amt630hv160-sdk-release/amt630hv160-freertos-beta/ArkmicroFiles/libboard-amt630hv160/source/sysinfo.c

#include <stdio.h>
#include <string.h>

#include "FreeRTOS.h"
#include "board.h"
#include "sfud.h"
#include "sysinfo.h"
#include "crc.h"
#if DEVICE_TYPE_SELECT == EMMC_FLASH
#include "mmcsd_core.h"
#endif

#pragma data_alignment=4
static SysInfo sysinfo;

int ReadSysInfo(void)
{
	unsigned int checksum;

#if DEVICE_TYPE_SELECT != EMMC_FLASH
	sfud_flash *sflash = sfud_get_device(0);

	sfud_read(sflash, SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#else
	emmc_read(SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#endif
	checksum = xcrc32((unsigned char*)&sysinfo, sizeof(SysInfo) - 4, 0xffffffff, HARD_CALC_CRC);
	if (checksum == sysinfo.checksum)
		return 0;
#if DEVICE_TYPE_SELECT != EMMC_FLASH
	sfud_read(sflash, SYSINFO_B_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#else
	emmc_read(SYSINFO_B_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#endif
	checksum = xcrc32((unsigned char*)&sysinfo, sizeof(SysInfo) - 4, 0xffffffff, HARD_CALC_CRC);
	if (checksum == sysinfo.checksum) {
		/* copy sysinfo to flash offset SYSINFO_OFFSET */
#if DEVICE_TYPE_SELECT != EMMC_FLASH
		sfud_erase_write(sflash, SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#else
		emmc_write(SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#endif
		return 0;
	}

	printf("amt630hv160 %s fail, please update before retry again.\n", __func__);
	while(1);
}

SysInfo *GetSysInfo(void)
{
	return &sysinfo;
}

void SaveSysInfo(void)
{
	sysinfo.checksum = xcrc32((unsigned char*)&sysinfo, sizeof(SysInfo) - 4, 0xffffffff, HARD_CALC_CRC);
#if DEVICE_TYPE_SELECT != EMMC_FLASH
	sfud_flash *sflash = sfud_get_device(0);
	if(sflash) {
		sfud_erase_write(sflash, SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
		sfud_erase_write(sflash, SYSINFO_B_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
	}
#else
	emmc_write(SYSINFO_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
	emmc_write(SYSINFO_B_OFFSET, sizeof(SysInfo), (void*)&sysinfo);
#endif
}