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iROM?BL1??????

iROM?????

iROM????????????????????????????????????????

???iROM???????????????????????????????????

BL1????

BL1????????????????????

???BL1????16???????????????????

????

????????????????????????????????????

; ??????
ldr r0, =0xE010_E81C
unsigned int* p = 0xE010_E81C;
; ?????
ldr r1, [r0]
unsigned int val = *p;
; ???????????
orr r1, r1, #0x300
val = val | 0x300;
orr r1, r1, #0x1
val = val | 0x1;
; ???????
str r1, [r0]
*p = val;

?????

?????????????????????????????????mkv210_image.c?????????

#ifndef __MKV210_CHECKSUM_H__
#define __MKV210_CHECKSUM_H__
#include 
   
    
#define CHECKSUM_MAGIC 0x12345678
#define CHECKSUM_SIZE 32
// ????????????
int compute_checksum(const char* image_path, uint32_t** checksum) {
    *checksum = malloc(CHECKSUM_SIZE * sizeof(uint32_t));
    FILE* fp = fopen(image_path, "rb");
    if (!fp) {
        return -1;
    }
    
    uint32_t sum = 0;
    uint8_t buffer[1024];
    
    while (fread(buffer, sizeof(uint8_t), 1024, fp) != 0) {
        sum += crc32(buffer, 1024);
    }
    
    memcpy(*checksum, (uint32_t*)(&sum), CHECKSUM_SIZE);
    fclose(fp);
    return 0;
}
#endif
   

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iROM?BL1????????????????????????????????????????????????????????????????

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