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openocd/src/flash/pic32mx.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* Copyright (C) 2008 by John McCarthy *
* jgmcc@magma.ca *
* *
* 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 "pic32mx.h"
#include "mips32.h"
static
struct pic32mx_devs_s {
uint8_t devid;
char *name;
uint32_t pfm_size;
} pic32mx_devs[] = {
{ 0x78, "460F512L USB", 512 },
{ 0x74, "460F256L USB", 256 },
{ 0x6D, "440F128L USB", 128 },
{ 0x56, "440F512H USB", 512 },
{ 0x52, "440F256H USB", 256 },
{ 0x4D, "440F128H USB", 128 },
{ 0x42, "420F032H USB", 32 },
{ 0x38, "360F512L", 512 },
{ 0x34, "360F256L", 256 },
{ 0x2D, "340F128L", 128 },
{ 0x2A, "320F128L", 128 },
{ 0x16, "340F512H", 512 },
{ 0x12, "340F256H", 256 },
{ 0x0D, "340F128H", 128 },
{ 0x0A, "320F128H", 128 },
{ 0x06, "320F064H", 64 },
{ 0x02, "320F032H", 32 },
{ 0x00, NULL, 0 }
};
static int pic32mx_register_commands(struct command_context_s *cmd_ctx);
static int pic32mx_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
static int pic32mx_erase(struct flash_bank_s *bank, int first, int last);
static int pic32mx_protect(struct flash_bank_s *bank, int set, int first, int last);
static int pic32mx_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count);
static int pic32mx_write_row(struct flash_bank_s *bank, uint32_t address, uint32_t srcaddr);
static int pic32mx_write_word(struct flash_bank_s *bank, uint32_t address, uint32_t word);
static int pic32mx_probe(struct flash_bank_s *bank);
static int pic32mx_auto_probe(struct flash_bank_s *bank);
//static int pic32mx_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int pic32mx_protect_check(struct flash_bank_s *bank);
static int pic32mx_info(struct flash_bank_s *bank, char *buf, int buf_size);
#if 0
int pic32mx_handle_lock_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
int pic32mx_handle_unlock_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
#endif
static int pic32mx_handle_chip_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
static int pic32mx_handle_pgm_word_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
//static int pic32mx_chip_erase(struct flash_bank_s *bank);
flash_driver_t pic32mx_flash =
{
.name = "pic32mx",
.register_commands = pic32mx_register_commands,
.flash_bank_command = pic32mx_flash_bank_command,
.erase = pic32mx_erase,
.protect = pic32mx_protect,
.write = pic32mx_write,
.probe = pic32mx_probe,
.auto_probe = pic32mx_auto_probe,
.erase_check = default_flash_mem_blank_check,
.protect_check = pic32mx_protect_check,
.info = pic32mx_info
};
static int pic32mx_register_commands(struct command_context_s *cmd_ctx)
{
command_t *pic32mx_cmd = register_command(cmd_ctx, NULL, "pic32mx", NULL, COMMAND_ANY, "pic32mx flash specific commands");
#if 0
register_command(cmd_ctx, pic32mx_cmd, "lock", pic32mx_handle_lock_command, COMMAND_EXEC,
"lock device");
register_command(cmd_ctx, pic32mx_cmd, "unlock", pic32mx_handle_unlock_command, COMMAND_EXEC,
"unlock protected device");
#endif
register_command(cmd_ctx, pic32mx_cmd, "chip_erase", pic32mx_handle_chip_erase_command, COMMAND_EXEC,
"erase device");
register_command(cmd_ctx, pic32mx_cmd, "pgm_word", pic32mx_handle_pgm_word_command, COMMAND_EXEC,
"program a word");
return ERROR_OK;
}
/* flash bank pic32mx <base> <size> 0 0 <target#>
*/
static int pic32mx_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
{
pic32mx_flash_bank_t *pic32mx_info;
if (argc < 6)
{
LOG_WARNING("incomplete flash_bank pic32mx configuration");
return ERROR_FLASH_BANK_INVALID;
}
pic32mx_info = malloc(sizeof(pic32mx_flash_bank_t));
bank->driver_priv = pic32mx_info;
pic32mx_info->write_algorithm = NULL;
pic32mx_info->probed = 0;
return ERROR_OK;
}
static uint32_t pic32mx_get_flash_status(flash_bank_t *bank)
{
target_t *target = bank->target;
uint32_t status;
target_read_u32(target, PIC32MX_NVMCON, &status);
return status;
}
static uint32_t pic32mx_wait_status_busy(flash_bank_t *bank, int timeout)
{
uint32_t status;
/* wait for busy to clear */
while (((status = pic32mx_get_flash_status(bank)) & NVMCON_NVMWR) && (timeout-- > 0))
{
LOG_DEBUG("status: 0x%" PRIx32, status );
alive_sleep(1);
}
if (timeout <= 0)
LOG_DEBUG("timeout: status: 0x%" PRIx32, status );
return status;
}
static int pic32mx_nvm_exec(struct flash_bank_s *bank, uint32_t op, uint32_t timeout)
{
target_t *target = bank->target;
uint32_t status;
target_write_u32(target, PIC32MX_NVMCON, NVMCON_NVMWREN|op);
/* unlock flash registers */
target_write_u32(target, PIC32MX_NVMKEY, NVMKEY1);
target_write_u32(target, PIC32MX_NVMKEY, NVMKEY2);
/* start operation */
target_write_u32(target, PIC32MX_NVMCONSET, NVMCON_NVMWR);
status = pic32mx_wait_status_busy(bank, timeout);
/* lock flash registers */
target_write_u32(target, PIC32MX_NVMCONCLR, NVMCON_NVMWREN);
return status;
}
static int pic32mx_protect_check(struct flash_bank_s *bank)
{
target_t *target = bank->target;
uint32_t devcfg0;
int s;
int num_pages;
if (target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
target_read_u32(target, PIC32MX_DEVCFG0, &devcfg0);
if ((devcfg0 & (1 << 28)) == 0) /* code protect bit */
num_pages = 0xffff; /* All pages protected */
else if (bank->base == PIC32MX_KSEG1_BOOT_FLASH)
{
if (devcfg0 & (1 << 24))
num_pages = 0; /* All pages unprotected */
else
num_pages = 0xffff; /* All pages protected */
}
else /* pgm flash */
num_pages = (~devcfg0 >> 12) & 0xff;
for (s = 0; s < bank->num_sectors && s < num_pages; s++)
bank->sectors[s].is_protected = 1;
for (; s < bank->num_sectors; s++)
bank->sectors[s].is_protected = 0;
return ERROR_OK;
}
static int pic32mx_erase(struct flash_bank_s *bank, int first, int last)
{
target_t *target = bank->target;
int i;
uint32_t status;
if (bank->target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if ((first == 0) && (last == (bank->num_sectors - 1)) && (bank->base == PIC32MX_KSEG0_PGM_FLASH || bank->base == PIC32MX_KSEG1_PGM_FLASH))
{
LOG_DEBUG("Erasing entire program flash");
status = pic32mx_nvm_exec(bank, NVMCON_OP_PFM_ERASE, 50);
if ( status & NVMCON_NVMERR )
return ERROR_FLASH_OPERATION_FAILED;
if ( status & NVMCON_LVDERR )
return ERROR_FLASH_OPERATION_FAILED;
return ERROR_OK;
}
for (i = first; i <= last; i++)
{
if (bank->base >= PIC32MX_KSEG1_PGM_FLASH)
target_write_u32(target, PIC32MX_NVMADDR, KS1Virt2Phys(bank->base + bank->sectors[i].offset));
else
target_write_u32(target, PIC32MX_NVMADDR, KS0Virt2Phys(bank->base + bank->sectors[i].offset));
status = pic32mx_nvm_exec(bank, NVMCON_OP_PAGE_ERASE, 10);
if ( status & NVMCON_NVMERR )
return ERROR_FLASH_OPERATION_FAILED;
if ( status & NVMCON_LVDERR )
return ERROR_FLASH_OPERATION_FAILED;
bank->sectors[i].is_erased = 1;
}
return ERROR_OK;
}
static int pic32mx_protect(struct flash_bank_s *bank, int set, int first, int last)
{
pic32mx_flash_bank_t *pic32mx_info = NULL;
target_t *target = bank->target;
#if 0
uint16_t prot_reg[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
int i, reg, bit;
int status;
uint32_t protection;
#endif
pic32mx_info = bank->driver_priv;
if (target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
#if 0
if ((first && (first % pic32mx_info->ppage_size)) || ((last + 1) && (last + 1) % pic32mx_info->ppage_size))
{
LOG_WARNING("sector start/end incorrect - stm32 has %dK sector protection", pic32mx_info->ppage_size);
return ERROR_FLASH_SECTOR_INVALID;
}
/* medium density - each bit refers to a 4bank protection
* high density - each bit refers to a 2bank protection */
target_read_u32(target, PIC32MX_FLASH_WRPR, &protection);
prot_reg[0] = (uint16_t)protection;
prot_reg[1] = (uint16_t)(protection >> 8);
prot_reg[2] = (uint16_t)(protection >> 16);
prot_reg[3] = (uint16_t)(protection >> 24);
if (pic32mx_info->ppage_size == 2)
{
/* high density flash */
/* bit 7 controls sector 62 - 255 protection */
if (last > 61)
{
if (set)
prot_reg[3] &= ~(1 << 7);
else
prot_reg[3] |= (1 << 7);
}
if (first > 61)
first = 62;
if (last > 61)
last = 61;
for (i = first; i <= last; i++)
{
reg = (i / pic32mx_info->ppage_size) / 8;
bit = (i / pic32mx_info->ppage_size) - (reg * 8);
if ( set )
prot_reg[reg] &= ~(1 << bit);
else
prot_reg[reg] |= (1 << bit);
}
}
else
{
/* medium density flash */
for (i = first; i <= last; i++)
{
reg = (i / pic32mx_info->ppage_size) / 8;
bit = (i / pic32mx_info->ppage_size) - (reg * 8);
if ( set )
prot_reg[reg] &= ~(1 << bit);
else
prot_reg[reg] |= (1 << bit);
}
}
if ((status = pic32mx_erase_options(bank)) != ERROR_OK)
return status;
pic32mx_info->option_bytes.protection[0] = prot_reg[0];
pic32mx_info->option_bytes.protection[1] = prot_reg[1];
pic32mx_info->option_bytes.protection[2] = prot_reg[2];
pic32mx_info->option_bytes.protection[3] = prot_reg[3];
return pic32mx_write_options(bank);
#else
return ERROR_OK;
#endif
}
static int pic32mx_write_block(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
{
target_t *target = bank->target;
uint32_t buffer_size = 512;
working_area_t *source;
uint32_t address = bank->base + offset;
int retval = ERROR_OK;
#if 0
pic32mx_flash_bank_t *pic32mx_info = bank->driver_priv;
armv7m_algorithm_t armv7m_info;
uint8_t pic32mx_flash_write_code[] = {
/* write: */
0xDF, 0xF8, 0x24, 0x40, /* ldr r4, PIC32MX_FLASH_CR */
0x09, 0x4D, /* ldr r5, PIC32MX_FLASH_SR */
0x4F, 0xF0, 0x01, 0x03, /* mov r3, #1 */
0x23, 0x60, /* str r3, [r4, #0] */
0x30, 0xF8, 0x02, 0x3B, /* ldrh r3, [r0], #2 */
0x21, 0xF8, 0x02, 0x3B, /* strh r3, [r1], #2 */
/* busy: */
0x2B, 0x68, /* ldr r3, [r5, #0] */
0x13, 0xF0, 0x01, 0x0F, /* tst r3, #0x01 */
0xFB, 0xD0, /* beq busy */
0x13, 0xF0, 0x14, 0x0F, /* tst r3, #0x14 */
0x01, 0xD1, /* bne exit */
0x01, 0x3A, /* subs r2, r2, #1 */
0xED, 0xD1, /* bne write */
/* exit: */
0xFE, 0xE7, /* b exit */
0x10, 0x20, 0x02, 0x40, /* PIC32MX_FLASH_CR: .word 0x40022010 */
0x0C, 0x20, 0x02, 0x40 /* PIC32MX_FLASH_SR: .word 0x4002200C */
};
/* flash write code */
if (target_alloc_working_area(target, sizeof(pic32mx_flash_write_code), &pic32mx_info->write_algorithm) != ERROR_OK)
{
LOG_WARNING("no working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
};
if ((retval = target_write_buffer(target, pic32mx_info->write_algorithm->address, sizeof(pic32mx_flash_write_code), pic32mx_flash_write_code)) != ERROR_OK)
return retval;
#endif
/* memory buffer */
if (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
{
#if 0
/* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
if (pic32mx_info->write_algorithm)
target_free_working_area(target, pic32mx_info->write_algorithm);
#endif
LOG_WARNING("no large enough working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
while (count >= buffer_size/4)
{
uint32_t status;
if ((retval = target_write_buffer(target, source->address, buffer_size, buffer)) != ERROR_OK) {
LOG_ERROR("Failed to write row buffer (%d words) to RAM", (int)(buffer_size/4));
break;
}
#if 0
buf_set_u32(reg_params[0].value, 0, 32, source->address);
buf_set_u32(reg_params[1].value, 0, 32, address);
buf_set_u32(reg_params[2].value, 0, 32, buffer_size/4);
if ((retval = target_run_algorithm(target, 0, NULL, 4, reg_params, pic32mx_info->write_algorithm->address, \
pic32mx_info->write_algorithm->address + (sizeof(pic32mx_flash_write_code) - 10), 10000, &armv7m_info)) != ERROR_OK)
{
LOG_ERROR("error executing pic32mx flash write algorithm");
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
if (buf_get_u32(reg_params[3].value, 0, 32) & 0x14)
{
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
#endif
status = pic32mx_write_row(bank, address, source->address);
if ( status & NVMCON_NVMERR ) {
LOG_ERROR("Flash write error NVMERR (status = 0x%08" PRIx32 ")", status);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
if ( status & NVMCON_LVDERR ) {
LOG_ERROR("Flash write error LVDERR (status = 0x%08" PRIx32 ")", status);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
buffer += buffer_size;
address += buffer_size;
count -= buffer_size/4;
}
target_free_working_area(target, source);
while (count > 0)
{
uint32_t value;
memcpy(&value, buffer, sizeof(uint32_t));
uint32_t status = pic32mx_write_word(bank, address, value);
if ( status & NVMCON_NVMERR ) {
LOG_ERROR("Flash write error NVMERR (status = 0x%08" PRIx32 ")", status);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
if ( status & NVMCON_LVDERR ) {
LOG_ERROR("Flash write error LVDERR (status = 0x%08" PRIx32 ")", status);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
buffer += 4;
address += 4;
count--;
}
return retval;
}
static int pic32mx_write_word(struct flash_bank_s *bank, uint32_t address, uint32_t word)
{
target_t *target = bank->target;
if (bank->base >= PIC32MX_KSEG1_PGM_FLASH)
target_write_u32(target, PIC32MX_NVMADDR, KS1Virt2Phys(address));
else
target_write_u32(target, PIC32MX_NVMADDR, KS0Virt2Phys(address));
target_write_u32(target, PIC32MX_NVMDATA, word);
return pic32mx_nvm_exec(bank, NVMCON_OP_WORD_PROG, 5);
}
/*
* Write a 128 word (512 byte) row to flash address from RAM srcaddr.
*/
static int pic32mx_write_row(struct flash_bank_s *bank, uint32_t address, uint32_t srcaddr)
{
target_t *target = bank->target;
LOG_DEBUG("addr: 0x%08" PRIx32 " srcaddr: 0x%08" PRIx32 "", address, srcaddr);
if (address >= PIC32MX_KSEG1_PGM_FLASH)
target_write_u32(target, PIC32MX_NVMADDR, KS1Virt2Phys(address));
else
target_write_u32(target, PIC32MX_NVMADDR, KS0Virt2Phys(address));
if (srcaddr >= PIC32MX_KSEG1_RAM)
target_write_u32(target, PIC32MX_NVMSRCADDR, KS1Virt2Phys(srcaddr));
else
target_write_u32(target, PIC32MX_NVMSRCADDR, KS0Virt2Phys(srcaddr));
return pic32mx_nvm_exec(bank, NVMCON_OP_ROW_PROG, 100);
}
static int pic32mx_write(struct flash_bank_s *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
{
uint32_t words_remaining = (count / 4);
uint32_t bytes_remaining = (count & 0x00000003);
uint32_t address = bank->base + offset;
uint32_t bytes_written = 0;
uint32_t status;
int retval;
if (bank->target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (offset & 0x3)
{
LOG_WARNING("offset 0x%" PRIx32 "breaks required 4-byte alignment", offset);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
/* multiple words (4-byte) to be programmed? */
if (words_remaining > 0)
{
/* try using a block write */
if ((retval = pic32mx_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
{
if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
{
/* if block write failed (no sufficient working area),
* we use normal (slow) single dword accesses */
LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
}
else if (retval == ERROR_FLASH_OPERATION_FAILED)
{
LOG_ERROR("flash writing failed with error code: 0x%x", retval);
return ERROR_FLASH_OPERATION_FAILED;
}
}
else
{
buffer += words_remaining * 4;
address += words_remaining * 4;
words_remaining = 0;
}
}
while (words_remaining > 0)
{
uint32_t value;
memcpy(&value, buffer + bytes_written, sizeof(uint32_t));
status = pic32mx_write_word(bank, address, value);
if ( status & NVMCON_NVMERR )
return ERROR_FLASH_OPERATION_FAILED;
if ( status & NVMCON_LVDERR )
return ERROR_FLASH_OPERATION_FAILED;
bytes_written += 4;
words_remaining--;
address += 4;
}
if (bytes_remaining)
{
uint32_t value = 0xffffffff;
memcpy(&value, buffer + bytes_written, bytes_remaining);
status = pic32mx_write_word(bank, address, value);
if ( status & NVMCON_NVMERR )
return ERROR_FLASH_OPERATION_FAILED;
if ( status & NVMCON_LVDERR )
return ERROR_FLASH_OPERATION_FAILED;
}
return ERROR_OK;
}
static int pic32mx_probe(struct flash_bank_s *bank)
{
target_t *target = bank->target;
pic32mx_flash_bank_t *pic32mx_info = bank->driver_priv;
mips32_common_t *mips32 = target->arch_info;
mips_ejtag_t *ejtag_info = &mips32->ejtag_info;
int i;
uint16_t num_pages = 0;
uint32_t device_id;
int page_size;
pic32mx_info->probed = 0;
device_id = ejtag_info->idcode;
LOG_INFO( "device id = 0x%08" PRIx32 " (manuf 0x%03x dev 0x%02x, ver 0x%03x)",
device_id,
(unsigned)((device_id >> 1)&0x7ff),
(unsigned)((device_id >> 12)&0xff),
(unsigned)((device_id >> 20)&0xfff) );
if (((device_id >> 1)&0x7ff) != PIC32MX_MANUF_ID) {
LOG_WARNING( "Cannot identify target as a PIC32MX family." );
return ERROR_FLASH_OPERATION_FAILED;
}
page_size = 4096;
if (bank->base == PIC32MX_KSEG1_BOOT_FLASH || bank->base == 1) {
/* 0xBFC00000: Boot flash size fixed at 12k */
num_pages = 12;
} else {
/* 0xBD000000: Program flash size varies with device */
for (i = 0; pic32mx_devs[i].name != NULL; i++)
if (pic32mx_devs[i].devid == ((device_id >> 12) & 0xff)) {
num_pages = pic32mx_devs[i].pfm_size;
break;
}
if (pic32mx_devs[i].name == NULL) {
LOG_WARNING( "Cannot identify target as a PIC32MX family." );
return ERROR_FLASH_OPERATION_FAILED;
}
}
#if 0
if (bank->target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* get flash size from target */
if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK)
{
/* failed reading flash size, default to max target family */
num_pages = 0xffff;
}
#endif
LOG_INFO( "flash size = %dkbytes", num_pages );
/* calculate numbers of pages */
num_pages /= (page_size / 1024);
if (bank->base == 0) bank->base = PIC32MX_KSEG1_PGM_FLASH;
if (bank->base == 1) bank->base = PIC32MX_KSEG1_BOOT_FLASH;
bank->size = (num_pages * page_size);
bank->num_sectors = num_pages;
bank->chip_width = 4;
bank->bus_width = 4;
bank->sectors = malloc(sizeof(flash_sector_t) * num_pages);
for (i = 0; i < num_pages; i++)
{
bank->sectors[i].offset = i * page_size;
bank->sectors[i].size = page_size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
pic32mx_info->probed = 1;
return ERROR_OK;
}
static int pic32mx_auto_probe(struct flash_bank_s *bank)
{
pic32mx_flash_bank_t *pic32mx_info = bank->driver_priv;
if (pic32mx_info->probed)
return ERROR_OK;
return pic32mx_probe(bank);
}
#if 0
static int pic32mx_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
return ERROR_OK;
}
#endif
static int pic32mx_info(struct flash_bank_s *bank, char *buf, int buf_size)
{
target_t *target = bank->target;
mips32_common_t *mips32 = target->arch_info;
mips_ejtag_t *ejtag_info = &mips32->ejtag_info;
uint32_t device_id;
int printed = 0, i;
device_id = ejtag_info->idcode;
if (((device_id >> 1)&0x7ff) != PIC32MX_MANUF_ID) {
snprintf(buf, buf_size,
"Cannot identify target as a PIC32MX family (manufacturer 0x%03d != 0x%03d)\n",
(unsigned)((device_id >> 1)&0x7ff),
PIC32MX_MANUF_ID);
return ERROR_FLASH_OPERATION_FAILED;
}
for (i = 0; pic32mx_devs[i].name != NULL; i++)
if (pic32mx_devs[i].devid == ((device_id >> 12) & 0xff)) {
printed = snprintf(buf, buf_size, "PIC32MX%s", pic32mx_devs[i].name);
break;
}
if (pic32mx_devs[i].name == NULL) {
snprintf(buf, buf_size, "Cannot identify target as a PIC32MX family\n");
return ERROR_FLASH_OPERATION_FAILED;
}
buf += printed;
buf_size -= printed;
printed = snprintf(buf, buf_size, " Ver: 0x%03x",
(unsigned)((device_id >> 20)&0xfff));
return ERROR_OK;
}
#if 0
int pic32mx_handle_lock_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
flash_bank_t *bank;
target_t *target = NULL;
pic32mx_flash_bank_t *pic32mx_info = NULL;
if (argc < 1)
{
command_print(cmd_ctx, "pic32mx lock <bank>");
return ERROR_OK;
}
bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
if (!bank)
{
command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
return ERROR_OK;
}
pic32mx_info = bank->driver_priv;
target = bank->target;
if (target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (pic32mx_erase_options(bank) != ERROR_OK)
{
command_print(cmd_ctx, "pic32mx failed to erase options");
return ERROR_OK;
}
/* set readout protection */
pic32mx_info->option_bytes.RDP = 0;
if (pic32mx_write_options(bank) != ERROR_OK)
{
command_print(cmd_ctx, "pic32mx failed to lock device");
return ERROR_OK;
}
command_print(cmd_ctx, "pic32mx locked");
return ERROR_OK;
}
int pic32mx_handle_unlock_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
flash_bank_t *bank;
target_t *target = NULL;
pic32mx_flash_bank_t *pic32mx_info = NULL;
if (argc < 1)
{
command_print(cmd_ctx, "pic32mx unlock <bank>");
return ERROR_OK;
}
bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
if (!bank)
{
command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
return ERROR_OK;
}
pic32mx_info = bank->driver_priv;
target = bank->target;
if (target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (pic32mx_erase_options(bank) != ERROR_OK)
{
command_print(cmd_ctx, "pic32mx failed to unlock device");
return ERROR_OK;
}
if (pic32mx_write_options(bank) != ERROR_OK)
{
command_print(cmd_ctx, "pic32mx failed to lock device");
return ERROR_OK;
}
command_print(cmd_ctx, "pic32mx unlocked");
return ERROR_OK;
}
#endif
#if 0
static int pic32mx_chip_erase(struct flash_bank_s *bank)
{
target_t *target = bank->target;
#if 0
uint32_t status;
#endif
if (target->state != TARGET_HALTED)
{
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
LOG_INFO("PIC32MX chip erase called");
#if 0
/* unlock option flash registers */
target_write_u32(target, PIC32MX_FLASH_KEYR, KEY1);
target_write_u32(target, PIC32MX_FLASH_KEYR, KEY2);
/* chip erase flash memory */
target_write_u32(target, PIC32MX_FLASH_CR, FLASH_MER);
target_write_u32(target, PIC32MX_FLASH_CR, FLASH_MER|FLASH_STRT);
status = pic32mx_wait_status_busy(bank, 10);
target_write_u32(target, PIC32MX_FLASH_CR, FLASH_LOCK);
if ( status & FLASH_WRPRTERR )
{
LOG_ERROR("pic32mx device protected");
return ERROR_OK;
}
if ( status & FLASH_PGERR )
{
LOG_ERROR("pic32mx device programming failed");
return ERROR_OK;
}
#endif
return ERROR_OK;
}
#endif
static int pic32mx_handle_chip_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
#if 0
flash_bank_t *bank;
int i;
if (argc != 0)
{
command_print(cmd_ctx, "pic32mx chip_erase");
return ERROR_OK;
}
bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
if (!bank)
{
command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
return ERROR_OK;
}
if (pic32mx_chip_erase(bank) == ERROR_OK)
{
/* set all sectors as erased */
for (i = 0; i < bank->num_sectors; i++)
{
bank->sectors[i].is_erased = 1;
}
command_print(cmd_ctx, "pic32mx chip erase complete");
}
else
{
command_print(cmd_ctx, "pic32mx chip erase failed");
}
#endif
return ERROR_OK;
}
static int pic32mx_handle_pgm_word_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
flash_bank_t *bank;
uint32_t address, value;
int status, res;
if (argc != 3)
{
command_print(cmd_ctx, "pic32mx pgm_word <addr> <value> <bank>");
return ERROR_OK;
}
address = strtoul(args[0], NULL, 0);
value = strtoul(args[1], NULL, 0);
bank = get_flash_bank_by_num(strtoul(args[2], NULL, 0));
if (!bank)
{
command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[2]);
return ERROR_OK;
}
if (address < bank->base || address >= (bank->base+bank->size))
{
command_print(cmd_ctx, "flash address '%s' is out of bounds", args[0]);
return ERROR_OK;
}
res = ERROR_OK;
status = pic32mx_write_word(bank, address, value);
if ( status & NVMCON_NVMERR )
res = ERROR_FLASH_OPERATION_FAILED;
if ( status & NVMCON_LVDERR )
res = ERROR_FLASH_OPERATION_FAILED;
if (res == ERROR_OK)
command_print(cmd_ctx, "pic32mx pgm word complete");
else
command_print(cmd_ctx, "pic32mx pgm word failed (status = 0x%x)", status);
return ERROR_OK;
}
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