mirror of
https://gitlab.com/Nanolx/homebrewfilter.git
synced 2024-11-24 18:16:56 +01:00
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
|
/*--------------------------------------------------------------
|
||
|
|
Copyright (C) 2011 Tueidj
|
||
|
|
|
||
|
|
This software falls under the GPL license
|
||
|
|
|
||
|
|
This software is provided 'as-is', without any express or implied
|
||
|
|
warranty. In no event will the authors be held liable for any
|
||
|
|
damages arising from the use of this software.
|
||
|
|
|
||
|
|
Permission is granted to anyone to use this software for any
|
||
|
|
purpose, including commercial applications, and to alter it and
|
||
|
|
redistribute it freely, subject to the following restrictions:
|
||
|
|
|
||
|
|
1. The origin of this software must not be misrepresented; you
|
||
|
|
must not claim that you wrote the original software. If you use
|
||
|
|
this software in a product, an acknowledgment in the product
|
||
|
|
documentation would be appreciated but is not required.
|
||
|
|
|
||
|
|
2. Altered source versions must be plainly marked as such, and
|
||
|
|
must not be misrepresented as being the original software.
|
||
|
|
|
||
|
|
3. This notice may not be removed or altered from any source
|
||
|
|
distribution.
|
||
|
|
|
||
|
|
-------------------------------------------------------------*/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <gccore.h>
|
||
|
|
#include <ogc/machine/processor.h>
|
||
|
|
#include "gecko.h"
|
||
|
|
|
||
|
|
|
||
|
|
#define CHECK_AHB 0x0D800064
|
||
|
|
#define MEM2_PROT 0x0D8B420A
|
||
|
|
#define ES_MODULE_START (u16*)0x939F0000
|
||
|
|
|
||
|
|
static const u16 ticket_check[] = {
|
||
|
|
0x685B, // ldr r3,[r3,#4] ; get TMD pointer
|
||
|
|
0x22EC, 0x0052, // movls r2, 0x1D8
|
||
|
|
0x189B, // adds r3, r3, r2 ; add offset of access rights field in TMD
|
||
|
|
0x681B, // ldr r3, [r3] ; load access rights (haxxme!)
|
||
|
|
0x4698, // mov r8, r3 ; store it for the DVD video bitcheck later
|
||
|
|
0x07DB // lsls r3, r3, #31; check AHBPROT bit
|
||
|
|
};
|
||
|
|
|
||
|
|
s32 Patch_ahbprot(void)
|
||
|
|
{
|
||
|
|
// patch HID4 write in HBC stub - this should be done when the extra HID4 bits are turned on
|
||
|
|
*(u32*)0x80002174 = 0x60000000;
|
||
|
|
|
||
|
|
if (read32(CHECK_AHB) != -1)
|
||
|
|
{
|
||
|
|
gprintf("AHBPROT doesn't seem to be disabled.\n");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
u16 *patchme;
|
||
|
|
write16(MEM2_PROT, 2);
|
||
|
|
for (patchme=ES_MODULE_START; patchme < ES_MODULE_START+0x4000; patchme++)
|
||
|
|
{
|
||
|
|
if (!memcmp(patchme, ticket_check, sizeof(ticket_check)))
|
||
|
|
{
|
||
|
|
gprintf("Found TMD Access rights check at %p\n", patchme);
|
||
|
|
// write16/uncached poke doesn't work for this. Go figure.
|
||
|
|
patchme[4] = 0x23FF; // li r3, 0xFF
|
||
|
|
DCFlushRange(patchme+4, 2);
|
||
|
|
return true;
|
||
|
|
//break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
IOS_ReloadIOS(58); // MEM2 protection re-enabled here
|
||
|
|
dprintf("Loaded a new IOS.\n");
|
||
|
|
if (read32(CHECK_AHB) != -1)
|
||
|
|
dprintf("AHBPROT doesn't seem to be disabled.\n");
|
||
|
|
else
|
||
|
|
dprintf("AHBPROT is disabled (TADA!).\n");
|
||
|
|
*/
|