553 lines
14 KiB
C
553 lines
14 KiB
C
/*
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* Copyright (c) 2018 Nordic Semiconductor ASA
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* Copyright (c) 2020 Cypress Semiconductor Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*******************************************************************************/
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#ifdef MCUBOOT_HAVE_ASSERT_H
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#include "mcuboot_config/mcuboot_assert.h"
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#else
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#include <assert.h>
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#endif
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdint.h>
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#include "mcuboot_config/mcuboot_config.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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#include "cy_pdl.h"
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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#include "cy_smif_psoc6.h"
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#endif
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/*
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* For now, we only support one flash device.
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*
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* Pick a random device ID for it that's unlikely to collide with
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* anything "real".
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*/
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#define FLASH_DEVICE_ID 111
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#define FLASH_MAP_ENTRY_MAGIC 0xd00dbeef
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#define FLASH_AREA_IMAGE_SECTOR_SIZE FLASH_AREA_IMAGE_SCRATCH_SIZE
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#ifndef CY_BOOTLOADER_START_ADDRESS
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#define CY_BOOTLOADER_START_ADDRESS (0x10000000)
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#endif
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#ifndef CY_BOOT_INTERNAL_FLASH_ERASE_VALUE
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/* This is the value of internal flash bytes after an erase */
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#define CY_BOOT_INTERNAL_FLASH_ERASE_VALUE (0x00)
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#endif
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#ifndef CY_BOOT_EXTERNAL_FLASH_ERASE_VALUE
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/* This is the value of external flash bytes after an erase */
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#define CY_BOOT_EXTERNAL_FLASH_ERASE_VALUE (0xff)
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#endif
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#ifdef CY_FLASH_MAP_EXT_DESC
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/* Nothing to be there when external FlashMap Descriptors are used */
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#else
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static struct flash_area bootloader =
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{
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.fa_id = FLASH_AREA_BOOTLOADER,
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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.fa_off = CY_BOOTLOADER_START_ADDRESS,
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.fa_size = CY_BOOT_BOOTLOADER_SIZE
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};
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static struct flash_area primary_1 =
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{
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.fa_id = FLASH_AREA_IMAGE_PRIMARY(0),
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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.fa_off = CY_FLASH_BASE + CY_BOOT_BOOTLOADER_SIZE,
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.fa_size = CY_BOOT_PRIMARY_1_SIZE
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};
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#ifndef CY_BOOT_USE_EXTERNAL_FLASH
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static struct flash_area secondary_1 =
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{
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.fa_id = FLASH_AREA_IMAGE_SECONDARY(0),
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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.fa_off = CY_FLASH_BASE +\
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CY_BOOT_BOOTLOADER_SIZE +\
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CY_BOOT_PRIMARY_1_SIZE,
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.fa_size = CY_BOOT_SECONDARY_1_SIZE
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};
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#else
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static struct flash_area secondary_1 =
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{
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.fa_id = FLASH_AREA_IMAGE_SECONDARY(0),
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.fa_device_id = FLASH_DEVICE_EXTERNAL_FLASH(CY_BOOT_EXTERNAL_DEVICE_INDEX),
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.fa_off = CY_SMIF_BASE_MEM_OFFSET,
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.fa_size = CY_BOOT_SECONDARY_1_SIZE
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};
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#endif
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#if (MCUBOOT_IMAGE_NUMBER == 2) /* if dual-image */
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static struct flash_area primary_2 =
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{
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.fa_id = FLASH_AREA_IMAGE_PRIMARY(1),
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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.fa_off = CY_FLASH_BASE +\
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CY_BOOT_BOOTLOADER_SIZE +\
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CY_BOOT_PRIMARY_1_SIZE +\
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CY_BOOT_SECONDARY_1_SIZE,
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.fa_size = CY_BOOT_PRIMARY_2_SIZE
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};
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static struct flash_area secondary_2 =
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{
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.fa_id = FLASH_AREA_IMAGE_SECONDARY(1),
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/* it is for external flash memory
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.fa_device_id = FLASH_DEVICE_EXTERNAL_FLASH(CY_BOOT_EXTERNAL_DEVICE_INDEX), */
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#ifndef CY_BOOT_USE_EXTERNAL_FLASH
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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.fa_off = CY_FLASH_BASE +\
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CY_BOOT_BOOTLOADER_SIZE +\
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CY_BOOT_PRIMARY_1_SIZE +\
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CY_BOOT_SECONDARY_1_SIZE +\
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CY_BOOT_PRIMARY_2_SIZE,
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#else
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.fa_device_id = FLASH_DEVICE_EXTERNAL_FLASH(CY_BOOT_EXTERNAL_DEVICE_INDEX),
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.fa_off = CY_SMIF_BASE_MEM_OFFSET + 0x40000,
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#endif
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.fa_size = CY_BOOT_SECONDARY_2_SIZE
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};
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#endif
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#endif
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#ifdef MCUBOOT_SWAP_USING_SCRATCH
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static struct flash_area scratch =
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{
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.fa_id = FLASH_AREA_IMAGE_SCRATCH,
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.fa_device_id = FLASH_DEVICE_INTERNAL_FLASH,
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#if (MCUBOOT_IMAGE_NUMBER == 1) /* if single-image */
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.fa_off = CY_FLASH_BASE +\
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CY_BOOT_BOOTLOADER_SIZE +\
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CY_BOOT_PRIMARY_1_SIZE +\
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CY_BOOT_SECONDARY_1_SIZE,
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#elif (MCUBOOT_IMAGE_NUMBER == 2) /* if dual-image */
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.fa_off = CY_FLASH_BASE +\
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CY_BOOT_BOOTLOADER_SIZE +\
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CY_BOOT_PRIMARY_1_SIZE +\
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CY_BOOT_SECONDARY_1_SIZE +\
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CY_BOOT_PRIMARY_2_SIZE +\
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CY_BOOT_SECONDARY_2_SIZE,
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#endif
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.fa_size = CY_BOOT_SCRATCH_SIZE
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};
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#endif
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#ifdef CY_FLASH_MAP_EXT_DESC
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/* Use external Flash Map Descriptors */
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extern struct flash_area *boot_area_descs[];
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#else
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struct flash_area *boot_area_descs[] =
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{
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&bootloader,
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&primary_1,
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&secondary_1,
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#if (MCUBOOT_IMAGE_NUMBER == 2) /* if dual-image */
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&primary_2,
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&secondary_2,
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#endif
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#ifdef MCUBOOT_SWAP_USING_SCRATCH
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&scratch,
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#endif
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NULL
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};
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#endif
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/* Returns device flash start based on supported fa_id */
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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_INTERNAL_FLASH) {
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BOOT_LOG_ERR("invalid flash ID %d; expected %d",
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fd_id, FLASH_DEVICE_INTERNAL_FLASH);
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return -1;
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}
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*ret = CY_FLASH_BASE;
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return 0;
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}
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/* Opens the area for use. id is one of the `fa_id`s */
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int flash_area_open(uint8_t id, const struct flash_area **fa)
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{
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int ret = -1;
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uint32_t i = 0;
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while(NULL != boot_area_descs[i])
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{
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if(id == boot_area_descs[i]->fa_id)
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{
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*fa = boot_area_descs[i];
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ret = 0;
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break;
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}
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i++;
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}
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return ret;
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}
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void flash_area_close(const struct flash_area *fa)
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{
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(void)fa;/* Nothing to do there */
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}
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/*
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* Reads `len` bytes of flash memory at `off` to the buffer at `dst`
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*/
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int flash_area_read(const struct flash_area *fa, uint32_t off, void *dst,
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uint32_t len)
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{
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int rc = 0;
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size_t addr;
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/* check if requested offset not less then flash area (fa) start */
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assert(off < fa->fa_off);
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assert(off + len < fa->fa_off);
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/* convert to absolute address inside a device*/
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addr = fa->fa_off + off;
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if (fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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/* flash read by simple memory copying */
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memcpy((void *)dst, (const void*)addr, (size_t)len);
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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rc = psoc6_smif_read(fa, addr, dst, len);
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}
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#endif
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else
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{
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/* incorrect/non-existing flash device id */
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rc = -1;
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}
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if (rc != 0) {
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BOOT_LOG_ERR("Flash area read error, rc = %d", (int)rc);
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}
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return rc;
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}
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/*
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* Writes `len` bytes of flash memory at `off` from the buffer at `src`
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*/
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int flash_area_write(const struct flash_area *fa, uint32_t off,
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const void *src, uint32_t len)
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{
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cy_en_flashdrv_status_t rc = CY_FLASH_DRV_SUCCESS;
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size_t write_start_addr;
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size_t write_end_addr;
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const uint32_t * row_ptr = NULL;
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assert(off < fa->fa_off);
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assert(off + len < fa->fa_off);
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/* convert to absolute address inside a device */
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write_start_addr = fa->fa_off + off;
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write_end_addr = fa->fa_off + off + len;
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if (fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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uint32_t row_number = 0;
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uint32_t row_addr = 0;
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assert(!(len % CY_FLASH_SIZEOF_ROW));
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assert(!(write_start_addr % CY_FLASH_SIZEOF_ROW));
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row_number = (write_end_addr - write_start_addr) / CY_FLASH_SIZEOF_ROW;
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row_addr = write_start_addr;
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row_ptr = (uint32_t *) src;
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for (uint32_t i = 0; i < row_number; i++)
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{
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rc = Cy_Flash_WriteRow(row_addr, row_ptr);
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row_addr += (uint32_t) CY_FLASH_SIZEOF_ROW;
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row_ptr = row_ptr + CY_FLASH_SIZEOF_ROW / 4;
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}
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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rc = psoc6_smif_write(fa, write_start_addr, src, len);
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}
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#endif
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else
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{
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/* incorrect/non-existing flash device id */
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rc = -1;
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}
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return (int) rc;
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}
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/*< Erases `len` bytes of flash memory at `off` */
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int flash_area_erase(const struct flash_area *fa, uint32_t off, uint32_t len)
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{
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cy_en_flashdrv_status_t rc = CY_FLASH_DRV_SUCCESS;
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size_t erase_start_addr;
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size_t erase_end_addr;
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assert(off < fa->fa_off);
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assert(off + len < fa->fa_off);
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assert(!(len % CY_FLASH_SIZEOF_ROW));
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/* convert to absolute address inside a device*/
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erase_start_addr = fa->fa_off + off;
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erase_end_addr = fa->fa_off + off + len;
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if (fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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int row_number = 0;
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uint32_t row_addr = 0;
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row_number = (erase_end_addr - erase_start_addr) / CY_FLASH_SIZEOF_ROW;
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while (row_number != 0)
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{
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row_number--;
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row_addr = erase_start_addr + row_number * (uint32_t) CY_FLASH_SIZEOF_ROW;
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rc = Cy_Flash_EraseRow(row_addr);
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}
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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rc = psoc6_smif_erase(erase_start_addr, len);
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}
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#endif
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else
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{
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/* incorrect/non-existing flash device id */
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rc = -1;
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}
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return (int) rc;
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}
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/*< Returns this `flash_area`s alignment */
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size_t flash_area_align(const struct flash_area *fa)
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{
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int ret = -1;
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if (fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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ret = CY_FLASH_ALIGN;
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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return qspi_get_prog_size();
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}
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#endif
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else
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{
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/* incorrect/non-existing flash device id */
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ret = -1;
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}
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return ret;
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}
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#ifdef MCUBOOT_USE_FLASH_AREA_GET_SECTORS
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/*< Initializes an array of flash_area elements for the slot's sectors */
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int flash_area_to_sectors(int idx, int *cnt, struct flash_area *fa)
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{
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int rc = 0;
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if (fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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(void)idx;
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(void)cnt;
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rc = 0;
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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(void)idx;
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(void)cnt;
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rc = 0;
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}
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#endif
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else
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{
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/* incorrect/non-existing flash device id */
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rc = -1;
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}
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return rc;
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}
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#endif
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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 -1; /* 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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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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uint8_t flash_area_erased_val(const struct flash_area *fap)
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{
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int ret = 0;
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if (fap->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
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{
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ret = CY_BOOT_INTERNAL_FLASH_ERASE_VALUE;
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}
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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else if ((fap->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
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{
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ret = CY_BOOT_EXTERNAL_FLASH_ERASE_VALUE;
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}
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#endif
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else
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{
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assert(false) ;
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}
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return ret ;
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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 *mem_dest;
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int rc;
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mem_dest = (uint8_t *)dst;
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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 (uint8_t i = 0; i < len; i++) {
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if (mem_dest[i] != flash_area_erased_val(fa)) {
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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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#ifdef MCUBOOT_USE_FLASH_AREA_GET_SECTORS
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int flash_area_get_sectors(int idx, uint32_t *cnt, struct flash_sector *ret)
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{
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int rc = 0;
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uint32_t i = 0;
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struct flash_area *fa = NULL;
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while(NULL != boot_area_descs[i])
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{
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if(idx == boot_area_descs[i]->fa_id)
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{
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fa = boot_area_descs[i];
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break;
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}
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i++;
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}
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if(NULL != boot_area_descs[i])
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{
|
|
size_t sector_size = 0;
|
|
|
|
if(fa->fa_device_id == FLASH_DEVICE_INTERNAL_FLASH)
|
|
{
|
|
sector_size = CY_FLASH_SIZEOF_ROW;
|
|
}
|
|
#ifdef CY_BOOT_USE_EXTERNAL_FLASH
|
|
else if((fa->fa_device_id & FLASH_DEVICE_EXTERNAL_FLAG) == FLASH_DEVICE_EXTERNAL_FLAG)
|
|
{
|
|
/* implement for SMIF */
|
|
/* lets assume they are equal */
|
|
sector_size = CY_FLASH_SIZEOF_ROW;
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
rc = -1;
|
|
}
|
|
|
|
if(0 == rc)
|
|
{
|
|
uint32_t addr = 0;
|
|
size_t sectors_n = 0;
|
|
|
|
sectors_n = (fa->fa_size + (sector_size - 1)) / sector_size;
|
|
assert(sectors_n <= *cnt);
|
|
|
|
addr = fa->fa_off;
|
|
for(i = 0; i < sectors_n; i++)
|
|
{
|
|
ret[i].fs_size = sector_size ;
|
|
ret[i].fs_off = addr ;
|
|
addr += sector_size ;
|
|
}
|
|
|
|
*cnt = sectors_n;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
rc = -1;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
#endif
|