static int mips32_pracc_read_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_LW(8, NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), /* load R8 @ param_in[0] = address */
+ 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_LW(8, 0, 8), /* lw $8,0($8), Load $8 with the word @mem[$8] */
- MIPS32_SW(8, NEG16(MIPS32_PRACC_STACK - MIPS32_PRACC_PARAM_OUT), 15), /* store R8 @ param_out[0] */
+ 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, 0, 15), /* lw $8,($15) */
- MIPS32_B(NEG16(9)), /* 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(8)), /* b start */
+ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */
};
- int retval = ERROR_OK;
- uint32_t param_in[1];
-
- param_in[0] = addr;
-
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
- ARRAY_SIZE(param_in), param_in, 1, buf, 1);
- if (retval != ERROR_OK)
- return retval;
-
- 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)
{
/**
* Do not make this code static, but regenerate it every time,
- * as 5th element has to be changed to add parameters
+ * as 3th 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 */
};
/**
* 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;
+ code[3] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct of MIPS32_R_INST macro */
- retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 0, NULL, 1, param_out, 1);
-
- 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 */
+ code[3] |= (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;
-
- 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);
}
/**
projects / fw / openocd / blobdiff