88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
#include <ultra64.h>
|
|
#include "functions.h"
|
|
#include "variables.h"
|
|
|
|
//THIS VALUE
|
|
#ifndef CORE2_CODE_CRC2
|
|
#define CORE2_CODE_CRC2 0x9E44C2DC
|
|
#endif
|
|
|
|
// bk_boot segment start (skipping entry function)
|
|
extern u8 boot_bk_boot_ROM_START[];
|
|
// bk_boot segment end
|
|
extern u8 boot_bk_boot_ROM_END[];
|
|
extern u8 crc_ROM_START[];
|
|
|
|
// bk_boot segment crc next word
|
|
s32 D_803727F0 = 0;
|
|
s32 core2_D_803727F4 = CORE2_CODE_CRC2;
|
|
s32 D_803727F8 = 0;
|
|
s32 D_803727FC = 0;
|
|
|
|
// bk_boot segment crc values
|
|
s32 D_80372800 = 0;
|
|
s32 D_80372804 = 0;
|
|
|
|
// bk_boot segment crc remaining words
|
|
s32 D_80372808 = 0;
|
|
|
|
// init bk_boot crc
|
|
void func_80356580(void) {
|
|
D_803727FC = (s32) boot_bk_boot_ROM_START;
|
|
D_80372800 = 0;
|
|
D_80372804 = -1;
|
|
D_80372808 = (s32) (boot_bk_boot_ROM_END - boot_bk_boot_ROM_START);
|
|
}
|
|
|
|
// advance bk_boot crc by one word
|
|
s32 func_803565BC(void) {
|
|
u32 crc1;
|
|
u32 crc2;
|
|
u8 romBytes[4];
|
|
u8 curByte;
|
|
|
|
if (D_803727FC != 0) {
|
|
if (D_80372808 != 0) {
|
|
crc1 = D_80372800;
|
|
crc2 = D_80372804;
|
|
osPiReadIo(D_803727FC, (u32*)romBytes);
|
|
curByte = romBytes[0];
|
|
crc1 += curByte;
|
|
crc2 ^= curByte << (crc1 & 0x17);
|
|
curByte = romBytes[1];
|
|
crc1 += curByte;
|
|
crc2 ^= curByte << (crc1 & 0x17);
|
|
curByte = romBytes[2];
|
|
crc1 += curByte;
|
|
crc2 ^= curByte << (crc1 & 0x17);
|
|
curByte = romBytes[3];
|
|
crc1 += curByte;
|
|
crc2 ^= curByte << (crc1 & 0x17);
|
|
D_80372800 = crc1;
|
|
D_80372804 = crc2;
|
|
D_803727FC = D_803727FC + 4;
|
|
D_80372808 = D_80372808 - 4;
|
|
} else {
|
|
D_803727FC = 0;
|
|
osPiReadIo((u32)crc_ROM_START + 0, &crc1);
|
|
if (crc1 != D_80372800)
|
|
return 0;
|
|
osPiReadIo((u32)crc_ROM_START + 4, &crc2);
|
|
if (crc2 != D_80372804)
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void func_80356714(void) {
|
|
func_80356580();
|
|
}
|
|
|
|
void func_80356734(void) {
|
|
func_803565BC();
|
|
if (func_803565BC() == 0) {
|
|
func_80295864(0x10);
|
|
}
|
|
}
|