LowLevel/Luma3DS-3GX
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Fix external firm booting with old firms, minor style changes

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This commit is contained in:
Aurora Wright 2019-04-06 21:27:17 +07:00
parent 70757e564d
commit 4f699ccb81
4 changed files with 30 additions and 29 deletions
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4
arm9/source/firm.c
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@ -399,8 +399,8 @@ u32 patchNativeFirm(u32 firmVersion, FirmwareSource nandType, bool loadFromStora
//Apply anti-anti-DG patches on 11.0+
if(firmVersion >= (ISN3DS ? 0x21 : 0x52)) ret += patchTitleInstallMinVersionChecks(process9Offset, process9Size, firmVersion);
//patch P9 AM ticket wrapper on 11.8+ to use 0 Key and IV, only on UNITINFO patch to prevent NIM from actually send any
if(doUnitinfoPatch && firmVersion >= (ISN3DS ? 0x35 : 0x64)) ret += patchP9AMTicketWrapperZeroKeyIV(process9Offset, process9Size);
//Patch P9 AM ticket wrapper on 11.8+ to use 0 Key and IV, only with UNITINFO patch on to prevent NIM from actually sending any
if(doUnitinfoPatch && firmVersion >= (ISN3DS ? 0x35 : 0x64)) ret += patchP9AMTicketWrapperZeroKeyIV(process9Offset, process9Size, firmVersion);
//Apply UNITINFO patches
if(doUnitinfoPatch)

44
arm9/source/patches.c
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@ -549,6 +549,28 @@ u32 patchUnitInfoValueSet(u8 *pos, u32 size)
return 0;
}
u32 patchP9AMTicketWrapperZeroKeyIV(u8 *pos, u32 size, u32 firmVersion)
{
static const u8 __rt_memclr_pattern[] = {0x00, 0x20, 0xA0, 0xE3, 0x04, 0x00, 0x51, 0xE3, 0x07, 0x00, 0x00, 0x3A};
static const u8 pattern[] = {0x20, 0x21, 0xA6, 0xA8};
u32 function = (u32)memsearch(pos, __rt_memclr_pattern, size, sizeof(__rt_memclr_pattern));
u32 *off = (u32 *)memsearch(pos, pattern, size, sizeof(pattern));
if(function == 0 || off == NULL) return firmVersion == 0xFFFFFFFF ? 0 : 1;
s32 opjumpdistance = (s32)(function - ((u32)&off[2])) / 2;
//Beyond limit
if(opjumpdistance < -0x1fffff || opjumpdistance > 0x1fffff) return 1;
//r0 and r1 for old call are already correct for this one
//BLX __rt_memclr
off[1] = 0xE800F000U | (((u32)opjumpdistance & 0x7FF) << 16) | (((u32)opjumpdistance >> 11) & 0x3FF) | (((u32)opjumpdistance >> 21) & 0x400);
return 0;
}
u32 patchLgySignatureChecks(u8 *pos, u32 size)
{
static const u8 pattern[] = {0x47, 0xC1, 0x17, 0x49};
@ -667,25 +689,3 @@ u32 patchAgbBootSplash(u8 *pos, u32 size)
return 0;
}
u32 patchP9AMTicketWrapperZeroKeyIV(u8* pos, u32 size)
{
static const u8 __rt_memclr_pattern[] = {0x00, 0x20, 0xA0, 0xE3, 0x04, 0x00, 0x51, 0xE3, 0x07, 0x00, 0x00, 0x3A};
static const u8 pattern[] = {0x20, 0x21, 0xA6, 0xA8};
u32 function = (u32)memsearch(pos, __rt_memclr_pattern, size, sizeof(__rt_memclr_pattern));
u32 *off = (u32*)memsearch(pos, pattern, size, sizeof(pattern));
if(function == 0 || off == NULL) return 1;
s32 opjumpdistance = (s32)(function - ((u32)&off[2])) / 2;
//beyond limit
if(opjumpdistance < -0x1fffff || opjumpdistance > 0x1fffff) return 1;
//r0 and r1 for old call are already correctly for this one
//BLX __rt_memclr
off[1] = 0xE800F000U | (((u32)opjumpdistance & 0x7FF) << 16) | (((u32)opjumpdistance >> 11) & 0x3FF) | (((u32)opjumpdistance >> 21) & 0x400);
return 0;
}

2
arm9/source/patches.h
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@ -56,6 +56,7 @@ u32 patchSvcBreak9(u8 *pos, u32 size, u32 kernel9Address);
u32 patchKernel9Panic(u8 *pos, u32 size);
u32 patchP9AccessChecks(u8 *pos, u32 size);
u32 patchUnitInfoValueSet(u8 *pos, u32 size);
u32 patchP9AMTicketWrapperZeroKeyIV(u8 *pos, u32 size, u32 firmVersion);
u32 patchLgySignatureChecks(u8 *pos, u32 size);
u32 patchTwlInvalidSignatureChecks(u8 *pos, u32 size);
u32 patchTwlNintendoLogoChecks(u8 *pos, u32 size);
@ -64,4 +65,3 @@ u32 patchTwlFlashcartChecks(u8 *pos, u32 size, u32 firmVersion);
u32 patchOldTwlFlashcartChecks(u8 *pos, u32 size);
u32 patchTwlShaHashChecks(u8 *pos, u32 size);
u32 patchAgbBootSplash(u8 *pos, u32 size);
u32 patchP9AMTicketWrapperZeroKeyIV(u8* pos, u32 size);

7
arm9/source/utils.c
View File

@ -86,15 +86,16 @@ u32 waitInput(bool isMenu)
if(!key)
{
if (shouldShellShutdown) {
if(shouldShellShutdown)
{
u8 shellState = I2C_readReg(I2C_DEV_MCU, 0xF);
wait(3);
if(!(shellState & 2)) mcuPowerOff();
}
u8 intstatus = I2C_readReg(I2C_DEV_MCU, 0x10);
u8 intStatus = I2C_readReg(I2C_DEV_MCU, 0x10);
wait(3);
if (intstatus & 1) mcuPowerOff(); //Power button pressed
if(intStatus & 1) mcuPowerOff(); //Power button pressed
oldKey = 0;
dPadDelay = 0;