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| /*
| * Copyright (c) 2020-2021 Shanghai Panchip Microelectronics Co.,Ltd.
| *
| * SPDX-License-Identifier: Apache-2.0
| */
|
| #include "flash_manager.h"
|
| static uint32_t m_erased_area;
|
| void fm_status_refresh(void)
| {
| m_erased_area = FLASH_AREA_IMAGE_START;
| }
|
| void fm_write_flash(unsigned int addr, unsigned char *buf, unsigned int len)
| {
| if ((addr + len) <= m_erased_area) { /* means the specified flash has be erased before */
| FMC_WriteStream(FLCTL, addr, buf, len); /* todo chao*/
| } else {
| if (FMC_EraseSector(FLCTL, m_erased_area) == 0) {
| m_erased_area += SECTOR_SIZE;
| FMC_WriteStream(FLCTL, addr, buf, len);
| } else {
| ASSERT;
| }
| }
| }
|
| int fm_read_flash(unsigned int addr, unsigned char *buf, unsigned int len)
| {
| return FMC_ReadStream(FLCTL, addr, CMD_FAST_READ, buf, len);
| }
|
| static void check_sum_add(uint32_t *init_val, uint8_t *val, uint16_t len)
| {
| for (uint16_t i =0 ; i < len; i++) {
| *init_val += *(val + i);
| }
| }
|
| int fm_image_make_invalid(uint32_t im_addr)
| {
| return FMC_EraseSector(FLCTL, im_addr);
| }
|
| static uint8_t read_value[256];
|
| void fm_image_move(uint32_t src_addr, uint32_t dst_addr)
| {
| uint32_t current_index = 0;
| image_header_t header;
|
| /* fm write to image area, should handle one time fm_status_refresh */
| fm_status_refresh();
|
| /* move header */
| fm_read_flash(src_addr, (unsigned char *)&header, sizeof(image_header_t));
| fm_write_flash(dst_addr, (unsigned char *)&header, sizeof(image_header_t));
| src_addr += sizeof(image_header_t);
| dst_addr += sizeof(image_header_t);
|
| header.ih_img_size += 40; /*smp signed related*/
| /* move completed image*/
| while(current_index < header.ih_img_size) {
| if (current_index + 256 <= header.ih_img_size){ /* remaining packets over than 256 bytes */
| fm_read_flash(src_addr + current_index, read_value, 256);
| fm_write_flash(dst_addr+ current_index, read_value, 256);
| current_index += 256;
| }
| else {
| fm_read_flash(src_addr + current_index, read_value, header.ih_img_size - current_index); /* remaining packets less than 256 bytes */
| fm_write_flash(dst_addr+ current_index, read_value, header.ih_img_size - current_index);
| current_index = header.ih_img_size;
| }
| }
| /* escape move at next time, should be make it invalid */
| fm_image_make_invalid(src_addr);
| }
|
| bool fm_image_completed_check(uint32_t im_addr)
| {
|
| uint32_t check_sum = 0;
| uint32_t current_index = 0;
| image_header_t header;
|
| fm_read_flash(im_addr, (unsigned char *)&header, sizeof(image_header_t));
|
| if (header.ih_img_size > FLASH_IMAGE_MAX_SIZE || header.ih_img_size <= 256) /* image size should be obtained a basic rules */
| return false;
|
| im_addr += sizeof(image_header_t);
|
| while(current_index < header.ih_img_size) {
| if (current_index + 256 <= header.ih_img_size){ /* remaining packets over than 256 bytes */
| fm_read_flash(im_addr + current_index, read_value, 256);
| current_index += 256;
| check_sum_add(&check_sum, read_value, 256);
| }
| else {
| fm_read_flash(im_addr + current_index, read_value, header.ih_img_size - current_index); /* remaining packets less than 256 bytes */
| check_sum_add(&check_sum, read_value, header.ih_img_size - current_index);
| current_index = header.ih_img_size;
| }
| }
|
| if (header.checksum == check_sum) {
| return true;
| } else
| return false;
| }
|
| #if false
| const uint8_t flash_image[] = {
| 0x1, 0x2, 0x3, 0x4,
| 0x1, 0x1, 0x0, 0x0,
| 0x7B, 0x5, 0x0, 0x0,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA,
| 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
| };
|
| void t_fm_image_completed_check_test(void)
| {
| bool ret;
|
| ret = fm_image_completed_check((uint32_t)flash_image);
| if (ret) {
| while(1);
| }
| }
| #endif
|
|
