* *
* Copyright (C) 2008 by David T.L. Wong *
* *
+ * Copyright (C) 2009 by David N. Claffey <dnclaffey@gmail.com> *
+ * *
* 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 *
For example:
-
LW $2, ($5 +10)
B foo
LW $1, ($2 +100)
Nico Coesel
*/
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
data = ctx->local_oparam[offset];
}
else if ((address >= MIPS32_PRACC_TEXT)
- && (address <= MIPS32_PRACC_TEXT + ctx->code_len*4))
+ && (address <= MIPS32_PRACC_TEXT + ctx->code_len * 4))
{
offset = (address - MIPS32_PRACC_TEXT) / 4;
data = ctx->code[offset];
* to start of debug vector */
data = 0;
- LOG_ERROR("Error reading unexpected address %8.8" PRIx32 "", address);
+ LOG_ERROR("Error reading unexpected address 0x%8.8" PRIx32 "", address);
return ERROR_JTAG_DEVICE_ERROR;
}
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);
jtag_add_clocks(5);
jtag_execute_queue();
-
return ERROR_OK;
}
}
else
{
- LOG_ERROR("Error writing unexpected address %8.8" PRIx32 "", address);
+ LOG_ERROR("Error writing unexpected address 0x%8.8" PRIx32 "", address);
return ERROR_JTAG_DEVICE_ERROR;
}
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &address);
-// printf("Adres: %.8x\n", address);
-
/* Check for read or write */
if (ejtag_ctrl & EJTAG_CTRL_PRNW)
{
if ((retval = mips32_pracc_exec_read(&ctx, address)) != ERROR_OK)
return retval;
-
}
if (cycle == 0)
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_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_ADDI(9,9,4), /* $1 += 4 */
MIPS32_ADDI(11,11,4), /* $11 += 4 */
- MIPS32_NOP,
- MIPS32_B(NEG16(9)), /* b loop */
+ 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 */
- MIPS32_NOP,
- MIPS32_B(NEG16(31)), /* b start */
- MIPS32_NOP,
};
int retval = ERROR_OK;
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)
+ if ((retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
+ ARRAY_SIZE(param_in), param_in, blocksize, &buf[bytesread], 1)) != ERROR_OK)
{
return retval;
}
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,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), /* sw $8,0($9) */
+ 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)), //was 17 /* b start */
- MIPS32_MFC0(15,31,0), //this instruction will be executed (MIPS executes instruction after jump) /* move COP0 DeSave to $15 */
- MIPS32_NOP,
+ MIPS32_B(NEG16(9)), /* b start */
+ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
};
int retval = ERROR_OK;
param_in[0] = addr;
- if ((retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code,
- sizeof(param_in)/sizeof(param_in[0]), param_in, sizeof(uint32_t), buf, 1)) != ERROR_OK)
+ if ((retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code,
+ ARRAY_SIZE(param_in), param_in, 1, buf, 1)) != ERROR_OK)
{
return retval;
}
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_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_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,
- MIPS32_B(NEG16(9)), /* 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_MFC0(15,31,0), /* move COP0 DeSave to $15 */
- MIPS32_NOP,
- MIPS32_B(NEG16(31)), /* b start */
- MIPS32_NOP,
+ MIPS32_B(NEG16(27)), /* b start */
+ MIPS32_MFC0(15,30,0), /* move COP0 DeSave to $15 */
};
-// /* TODO remove array */
- uint32_t param_out[count];
+ /* TODO remove array */
+ uint32_t *param_out = malloc(count * sizeof(uint32_t));
int i;
// int retval;
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);
+ mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ ARRAY_SIZE(param_in), param_in, count, param_out, 1);
// count -= blocksize;
// addr += blocksize;
buf[i] = param_out[i];
}
+ free(param_out);
+
return ERROR_OK;
}
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_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_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_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 */
- MIPS32_NOP,
- MIPS32_B(NEG16(31)), /* b start */
- MIPS32_NOP,
};
-// /* TODO remove array */
- uint32_t param_out[count];
+ /* TODO remove array */
+ uint32_t *param_out = malloc(count * sizeof(uint32_t));
int i;
// int retval;
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);
+ mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ ARRAY_SIZE(param_in), param_in, count, param_out, 1);
// count -= blocksize;
// addr += blocksize;
buf[i] = param_out[i];
}
+ free(param_out);
+
return ERROR_OK;
}
int mips32_pracc_write_mem32(struct mips_ejtag *ejtag_info, uint32_t addr, int count, uint32_t *buf)
{
-
-//NC: use destination pointer as loop counter (last address is in $10)
static const uint32_t code[] = {
/* start: */
MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
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_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), //last address /* Load write count to $10 */
- MIPS32_ADDI(8,8,8), // $8 += 8 beginning of data
+ MIPS32_LW(10,4,8), /* Load write count to $10 */
+ MIPS32_ADDI(8,8,8), /* $8 += 8 beginning of data */
-//loop:
+ /* 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)), //was 9 BNE $10, 9, loop /* b loop */
- MIPS32_ADDI(8,8,4), //this instruction is part of the loop (one delay slot)! /* $8 += 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)), //was 30 /* b start */
+ MIPS32_B(NEG16(21)), /* b start */
MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
- MIPS32_NOP, //this one will not be executed
};
/* TODO remove array */
- uint32_t param_in[count + 2];
+ uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
param_in[0] = addr;
- param_in[1] = addr + count * sizeof(uint32_t); //last address
+ param_in[1] = addr + (count * sizeof(uint32_t)); /* last address */
memcpy(¶m_in[2], buf, count * sizeof(uint32_t));
- mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
- sizeof(param_in)/sizeof(param_in[0]),param_in, 0, NULL, 1);
+ mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ count + 2, param_in, 0, NULL, 1);
+
+ free(param_in);
return ERROR_OK;
}
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_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 */
- MIPS32_NOP,
+ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
};
/* TODO remove array */
param_in[0] = addr;
param_in[1] = *buf;
- mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
- sizeof(param_in)/sizeof(param_in[0]),param_in, 0, NULL, 1);
+ mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ ARRAY_SIZE(param_in), param_in, 0, NULL, 1);
return ERROR_OK;
}
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_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_ADDI(9,9,2), /* $9 += 2 */
MIPS32_ADDI(8,8,4), /* $8 += 4 */
- MIPS32_NOP,
- MIPS32_B(NEG16(9)), /* b loop */
+ 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 */
- MIPS32_NOP,
- MIPS32_B(NEG16(30)), /* b start */
- MIPS32_NOP,
};
/* TODO remove array */
- uint32_t param_in[count + 2];
+ uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
int i;
param_in[0] = addr;
param_in[1] = count;
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);
+ mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ count + 2, param_in, 0, NULL, 1);
+
+ free(param_in);
return ERROR_OK;
}
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_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_ADDI(9,9,1), /* $9 += 1 */
MIPS32_ADDI(8,8,4), /* $8 += 4 */
- MIPS32_NOP,
- MIPS32_B(NEG16(9)), /* b loop */
+ 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 */
- MIPS32_NOP,
- MIPS32_B(NEG16(30)), /* b start */
- MIPS32_NOP,
};
/* TODO remove array */
- uint32_t param_in[count + 2];
+ uint32_t *param_in = malloc((count + 2) * sizeof(uint32_t));
int retval;
int i;
param_in[0] = addr;
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);
+ retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ count + 2, param_in, 0, NULL, 1);
+
+ free(param_in);
return retval;
}
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 */
- MIPS32_NOP,
- MIPS32_B(NEG16(55)), /* b start */
- MIPS32_NOP,
};
int retval;
- retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
- 38, regs, 0, NULL, 1);
+ retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ MIPS32NUMCOREREGS, regs, 0, NULL, 1);
return retval;
}
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 */
- 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);
+ retval = mips32_pracc_exec(ejtag_info, ARRAY_SIZE(code), code, \
+ 0, NULL, MIPS32NUMCOREREGS, regs, 1);
+
+ return retval;
+}
+
+/* fastdata upload/download requires an initialized working area
+ * to load the download code; it should not be called otherwise
+ * fetch order from the fastdata area
+ * 1. start addr
+ * 2. end addr
+ * 3. data ...
+ */
+int mips32_pracc_fastdata_xfer(struct mips_ejtag *ejtag_info, struct working_area *source,
+ int write, uint32_t addr, int count, uint32_t *buf)
+{
+ uint32_t handler_code[] = {
+ /* caution when editing, table is modified below */
+ /* r15 points to the start of this code */
+ MIPS32_SW(8,MIPS32_FASTDATA_HANDLER_SIZE - 4,15),
+ MIPS32_SW(9,MIPS32_FASTDATA_HANDLER_SIZE - 8,15),
+ MIPS32_SW(10,MIPS32_FASTDATA_HANDLER_SIZE - 12,15),
+ MIPS32_SW(11,MIPS32_FASTDATA_HANDLER_SIZE - 16,15),
+ /* start of fastdata area in t0 */
+ MIPS32_LUI(8,UPPER16(MIPS32_PRACC_FASTDATA_AREA)),
+ MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_FASTDATA_AREA)),
+ MIPS32_LW(9,0,8), /* start addr in t1 */
+ MIPS32_LW(10,0,8), /* end addr to t2 */
+ /* loop: */
+ /* 8 */ MIPS32_LW(11,0,0), /* lw t3,[t8 | r9] */
+ /* 9 */ MIPS32_SW(11,0,0), /* sw t3,[r9 | r8] */
+ MIPS32_BNE(10,9,NEG16(3)), /* bne $t2,t1,loop */
+ MIPS32_ADDI(9,9,4), /* addi t1,t1,4 */
+
+ MIPS32_LW(8,MIPS32_FASTDATA_HANDLER_SIZE - 4,15),
+ MIPS32_LW(9,MIPS32_FASTDATA_HANDLER_SIZE - 8,15),
+ MIPS32_LW(10,MIPS32_FASTDATA_HANDLER_SIZE - 12,15),
+ MIPS32_LW(11,MIPS32_FASTDATA_HANDLER_SIZE - 16,15),
+
+ MIPS32_LUI(15,UPPER16(MIPS32_PRACC_TEXT)),
+ MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_TEXT)),
+ MIPS32_JR(15), /* jr start */
+ MIPS32_MFC0(15,31,0), /* move COP0 DeSave to $15 */
+ };
+
+ uint32_t jmp_code[] = {
+ MIPS32_MTC0(15,31,0), /* move $15 to COP0 DeSave */
+ /* 1 */ MIPS32_LUI(15,0), /* addr of working area added below */
+ /* 2 */ MIPS32_ORI(15,15,0), /* addr of working area added below */
+ MIPS32_JR(15), /* jump to ram program */
+ MIPS32_NOP,
+ };
+
+ int retval, i;
+ uint32_t val, ejtag_ctrl, address;
+
+ if (source->size < MIPS32_FASTDATA_HANDLER_SIZE)
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+
+ if (write)
+ {
+ handler_code[8] = MIPS32_LW(11,0,8); /* load data from probe at fastdata area */
+ handler_code[9] = MIPS32_SW(11,0,9); /* store data to RAM @ r9 */
+ }
+ else
+ {
+ handler_code[8] = MIPS32_LW(11,0,9); /* load data from RAM @ r9 */
+ handler_code[9] = MIPS32_SW(11,0,8); /* store data to probe at fastdata area */
+ }
+
+ /* write program into RAM */
+ mips32_pracc_write_mem32(ejtag_info, source->address, ARRAY_SIZE(handler_code), handler_code);
+
+ /* quick verify RAM is working */
+ mips32_pracc_read_u32(ejtag_info, source->address, &val);
+ if (val != handler_code[0])
+ {
+ LOG_ERROR("fastdata handler verify failed\n");
+ return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ }
+
+ LOG_INFO("%s using 0x%.8x for write handler\n", __func__, source->address);
+
+ jmp_code[1] |= UPPER16(source->address);
+ jmp_code[2] |= LOWER16(source->address);
+
+ for (i = 0; i < (int) ARRAY_SIZE(jmp_code); i++)
+ {
+ if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
+ return retval;
+
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
+ mips_ejtag_drscan_32(ejtag_info, &jmp_code[i]);
+
+ /* Clear the access pending bit (let the processor eat!) */
+ ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
+ mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
+ }
+
+ if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
+ return retval;
+
+ /* next fetch to dmseg should be in FASTDATA_AREA, check */
+ address = 0;
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
+ mips_ejtag_drscan_32(ejtag_info, &address);
+
+ if (address != MIPS32_PRACC_FASTDATA_AREA)
+ return ERROR_FAIL;
+
+ /* Send the load start address */
+ val = addr;
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_FASTDATA, NULL);
+ mips_ejtag_fastdata_scan(ejtag_info, 1, &val);
+
+ /* Send the load end address */
+ val = addr + (count - 1) * 4;
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_FASTDATA, NULL);
+ mips_ejtag_fastdata_scan(ejtag_info, 1, &val);
+
+ for (i = 0; i < count; i++)
+ {
+ /* Send the data out using fastdata (clears the access pending bit) */
+ if ((retval = mips_ejtag_fastdata_scan(ejtag_info, write, buf++)) != ERROR_OK)
+ return retval;
+ }
+
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ LOG_ERROR("fastdata load failed");
+ return retval;
+ }
+
+ if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
+ return retval;
+
+ address = 0;
+ mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
+ mips_ejtag_drscan_32(ejtag_info, &address);
+
+ if (address != MIPS32_PRACC_TEXT)
+ LOG_ERROR("mini program did not return to start\n");
return retval;
}
Code Review / openocd.git / blobdiff