1 /***************************************************************************
2 * Copyright (C) 2008 by Spencer Oliver *
3 * spen@spen-soft.co.uk *
5 * Copyright (C) 2008 by David T.L. Wong *
7 * This program is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the *
19 * Free Software Foundation, Inc., *
20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
21 ***************************************************************************/
24 This version has optimized assembly routines for 32 bit operations:
27 - write array of words
29 One thing to be aware of is that the MIPS32 cpu will execute the
30 instruction after a branch instruction (one delay slot).
39 The LW $1, ($2 +100) instruction is also executed. If this is
40 not wanted a NOP can be inserted:
47 or the code can be changed to:
53 The original code contained NOPs. I have removed these and moved
56 I also moved the PRACC_STACK to 0xFF204000. This allows
57 the use of 16 bits offsets to get pointers to the input
58 and output area relative to the stack. Note that the stack
59 isn't really a stack (the stack pointer is not 'moving')
60 but a FIFO simulated in software.
62 These changes result in a 35% speed increase when programming an
65 More improvement could be gained if the registers do no need
66 to be preserved but in that case the routines should be aware
67 OpenOCD is used as a flash programmer or as a debug tool.
80 #include "mips32_pracc.h"
91 mips_ejtag_t *ejtag_info;
92 } mips32_pracc_context;
94 static int wait_for_pracc_rw(mips_ejtag_t *ejtag_info, u32 *ctrl)
100 mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
101 ejtag_ctrl = ejtag_info->ejtag_ctrl;
102 mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
103 if (ejtag_ctrl & EJTAG_CTRL_PRACC)
105 LOG_DEBUG("DEBUGMODULE: No memory access in progress!\n");
106 return ERROR_JTAG_DEVICE_ERROR;
113 static int mips32_pracc_exec_read(mips32_pracc_context *ctx, u32 address)
115 mips_ejtag_t *ejtag_info = ctx->ejtag_info;
117 u32 ejtag_ctrl, data;
119 if ((address >= MIPS32_PRACC_PARAM_IN)
120 && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4))
122 offset = (address - MIPS32_PRACC_PARAM_IN) / 4;
123 data = ctx->local_iparam[offset];
125 else if ((address >= MIPS32_PRACC_PARAM_OUT)
126 && (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4))
128 offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
129 data = ctx->local_oparam[offset];
131 else if ((address >= MIPS32_PRACC_TEXT)
132 && (address <= MIPS32_PRACC_TEXT + ctx->code_len*4))
134 offset = (address - MIPS32_PRACC_TEXT) / 4;
135 data = ctx->code[offset];
137 else if (address == MIPS32_PRACC_STACK)
139 /* save to our debug stack */
140 data = ctx->stack[--ctx->stack_offset];
144 /* TODO: send JMP 0xFF200000 instruction. Hopefully processor jump back
145 * to start of debug vector */
148 LOG_ERROR("Error reading unexpected address %8.8x", address);
149 return ERROR_JTAG_DEVICE_ERROR;
152 /* Send the data out */
153 mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_DATA, NULL);
154 mips_ejtag_drscan_32(ctx->ejtag_info, &data);
156 /* Clear the access pending bit (let the processor eat!) */
158 ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
159 mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
160 mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
163 jtag_execute_queue();
169 static int mips32_pracc_exec_write(mips32_pracc_context *ctx, u32 address)
173 mips_ejtag_t *ejtag_info = ctx->ejtag_info;
175 mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_DATA, NULL);
176 mips_ejtag_drscan_32(ctx->ejtag_info, &data);
178 /* Clear access pending bit */
179 ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
180 mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
181 mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
184 jtag_execute_queue();
186 if ((address >= MIPS32_PRACC_PARAM_IN)
187 && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4))
189 offset = (address - MIPS32_PRACC_PARAM_IN) / 4;
190 ctx->local_iparam[offset] = data;
192 else if ((address >= MIPS32_PRACC_PARAM_OUT )
193 && (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4))
195 offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
196 ctx->local_oparam[offset] = data;
198 else if (address == MIPS32_PRACC_STACK)
200 /* save data onto our stack */
201 ctx->stack[ctx->stack_offset++] = data;
205 LOG_ERROR("Error writing unexpected address %8.8x", address);
206 return ERROR_JTAG_DEVICE_ERROR;
212 int mips32_pracc_exec( mips_ejtag_t *ejtag_info, int code_len, u32 *code, int num_param_in, u32 *param_in, int num_param_out, u32 *param_out, int cycle)
216 mips32_pracc_context ctx;
220 ctx.local_iparam = param_in;
221 ctx.local_oparam = param_out;
222 ctx.num_iparam = num_param_in;
223 ctx.num_oparam = num_param_out;
225 ctx.code_len = code_len;
226 ctx.ejtag_info = ejtag_info;
227 ctx.stack_offset = 0;
231 if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
235 mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
236 mips_ejtag_drscan_32(ejtag_info, &address);
238 // printf("Adres: %.8x\n", address);
240 /* Check for read or write */
241 if (ejtag_ctrl & EJTAG_CTRL_PRNW)
243 if ((retval = mips32_pracc_exec_write(&ctx, address)) != ERROR_OK)
248 /* Check to see if its reading at the debug vector. The first pass through
249 * the module is always read at the vector, so the first one we allow. When
250 * the second read from the vector occurs we are done and just exit. */
251 if ((address == MIPS32_PRACC_TEXT) && (pass++))
256 if ((retval = mips32_pracc_exec_read(&ctx, address)) != ERROR_OK)
265 /* stack sanity check */
266 if (ctx.stack_offset != 0)
268 LOG_DEBUG("Pracc Stack not zero");
274 int mips32_pracc_read_mem(mips_ejtag_t *ejtag_info, u32 addr, int size, int count, void *buf)
279 return mips32_pracc_read_mem8(ejtag_info, addr, count, (u8*)buf);
281 return mips32_pracc_read_mem16(ejtag_info, addr, count, (u16*)buf);
284 return mips32_pracc_read_u32(ejtag_info, addr, (u32*)buf);
286 return mips32_pracc_read_mem32(ejtag_info, addr, count, (u32*)buf);
292 int mips32_pracc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *buf)
296 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
297 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
298 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
299 MIPS32_SW(8,0,15), /* sw $8,($15) */
300 MIPS32_SW(9,0,15), /* sw $9,($15) */
301 MIPS32_SW(10,0,15), /* sw $10,($15) */
302 MIPS32_SW(11,0,15), /* sw $11,($15) */
304 MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
305 MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
306 MIPS32_LW(9,0,8), /* $9=mem[$8]; read addr */
307 MIPS32_LW(10,4,8), /* $10=mem[$8+4]; read count */
308 MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11=MIPS32_PRACC_PARAM_OUT */
309 MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)),
312 MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
315 MIPS32_LW(8,0,9), /* lw $8,0($9), Load $8 with the word @mem[$9] */
316 MIPS32_SW(8,0,11), /* sw $8,0($11) */
318 MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
319 MIPS32_ADDI(9,9,4), /* $1+=4 */
320 MIPS32_ADDI(11,11,4), /* $11+=4 */
323 MIPS32_B(NEG16(9)), /* b loop */
326 MIPS32_LW(11,0,15), /* lw $11,($15) */
327 MIPS32_LW(10,0,15), /* lw $10,($15) */
328 MIPS32_LW(9,0,15), /* lw $9,($15) */
329 MIPS32_LW(8,0,15), /* lw $8,($15) */
330 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
332 MIPS32_B(NEG16(31)), /* b start */
336 int retval = ERROR_OK;
350 param_in[1] = blocksize;
352 if ((retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code,
353 sizeof(param_in)/sizeof(param_in[0]), param_in, blocksize, &buf[bytesread], 1)) != ERROR_OK)
360 bytesread += blocksize;
366 int mips32_pracc_read_u32(mips_ejtag_t *ejtag_info, u32 addr, u32 *buf)
370 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
371 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
372 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
373 MIPS32_SW(8,0,15), /* sw $8,($15) */
375 MIPS32_LW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), //load R8 @ param_in[0] = address
377 MIPS32_LW(8,0,8), /* lw $8,0($8), Load $8 with the word @mem[$8] */
378 MIPS32_SW(8,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_OUT),15), /* sw $8,0($9) */
380 MIPS32_LW(8,0,15), /* lw $8,($15) */
381 MIPS32_B(NEG16(9)), //was 17 /* b start */
382 MIPS32_MFC0(15,31,0), //this instruction will be executed (MIPS executes instruction after jump) /* move COP0 DeSave to $15 */
386 int retval = ERROR_OK;
391 if ((retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code,
392 sizeof(param_in)/sizeof(param_in[0]), param_in, sizeof(u32), buf, 1)) != ERROR_OK)
400 int mips32_pracc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *buf)
404 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
405 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
406 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
407 MIPS32_SW(8,0,15), /* sw $8,($15) */
408 MIPS32_SW(9,0,15), /* sw $9,($15) */
409 MIPS32_SW(10,0,15), /* sw $10,($15) */
410 MIPS32_SW(11,0,15), /* sw $11,($15) */
412 MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
413 MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
414 MIPS32_LW(9,0,8), /* $9=mem[$8]; read addr */
415 MIPS32_LW(10,4,8), /* $10=mem[$8+4]; read count */
416 MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11=MIPS32_PRACC_PARAM_OUT */
417 MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)),
420 MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
423 MIPS32_LHU(8,0,9), /* lw $8,0($9), Load $8 with the halfword @mem[$9] */
424 MIPS32_SW(8,0,11), /* sw $8,0($11) */
426 MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
427 MIPS32_ADDI(9,9,2), /* $9+=2 */
428 MIPS32_ADDI(11,11,4), /* $11+=4 */
430 MIPS32_B(NEG16(9)), /* b loop */
433 MIPS32_LW(11,0,15), /* lw $11,($15) */
434 MIPS32_LW(10,0,15), /* lw $10,($15) */
435 MIPS32_LW(9,0,15), /* lw $9,($15) */
436 MIPS32_LW(8,0,15), /* lw $8,($15) */
437 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
439 MIPS32_B(NEG16(31)), /* b start */
443 // /* TODO remove array */
444 u32 param_out[count];
461 param_in[1] = blocksize;
463 mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
464 sizeof(param_in)/sizeof(param_in[0]), param_in, count, param_out, 1);
466 // count -= blocksize;
467 // addr += blocksize;
468 // bytesread += blocksize;
471 for (i = 0; i < count; i++)
473 buf[i] = param_out[i];
479 int mips32_pracc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *buf)
483 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
484 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
485 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
486 MIPS32_SW(8,0,15), /* sw $8,($15) */
487 MIPS32_SW(9,0,15), /* sw $9,($15) */
488 MIPS32_SW(10,0,15), /* sw $10,($15) */
489 MIPS32_SW(11,0,15), /* sw $11,($15) */
491 MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
492 MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
493 MIPS32_LW(9,0,8), /* $9=mem[$8]; read addr */
494 MIPS32_LW(10,4,8), /* $10=mem[$8+4]; read count */
495 MIPS32_LUI(11,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $11=MIPS32_PRACC_PARAM_OUT */
496 MIPS32_ORI(11,11,LOWER16(MIPS32_PRACC_PARAM_OUT)),
499 MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
502 MIPS32_LBU(8,0,9), /* lw $8,0($9), Load t4 with the byte @mem[t1] */
503 MIPS32_SW(8,0,11), /* sw $8,0($11) */
505 MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
506 MIPS32_ADDI(9,9,1), /* $9+=1 */
507 MIPS32_ADDI(11,11,4), /* $11+=4 */
509 MIPS32_B(NEG16(9)), /* b loop */
512 MIPS32_LW(11,0,15), /* lw $11,($15) */
513 MIPS32_LW(10,0,15), /* lw $10,($15) */
514 MIPS32_LW(9,0,15), /* lw $9,($15) */
515 MIPS32_LW(8,0,15), /* lw $8,($15) */
516 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
518 MIPS32_B(NEG16(31)), /* b start */
522 // /* TODO remove array */
523 u32 param_out[count];
540 param_in[1] = blocksize;
542 mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
543 sizeof(param_in)/sizeof(param_in[0]), param_in, count, param_out, 1);
545 // count -= blocksize;
546 // addr += blocksize;
547 // bytesread += blocksize;
550 for (i = 0; i < count; i++)
552 buf[i] = param_out[i];
558 int mips32_pracc_write_mem(mips_ejtag_t *ejtag_info, u32 addr, int size, int count, void *buf)
563 return mips32_pracc_write_mem8(ejtag_info, addr, count, (u8*)buf);
565 return mips32_pracc_write_mem16(ejtag_info, addr, count,(u16*)buf);
568 return mips32_pracc_write_u32(ejtag_info, addr, (u32*)buf);
570 return mips32_pracc_write_mem32(ejtag_info, addr, count, (u32*)buf);
576 int mips32_pracc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *buf)
579 //NC: use destination pointer as loop counter (last address is in $10)
582 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
583 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
584 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
585 MIPS32_SW(8,0,15), /* sw $8,($15) */
586 MIPS32_SW(9,0,15), /* sw $9,($15) */
587 MIPS32_SW(10,0,15), /* sw $10,($15) */
588 MIPS32_SW(11,0,15), /* sw $11,($15) */
590 MIPS32_ADDI(8,15,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)), //$8= MIPS32_PRACC_PARAM_IN
591 MIPS32_LW(9,0,8), /* Load write addr to $9 */
592 MIPS32_LW(10,4,8), //last address /* Load write count to $10 */
593 MIPS32_ADDI(8,8,8), // $8+=8 beginning of data
596 MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
597 MIPS32_SW(11,0,9), /* sw $11,0($9) */
599 MIPS32_ADDI(9,9,4), /* $9+=4 */
600 MIPS32_BNE(10,9,NEG16(4)), //was 9 BNE $10, 9, loop /* b loop */
601 MIPS32_ADDI(8,8,4), //this instruction is part of the loop (one delay slot)! /* $8+=4 */
603 MIPS32_LW(11,0,15), /* lw $11,($15) */
604 MIPS32_LW(10,0,15), /* lw $10,($15) */
605 MIPS32_LW(9,0,15), /* lw $9,($15) */
606 MIPS32_LW(8,0,15), /* lw $8,($15) */
607 MIPS32_B(NEG16(21)), //was 30 /* b start */
608 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
609 MIPS32_NOP, //this one will not be executed
612 /* TODO remove array */
613 u32 param_in[count+2];
615 param_in[1] = addr + count * sizeof(u32); //last address
617 memcpy(¶m_in[2], buf, count * sizeof(u32));
619 mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
620 sizeof(param_in)/sizeof(param_in[0]),param_in, 0, NULL, 1);
625 int mips32_pracc_write_u32(mips_ejtag_t *ejtag_info, u32 addr, u32 *buf)
629 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
630 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
631 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
632 MIPS32_SW(8,0,15), /* sw $8,($15) */
633 MIPS32_SW(9,0,15), /* sw $9,($15) */
635 MIPS32_LW(8,NEG16((MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN)-4), 15), //load R8 @ param_in[1] = data
636 MIPS32_LW(9,NEG16(MIPS32_PRACC_STACK-MIPS32_PRACC_PARAM_IN), 15), //load R9 @ param_in[0] = address
638 MIPS32_SW(8,0,9), /* sw $8,0($9) */
640 MIPS32_LW(9,0,15), /* lw $9,($15) */
641 MIPS32_LW(8,0,15), /* lw $8,($15) */
642 MIPS32_B(NEG16(11)), /* b start */
643 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
647 /* TODO remove array */
652 mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
653 sizeof(param_in)/sizeof(param_in[0]),param_in, 0, NULL, 1);
658 int mips32_pracc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *buf)
662 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
663 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
664 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
665 MIPS32_SW(8,0,15), /* sw $8,($15) */
666 MIPS32_SW(9,0,15), /* sw $9,($15) */
667 MIPS32_SW(10,0,15), /* sw $10,($15) */
668 MIPS32_SW(11,0,15), /* sw $11,($15) */
670 MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
671 MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
672 MIPS32_LW(9,0,8), /* Load write addr to $9 */
673 MIPS32_LW(10,4,8), /* Load write count to $10 */
674 MIPS32_ADDI(8,8,8), /* $8+=8 */
677 MIPS32_BEQ(0,10,9), /* beq $0, $10, end */
680 MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
681 MIPS32_SH(11,0,9), /* sh $11,0($9) */
683 MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
684 MIPS32_ADDI(9,9,2), /* $9+=2 */
685 MIPS32_ADDI(8,8,4), /* $8+=4 */
688 MIPS32_B(NEG16(9)), /* b loop */
691 MIPS32_LW(11,0,15), /* lw $11,($15) */
692 MIPS32_LW(10,0,15), /* lw $10,($15) */
693 MIPS32_LW(9,0,15), /* lw $9,($15) */
694 MIPS32_LW(8,0,15), /* lw $8,($15) */
695 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
697 MIPS32_B(NEG16(30)), /* b start */
701 /* TODO remove array */
702 u32 param_in[count+2];
707 for (i = 0; i < count; i++)
709 param_in[i+2] = buf[i];
712 mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
713 sizeof(param_in)/sizeof(param_in[0]), param_in, 0, NULL, 1);
718 int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *buf)
722 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
723 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
724 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
725 MIPS32_SW(8,0,15), /* sw $8,($15) */
726 MIPS32_SW(9,0,15), /* sw $9,($15) */
727 MIPS32_SW(10,0,15), /* sw $10,($15) */
728 MIPS32_SW(11,0,15), /* sw $11,($15) */
730 MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $8 = MIPS32_PRACC_PARAM_IN */
731 MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
732 MIPS32_LW(9,0,8), /* Load write addr to $9 */
733 MIPS32_LW(10,4,8), /* Load write count to $10 */
734 MIPS32_ADDI(8,8,8), /* $8+=8 */
737 MIPS32_BEQ(0,10,9), /* beq $0, $10, end */
740 MIPS32_LW(11,0,8), /* lw $11,0($8), Load $11 with the word @mem[$8] */
741 MIPS32_SB(11,0,9), /* sb $11,0($9) */
743 MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
744 MIPS32_ADDI(9,9,1), /* $9+=1 */
745 MIPS32_ADDI(8,8,4), /* $8+=4 */
748 MIPS32_B(NEG16(9)), /* b loop */
751 MIPS32_LW(11,0,15), /* lw $11,($15) */
752 MIPS32_LW(10,0,15), /* lw $10,($15) */
753 MIPS32_LW(9,0,15), /* lw $9,($15) */
754 MIPS32_LW(8,0,15), /* lw $8,($15) */
755 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
757 MIPS32_B(NEG16(30)), /* b start */
761 /* TODO remove array */
762 u32 param_in[count+2];
768 for (i = 0; i < count; i++)
770 param_in[i+2] = buf[i];
773 retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
774 sizeof(param_in)/sizeof(param_in[0]), param_in, 0, NULL, 1);
779 int mips32_pracc_write_regs(mips_ejtag_t *ejtag_info, u32 *regs)
783 MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $2 = MIPS32_PRACC_PARAM_IN */
784 MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_IN)),
785 MIPS32_LW(1,1*4,2), /* lw $1,1*4($2) */
786 MIPS32_LW(15,15*4,2), /* lw $15,15*4($2) */
787 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
788 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
789 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
790 MIPS32_SW(1,0,15), /* sw $1,($15) */
791 MIPS32_LUI(1,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $1 = MIPS32_PRACC_PARAM_IN */
792 MIPS32_ORI(1,1,LOWER16(MIPS32_PRACC_PARAM_IN)),
793 MIPS32_LW(3,3*4,1), /* lw $3,3*4($1) */
794 MIPS32_LW(4,4*4,1), /* lw $4,4*4($1) */
795 MIPS32_LW(5,5*4,1), /* lw $5,5*4($1) */
796 MIPS32_LW(6,6*4,1), /* lw $6,6*4($1) */
797 MIPS32_LW(7,7*4,1), /* lw $7,7*4($1) */
798 MIPS32_LW(8,8*4,1), /* lw $8,8*4($1) */
799 MIPS32_LW(9,9*4,1), /* lw $9,9*4($1) */
800 MIPS32_LW(10,10*4,1), /* lw $10,10*4($1) */
801 MIPS32_LW(11,11*4,1), /* lw $11,11*4($1) */
802 MIPS32_LW(12,12*4,1), /* lw $12,12*4($1) */
803 MIPS32_LW(13,13*4,1), /* lw $13,13*4($1) */
804 MIPS32_LW(14,14*4,1), /* lw $14,14*4($1) */
805 MIPS32_LW(16,16*4,1), /* lw $16,16*4($1) */
806 MIPS32_LW(17,17*4,1), /* lw $17,17*4($1) */
807 MIPS32_LW(18,18*4,1), /* lw $18,18*4($1) */
808 MIPS32_LW(19,19*4,1), /* lw $19,19*4($1) */
809 MIPS32_LW(20,20*4,1), /* lw $20,20*4($1) */
810 MIPS32_LW(21,21*4,1), /* lw $21,21*4($1) */
811 MIPS32_LW(22,22*4,1), /* lw $22,22*4($1) */
812 MIPS32_LW(23,23*4,1), /* lw $23,23*4($1) */
813 MIPS32_LW(24,24*4,1), /* lw $24,24*4($1) */
814 MIPS32_LW(25,25*4,1), /* lw $25,25*4($1) */
815 MIPS32_LW(26,26*4,1), /* lw $26,26*4($1) */
816 MIPS32_LW(27,27*4,1), /* lw $27,27*4($1) */
817 MIPS32_LW(28,28*4,1), /* lw $28,28*4($1) */
818 MIPS32_LW(29,29*4,1), /* lw $29,29*4($1) */
819 MIPS32_LW(30,30*4,1), /* lw $30,30*4($1) */
820 MIPS32_LW(31,31*4,1), /* lw $31,31*4($1) */
822 MIPS32_LW(2,32*4,1), /* lw $2,32*4($1) */
823 MIPS32_MTC0(2,12,0), /* move $2 to status */
824 MIPS32_LW(2,33*4,1), /* lw $2,33*4($1) */
825 MIPS32_MTLO(2), /* move $2 to lo */
826 MIPS32_LW(2,34*4,1), /* lw $2,34*4($1) */
827 MIPS32_MTHI(2), /* move $2 to hi */
828 MIPS32_LW(2,35*4,1), /* lw $2,35*4($1) */
829 MIPS32_MTC0(2,8,0), /* move $2 to badvaddr */
830 MIPS32_LW(2,36*4,1), /* lw $2,36*4($1) */
831 MIPS32_MTC0(2,13,0), /* move $2 to cause*/
832 MIPS32_LW(2,37*4,1), /* lw $2,37*4($1) */
833 MIPS32_MTC0(2,24,0), /* move $2 to pc */
835 MIPS32_LW(2,2*4,1), /* lw $2,2*4($1) */
836 MIPS32_LW(1,0,15), /* lw $1,($15) */
837 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
839 MIPS32_B(NEG16(55)), /* b start */
845 retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
846 38, regs, 0, NULL, 1);
851 int mips32_pracc_read_regs(mips_ejtag_t *ejtag_info, u32 *regs)
855 MIPS32_MTC0(2,31,0), /* move $2 to COP0 DeSave */
856 MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $2 = MIPS32_PRACC_PARAM_OUT */
857 MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_OUT)),
858 MIPS32_SW(0,0*4,2), /* sw $0,0*4($2) */
859 MIPS32_SW(1,1*4,2), /* sw $1,1*4($2) */
860 MIPS32_SW(15,15*4,2), /* sw $15,15*4($2) */
861 MIPS32_MFC0(2,31,0), /* move COP0 DeSave to $2 */
862 MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
863 MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)), /* $15 = MIPS32_PRACC_STACK */
864 MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
865 MIPS32_SW(1,0,15), /* sw $1,($15) */
866 MIPS32_SW(2,0,15), /* sw $2,($15) */
867 MIPS32_LUI(1,UPPER16(MIPS32_PRACC_PARAM_OUT)), /* $1 = MIPS32_PRACC_PARAM_OUT */
868 MIPS32_ORI(1,1,LOWER16(MIPS32_PRACC_PARAM_OUT)),
869 MIPS32_SW(2,2*4,1), /* sw $2,2*4($1) */
870 MIPS32_SW(3,3*4,1), /* sw $3,3*4($1) */
871 MIPS32_SW(4,4*4,1), /* sw $4,4*4($1) */
872 MIPS32_SW(5,5*4,1), /* sw $5,5*4($1) */
873 MIPS32_SW(6,6*4,1), /* sw $6,6*4($1) */
874 MIPS32_SW(7,7*4,1), /* sw $7,7*4($1) */
875 MIPS32_SW(8,8*4,1), /* sw $8,8*4($1) */
876 MIPS32_SW(9,9*4,1), /* sw $9,9*4($1) */
877 MIPS32_SW(10,10*4,1), /* sw $10,10*4($1) */
878 MIPS32_SW(11,11*4,1), /* sw $11,11*4($1) */
879 MIPS32_SW(12,12*4,1), /* sw $12,12*4($1) */
880 MIPS32_SW(13,13*4,1), /* sw $13,13*4($1) */
881 MIPS32_SW(14,14*4,1), /* sw $14,14*4($1) */
882 MIPS32_SW(16,16*4,1), /* sw $16,16*4($1) */
883 MIPS32_SW(17,17*4,1), /* sw $17,17*4($1) */
884 MIPS32_SW(18,18*4,1), /* sw $18,18*4($1) */
885 MIPS32_SW(19,19*4,1), /* sw $19,19*4($1) */
886 MIPS32_SW(20,20*4,1), /* sw $20,20*4($1) */
887 MIPS32_SW(21,21*4,1), /* sw $21,21*4($1) */
888 MIPS32_SW(22,22*4,1), /* sw $22,22*4($1) */
889 MIPS32_SW(23,23*4,1), /* sw $23,23*4($1) */
890 MIPS32_SW(24,24*4,1), /* sw $24,24*4($1) */
891 MIPS32_SW(25,25*4,1), /* sw $25,25*4($1) */
892 MIPS32_SW(26,26*4,1), /* sw $26,26*4($1) */
893 MIPS32_SW(27,27*4,1), /* sw $27,27*4($1) */
894 MIPS32_SW(28,28*4,1), /* sw $28,28*4($1) */
895 MIPS32_SW(29,29*4,1), /* sw $29,29*4($1) */
896 MIPS32_SW(30,30*4,1), /* sw $30,30*4($1) */
897 MIPS32_SW(31,31*4,1), /* sw $31,31*4($1) */
899 MIPS32_MFC0(2,12,0), /* move status to $2 */
900 MIPS32_SW(2,32*4,1), /* sw $2,32*4($1) */
901 MIPS32_MFLO(2), /* move lo to $2 */
902 MIPS32_SW(2,33*4,1), /* sw $2,33*4($1) */
903 MIPS32_MFHI(2), /* move hi to $2 */
904 MIPS32_SW(2,34*4,1), /* sw $2,34*4($1) */
905 MIPS32_MFC0(2,8,0), /* move badvaddr to $2 */
906 MIPS32_SW(2,35*4,1), /* sw $2,35*4($1) */
907 MIPS32_MFC0(2,13,0), /* move cause to $2 */
908 MIPS32_SW(2,36*4,1), /* sw $2,36*4($1) */
909 MIPS32_MFC0(2,24,0), /* move pc to $2 */
910 MIPS32_SW(2,37*4,1), /* sw $2,37*4($1) */
912 MIPS32_LW(2,0,15), /* lw $2,($15) */
913 MIPS32_LW(1,0,15), /* lw $1,($15) */
914 MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
916 MIPS32_B(NEG16(60)), /* b start */
922 retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
923 0, NULL, 38, regs, 1);