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; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ ARRAY_SIZE(param_in), param_in, 0, NULL, 1); return ERROR_OK; }
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 */ 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_LW(8, 0, 15), /* lw $8,($15) */ MIPS32_B(NEG16(9)), /* 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; }
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_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 5th 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 */ 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) */ 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 */ }; /** * Note that our input parametes cp0_reg and cp0_sel * are numbers (not gprs) which make part of mfc0 instruction opcode. * * These are not fix, but can be different for each mips32_cp0_read() function call, * and that is why we must insert them directly into opcode, * i.e. we can not pass it on EJTAG microprogram stack (via param_in), * and put them into the gprs later from MIPS32_PRACC_STACK * because mfc0 do not use gpr as a parameter for the cp0_reg and select part, * but plain (immediate) number. * * 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); 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; }
/** * \b mips32_pracc_sync_cache * * Synchronize Caches to Make Instruction Writes Effective * (ref. doc. MIPS32 Architecture For Programmers Volume II: The MIPS32 Instruction Set, * Document Number: MD00086, Revision 2.00, June 9, 2003) * * When the instruction stream is written, the SYNCI instruction should be used * in conjunction with other instructions to make the newly-written instructions effective. * * Explanation : * A program that loads another program into memory is actually writing the D- side cache. * The instructions it has loaded can't be executed until they reach the I-cache. * * After the instructions have been written, the loader should arrange * to write back any containing D-cache line and invalidate any locations * already in the I-cache. * * You can do that with cache instructions, but those instructions are only available in kernel mode, * and a loader writing instructions for the use of its own process need not be privileged software. * * In the latest MIPS32/64 CPUs, MIPS provides the synci instruction, * which does the whole job for a cache-line-sized chunk of the memory you just loaded: * That is, it arranges a D-cache write-back and an I-cache invalidate. * * To employ synci at user level, you need to know the size of a cache line, * and that can be obtained with a rdhwr SYNCI_Step * from one of the standard “hardware registers”. */ static int mips32_pracc_sync_cache(struct mips_ejtag *ejtag_info, uint32_t start_addr, uint32_t end_addr) { 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 start_addr to $9 */ MIPS32_LW(10, 4, 8), /* Load write end_addr to $10 */ MIPS32_RDHWR(11, MIPS32_SYNCI_STEP), /* $11 = MIPS32_SYNCI_STEP */ MIPS32_BEQ(11, 0, 6), /* beq $11, $0, end */ MIPS32_NOP, /* synci_loop : */ MIPS32_SYNCI(0, 9), /* synci 0($9) */ MIPS32_SLTU(8, 10, 9), /* sltu $8, $10, $9 # $8 = $10 < $9 ? 1 : 0 */ MIPS32_BNE(8, 0, NEG16(3)), /* bne $8, $0, synci_loop */ MIPS32_ADDU(9, 9, 11), /* $9 += MIPS32_SYNCI_STEP */ MIPS32_SYNC, /* 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(24)), /* b start */ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */ }; /* TODO remove array */ uint32_t *param_in = malloc(2 * sizeof(uint32_t)); int retval; param_in[0] = start_addr; param_in[1] = end_addr; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 2, param_in, 0, NULL, 1); free(param_in); return retval; }
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 */ /* 8 */ MIPS32_MTC0(9, 0, 0), /* move $9 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 $15 */ }; /** * Note that MIPS32_MTC0 macro is implemented via MIPS32_R_INST macro. * In order to insert our parameters, we must change rd and funct fields. */ code[8] |= (cp0_reg << 11) | cp0_sel; /* change rd and funct fields of MIPS32_R_INST macro */ /* TODO remove array */ uint32_t *param_in = malloc(1 * sizeof(uint32_t)); int retval; param_in[0] = val; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 1, param_in, 0, NULL, 1); free(param_in); return retval; }
/** * \b mips32_pracc_clean_invalidate_cache * * Writeback D$ and Invalidate I$ * so that the instructions written can be visible to CPU */ static int mips32_pracc_clean_invalidate_cache(struct mips_ejtag *ejtag_info, uint32_t start_addr, uint32_t end_addr) { 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 start_addr to $9 */ MIPS32_LW(10, 4, 8), /* Load write end_addr to $10 */ MIPS32_LW(11, 8, 8), /* Load write clsiz to $11 */ /* cache_loop: */ MIPS32_SLTU(8, 10, 9), /* sltu $8, $10, $9 : $8 <- $10 < $9 ? */ MIPS32_BGTZ(8, 6), /* bgtz $8, end */ MIPS32_NOP, MIPS32_CACHE(MIPS32_CACHE_D_HIT_WRITEBACK, 0, 9), /* cache Hit_Writeback_D, 0($9) */ MIPS32_CACHE(MIPS32_CACHE_I_HIT_INVALIDATE, 0, 9), /* cache Hit_Invalidate_I, 0($9) */ MIPS32_ADDU(9, 9, 11), /* $9 += $11 */ MIPS32_B(NEG16(7)), /* b cache_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(25)), /* b start */ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */ }; /** * Find cache line size in bytes */ uint32_t conf; uint32_t dl, clsiz; mips32_cp0_read(ejtag_info, &conf, 16, 1); dl = (conf & MIPS32_CONFIG1_DL_MASK) >> MIPS32_CONFIG1_DL_SHIFT; /* dl encoding : dl=1 => 4 bytes, dl=2 => 8 bytes, etc... */ clsiz = 0x2 << dl; /* TODO remove array */ uint32_t *param_in = malloc(3 * sizeof(uint32_t)); int retval; param_in[0] = start_addr; param_in[1] = end_addr; param_in[2] = clsiz; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, 3, param_in, 0, NULL, 1); free(param_in); return retval; }
static int mips32_pracc_read_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), /* $9 = mem[$8]; read addr */ MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)), /* loop: */ MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LBU(8, 0, 9), /* lw $8,0($9), Load t4 with the byte @mem[t1] */ MIPS32_SW(8, 0, 11), /* sw $8,0($11) */ MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */ MIPS32_ADDI(9, 9, 1), /* $9 += 1 */ MIPS32_ADDI(11, 11, 4), /* $11 += 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(27)), /* b start */ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */ }; /* TODO remove array */ uint32_t *param_out = malloc(count * sizeof(uint32_t)); if (param_out == NULL) { LOG_ERROR("Out of memory"); return ERROR_FAIL; } int retval = ERROR_OK; int blocksize; uint32_t param_in[2]; int bytesread = 0; while (count > 0) { blocksize = count; if (count > 0x400) blocksize = 0x400; param_in[0] = addr; param_in[1] = blocksize; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, ARRAY_SIZE(param_in), param_in, count, ¶m_out[bytesread], 1); if (retval != ERROR_OK) return retval; count -= blocksize; addr += blocksize; bytesread += blocksize; } int i; for (i = 0; i < bytesread; i++) buf[i] = param_out[i]; free(param_out); return retval; }
static int mips32_pracc_read_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_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), /* $9 = mem[$8]; read addr */ MIPS32_LW(10, 4, 8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11, UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11, 11, LOWER16(MIPS32_PRACC_PARAM_OUT)), /* loop: */ MIPS32_BEQ(0, 10, 8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LW(8, 0, 9), /* lw $8,0($9), Load $8 with the word @mem[$9] */ MIPS32_SW(8, 0, 11), /* sw $8,0($11) */ MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */ MIPS32_ADDI(9, 9, 4), /* $1 += 4 */ MIPS32_ADDI(11, 11, 4), /* $11 += 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(27)), /* b start */ MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */ }; int retval = ERROR_OK; int blocksize; int wordsread; uint32_t param_in[2]; wordsread = 0; while (count > 0) { blocksize = count; if (count > 0x400) blocksize = 0x400; param_in[0] = addr; param_in[1] = blocksize; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, ARRAY_SIZE(param_in), param_in, blocksize, &buf[wordsread], 1); if (retval != ERROR_OK) return retval; count -= blocksize; addr += blocksize*sizeof(uint32_t); wordsread += blocksize; } return retval; }
int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) { static const uint32_t code[] = { /* start: */ MIPS32_MTC0(2,31,0), /* move $2 to COP0 DeSave */ MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $2 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_OUT)), MIPS32_SW(0,0*4,2), /* sw $0,0*4($2) */ MIPS32_SW(1,1*4,2), /* sw $1,1*4($2) */ MIPS32_SW(15,15*4,2), /* sw $15,15*4($2) */ MIPS32_MFC0(2,31,0), /* move COP0 DeSave to $2 */ 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(1,0,15), /* sw $1,($15) */ MIPS32_SW(2,0,15), /* sw $2,($15) */ MIPS32_LUI(1,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $1 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(1,1,LOWER16(MIPS32_PRACC_PARAM_OUT)), MIPS32_SW(2,2*4,1), /* sw $2,2*4($1) */ MIPS32_SW(3,3*4,1), /* sw $3,3*4($1) */ MIPS32_SW(4,4*4,1), /* sw $4,4*4($1) */ MIPS32_SW(5,5*4,1), /* sw $5,5*4($1) */ MIPS32_SW(6,6*4,1), /* sw $6,6*4($1) */ MIPS32_SW(7,7*4,1), /* sw $7,7*4($1) */ MIPS32_SW(8,8*4,1), /* sw $8,8*4($1) */ MIPS32_SW(9,9*4,1), /* sw $9,9*4($1) */ MIPS32_SW(10,10*4,1), /* sw $10,10*4($1) */ MIPS32_SW(11,11*4,1), /* sw $11,11*4($1) */ MIPS32_SW(12,12*4,1), /* sw $12,12*4($1) */ MIPS32_SW(13,13*4,1), /* sw $13,13*4($1) */ MIPS32_SW(14,14*4,1), /* sw $14,14*4($1) */ MIPS32_SW(16,16*4,1), /* sw $16,16*4($1) */ MIPS32_SW(17,17*4,1), /* sw $17,17*4($1) */ MIPS32_SW(18,18*4,1), /* sw $18,18*4($1) */ MIPS32_SW(19,19*4,1), /* sw $19,19*4($1) */ MIPS32_SW(20,20*4,1), /* sw $20,20*4($1) */ MIPS32_SW(21,21*4,1), /* sw $21,21*4($1) */ MIPS32_SW(22,22*4,1), /* sw $22,22*4($1) */ MIPS32_SW(23,23*4,1), /* sw $23,23*4($1) */ MIPS32_SW(24,24*4,1), /* sw $24,24*4($1) */ MIPS32_SW(25,25*4,1), /* sw $25,25*4($1) */ MIPS32_SW(26,26*4,1), /* sw $26,26*4($1) */ MIPS32_SW(27,27*4,1), /* sw $27,27*4($1) */ MIPS32_SW(28,28*4,1), /* sw $28,28*4($1) */ MIPS32_SW(29,29*4,1), /* sw $29,29*4($1) */ MIPS32_SW(30,30*4,1), /* sw $30,30*4($1) */ MIPS32_SW(31,31*4,1), /* sw $31,31*4($1) */ MIPS32_MFC0(2,12,0), /* move status to $2 */ MIPS32_SW(2,32*4,1), /* sw $2,32*4($1) */ MIPS32_MFLO(2), /* move lo to $2 */ MIPS32_SW(2,33*4,1), /* sw $2,33*4($1) */ MIPS32_MFHI(2), /* move hi to $2 */ MIPS32_SW(2,34*4,1), /* sw $2,34*4($1) */ MIPS32_MFC0(2,8,0), /* move badvaddr to $2 */ MIPS32_SW(2,35*4,1), /* sw $2,35*4($1) */ MIPS32_MFC0(2,13,0), /* move cause to $2 */ MIPS32_SW(2,36*4,1), /* sw $2,36*4($1) */ MIPS32_MFC0(2,24,0), /* move depc (pc) to $2 */ MIPS32_SW(2,37*4,1), /* sw $2,37*4($1) */ MIPS32_LW(2,0,15), /* lw $2,($15) */ MIPS32_LW(1,0,15), /* lw $1,($15) */ MIPS32_B(NEG16(58)), /* b start */ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */ }; int retval; retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ 0, NULL, MIPS32NUMCOREREGS, regs, 1); return retval; }
int mips32_pracc_read_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), /* $9 = mem[$8]; read addr */ MIPS32_LW(10,4,8), /* $10 = mem[$8 + 4]; read count */ MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11 = MIPS32_PRACC_PARAM_OUT */ MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)), /* loop: */ MIPS32_BEQ(0,10,8), /* beq 0, $10, end */ MIPS32_NOP, MIPS32_LHU(8,0,9), /* lw $8,0($9), Load $8 with the halfword @mem[$9] */ MIPS32_SW(8,0,11), /* sw $8,0($11) */ MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */ MIPS32_ADDI(9,9,2), /* $9 += 2 */ MIPS32_ADDI(11,11,4), /* $11 += 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(27)), /* b start */ MIPS32_MFC0(15,30,0), /* move COP0 DeSave to $15 */ }; /* TODO remove array */ uint32_t *param_out = malloc(count * sizeof(uint32_t)); int i; // int retval; int blocksize; int bytesread; uint32_t param_in[2]; bytesread = 0; //while (count > 0) { blocksize = count; if (count > 0x400) blocksize = 0x400; param_in[0] = addr; param_in[1] = blocksize; mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \ ARRAY_SIZE(param_in), param_in, count, param_out, 1); // count -= blocksize; // addr += blocksize; // bytesread += blocksize; } for (i = 0; i < count; i++) { buf[i] = param_out[i]; } free(param_out); return ERROR_OK; }