133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* Copyright (c) 2015 Runtime Inc
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr.h>
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#include <flash.h>
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#include "target.h"
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#include <flash_map_backend/flash_map_backend.h>
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#include <sysflash/sysflash.h>
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#include "bootutil/bootutil_log.h"
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MCUBOOT_LOG_MODULE_DECLARE(mcuboot);
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#if (!defined(CONFIG_XTENSA) && defined(DT_FLASH_DEV_NAME))
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#define FLASH_DEVICE_ID SOC_FLASH_0_ID
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#define FLASH_DEVICE_BASE CONFIG_FLASH_BASE_ADDRESS
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#elif (defined(CONFIG_XTENSA) && defined(DT_JEDEC_SPI_NOR_0_LABEL))
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#define FLASH_DEVICE_ID SPI_FLASH_0_ID
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#define FLASH_DEVICE_BASE 0
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#else
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#error "FLASH_DEVICE_ID could not be determined"
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#endif
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static struct device *flash_dev;
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struct device *flash_device_get_binding(char *dev_name)
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{
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if (!flash_dev) {
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flash_dev = device_get_binding(dev_name);
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}
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return flash_dev;
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}
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int flash_device_base(uint8_t fd_id, uintptr_t *ret)
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{
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if (fd_id != FLASH_DEVICE_ID) {
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BOOT_LOG_ERR("invalid flash ID %d; expected %d",
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fd_id, FLASH_DEVICE_ID);
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return -EINVAL;
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}
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*ret = FLASH_DEVICE_BASE;
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return 0;
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}
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/*
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* This depends on the mappings defined in sysflash.h.
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* MCUBoot uses continuous numbering for the primary slot, the secondary slot,
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* and the scratch while zephyr might number it differently.
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*/
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int flash_area_id_from_multi_image_slot(int image_index, int slot)
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{
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switch (slot) {
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case 0: return FLASH_AREA_IMAGE_PRIMARY(image_index);
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case 1: return FLASH_AREA_IMAGE_SECONDARY(image_index);
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case 2: return FLASH_AREA_IMAGE_SCRATCH;
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}
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return -EINVAL; /* flash_area_open will fail on that */
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}
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int flash_area_id_from_image_slot(int slot)
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{
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return flash_area_id_from_multi_image_slot(0, slot);
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}
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int flash_area_id_to_multi_image_slot(int image_index, int area_id)
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{
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if (area_id == FLASH_AREA_IMAGE_PRIMARY(image_index)) {
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return 0;
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}
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if (area_id == FLASH_AREA_IMAGE_SECONDARY(image_index)) {
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return 1;
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}
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BOOT_LOG_ERR("invalid flash area ID");
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return -1;
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}
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int flash_area_id_to_image_slot(int area_id)
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{
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return flash_area_id_to_multi_image_slot(0, area_id);
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}
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int flash_area_sector_from_off(off_t off, struct flash_sector *sector)
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{
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int rc;
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struct flash_pages_info page;
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rc = flash_get_page_info_by_offs(flash_dev, off, &page);
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if (rc) {
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return rc;
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}
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sector->fs_off = page.start_offset;
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sector->fs_size = page.size;
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return rc;
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}
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#define ERASED_VAL 0xff
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uint8_t flash_area_erased_val(const struct flash_area *fap)
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{
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(void)fap;
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return ERASED_VAL;
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}
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int flash_area_read_is_empty(const struct flash_area *fa, uint32_t off,
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void *dst, uint32_t len)
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{
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uint8_t i;
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uint8_t *u8dst;
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int rc;
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rc = flash_area_read(fa, off, dst, len);
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if (rc) {
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return -1;
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}
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for (i = 0, u8dst = (uint8_t *)dst; i < len; i++) {
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if (u8dst[i] != ERASED_VAL) {
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return 0;
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}
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}
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return 1;
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}
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