code, due to offset from reg0 */
int retval = mips32_pracc_exec(ejtag_info, 49, code, 0, NULL, MIPS32NUMCOREREGS, regs, 1);
free(code);
ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, regs);
ejtag_info->reg8 = regs[8];
ejtag_info->reg8 = regs[8]; /* reg8 is saved but not restored, next called function should restore it */
ejtag_info->reg9 = regs[9];
return retval;
exit:
pracc_queue_free(&ctx);
return ctx.retval;
}
/* fastdata upload/download requires an initialized working area