236 lines
6.6 KiB
C
236 lines
6.6 KiB
C
/***************************************************************************
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* Copyright (C) 2010 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "imp.h"
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static struct flash_bank *virtual_get_master_bank(struct flash_bank *bank)
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{
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struct flash_bank *master_bank;
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master_bank = get_flash_bank_by_name_noprobe(bank->driver_priv);
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if (master_bank == NULL)
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LOG_ERROR("master flash bank '%s' does not exist", (char *)bank->driver_priv);
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return master_bank;
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}
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static void virtual_update_bank_info(struct flash_bank *bank)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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if (master_bank == NULL)
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return;
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/* update the info we do not have */
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bank->size = master_bank->size;
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bank->chip_width = master_bank->chip_width;
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bank->bus_width = master_bank->bus_width;
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bank->default_padded_value = master_bank->default_padded_value;
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bank->num_sectors = master_bank->num_sectors;
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bank->sectors = master_bank->sectors;
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}
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FLASH_BANK_COMMAND_HANDLER(virtual_flash_bank_command)
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{
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if (CMD_ARGC < 7)
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return ERROR_COMMAND_SYNTAX_ERROR;
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/* get the master flash bank */
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const char *bank_name = CMD_ARGV[6];
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struct flash_bank *master_bank = get_flash_bank_by_name_noprobe(bank_name);
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if (master_bank == NULL) {
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LOG_ERROR("master flash bank '%s' does not exist", bank_name);
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return ERROR_FLASH_OPERATION_FAILED;
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}
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/* save master bank name - use this to get settings later */
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bank->driver_priv = strdup(bank_name);
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return ERROR_OK;
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}
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static int virtual_protect(struct flash_bank *bank, int set, int first, int last)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->protect(master_bank, set, first, last);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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static int virtual_protect_check(struct flash_bank *bank)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->protect_check(master_bank);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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static int virtual_erase(struct flash_bank *bank, int first, int last)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->erase(master_bank, first, last);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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static int virtual_write(struct flash_bank *bank, const uint8_t *buffer,
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uint32_t offset, uint32_t count)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->write(master_bank, buffer, offset, count);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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static int virtual_probe(struct flash_bank *bank)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->probe(master_bank);
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if (retval != ERROR_OK)
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return retval;
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/* update the info we do not have */
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virtual_update_bank_info(bank);
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return ERROR_OK;
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}
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static int virtual_auto_probe(struct flash_bank *bank)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->auto_probe(master_bank);
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if (retval != ERROR_OK)
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return retval;
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/* update the info we do not have */
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virtual_update_bank_info(bank);
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return ERROR_OK;
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}
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static int virtual_info(struct flash_bank *bank, char *buf, int buf_size)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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snprintf(buf, buf_size, "%s driver for flash bank %s at 0x%8.8" PRIx32 "",
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bank->driver->name, master_bank->name, master_bank->base);
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return ERROR_OK;
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}
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static int virtual_blank_check(struct flash_bank *bank)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->erase_check(master_bank);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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static int virtual_flash_read(struct flash_bank *bank,
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uint8_t *buffer, uint32_t offset, uint32_t count)
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{
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struct flash_bank *master_bank = virtual_get_master_bank(bank);
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int retval;
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if (master_bank == NULL)
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return ERROR_FLASH_OPERATION_FAILED;
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/* call master handler */
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retval = master_bank->driver->read(master_bank, buffer, offset, count);
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if (retval != ERROR_OK)
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return retval;
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return ERROR_OK;
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}
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struct flash_driver virtual_flash = {
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.name = "virtual",
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.flash_bank_command = virtual_flash_bank_command,
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.erase = virtual_erase,
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.protect = virtual_protect,
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.write = virtual_write,
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.read = virtual_flash_read,
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.probe = virtual_probe,
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.auto_probe = virtual_auto_probe,
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.erase_check = virtual_blank_check,
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.protect_check = virtual_protect_check,
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.info = virtual_info,
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};
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