X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fmips32_pracc.c;h=da9a2b718092c8a6788b00bd43f91b6f781ebd26;hp=bae436784af3253a64c7520e2d3b800b6db3b2cf;hb=517ba0690dcc9e859a05df2113ce32401a5ab254;hpb=47728f92159e11668a4aa1ec3d2713ee38a87192 diff --git a/src/target/mips32_pracc.c b/src/target/mips32_pracc.c index bae436784a..da9a2b7180 100644 --- a/src/target/mips32_pracc.c +++ b/src/target/mips32_pracc.c @@ -22,7 +22,7 @@ * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * ***************************************************************************/ /* @@ -93,24 +93,6 @@ struct mips32_pracc_context { struct mips_ejtag *ejtag_info; }; -static int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint8_t *buf); -static int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint16_t *buf); -static int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint32_t *buf); -static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, - uint32_t addr, uint32_t *buf); - -static int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint8_t *buf); -static int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint16_t *buf); -static int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, - uint32_t addr, int count, uint32_t *buf); -static int mips32_pracc_write_u32(struct mips_ejtag *ejtag_info, - uint32_t addr, uint32_t *buf); - static int mips32_pracc_sync_cache(struct mips_ejtag *ejtag_info, uint32_t start_addr, uint32_t end_addr); static int mips32_pracc_clean_invalidate_cache(struct mips_ejtag *ejtag_info, @@ -171,10 +153,15 @@ static int mips32_pracc_exec_read(struct mips32_pracc_context *ctx, uint32_t add } /* save to our debug stack */ data = ctx->stack[--ctx->stack_offset]; + } else if (address >= 0xFF200000) { + /* CPU keeps reading at the end of execution. + * If we after 0xF0000000 address range, we can use + * one shot jump instruction. + * Since this instruction is limited to + * 26bit, we need to do some magic to fit it to our needs. */ + LOG_DEBUG("Reading unexpected address. Jump to 0xFF200200\n"); + data = MIPS32_J((0x0FFFFFFF & 0xFF200200) >> 2); } else { - /* TODO: send JMP 0xFF200000 instruction. Hopefully processor jump back - * to start of debug vector */ - LOG_ERROR("Error reading unexpected address 0x%8.8" PRIx32 "", address); return ERROR_JTAG_DEVICE_ERROR; } @@ -212,11 +199,7 @@ static int mips32_pracc_exec_write(struct mips32_pracc_context *ctx, uint32_t ad if (retval != ERROR_OK) return retval; - if ((address >= MIPS32_PRACC_PARAM_IN) - && (address < MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4)) { - offset = (address - MIPS32_PRACC_PARAM_IN) / 4; - ctx->local_iparam[offset] = data; - } else if ((address >= MIPS32_PRACC_PARAM_OUT) + if ((address >= MIPS32_PRACC_PARAM_OUT) && (address < MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4)) { offset = (address - MIPS32_PRACC_PARAM_OUT) / 4; ctx->local_oparam[offset] = data; @@ -292,303 +275,264 @@ int mips32_pracc_exec(struct mips_ejtag *ejtag_info, int code_len, const uint32_ return ERROR_OK; } -int mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf) +inline void pracc_queue_init(struct pracc_queue_info *ctx) { - switch (size) { - case 1: - return mips32_pracc_read_mem8(ejtag_info, addr, count, (uint8_t *)buf); - case 2: - return mips32_pracc_read_mem16(ejtag_info, addr, count, (uint16_t *)buf); - case 4: - if (count == 1) - return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf); - else - return mips32_pracc_read_mem32(ejtag_info, addr, count, (uint32_t *)buf); - } + ctx->retval = ERROR_OK; + ctx->code_count = 0; + ctx->store_count = 0; - return ERROR_OK; + ctx->pracc_list = malloc(2 * ctx->max_code * sizeof(uint32_t)); + if (ctx->pracc_list == NULL) { + LOG_ERROR("Out of memory"); + ctx->retval = ERROR_FAIL; + } } -static int mips32_pracc_read_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf) +inline void pracc_add(struct pracc_queue_info *ctx, uint32_t addr, uint32_t instr) { - 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; + ctx->pracc_list[ctx->max_code + ctx->code_count] = addr; + ctx->pracc_list[ctx->code_count++] = instr; + if (addr) + ctx->store_count++; } -static int mips32_pracc_read_u32(struct mips_ejtag *ejtag_info, uint32_t addr, uint32_t *buf) +inline void pracc_queue_free(struct pracc_queue_info *ctx) { - 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; + if (ctx->code_count > ctx->max_code) /* Only for internal check, will be erased */ + LOG_ERROR("Internal error, code count: %d > max code: %d", ctx->code_count, ctx->max_code); + if (ctx->pracc_list != NULL) + free(ctx->pracc_list); } -static int mips32_pracc_read_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf) +int mips32_pracc_queue_exec(struct mips_ejtag *ejtag_info, struct pracc_queue_info *ctx, 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_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)); - if (param_out == NULL) { + if (ejtag_info->mode == 0) + return mips32_pracc_exec(ejtag_info, ctx->code_count, ctx->pracc_list, 0, NULL, + ctx->store_count, buf, ctx->code_count - 1); + + union scan_in { + uint8_t scan_96[12]; + struct { + uint8_t ctrl[4]; + uint8_t data[4]; + uint8_t addr[4]; + } scan_32; + + } *scan_in = malloc(sizeof(union scan_in) * (ctx->code_count + ctx->store_count)); + if (scan_in == NULL) { LOG_ERROR("Out of memory"); return ERROR_FAIL; } - int retval = ERROR_OK; - int blocksize; - int hwordsread = 0; - uint32_t param_in[2]; + unsigned num_clocks = + ((uint64_t)(ejtag_info->scan_delay) * jtag_get_speed_khz() + 500000) / 1000000; - while (count > 0) { - blocksize = count; - if (count > 0x400) - blocksize = 0x400; + uint32_t ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC; + mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ALL); - param_in[0] = addr; - param_in[1] = blocksize; + int scan_count = 0; + for (int i = 0; i != 2 * ctx->code_count; i++) { + uint32_t data = 0; + if (i & 1u) { /* Check store address from previous instruction, if not the first */ + if (i < 2 || 0 == ctx->pracc_list[ctx->max_code + (i / 2) - 1]) + continue; + } else + data = ctx->pracc_list[i / 2]; - retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - ARRAY_SIZE(param_in), param_in, blocksize, ¶m_out[hwordsread], 1); + jtag_add_clocks(num_clocks); + mips_ejtag_add_scan_96(ejtag_info, ejtag_ctrl, data, scan_in[scan_count++].scan_96); + } - if (retval != ERROR_OK) - return retval; + int retval = jtag_execute_queue(); /* execute queued scans */ + if (retval != ERROR_OK) + goto exit; + + uint32_t fetch_addr = MIPS32_PRACC_TEXT; /* start address */ + scan_count = 0; + for (int i = 0; i != 2 * ctx->code_count; i++) { /* verify every pracc access */ + uint32_t store_addr = 0; + if (i & 1u) { /* Read store addres from previous instruction, if not the first */ + store_addr = ctx->pracc_list[ctx->max_code + (i / 2) - 1]; + if (i < 2 || 0 == store_addr) + continue; + } - count -= blocksize; - addr += blocksize*sizeof(uint16_t); - hwordsread += blocksize; - } + ejtag_ctrl = buf_get_u32(scan_in[scan_count].scan_32.ctrl, 0, 32); + if (!(ejtag_ctrl & EJTAG_CTRL_PRACC)) { + LOG_ERROR("Error: access not pending count: %d", scan_count); + retval = ERROR_FAIL; + goto exit; + } - int i; - for (i = 0; i < hwordsread; i++) - buf[i] = param_out[i]; + uint32_t addr = buf_get_u32(scan_in[scan_count].scan_32.addr, 0, 32); + + if (store_addr != 0) { + if (!(ejtag_ctrl & EJTAG_CTRL_PRNW)) { + LOG_ERROR("Not a store/write access, count: %d", scan_count); + retval = ERROR_FAIL; + goto exit; + } + if (addr != store_addr) { + LOG_ERROR("Store address mismatch, read: %" PRIx32 " expected: %" PRIx32 " count: %d", + addr, store_addr, scan_count); + retval = ERROR_FAIL; + goto exit; + } + int buf_index = (addr - MIPS32_PRACC_PARAM_OUT) / 4; + buf[buf_index] = buf_get_u32(scan_in[scan_count].scan_32.data, 0, 32); - free(param_out); + } else { + if (ejtag_ctrl & EJTAG_CTRL_PRNW) { + LOG_ERROR("Not a fetch/read access, count: %d", scan_count); + retval = ERROR_FAIL; + goto exit; + } + if (addr != fetch_addr) { + LOG_ERROR("Fetch addr mismatch, read: %" PRIx32 " expected: %" PRIx32 " count: %d", + addr, fetch_addr, scan_count); + retval = ERROR_FAIL; + goto exit; + } + fetch_addr += 4; + } + scan_count++; + } +exit: + free(scan_in); return retval; } -static int mips32_pracc_read_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf) +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_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 */ - }; + struct pracc_queue_info ctx = {.max_code = 9}; + pracc_queue_init(&ctx); + if (ctx.retval != ERROR_OK) + goto exit; + + 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_LUI(8, UPPER16((addr + 0x8000)))); /* load $8 with modified upper address */ + pracc_add(&ctx, 0, MIPS32_LW(8, LOWER16(addr), 8)); /* lw $8, LOWER16(addr)($8) */ + pracc_add(&ctx, MIPS32_PRACC_PARAM_OUT, + MIPS32_SW(8, PRACC_OUT_OFFSET, 15)); /* sw $8,PRACC_OUT_OFFSET($15) */ + pracc_add(&ctx, 0, MIPS32_LUI(8, UPPER16(ejtag_info->reg8))); /* restore upper 16 of $8 */ + pracc_add(&ctx, 0, MIPS32_ORI(8, 8, LOWER16(ejtag_info->reg8))); /* restore lower 16 of $8 */ + 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, buf); +exit: + pracc_queue_free(&ctx); + return ctx.retval; +} - /* 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 mips32_pracc_read_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf) +{ + if (count == 1 && size == 4) + return mips32_pracc_read_u32(ejtag_info, addr, (uint32_t *)buf); + + uint32_t *data = NULL; + 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)); + if (data == NULL) { + LOG_ERROR("Out of memory"); + goto exit; + } } - 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; + uint32_t *buf32 = buf; + uint16_t *buf16 = buf; + uint8_t *buf8 = buf; + + while (count) { + 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) + pracc_add(&ctx, 0, MIPS32_LW(8, LOWER16(addr), 9)); /* load from memory to $8 */ + else if (size == 2) + pracc_add(&ctx, 0, MIPS32_LHU(8, LOWER16(addr), 9)); + else + pracc_add(&ctx, 0, MIPS32_LBU(8, LOWER16(addr), 9)); - count -= blocksize; - addr += blocksize; - bytesread += blocksize; + 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 */ + + 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) { + ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, buf32); + if (ctx.retval != ERROR_OK) + goto exit; + buf32 += this_round_count; + } else { + ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, data); + if (ctx.retval != ERROR_OK) + goto exit; + + uint32_t *data_p = data; + for (int i = 0; i != this_round_count; i++) { + if (size == 2) + *buf16++ = *data_p++; + else + *buf8++ = *data_p++; + } + } + count -= this_round_count; } - int i; - for (i = 0; i < bytesread; i++) - buf[i] = param_out[i]; - - free(param_out); - return retval; +exit: + pracc_queue_free(&ctx); + if (data != NULL) + free(data); + 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 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 */ - }; + struct pracc_queue_info ctx = {.max_code = 8}; + pracc_queue_init(&ctx); + if (ctx.retval != ERROR_OK) + goto exit; + + 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 */ + + 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 @@ -603,57 +547,37 @@ 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); - - return retval; + * + * 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) +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) */ + struct pracc_queue_info ctx = {.max_code = 6}; + pracc_queue_init(&ctx); + if (ctx.retval != ERROR_OK) + goto exit; - 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 */ + 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))); - /* 8 */ MIPS32_MTC0(9, 0, 0), /* move $9 to COP0 [cp0_reg select] */ + pracc_add(&ctx, 0, MIPS32_MTC0(15, 0, 0) | (cp0_reg << 11) | cp0_sel); /* write cp0 reg / sel */ - 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 */ - }; + 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[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; + * code[3] |= (cp0_reg << 11) | cp0_sel; change rd and funct fields of MIPS32_R_INST macro + **/ } /** @@ -806,27 +730,80 @@ static int mips32_pracc_clean_invalidate_cache(struct mips_ejtag *ejtag_info, return retval; } - -int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, void *buf) +static int mips32_pracc_write_mem_generic(struct mips_ejtag *ejtag_info, + uint32_t addr, int size, int count, const void *buf) { - int retval; + 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; + + const uint32_t *buf32 = buf; + const uint16_t *buf16 = buf; + const uint8_t *buf8 = buf; + + while (count) { + 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)); + + 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 (int i = 0; i != this_round_count; i++) { + uint32_t upper_base_addr = UPPER16((addr + 0x8000)); + if (last_upper_base_addr != upper_base_addr) { + 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 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))); + } + pracc_add(&ctx, 0, MIPS32_SW(8, LOWER16(addr), 15)); /* store word to memory */ + buf32++; + + } else if (size == 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 { + 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; + } - switch (size) { - case 1: - retval = mips32_pracc_write_mem8(ejtag_info, addr, count, (uint8_t *)buf); - break; - case 2: - retval = mips32_pracc_write_mem16(ejtag_info, addr, count, (uint16_t *)buf); - break; - case 4: - if (count == 1) - retval = mips32_pracc_write_u32(ejtag_info, addr, (uint32_t *)buf); - else - retval = mips32_pracc_write_mem32(ejtag_info, addr, count, (uint32_t *)buf); - break; - default: - retval = ERROR_FAIL; + 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_B(NEG16(ctx.code_count + 1))); /* jump to start */ + pracc_add(&ctx, 0, MIPS32_MFC0(15, 31, 0)); /* restore $15 from DeSave */ + + ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL); + if (ctx.retval != ERROR_OK) + goto exit; + count -= this_round_count; } +exit: + pracc_queue_free(&ctx); + return ctx.retval; +} + +int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int size, int count, const void *buf) +{ + int retval = mips32_pracc_write_mem_generic(ejtag_info, addr, size, count, buf); + if (retval != ERROR_OK) + return retval; /** * If we are in the cachable regoion and cache is activated, @@ -890,343 +867,98 @@ int mips32_pracc_write_mem(struct mips_ejtag *ejtag_info, uint32_t addr, int siz 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; -} - -static 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; - - return mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - ARRAY_SIZE(param_in), param_in, 0, NULL, 1); -} - -static int mips32_pracc_write_mem16(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint16_t *buf) +int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) { - 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_SH(11, 0, 9), /* sh $11,0($9) */ - - MIPS32_ADDI(10, 10, NEG16(1)), /* $10-- */ - MIPS32_ADDI(9, 9, 2), /* $9 += 2 */ - 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 */ + static const uint32_t cp0_write_code[] = { + MIPS32_MTC0(1, 12, 0), /* move $1 to status */ + MIPS32_MTLO(1), /* move $1 to lo */ + MIPS32_MTHI(1), /* move $1 to hi */ + MIPS32_MTC0(1, 8, 0), /* move $1 to badvaddr */ + MIPS32_MTC0(1, 13, 0), /* move $1 to cause*/ + MIPS32_MTC0(1, 24, 0), /* move $1 to depc (pc) */ }; - /* TODO remove array */ - uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t)); - int i; - param_in[0] = addr; - param_in[1] = count; + struct pracc_queue_info ctx = {.max_code = 37 * 2 + 6 + 1}; + pracc_queue_init(&ctx); + if (ctx.retval != ERROR_OK) + goto exit; + + /* 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) /* 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 (i = 0; i < count; i++) - param_in[i + 2] = buf[i]; + for (int i = 0; i != 6; i++) { + 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 */ + } - int retval; - retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - count + 2, param_in, 0, NULL, 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 */ - free(param_in); + ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, NULL); - return retval; + ejtag_info->reg8 = regs[8]; + ejtag_info->reg9 = regs[9]; +exit: + pracc_queue_free(&ctx); + return ctx.retval; } -static int mips32_pracc_write_mem8(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint8_t *buf) +int mips32_pracc_read_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) { - 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 */ + static int cp0_read_code[] = { + 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 */ }; - /* 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; -} + struct pracc_queue_info ctx = {.max_code = 48}; + pracc_queue_init(&ctx); + if (ctx.retval != ERROR_OK) + goto exit; -int mips32_pracc_write_regs(struct mips_ejtag *ejtag_info, uint32_t *regs) -{ - static const uint32_t code[] = { - /* start: */ - MIPS32_LUI(2, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $2 = MIPS32_PRACC_PARAM_IN */ - MIPS32_ORI(2, 2, LOWER16(MIPS32_PRACC_PARAM_IN)), - MIPS32_LW(1, 1*4, 2), /* lw $1,1*4($2) */ - MIPS32_LW(15, 15*4, 2), /* lw $15,15*4($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_LUI(1, UPPER16(MIPS32_PRACC_PARAM_IN)), /* $1 = MIPS32_PRACC_PARAM_IN */ - MIPS32_ORI(1, 1, LOWER16(MIPS32_PRACC_PARAM_IN)), - MIPS32_LW(3, 3*4, 1), /* lw $3,3*4($1) */ - MIPS32_LW(4, 4*4, 1), /* lw $4,4*4($1) */ - MIPS32_LW(5, 5*4, 1), /* lw $5,5*4($1) */ - MIPS32_LW(6, 6*4, 1), /* lw $6,6*4($1) */ - MIPS32_LW(7, 7*4, 1), /* lw $7,7*4($1) */ - MIPS32_LW(8, 8*4, 1), /* lw $8,8*4($1) */ - MIPS32_LW(9, 9*4, 1), /* lw $9,9*4($1) */ - MIPS32_LW(10, 10*4, 1), /* lw $10,10*4($1) */ - MIPS32_LW(11, 11*4, 1), /* lw $11,11*4($1) */ - MIPS32_LW(12, 12*4, 1), /* lw $12,12*4($1) */ - MIPS32_LW(13, 13*4, 1), /* lw $13,13*4($1) */ - MIPS32_LW(14, 14*4, 1), /* lw $14,14*4($1) */ - MIPS32_LW(16, 16*4, 1), /* lw $16,16*4($1) */ - MIPS32_LW(17, 17*4, 1), /* lw $17,17*4($1) */ - MIPS32_LW(18, 18*4, 1), /* lw $18,18*4($1) */ - MIPS32_LW(19, 19*4, 1), /* lw $19,19*4($1) */ - MIPS32_LW(20, 20*4, 1), /* lw $20,20*4($1) */ - MIPS32_LW(21, 21*4, 1), /* lw $21,21*4($1) */ - MIPS32_LW(22, 22*4, 1), /* lw $22,22*4($1) */ - MIPS32_LW(23, 23*4, 1), /* lw $23,23*4($1) */ - MIPS32_LW(24, 24*4, 1), /* lw $24,24*4($1) */ - MIPS32_LW(25, 25*4, 1), /* lw $25,25*4($1) */ - MIPS32_LW(26, 26*4, 1), /* lw $26,26*4($1) */ - MIPS32_LW(27, 27*4, 1), /* lw $27,27*4($1) */ - MIPS32_LW(28, 28*4, 1), /* lw $28,28*4($1) */ - MIPS32_LW(29, 29*4, 1), /* lw $29,29*4($1) */ - MIPS32_LW(30, 30*4, 1), /* lw $30,30*4($1) */ - MIPS32_LW(31, 31*4, 1), /* lw $31,31*4($1) */ - - MIPS32_LW(2, 32*4, 1), /* lw $2,32*4($1) */ - MIPS32_MTC0(2, 12, 0), /* move $2 to status */ - MIPS32_LW(2, 33*4, 1), /* lw $2,33*4($1) */ - MIPS32_MTLO(2), /* move $2 to lo */ - MIPS32_LW(2, 34*4, 1), /* lw $2,34*4($1) */ - MIPS32_MTHI(2), /* move $2 to hi */ - MIPS32_LW(2, 35*4, 1), /* lw $2,35*4($1) */ - MIPS32_MTC0(2, 8, 0), /* move $2 to badvaddr */ - MIPS32_LW(2, 36*4, 1), /* lw $2,36*4($1) */ - MIPS32_MTC0(2, 13, 0), /* move $2 to cause*/ - MIPS32_LW(2, 37*4, 1), /* lw $2,37*4($1) */ - MIPS32_MTC0(2, 24, 0), /* move $2 to depc (pc) */ - - MIPS32_LW(2, 2*4, 1), /* lw $2,2*4($1) */ - MIPS32_LW(1, 0, 15), /* lw $1,($15) */ - MIPS32_B(NEG16(53)), /* b start */ - MIPS32_MFC0(15, 31, 0), /* move COP0 DeSave to $15 */ - }; + 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 */ - int retval; + 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)); - retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - MIPS32NUMCOREREGS, regs, 0, NULL, 1); - - return retval; -} + for (int i = 0; i != 6; i++) { + 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)); -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 */ - }; + 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 */ - int retval; + if (ejtag_info->mode == 0) + ctx.store_count++; /* Needed by legacy code, due to offset from reg0 */ - retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, - 0, NULL, MIPS32NUMCOREREGS, regs, 1); + ctx.retval = mips32_pracc_queue_exec(ejtag_info, &ctx, regs); - return retval; + ejtag_info->reg8 = regs[8]; /* reg8 is saved but not restored, next called function should restore it */ + ejtag_info->reg9 = regs[9]; +exit: + pracc_queue_free(&ctx); + return ctx.retval; } /* fastdata upload/download requires an initialized working area @@ -1292,7 +1024,7 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are /* write program into RAM */ if (write_t != ejtag_info->fast_access_save) { - mips32_pracc_write_mem32(ejtag_info, source->address, ARRAY_SIZE(handler_code), handler_code); + mips32_pracc_write_mem_generic(ejtag_info, source->address, 4, ARRAY_SIZE(handler_code), handler_code); /* save previous operation to speed to any consecutive read/writes */ ejtag_info->fast_access_save = write_t; } @@ -1316,6 +1048,7 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are mips_ejtag_drscan_32_out(ejtag_info, ejtag_ctrl); } + /* wait PrAcc pending bit for FASTDATA write */ retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl); if (retval != ERROR_OK) return retval; @@ -1330,21 +1063,26 @@ int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_are if (address != MIPS32_PRACC_FASTDATA_AREA) return ERROR_FAIL; - /* wait PrAcc pending bit for FASTDATA write */ - retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl); - if (retval != ERROR_OK) - return retval; - /* Send the load start address */ val = addr; mips_ejtag_set_instr(ejtag_info, EJTAG_INST_FASTDATA); mips_ejtag_fastdata_scan(ejtag_info, 1, &val); + retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl); + if (retval != ERROR_OK) + return retval; + /* Send the load end address */ val = addr + (count - 1) * 4; + 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;