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riscv-openocd/src/target/mips32_pracc.c

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/***************************************************************************
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* Copyright (C) 2008 by David T.L. Wong *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* 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. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "log.h"
#include "mips32.h"
#include "mips32_pracc.h"
typedef struct {
u32 *local_iparam;
int num_iparam;
u32 *local_oparam;
int num_oparam;
u32 *code;
int code_len;
u32 stack[32];
int stack_offset;
mips_ejtag_t *ejtag_info;
} mips32_pracc_context;
static int wait_for_pracc_rw(mips_ejtag_t *ejtag_info, u32 *ctrl)
{
u32 ejtag_ctrl;
while (1)
{
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
if (ejtag_ctrl & EJTAG_CTRL_PRACC)
break;
LOG_DEBUG("DEBUGMODULE: No memory access in progress!\n");
return ERROR_JTAG_DEVICE_ERROR;
}
*ctrl = ejtag_ctrl;
return ERROR_OK;
}
static int mips32_pracc_exec_read(mips32_pracc_context *ctx, u32 address)
{
mips_ejtag_t *ejtag_info = ctx->ejtag_info;
int offset;
u32 ejtag_ctrl, data;
if ((address >= MIPS32_PRACC_PARAM_IN)
&& (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4))
{
offset = (address - MIPS32_PRACC_PARAM_IN) / 4;
data = ctx->local_iparam[offset];
}
else if ((address >= MIPS32_PRACC_PARAM_OUT)
&& (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4))
{
offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
data = ctx->local_oparam[offset];
}
else if ((address >= MIPS32_PRACC_TEXT)
&& (address <= MIPS32_PRACC_TEXT + ctx->code_len*4))
{
offset = (address - MIPS32_PRACC_TEXT) / 4;
data = ctx->code[offset];
}
else if (address == MIPS32_PRACC_STACK)
{
/* save to our debug stack */
data = ctx->stack[--ctx->stack_offset];
}
else
{
/* TODO: send JMP 0xFF200000 instruction. Hopefully processor jump back
* to start of debug vector */
data = 0;
LOG_ERROR("Error reading unexpected address");
return ERROR_JTAG_DEVICE_ERROR;
}
/* Send the data out */
mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ctx->ejtag_info, &data);
/* Clear the access pending bit (let the processor eat!) */
ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
return ERROR_OK;
}
static int mips32_pracc_exec_write(mips32_pracc_context *ctx, u32 address)
{
u32 ejtag_ctrl,data;
int offset;
mips_ejtag_t *ejtag_info = ctx->ejtag_info;
mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ctx->ejtag_info, &data);
/* Clear access pending bit */
ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
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 )
&& (address <= MIPS32_PRACC_PARAM_OUT + ctx->num_oparam * 4))
{
offset = (address - MIPS32_PRACC_PARAM_OUT) / 4;
ctx->local_oparam[offset] = data;
}
else if (address == MIPS32_PRACC_STACK)
{
/* save data onto our stack */
ctx->stack[ctx->stack_offset++] = data;
}
else
{
LOG_ERROR("Error writing unexpected address");
return ERROR_JTAG_DEVICE_ERROR;
}
return ERROR_OK;
}
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)
{
u32 ejtag_ctrl;
u32 address, data;
mips32_pracc_context ctx;
int retval;
int pass = 0;
ctx.local_iparam = param_in;
ctx.local_oparam = param_out;
ctx.num_iparam = num_param_in;
ctx.num_oparam = num_param_out;
ctx.code = code;
ctx.code_len = code_len;
ctx.ejtag_info = ejtag_info;
ctx.stack_offset = 0;
while (1)
{
if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
return retval;
address = data = 0;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &address);
/* Check for read or write */
if (ejtag_ctrl & EJTAG_CTRL_PRNW)
{
if ((retval = mips32_pracc_exec_write(&ctx, address)) != ERROR_OK)
return retval;
}
else
{
/* Check to see if its reading at the debug vector. The first pass through
* the module is always read at the vector, so the first one we allow. When
* the second read from the vector occurs we are done and just exit. */
if ((address == MIPS32_PRACC_TEXT) && (pass++))
{
break;
}
if ((retval = mips32_pracc_exec_read(&ctx, address)) != ERROR_OK)
return retval;
}
if (cycle == 0)
break;
}
/* stack sanity check */
if (ctx.stack_offset != 0)
{
LOG_DEBUG("Pracc Stack not zero");
}
return ERROR_OK;
}
int mips32_pracc_read_mem(mips_ejtag_t *ejtag_info, u32 addr, int size, int count, void *buf)
{
switch (size)
{
case 1:
return mips32_pracc_read_mem8(ejtag_info, addr, count, (u8*)buf);
case 2:
return mips32_pracc_read_mem16(ejtag_info, addr, count, (u16*)buf);
case 4:
return mips32_pracc_read_mem32(ejtag_info, addr, count, (u32*)buf);
}
return ERROR_OK;
}
int mips32_pracc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *buf)
{
u32 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 $10,($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)),
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
MIPS32_NOP,
MIPS32_LW(12,0,9), /* lw $12,0($9), Load $12 with the word @mem[$9] */
MIPS32_SW(12,0,11), /* sw $12,0($11) */
MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
MIPS32_ADDI(9,9,4), /* $1+=4 */
MIPS32_ADDI(11,11,4), /* $11+=4 */
MIPS32_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(31)), /* b start */
MIPS32_NOP,
};
int retval=ERROR_OK;
int blocksize;
int bytesread;
u32 param_in[2];
bytesread = 0;
while (count > 0)
{
blocksize = count;
if (count > 0x400)
blocksize = 0x400;
param_in[0] = addr;
param_in[1] = blocksize;
if ((retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code,
sizeof(param_in)/sizeof(param_in[0]), param_in, blocksize, &buf[bytesread], 1)) != ERROR_OK)
{
return retval;
}
count -= blocksize;
addr += blocksize;
bytesread += blocksize;
}
return retval;
}
int mips32_pracc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *buf)
{
u32 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 $10,($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)),
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
MIPS32_NOP,
MIPS32_LHU(12,0,9), /* lw $12,0($9), Load $12 with the halfword @mem[$9] */
MIPS32_SW(12,0,11), /* sw $12,0($11) */
MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
MIPS32_ADDI(9,9,2), /* $9+=2 */
MIPS32_ADDI(11,11,4), /* $11+=4 */
MIPS32_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(31)), /* b start */
MIPS32_NOP,
};
// /* TODO remove array */
u32 param_out[count];
int i;
// int retval;
int blocksize;
int bytesread;
u32 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, sizeof(code)/sizeof(code[0]), code, \
sizeof(param_in)/sizeof(param_in[0]), param_in, count, param_out, 1);
// count -= blocksize;
// addr += blocksize;
// bytesread += blocksize;
}
for (i = 0; i < count; i++)
{
buf[i] = param_out[i];
}
return ERROR_OK;
}
int mips32_pracc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *buf)
{
u32 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 $10,($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)),
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* beq 0, $10, end */
MIPS32_NOP,
MIPS32_LBU(12,0,9), /* lw $12,0($9), Load t4 with the byte @mem[t1] */
MIPS32_SW(12,0,11), /* sw $12,0($11) */
MIPS32_ADDI(10,10,NEG16(1)), /* $10-- */
MIPS32_ADDI(9,9,1), /* $9+=1 */
MIPS32_ADDI(11,11,4), /* $11+=4 */
MIPS32_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(31)), /* b start */
MIPS32_NOP,
};
// /* TODO remove array */
u32 param_out[count];
int i;
// int retval;
int blocksize;
int bytesread;
u32 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, sizeof(code)/sizeof(code[0]), code, \
sizeof(param_in)/sizeof(param_in[0]), param_in, count, param_out, 1);
// count -= blocksize;
// addr += blocksize;
// bytesread += blocksize;
}
for (i = 0; i < count; i++)
{
buf[i] = param_out[i];
}
return ERROR_OK;
}
int mips32_pracc_write_mem(mips_ejtag_t *ejtag_info, u32 addr, int size, int count, void *buf)
{
switch (size)
{
case 1:
return mips32_pracc_write_mem8(ejtag_info, addr, count, (u8*)buf);
case 2:
return mips32_pracc_write_mem16(ejtag_info, addr, count,(u16*)buf);
case 4:
return mips32_pracc_write_mem32(ejtag_info, addr, count, (u32*)buf);
}
return ERROR_OK;
}
int mips32_pracc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *buf)
{
u32 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 $10,($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 */
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* beq $0, $10, end */
MIPS32_NOP,
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(10,10,NEG16(1)), /* $10-- */
MIPS32_ADDI(9,9,4), /* $9+=4 */
MIPS32_ADDI(8,8,4), /* $8+=4 */
MIPS32_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(30)), /* b start */
MIPS32_NOP,
};
/* TODO remove array */
u32 param_in[count+2];
param_in[0] = addr;
param_in[1] = count;
memcpy(&param_in[2], buf, count * sizeof(u32));
mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
sizeof(param_in)/sizeof(param_in[0]),param_in, 0, NULL, 1);
return ERROR_OK;
}
int mips32_pracc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *buf)
{
u32 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 $10,($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 */
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* 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_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(30)), /* b start */
MIPS32_NOP,
};
/* TODO remove array */
u32 param_in[count+2];
int i;
param_in[0] = addr;
param_in[1] = count;
for (i = 0; i < count; i++)
{
param_in[i+2] = buf[i];
}
mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
sizeof(param_in)/sizeof(param_in[0]), param_in, 0, NULL, 1);
return ERROR_OK;
}
int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *buf)
{
u32 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 $10,($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 */
MIPS32_NOP,
/* loop: */
MIPS32_BEQ(0,10,9), /* 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_NOP,
MIPS32_B(NEG16(9)), /* b loop */
MIPS32_NOP,
/* end: */
MIPS32_LW(11,0,15), /* sw $11,($15) */
MIPS32_LW(10,0,15), /* sw $10,($15) */
MIPS32_LW(9,0,15), /* sw $9,($15) */
MIPS32_LW(8,0,15), /* sw $8,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(30)), /* b start */
MIPS32_NOP,
};
/* TODO remove array */
u32 param_in[count+2];
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, sizeof(code)/sizeof(code[0]), code, \
sizeof(param_in)/sizeof(param_in[0]), param_in, 0, NULL, 1);
return retval;
}
int mips32_pracc_write_regs(mips_ejtag_t *ejtag_info, u32 *regs)
{
/* TODO restore all core registers */
u32 code[] = {
/* start: */
MIPS32_MTC0(2,31,0), /* move $2 to COP0 DeSave */
MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $2 = MIPS32_PRACC_PARAM_IN */
MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_IN)),
/*MIPS32_LW(0,0*4,2),*/ /* lw $0,0*4($2) */
MIPS32_LW(1,1*4,2), /* lw $1,1*4($2) */
MIPS32_MFC0(2,31,0), /* move COP0 DeSave to $2 */
MIPS32_MTC0(1,31,0), /* move $1 to COP0 DeSave */
MIPS32_LUI(1,UPPER16(MIPS32_PRACC_PARAM_IN)), /* $1 = MIPS32_PRACC_PARAM_IN */
MIPS32_ORI(1,1,LOWER16(MIPS32_PRACC_PARAM_IN)),
MIPS32_LW(2,2*4,1), /* lw $2,2*4($1) */
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(15,15*4,1), /* lw $15,15*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_MFC0(1,31,0), /* move COP0 DeSave to $1 */
MIPS32_NOP,
MIPS32_B(NEG16(41)), /* b start */
MIPS32_NOP,
};
int retval;
retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
32, regs, 0, NULL, 1);
return retval;
}
int mips32_pracc_read_regs(mips_ejtag_t *ejtag_info, u32 *regs)
{
u32 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_LO(2), /* move lo to $2 */
MIPS32_SW(2,33*4,1), /* sw $2,33*4($1) */
MIPS32_HI(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 pc to $2 */
MIPS32_SW(2,37*4,1), /* sw $2,37*4($1) */
MIPS32_LW(2,0,15), /* sw $2,($15) */
MIPS32_LW(1,0,15), /* sw $1,($15) */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
MIPS32_NOP,
MIPS32_B(NEG16(60)), /* b start */
MIPS32_NOP,
};
int retval;
retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
0, NULL, 38, regs, 1);
return retval;
}
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