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panic if the boot2 patch to launch a title fails make the patch more generic so it works on boot2v4

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This commit is contained in:
bushing 2009-05-17 23:42:21 -07:00
parent cdf5a3c623
commit 950adf002f
2 changed files with 12 additions and 6 deletions
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17
boot2.c
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@ -19,6 +19,7 @@ Copyright (C) 2009 Andre Heider "dhewg" <dhewg@wiibrew.org>
#include "gecko.h" #include "gecko.h"
#include "powerpc.h" #include "powerpc.h"
#include "utils.h" #include "utils.h"
#include "panic.h"
static u8 boot2[0x80000] MEM2_BSS ALIGNED(64); static u8 boot2[0x80000] MEM2_BSS ALIGNED(64);
static u8 boot2_key[32] MEM2_BSS ALIGNED(32); static u8 boot2_key[32] MEM2_BSS ALIGNED(32);
@ -305,14 +306,12 @@ void boot2_init(void) {
} }
static u32 match[] = { static u32 match[] = {
0xF7FFFFB8,
0xBC024708, 0xBC024708,
1, 1,
2, 2,
}; };
static u32 patch[] = { static u32 patch[] = {
0xF7FFFFB8,
0xBC024708, 0xBC024708,
0x10001, 0x10001,
0x48415858, 0x48415858,
@ -320,11 +319,11 @@ static u32 patch[] = {
u32 boot2_run(u32 tid_hi, u32 tid_lo) { u32 boot2_run(u32 tid_hi, u32 tid_lo) {
u8 *ptr; u8 *ptr;
u32 i; u32 i, num_matches=0;
ioshdr *hdr; ioshdr *hdr;
patch[2] = tid_hi; patch[1] = tid_hi;
patch[3] = tid_lo; patch[2] = tid_lo;
gecko_printf("booting boot2 with title %08x-%08x\n", tid_hi, tid_lo); gecko_printf("booting boot2 with title %08x-%08x\n", tid_hi, tid_lo);
mem_protect(1, (void *)0x11000000, (void *)0x13FFFFFF); mem_protect(1, (void *)0x11000000, (void *)0x13FFFFFF);
@ -336,11 +335,17 @@ u32 boot2_run(u32 tid_hi, u32 tid_lo) {
ptr = (u8 *)0x11000000 + hdr->hdrsize + hdr->loadersize; ptr = (u8 *)0x11000000 + hdr->hdrsize + hdr->loadersize;
for (i = 0; i < sizeof(boot2); i += 1) { for (i = 0; i < sizeof(boot2); i += 1) {
if (memcmp(ptr+i, match, sizeof(match)) == 0) { if (memcmp(ptr+i, match, sizeof(match)) == 0) {
num_matches++;
memcpy(ptr+i, patch, sizeof(patch)); memcpy(ptr+i, patch, sizeof(patch));
gecko_printf("patched data @%08x\n", (u32)ptr+i); gecko_printf("patched data @%08x\n", (u32)ptr+i);
} }
} }
if (num_matches != 1) {
gecko_printf("Wrong number of patches (matched %d times, expected 1), panicking\n", num_matches);
panic2(0, PANIC_PATCHFAIL);
}
hdr->argument = 0x42; hdr->argument = 0x42;
u32 vector = 0x11000000 + hdr->hdrsize; u32 vector = 0x11000000 + hdr->hdrsize;

1
panic.h
View File

@ -14,6 +14,7 @@ Copyright (C) 2008, 2009 Hector Martin "marcan" <marcan@marcansoft.com>
#define PANIC_MOUNT 1,1,-1 #define PANIC_MOUNT 1,1,-1
#define PANIC_EXCEPTION 1,3,1,-1 #define PANIC_EXCEPTION 1,3,1,-1
#define PANIC_IPCOVF 1,3,3,-1 #define PANIC_IPCOVF 1,3,3,-1
#define PANIC_PATCHFAIL 1,3,3,3,-1
void panic2(int mode, ...) __attribute__ ((noreturn)); void panic2(int mode, ...) __attribute__ ((noreturn));