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tinyriscv-openocd
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- slight mips32 cleanup/reformat 

- add missing svn props

git-svn-id: svn://svn.berlios.de/openocd/trunk@1159 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
ntfreak 2008-11-12 14:53:19 +00:00
parent 3a59ff8bda
commit 8f2c1659cf
6 changed files with 142 additions and 113 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

172
src/target/mips32_dmaacc.c
View File

@ -45,40 +45,42 @@ static int ejtag_dma_read(mips_ejtag_t *ejtag_info, u32 addr, u32 *data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
begin_ejtag_dma_read:
// Setup Address
/* Setup Address */
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Read & set DSTRT
/* Initiate DMA Read & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DRWN | EJTAG_CTRL_DMA_WORD | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Read Data
/* Read Data */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, data);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
{
if (retries--) {
printf("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
goto begin_ejtag_dma_read;
} else printf("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
}
else
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
@ -89,46 +91,50 @@ static int ejtag_dma_read_h(mips_ejtag_t *ejtag_info, u32 addr, u16 *data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
begin_ejtag_dma_read_h:
// Setup Address
/* Setup Address */
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Read & set DSTRT
/* Initiate DMA Read & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DRWN | EJTAG_CTRL_DMA_HALFWORD | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Read Data
/* Read Data */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
{
if (retries--) {
printf("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
goto begin_ejtag_dma_read_h;
} else printf("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
}
else
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
// Handle the bigendian/littleendian
if ( addr & 0x2 ) *data = (v>>16)&0xffff ;
else *data = (v&0x0000ffff) ;
/* Handle the bigendian/littleendian */
if (addr & 0x2)
*data = (v >> 16) & 0xffff;
else
*data = (v & 0x0000ffff);
return ERROR_OK;
}
@ -137,49 +143,59 @@ static int ejtag_dma_read_b(mips_ejtag_t *ejtag_info, u32 addr, u8 *data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
begin_ejtag_dma_read_b:
// Setup Address
/* Setup Address */
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Read & set DSTRT
/* Initiate DMA Read & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DRWN | EJTAG_CTRL_DMA_BYTE | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Read Data
/* Read Data */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
{
if (retries--) {
printf("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ (retrying)\n", addr);
goto begin_ejtag_dma_read_b;
} else printf("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
}
else
LOG_ERROR("DMA Read Addr = %08x Data = ERROR ON READ\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
// Handle the bigendian/littleendian
switch(addr & 0x3) {
case 0: *data = v & 0xff; break;
case 1: *data = (v>>8) & 0xff; break;
case 2: *data = (v>>16) & 0xff; break;
case 3: *data = (v>>24) & 0xff; break;
switch (addr & 0x3) {
case 0:
*data = v & 0xff;
break;
case 1:
*data = (v >> 8) & 0xff;
break;
case 2:
*data = (v >> 16) & 0xff;
break;
case 3:
*data = (v >> 24) & 0xff;
break;
}
return ERROR_OK;
@ -189,41 +205,43 @@ static int ejtag_dma_write(mips_ejtag_t *ejtag_info, u32 addr, u32 data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
begin_ejtag_dma_write:
// Setup Address
/* Setup Address */
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Setup Data
/* Setup Data */
v = data;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Write & set DSTRT
/* Initiate DMA Write & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DMA_WORD | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
{
if (retries--) {
printf("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
goto begin_ejtag_dma_write;
} else printf("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
}
else
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
@ -234,46 +252,47 @@ static int ejtag_dma_write_h(mips_ejtag_t *ejtag_info, u32 addr, u32 data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
// Handle the bigendian/littleendian
/* Handle the bigendian/littleendian */
data &= 0xffff;
data |= data<<16;
data |= data << 16;
begin_ejtag_dma_write_h:
// Setup Address
/* Setup Address */
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Setup Data
/* Setup Data */
v = data;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Write & set DSTRT
/* Initiate DMA Write & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DMA_HALFWORD | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
{
if (retries--) {
printf("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
goto begin_ejtag_dma_write_h;
} else printf("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
}
else
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
@ -284,47 +303,48 @@ static int ejtag_dma_write_b(mips_ejtag_t *ejtag_info, u32 addr, u32 data)
{
u32 v;
u32 ejtag_ctrl;
int retries = RETRY_ATTEMPTS;
int retries = RETRY_ATTEMPTS;
// Handle the bigendian/littleendian
/* Handle the bigendian/littleendian */
data &= 0xff;
data |= data<<8;
data |= data<<16;
data |= data << 8;
data |= data << 16;
begin_ejtag_dma_write_b:
// Setup Address
/* Setup Address*/
v = addr;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_ADDRESS, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Setup Data
/* Setup Data */
v = data;
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_DATA, NULL);
mips_ejtag_drscan_32(ejtag_info, &v);
// Initiate DMA Write & set DSTRT
/* Initiate DMA Write & set DSTRT */
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
ejtag_ctrl = EJTAG_CTRL_DMAACC | EJTAG_CTRL_DMA_BYTE | EJTAG_CTRL_DSTRT | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
// Wait for DSTRT to Clear
/* Wait for DSTRT to Clear */
do {
ejtag_ctrl = EJTAG_CTRL_DMAACC | ejtag_info->ejtag_ctrl;
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} while(ejtag_ctrl & EJTAG_CTRL_DSTRT);
// Clear DMA & Check DERR
/* Clear DMA & Check DERR */
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_DERR)
if (ejtag_ctrl & EJTAG_CTRL_DERR)
{
if (retries--) {
printf("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE (retrying)\n", addr);
goto begin_ejtag_dma_write_b;
} else printf("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
}
else
LOG_ERROR("DMA Write Addr = %08x Data = ERROR ON WRITE\n", addr);
return ERROR_JTAG_DEVICE_ERROR;
}
@ -351,8 +371,8 @@ int mips32_dmaacc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_read(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_read(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
return retval;
}
@ -364,8 +384,8 @@ int mips32_dmaacc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_read_h(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_read_h(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
return retval;
}
@ -377,8 +397,8 @@ int mips32_dmaacc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *b
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_read_b(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_read_b(ejtag_info, addr+i*sizeof(*buf), &buf[i])) != ERROR_OK)
return retval;
}
@ -405,8 +425,8 @@ int mips32_dmaacc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_write(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_write(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
return retval;
}
@ -418,8 +438,8 @@ int mips32_dmaacc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_write_h(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_write_h(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
return retval;
}
@ -431,8 +451,8 @@ int mips32_dmaacc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *
int i;
int retval;
for(i=0; i<count; i++) {
if((retval=ejtag_dma_write_b(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
for (i=0; i<count; i++) {
if ((retval = ejtag_dma_write_b(ejtag_info, addr+i*sizeof(*buf), buf[i])) != ERROR_OK)
return retval;
}

12
src/target/mips32_pracc.c
View File

@ -234,7 +234,7 @@ int mips32_pracc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *
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_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)),
@ -308,7 +308,7 @@ int mips32_pracc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *
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_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)),
@ -387,7 +387,7 @@ int mips32_pracc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *bu
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_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)),
@ -481,7 +481,7 @@ int mips32_pracc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32
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_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)),
@ -536,7 +536,7 @@ int mips32_pracc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16
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_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)),
@ -596,7 +596,7 @@ int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *b
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_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)),

8
src/target/mips_ejtag.h
View File

@ -26,6 +26,7 @@
#include "types.h"
#include "jtag.h"
/* tap instructions */
#define EJTAG_INST_IDCODE 0x01
#define EJTAG_INST_IMPCODE 0x03
#define EJTAG_INST_ADDRESS 0x08
@ -40,6 +41,7 @@
#define EJTAG_INST_TCBDATA 0x12
#define EJTAG_INST_BYPASS 0xFF
/* debug control register bits */
#define EJTAG_CTRL_TOF (1 << 1)
#define EJTAG_CTRL_TIF (1 << 2)
#define EJTAG_CTRL_BRKST (1 << 3)
@ -85,11 +87,15 @@
#define EJTAG_DEBUG_DM (1 << 30)
#define EJTAG_DEBUG_DBD (1 << 31)
/* implementaion register bits */
#define EJTAG_IMP_NODMA (1 << 14)
#define EJTAG_IMP_MIPS16 (1 << 16)
typedef struct mips_ejtag_s
{
int chain_pos;
u32 impcode;
// int use_dma;
/*int use_dma;*/
u32 ejtag_ctrl;
} mips_ejtag_t;

11
src/target/mips_m4k.c
View File

@ -256,12 +256,15 @@ int mips_m4k_assert_reset(target_t *target)
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT, NULL);
}
if (strcmp(target->variant, "ejtag_srst") == 0) {
if (strcmp(target->variant, "ejtag_srst") == 0)
{
u32 ejtag_ctrl = ejtag_info->ejtag_ctrl | EJTAG_CTRL_PRRST | EJTAG_CTRL_PERRST;
LOG_DEBUG("Using EJTAG reset (PRRST) to reset processor...");
mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
} else {
}
else
{
/* here we should issue a srst only, but we may have to assert trst as well */
if (jtag_reset_config & RESET_SRST_PULLS_TRST)
{
@ -522,7 +525,7 @@ int mips_m4k_read_memory(struct target_s *target, u32 address, u32 size, u32 cou
case 2:
case 1:
/* if noDMA off, use DMAACC mode for memory read */
if(ejtag_info->impcode & (1<<14))
if(ejtag_info->impcode & EJTAG_IMP_NODMA)
return mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer);
else
return mips32_dmaacc_read_mem(ejtag_info, address, size, count, (void *)buffer);
@ -561,7 +564,7 @@ int mips_m4k_write_memory(struct target_s *target, u32 address, u32 size, u32 co
case 2:
case 1:
/* if noDMA off, use DMAACC mode for memory write */
if(ejtag_info->impcode & (1<<14))
if(ejtag_info->impcode & EJTAG_IMP_NODMA)
mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer);
else
mips32_dmaacc_write_mem(ejtag_info, address, size, count, (void *)buffer);

46
testing/examples/PIC32/BlinkingLeds.c
View File

@ -1,23 +1,23 @@
#include <plib.h>
int main(void)
{
int i;
mPORTDClearBits(BIT_0);
mPORTDSetPinsDigitalOut(BIT_0);
mPORTDClearBits(BIT_1);
mPORTDSetPinsDigitalOut(BIT_1);
mPORTDClearBits(BIT_2);
mPORTDSetPinsDigitalOut(BIT_2);
while(1)
{
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_0);
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_1);
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_2);
}
return 0;
}
#include <plib.h>
int main(void)
{
int i;
mPORTDClearBits(BIT_0);
mPORTDSetPinsDigitalOut(BIT_0);
mPORTDClearBits(BIT_1);
mPORTDSetPinsDigitalOut(BIT_1);
mPORTDClearBits(BIT_2);
mPORTDSetPinsDigitalOut(BIT_2);
while(1)
{
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_0);
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_1);
for(i = 0; i < 500000; i++)
mPORTDToggleBits(BIT_2);
}
return 0;
}

6
testing/examples/PIC32/readme.txt
View File

@ -1,4 +1,4 @@
Here you'll find a simple example tested with PIC32 Starter kit (source code and .elf file). It will blink repeatedly the LEDs on the board.
The program was compiled and written on the target using MPLAB IDE v 8.0 that comes with the kit because openocd is missing currently the ability
to program the flash for this specific target. It is possible in the future this limitation to be removed.
Here you'll find a simple example tested with PIC32 Starter kit (source code and .elf file). It will blink repeatedly the LEDs on the board.
The program was compiled and written on the target using MPLAB IDE v 8.0 that comes with the kit because openocd is missing currently the ability
to program the flash for this specific target. It is possible in the future this limitation to be removed.