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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2009 Øyvind Harboe *
* oyvind.harboe@zylin.com *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include <target/image.h>
#include "hello.h"
struct faux_flash_bank {
struct target *target;
uint8_t *memory;
uint32_t start_address;
};
static const int sector_size = 0x10000;
/* flash bank faux <base> <size> <chip_width> <bus_width> <target#> <driverPath>
*/
FLASH_BANK_COMMAND_HANDLER(faux_flash_bank_command)
{
struct faux_flash_bank *info;
if (CMD_ARGC < 6)
return ERROR_COMMAND_SYNTAX_ERROR;
info = malloc(sizeof(struct faux_flash_bank));
if (!info) {
LOG_ERROR("no memory for flash bank info");
return ERROR_FAIL;
}
info->memory = malloc(bank->size);
if (!info->memory) {
free(info);
LOG_ERROR("no memory for flash bank info");
return ERROR_FAIL;
}
bank->driver_priv = info;
/* Use 0x10000 as a fixed sector size. */
uint32_t offset = 0;
bank->num_sectors = bank->size/sector_size;
bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
for (unsigned int i = 0; i < bank->num_sectors; i++) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = sector_size;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 0;
}
info->target = get_target(CMD_ARGV[5]);
if (!info->target) {
LOG_ERROR("target '%s' not defined", CMD_ARGV[5]);
free(info->memory);
free(info);
return ERROR_FAIL;
}
return ERROR_OK;
}
static int faux_erase(struct flash_bank *bank, unsigned int first,
unsigned int last)
{
struct faux_flash_bank *info = bank->driver_priv;
memset(info->memory + first*sector_size, 0xff, sector_size*(last-first + 1));
return ERROR_OK;
}
static int faux_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct faux_flash_bank *info = bank->driver_priv;
memcpy(info->memory + offset, buffer, count);
return ERROR_OK;
}
static int faux_info(struct flash_bank *bank, struct command_invocation *cmd)
{
command_print_sameline(cmd, "faux flash driver");
return ERROR_OK;
}
static int faux_probe(struct flash_bank *bank)
{
return ERROR_OK;
}
static const struct command_registration faux_command_handlers[] = {
{
.name = "faux",
.mode = COMMAND_ANY,
.help = "faux flash command group",
.chain = hello_command_handlers,
.usage = "",
},
COMMAND_REGISTRATION_DONE
};
const struct flash_driver faux_flash = {
.name = "faux",
.commands = faux_command_handlers,
.flash_bank_command = faux_flash_bank_command,
.erase = faux_erase,
.write = faux_write,
.read = default_flash_read,
.probe = faux_probe,
.auto_probe = faux_probe,
.erase_check = default_flash_blank_check,
.info = faux_info,
.free_driver_priv = default_flash_free_driver_priv,
};