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