reboot.c-Dateireferenz

#include "stdlib.h"
#include "stddef.h"
#include "stdio.h"
#include "string.h"
#include "lolevel.h"

Include-Abhängigkeitsdiagramm für reboot.c:

gehe zum Quellcode dieser Datei

Makrodefinitionen
#define	LOW_LEVEL

Funktionen
int	reboot (const char *bootfile)

Makro-Dokumentation

#define LOW_LEVEL

Definiert in Zeile 5 der Datei reboot.c.

Dokumentation der Funktionen

int reboot

(

const char *

bootfile)

Definiert in Zeile 23 der Datei reboot.c.

                                 {
#ifndef THUMB_FW
    if(bootfile == NULL)
#endif
    {
        _TurnOffDisplay();
        _Restart(0);
    }
#ifndef THUMB_FW
    int namelen=strlen(bootfile);
    if(namelen > 3 && (strncmp(bootfile + namelen - 4,".FI",3) == 0)) {
        _reboot_fw_update(bootfile);
        // if _reboot_fw_update returns, it failed or is not implemented
        return 0;
    }

    int fd;
    int size;
    int rcnt;
    char *buf;
    unsigned data_tcm;
    void __attribute__((noreturn)) (*canon_copy_and_restart)(char *dst, char *src, unsigned length,char *start);

    // use open/read etc since it takes less mem, boot image might be large
    fd = open(bootfile,O_RDONLY,0);
    if(fd == -1) {
        return 0;
    }
    size = lseek(fd,0,SEEK_END);
    // error or less than 1 instruction
    if(size < 4) {
        return 0;
    }
    buf = umalloc(size);
    if(!buf) {
        close(fd);
        return 0;
    }
    lseek(fd,0,SEEK_SET);
    rcnt = read(fd, buf, size);
    close(fd);
    if(rcnt != size) {
        ufree(buf);
        return 0;
    }
    asm volatile(
        "MRC        p15, 0, %0, c9, c1, 0\n"
        : "=r" (data_tcm)
    ); 
    data_tcm &= 0xFFFFF000;
    canon_copy_and_restart = (void *)(*(unsigned *)data_tcm);
    if( ((unsigned)canon_copy_and_restart & 0xFFFF0000) != 0xFFFF0000) {
        ufree(buf);
        return 0;
    }
    _TurnOffDisplay();
    _Restart(7);
    canon_copy_and_restart((void *)0x1900,buf,size,(void *)0x1900);
#else
    (void)bootfile;
    return 0;
#endif // THUMB_FW
}