The-Homebrew-Cloud/Genesis-Plus-GX
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reverted IOS patch (became useless with HBC 1.1.0 release)

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ekeeke31 2012-02-28 21:10:56 +00:00
parent 2708e69f79
commit 3e8897d331
1 changed files with 1 additions and 57 deletions
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58
source/gx/main.c
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@ -3,7 +3,7 @@
*
* Genesis Plus GX
*
* Copyright Eke-Eke (2007-2011), based on original work from Softdev (2006)
* Copyright Eke-Eke (2007-2012), based on original work from Softdev (2006)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:
@ -49,10 +49,6 @@
#include <fat.h>
#ifdef HW_RVL
#include <ogc/machine/processor.h>
#endif
/* audio "exact" samplerate, measured on real hardware */
#ifdef HW_RVL
#define SAMPLERATE_48KHZ 48000
@ -72,46 +68,6 @@ u32 delta_samp[LOGSIZE];
#endif
#ifdef HW_RVL
/****************************************************************************
* Force AHBPROT flags when IOS is reloaded
* Credits to DaveBaol for the original patch
***************************************************************************/
int Patch_IOS(void)
{
/* full hardware access is initially required */
if (read32(0xd800064) == 0xffffffff)
{
/* disable MEM2 protection */
write16(0xd8b420a, 0);
/* IOS area (top of MEM2, above IOS Heap area) */
u8 *ptr_start = (u8*)*((u32*)0x80003134);
u8 *ptr_end = (u8*)0x94000000;
/* Make sure start pointer is valid */
if (((u32)ptr_start < 0x90000000) || (ptr_start >= ptr_end))
{
/* use libogc default value (longer but safer) */
ptr_start = (u8*) SYS_GetArena2Hi();
}
/* Search specific code pattern */
const u8 es_set_ahbprot_pattern[] = { 0x68, 0x5B, 0x22, 0xEC, 0x00, 0x52, 0x18, 0x9B, 0x68, 0x1B, 0x46, 0x98, 0x07, 0xDB };
while (ptr_start < (ptr_end - sizeof(es_set_ahbprot_pattern)))
{
if (!memcmp(ptr_start, es_set_ahbprot_pattern, sizeof(es_set_ahbprot_pattern)))
{
/* patch IOS (force AHBPROT bit to be set when launching titles) */
ptr_start[25] = 0x01;
DCFlushRange(ptr_start + 25, 1);
}
ptr_start++; /* could be optimized ? not sure if pattern coincides with instruction start */
}
}
return 0;
}
/****************************************************************************
* Power Button callback
***************************************************************************/
@ -477,18 +433,6 @@ void shutdown(void)
int main (int argc, char *argv[])
{
#ifdef HW_RVL
/* Temporary fix for HBC bug when using no_ios_reload with no connected network */
/* Try to patch current IOS to force AHBPROT flags being set on reload */
if (Patch_IOS())
{
/* reload IOS (full hardware access should now be preserved after reload) */
IOS_ReloadIOS(IOS_GetVersion());
/* enable DVD video commands */
write32(0xd800180, read32(0xd800180) & ~0x00200000);
usleep(200000);
}
/* enable 64-byte fetch mode for L2 cache */
L2Enhance();