@@ -568,26 +568,20 @@ int mips32_cp0_read(struct mips_ejtag *ejtag_info, uint32_t *val, uint32_t cp0_r
{
/**
* Do not make this code static, but regenerate it every time,
* as 5 th element has to be changed to add parameters
* as 3 th 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 */
};
/**
@@ -604,56 +598,32 @@ 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[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;
code[3] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct fields of MIPS32_R_INST macro */
retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 1, param_in, 0, NULL, 1);
free(param_in);
return retval;
return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 0, NULL, 1);
}
/**