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|
/*
* Spansion FM4 flash
*
* Copyright (c) 2015 Andreas Färber
*
* Based on S6E2DH_MN709-00013 for S6E2DH/DF/D5/D3 series
* Based on S6E2CC_MN709-00007 for S6E2CC/C5/C4/C3/C2/C1 series
* Based on MB9B560R_MN709-00005 for MB9BFx66/x67/x68 series
* Based on MB9B560L_MN709-00006 for MB9BFx64/x65/x66 series
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include <helper/binarybuffer.h>
#include <target/algorithm.h>
#include <target/armv7m.h>
#define FLASH_BASE 0x40000000
#define FASZR (FLASH_BASE + 0x000)
#define DFCTRLR (FLASH_BASE + 0x030)
#define DFCTRLR_DFE (1UL << 0)
#define WDG_BASE 0x40011000
#define WDG_CTL (WDG_BASE + 0x008)
#define WDG_LCK (WDG_BASE + 0xC00)
enum fm4_variant {
mb9bfx64,
mb9bfx65,
mb9bfx66,
mb9bfx67,
mb9bfx68,
s6e2cx8,
s6e2cx9,
s6e2cxa,
s6e2dx,
};
struct fm4_flash_bank {
enum fm4_variant variant;
int macro_nr;
bool probed;
};
static int fm4_disable_hw_watchdog(struct target *target)
{
int retval;
retval = target_write_u32(target, WDG_LCK, 0x1ACCE551);
if (retval != ERROR_OK)
return retval;
retval = target_write_u32(target, WDG_LCK, 0xE5331AAE);
if (retval != ERROR_OK)
return retval;
retval = target_write_u32(target, WDG_CTL, 0);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int fm4_enter_flash_cpu_programming_mode(struct target *target)
{
uint32_t u32_value;
int retval;
/* FASZR ASZ = CPU programming mode */
retval = target_write_u32(target, FASZR, 0x00000001);
if (retval != ERROR_OK)
return retval;
retval = target_read_u32(target, FASZR, &u32_value);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int fm4_enter_flash_cpu_rom_mode(struct target *target)
{
uint32_t u32_value;
int retval;
/* FASZR ASZ = CPU ROM mode */
retval = target_write_u32(target, FASZR, 0x00000002);
if (retval != ERROR_OK)
return retval;
retval = target_read_u32(target, FASZR, &u32_value);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int fm4_flash_erase(struct flash_bank *bank, int first, int last)
{
struct target *target = bank->target;
struct working_area *workarea;
struct reg_param reg_params[4];
struct armv7m_algorithm armv7m_algo;
unsigned i;
int retval, sector;
const uint8_t erase_sector_code[] = {
#include "../../../contrib/loaders/flash/fm4/erase.inc"
};
if (target->state != TARGET_HALTED) {
LOG_WARNING("Cannot communicate... target not halted.");
return ERROR_TARGET_NOT_HALTED;
}
LOG_DEBUG("Spansion FM4 erase sectors %d to %d", first, last);
retval = fm4_disable_hw_watchdog(target);
if (retval != ERROR_OK)
return retval;
retval = fm4_enter_flash_cpu_programming_mode(target);
if (retval != ERROR_OK)
return retval;
retval = target_alloc_working_area(target, sizeof(erase_sector_code),
&workarea);
if (retval != ERROR_OK) {
LOG_ERROR("No working area available.");
retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
goto err_alloc_code;
}
retval = target_write_buffer(target, workarea->address,
sizeof(erase_sector_code), erase_sector_code);
if (retval != ERROR_OK)
goto err_write_code;
armv7m_algo.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_algo.core_mode = ARM_MODE_THREAD;
init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
init_reg_param(®_params[3], "r3", 32, PARAM_IN);
for (sector = first; sector <= last; sector++) {
uint32_t addr = bank->base + bank->sectors[sector].offset;
uint32_t result;
buf_set_u32(reg_params[0].value, 0, 32, (addr & ~0xffff) | 0xAA8);
buf_set_u32(reg_params[1].value, 0, 32, (addr & ~0xffff) | 0x554);
buf_set_u32(reg_params[2].value, 0, 32, addr);
retval = target_run_algorithm(target,
0, NULL,
ARRAY_SIZE(reg_params), reg_params,
workarea->address, 0,
1000, &armv7m_algo);
if (retval != ERROR_OK) {
LOG_ERROR("Error executing flash sector erase "
"programming algorithm");
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run;
}
result = buf_get_u32(reg_params[3].value, 0, 32);
if (result == 2) {
LOG_ERROR("Timeout error from flash sector erase programming algorithm");
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run_ret;
} else if (result != 0) {
LOG_ERROR("Unexpected error %d from flash sector erase programming algorithm", result);
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run_ret;
} else
retval = ERROR_OK;
bank->sectors[sector].is_erased = 1;
}
err_run_ret:
err_run:
for (i = 0; i < ARRAY_SIZE(reg_params); i++)
destroy_reg_param(®_params[i]);
err_write_code:
target_free_working_area(target, workarea);
err_alloc_code:
if (retval != ERROR_OK)
fm4_enter_flash_cpu_rom_mode(target);
else
retval = fm4_enter_flash_cpu_rom_mode(target);
return retval;
}
static int fm4_flash_write(struct flash_bank *bank, const uint8_t *buffer,
uint32_t offset, uint32_t byte_count)
{
struct target *target = bank->target;
struct working_area *code_workarea, *data_workarea;
struct reg_param reg_params[6];
struct armv7m_algorithm armv7m_algo;
uint32_t halfword_count = DIV_ROUND_UP(byte_count, 2);
uint32_t result;
unsigned i;
int retval;
const uint8_t write_block_code[] = {
#include "../../../contrib/loaders/flash/fm4/write.inc"
};
LOG_DEBUG("Spansion FM4 write at 0x%08" PRIx32 " (%" PRId32 " bytes)",
offset, byte_count);
if (offset & 0x1) {
LOG_ERROR("offset 0x%" PRIx32 " breaks required 2-byte alignment",
offset);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
if (byte_count & 0x1) {
LOG_WARNING("length %" PRId32 " is not 2-byte aligned, rounding up",
byte_count);
}
if (target->state != TARGET_HALTED) {
LOG_WARNING("Cannot communicate... target not halted.");
return ERROR_TARGET_NOT_HALTED;
}
retval = fm4_disable_hw_watchdog(target);
if (retval != ERROR_OK)
return retval;
retval = target_alloc_working_area(target, sizeof(write_block_code),
&code_workarea);
if (retval != ERROR_OK) {
LOG_ERROR("No working area available for write code.");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
retval = target_write_buffer(target, code_workarea->address,
sizeof(write_block_code), write_block_code);
if (retval != ERROR_OK)
goto err_write_code;
retval = target_alloc_working_area(target,
MIN(halfword_count * 2, target_get_working_area_avail(target)),
&data_workarea);
if (retval != ERROR_OK) {
LOG_ERROR("No working area available for write data.");
retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
goto err_alloc_data;
}
armv7m_algo.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_algo.core_mode = ARM_MODE_THREAD;
init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
init_reg_param(®_params[3], "r3", 32, PARAM_OUT);
init_reg_param(®_params[4], "r4", 32, PARAM_OUT);
init_reg_param(®_params[5], "r5", 32, PARAM_IN);
retval = fm4_enter_flash_cpu_programming_mode(target);
if (retval != ERROR_OK)
goto err_flash_mode;
while (byte_count > 0) {
uint32_t halfwords = MIN(halfword_count, data_workarea->size / 2);
uint32_t addr = bank->base + offset;
LOG_DEBUG("copying %" PRId32 " bytes to SRAM " TARGET_ADDR_FMT,
MIN(halfwords * 2, byte_count), data_workarea->address);
retval = target_write_buffer(target, data_workarea->address,
MIN(halfwords * 2, byte_count), buffer);
if (retval != ERROR_OK) {
LOG_ERROR("Error writing data buffer");
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_write_data;
}
LOG_DEBUG("writing 0x%08" PRIx32 "-0x%08" PRIx32 " (%" PRId32 "x)",
addr, addr + halfwords * 2 - 1, halfwords);
buf_set_u32(reg_params[0].value, 0, 32, (addr & ~0xffff) | 0xAA8);
buf_set_u32(reg_params[1].value, 0, 32, (addr & ~0xffff) | 0x554);
buf_set_u32(reg_params[2].value, 0, 32, addr);
buf_set_u32(reg_params[3].value, 0, 32, data_workarea->address);
buf_set_u32(reg_params[4].value, 0, 32, halfwords);
retval = target_run_algorithm(target,
0, NULL,
ARRAY_SIZE(reg_params), reg_params,
code_workarea->address, 0,
5 * 60 * 1000, &armv7m_algo);
if (retval != ERROR_OK) {
LOG_ERROR("Error executing flash sector erase "
"programming algorithm");
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run;
}
result = buf_get_u32(reg_params[5].value, 0, 32);
if (result == 2) {
LOG_ERROR("Timeout error from flash write "
"programming algorithm");
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run_ret;
} else if (result != 0) {
LOG_ERROR("Unexpected error %d from flash write "
"programming algorithm", result);
retval = ERROR_FLASH_OPERATION_FAILED;
goto err_run_ret;
} else
retval = ERROR_OK;
halfword_count -= halfwords;
offset += halfwords * 2;
buffer += halfwords * 2;
byte_count -= MIN(halfwords * 2, byte_count);
}
err_run_ret:
err_run:
err_write_data:
retval = fm4_enter_flash_cpu_rom_mode(target);
err_flash_mode:
for (i = 0; i < ARRAY_SIZE(reg_params); i++)
destroy_reg_param(®_params[i]);
target_free_working_area(target, data_workarea);
err_alloc_data:
err_write_code:
target_free_working_area(target, code_workarea);
return retval;
}
static int mb9bf_probe(struct flash_bank *bank)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
uint32_t flash_addr = bank->base;
int i;
switch (fm4_bank->variant) {
case mb9bfx64:
bank->num_sectors = 8;
break;
case mb9bfx65:
bank->num_sectors = 10;
break;
case mb9bfx66:
bank->num_sectors = 12;
break;
case mb9bfx67:
bank->num_sectors = 16;
break;
case mb9bfx68:
bank->num_sectors = 20;
break;
default:
return ERROR_FLASH_OPER_UNSUPPORTED;
}
LOG_DEBUG("%d sectors", bank->num_sectors);
bank->sectors = calloc(bank->num_sectors,
sizeof(struct flash_sector));
for (i = 0; i < bank->num_sectors; i++) {
if (i < 4)
bank->sectors[i].size = 8 * 1024;
else if (i == 4)
bank->sectors[i].size = 32 * 1024;
else
bank->sectors[i].size = 64 * 1024;
bank->sectors[i].offset = flash_addr - bank->base;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = -1;
bank->size += bank->sectors[i].size;
flash_addr += bank->sectors[i].size;
}
return ERROR_OK;
}
static void s6e2cc_init_sector(struct flash_sector *sector, int sa)
{
if (sa < 8)
sector->size = 8 * 1024;
else if (sa == 8)
sector->size = 32 * 1024;
else
sector->size = 64 * 1024;
sector->is_erased = -1;
sector->is_protected = -1;
}
static int s6e2cc_probe(struct flash_bank *bank)
{
struct target *target = bank->target;
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
uint32_t u32_value;
uint32_t flash_addr = bank->base;
int i, retval, num_sectors, num_extra_sectors;
retval = target_read_u32(target, DFCTRLR, &u32_value);
if (retval != ERROR_OK)
return retval;
if (u32_value & DFCTRLR_DFE) {
LOG_WARNING("Dual Flash mode is not implemented.");
return ERROR_FLASH_OPER_UNSUPPORTED;
}
switch (fm4_bank->variant) {
case s6e2cx8:
num_sectors = (fm4_bank->macro_nr == 0) ? 20 : 0;
break;
case s6e2cx9:
num_sectors = (fm4_bank->macro_nr == 0) ? 20 : 12;
break;
case s6e2cxa:
num_sectors = 20;
break;
default:
return ERROR_FLASH_OPER_UNSUPPORTED;
}
num_extra_sectors = (fm4_bank->macro_nr == 0) ? 1 : 4;
bank->num_sectors = num_sectors + num_extra_sectors;
LOG_DEBUG("%d sectors", bank->num_sectors);
bank->sectors = calloc(bank->num_sectors,
sizeof(struct flash_sector));
for (i = 0; i < num_sectors; i++) {
int sa = 4 + i;
bank->sectors[i].offset = flash_addr - bank->base;
s6e2cc_init_sector(&bank->sectors[i], sa);
bank->size += bank->sectors[i].size;
flash_addr += bank->sectors[i].size;
}
flash_addr = (fm4_bank->macro_nr == 0) ? 0x00406000 : 0x00408000;
for (; i < bank->num_sectors; i++) {
int sa = 4 - num_extra_sectors + (i - num_sectors);
bank->sectors[i].offset = flash_addr - bank->base;
s6e2cc_init_sector(&bank->sectors[i], sa);
/*
* Don't increase bank->size for these sectors
* to avoid an overlap between Flash Macros #0 and #1.
*/
flash_addr += bank->sectors[i].size;
}
return ERROR_OK;
}
static int s6e2dh_probe(struct flash_bank *bank)
{
uint32_t flash_addr = bank->base;
int i;
bank->num_sectors = 10;
bank->sectors = calloc(bank->num_sectors,
sizeof(struct flash_sector));
for (i = 0; i < bank->num_sectors; i++) {
if (i < 4)
bank->sectors[i].size = 8 * 1024;
else if (i == 4)
bank->sectors[i].size = 32 * 1024;
else
bank->sectors[i].size = 64 * 1024;
bank->sectors[i].offset = flash_addr - bank->base;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = -1;
bank->size += bank->sectors[i].size;
flash_addr += bank->sectors[i].size;
}
return ERROR_OK;
}
static int fm4_probe(struct flash_bank *bank)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
int retval;
if (fm4_bank->probed)
return ERROR_OK;
if (bank->target->state != TARGET_HALTED) {
LOG_WARNING("Cannot communicate... target not halted.");
return ERROR_TARGET_NOT_HALTED;
}
switch (fm4_bank->variant) {
case mb9bfx64:
case mb9bfx65:
case mb9bfx66:
case mb9bfx67:
case mb9bfx68:
retval = mb9bf_probe(bank);
break;
case s6e2cx8:
case s6e2cx9:
case s6e2cxa:
retval = s6e2cc_probe(bank);
break;
case s6e2dx:
retval = s6e2dh_probe(bank);
break;
default:
return ERROR_FLASH_OPER_UNSUPPORTED;
}
if (retval != ERROR_OK)
return retval;
fm4_bank->probed = true;
return ERROR_OK;
}
static int fm4_auto_probe(struct flash_bank *bank)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
if (fm4_bank->probed)
return ERROR_OK;
return fm4_probe(bank);
}
static int fm4_get_info_command(struct flash_bank *bank, char *buf, int buf_size)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
const char *name;
if (bank->target->state != TARGET_HALTED) {
LOG_WARNING("Cannot communicate... target not halted.");
return ERROR_TARGET_NOT_HALTED;
}
switch (fm4_bank->variant) {
case mb9bfx64:
name = "MB9BFx64";
break;
case mb9bfx65:
name = "MB9BFx65";
break;
case mb9bfx66:
name = "MB9BFx66";
break;
case mb9bfx67:
name = "MB9BFx67";
break;
case mb9bfx68:
name = "MB9BFx68";
break;
case s6e2cx8:
name = "S6E2Cx8";
break;
case s6e2cx9:
name = "S6E2Cx9";
break;
case s6e2cxa:
name = "S6E2CxA";
break;
case s6e2dx:
name = "S6E2Dx";
break;
default:
name = "unknown";
break;
}
switch (fm4_bank->variant) {
case s6e2cx8:
case s6e2cx9:
case s6e2cxa:
snprintf(buf, buf_size, "%s MainFlash Macro #%i",
name, fm4_bank->macro_nr);
break;
default:
snprintf(buf, buf_size, "%s MainFlash", name);
break;
}
return ERROR_OK;
}
static bool fm4_name_match(const char *s, const char *pattern)
{
int i = 0;
while (s[i]) {
/* If the match string is shorter, ignore excess */
if (!pattern[i])
return true;
/* Use x as wildcard */
if (pattern[i] != 'x' && tolower(s[i]) != tolower(pattern[i]))
return false;
i++;
}
return true;
}
static int mb9bf_bank_setup(struct flash_bank *bank, const char *variant)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
if (fm4_name_match(variant, "MB9BFx64")) {
fm4_bank->variant = mb9bfx64;
} else if (fm4_name_match(variant, "MB9BFx65")) {
fm4_bank->variant = mb9bfx65;
} else if (fm4_name_match(variant, "MB9BFx66")) {
fm4_bank->variant = mb9bfx66;
} else if (fm4_name_match(variant, "MB9BFx67")) {
fm4_bank->variant = mb9bfx67;
} else if (fm4_name_match(variant, "MB9BFx68")) {
fm4_bank->variant = mb9bfx68;
} else {
LOG_WARNING("MB9BF variant %s not recognized.", variant);
return ERROR_FLASH_OPER_UNSUPPORTED;
}
return ERROR_OK;
}
static int s6e2cc_bank_setup(struct flash_bank *bank, const char *variant)
{
struct fm4_flash_bank *fm4_bank = bank->driver_priv;
if (fm4_name_match(variant, "S6E2Cx8")) {
fm4_bank->variant = s6e2cx8;
} else if (fm4_name_match(variant, "S6E2Cx9")) {
fm4_bank->variant = s6e2cx9;
} else if (fm4_name_match(variant, "S6E2CxA")) {
fm4_bank->variant = s6e2cxa;
} else {
LOG_WARNING("S6E2CC variant %s not recognized.", variant);
return ERROR_FLASH_OPER_UNSUPPORTED;
}
return ERROR_OK;
}
FLASH_BANK_COMMAND_HANDLER(fm4_flash_bank_command)
{
struct fm4_flash_bank *fm4_bank;
const char *variant;
int ret;
if (CMD_ARGC < 7)
return ERROR_COMMAND_SYNTAX_ERROR;
variant = CMD_ARGV[6];
fm4_bank = malloc(sizeof(struct fm4_flash_bank));
if (!fm4_bank)
return ERROR_FLASH_OPERATION_FAILED;
fm4_bank->probed = false;
fm4_bank->macro_nr = (bank->base == 0x00000000) ? 0 : 1;
bank->driver_priv = fm4_bank;
if (fm4_name_match(variant, "MB9BF"))
ret = mb9bf_bank_setup(bank, variant);
else if (fm4_name_match(variant, "S6E2Cx"))
ret = s6e2cc_bank_setup(bank, variant);
else if (fm4_name_match(variant, "S6E2Dx")) {
fm4_bank->variant = s6e2dx;
ret = ERROR_OK;
} else {
LOG_WARNING("Family %s not recognized.", variant);
ret = ERROR_FLASH_OPER_UNSUPPORTED;
}
if (ret != ERROR_OK)
free(fm4_bank);
return ret;
}
static const struct command_registration fm4_exec_command_handlers[] = {
COMMAND_REGISTRATION_DONE
};
static const struct command_registration fm4_command_handlers[] = {
{
.name = "fm4",
.mode = COMMAND_ANY,
.help = "fm4 flash command group",
.usage = "",
.chain = fm4_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
struct flash_driver fm4_flash = {
.name = "fm4",
.commands = fm4_command_handlers,
.flash_bank_command = fm4_flash_bank_command,
.info = fm4_get_info_command,
.probe = fm4_probe,
.auto_probe = fm4_auto_probe,
.read = default_flash_read,
.erase = fm4_flash_erase,
.erase_check = default_flash_blank_check,
.write = fm4_flash_write,
.free_driver_priv = default_flash_free_driver_priv,
};
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