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/***************************************************************************
* Copyright (C) 2010 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* 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, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
static struct flash_bank *virtual_get_master_bank(struct flash_bank *bank)
{
struct flash_bank *master_bank;
master_bank = get_flash_bank_by_name_noprobe(bank->driver_priv);
if (!master_bank)
LOG_ERROR("master flash bank '%s' does not exist", (char *)bank->driver_priv);
return master_bank;
}
static void virtual_update_bank_info(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
if (!master_bank)
return;
/* update the info we do not have */
bank->size = master_bank->size;
bank->chip_width = master_bank->chip_width;
bank->bus_width = master_bank->bus_width;
bank->erased_value = master_bank->erased_value;
bank->default_padded_value = master_bank->default_padded_value;
bank->write_start_alignment = master_bank->write_start_alignment;
bank->write_end_alignment = master_bank->write_end_alignment;
bank->minimal_write_gap = master_bank->minimal_write_gap;
bank->num_sectors = master_bank->num_sectors;
bank->sectors = master_bank->sectors;
bank->num_prot_blocks = master_bank->num_prot_blocks;
bank->prot_blocks = master_bank->prot_blocks;
}
FLASH_BANK_COMMAND_HANDLER(virtual_flash_bank_command)
{
if (CMD_ARGC < 7)
return ERROR_COMMAND_SYNTAX_ERROR;
/* get the master flash bank */
const char *bank_name = CMD_ARGV[6];
struct flash_bank *master_bank = get_flash_bank_by_name_noprobe(bank_name);
if (!master_bank) {
LOG_ERROR("master flash bank '%s' does not exist", bank_name);
return ERROR_FLASH_OPERATION_FAILED;
}
/* save master bank name - use this to get settings later */
bank->driver_priv = strdup(bank_name);
return ERROR_OK;
}
static int virtual_protect(struct flash_bank *bank, int set, unsigned int first,
unsigned int last)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
return flash_driver_protect(master_bank, set, first, last);
}
static int virtual_protect_check(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
if (master_bank->driver->protect_check == NULL)
return ERROR_FLASH_OPER_UNSUPPORTED;
/* call master handler */
return master_bank->driver->protect_check(master_bank);
}
static int virtual_erase(struct flash_bank *bank, unsigned int first,
unsigned int last)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->erase(master_bank, first, last);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int virtual_write(struct flash_bank *bank, const uint8_t *buffer,
uint32_t offset, uint32_t count)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->write(master_bank, buffer, offset, count);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int virtual_probe(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->probe(master_bank);
if (retval != ERROR_OK)
return retval;
/* update the info we do not have */
virtual_update_bank_info(bank);
return ERROR_OK;
}
static int virtual_auto_probe(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->auto_probe(master_bank);
if (retval != ERROR_OK)
return retval;
/* update the info we do not have */
virtual_update_bank_info(bank);
return ERROR_OK;
}
static int virtual_info(struct flash_bank *bank, struct command_invocation *cmd)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
command_print_sameline(cmd, "%s driver for flash bank %s at " TARGET_ADDR_FMT,
bank->driver->name, master_bank->name, master_bank->base);
return ERROR_OK;
}
static int virtual_blank_check(struct flash_bank *bank)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->erase_check(master_bank);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static int virtual_flash_read(struct flash_bank *bank,
uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct flash_bank *master_bank = virtual_get_master_bank(bank);
int retval;
if (!master_bank)
return ERROR_FLASH_OPERATION_FAILED;
/* call master handler */
retval = master_bank->driver->read(master_bank, buffer, offset, count);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
const struct flash_driver virtual_flash = {
.name = "virtual",
.flash_bank_command = virtual_flash_bank_command,
.erase = virtual_erase,
.protect = virtual_protect,
.write = virtual_write,
.read = virtual_flash_read,
.probe = virtual_probe,
.auto_probe = virtual_auto_probe,
.erase_check = virtual_blank_check,
.protect_check = virtual_protect_check,
.info = virtual_info,
.free_driver_priv = default_flash_free_driver_priv,
};
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