Upstream/CloverBootloader
1
0
Fork 0
mirror of https://github.com/CloverHackyColor/CloverBootloader.git synced 2024-09-21 02:51:04 +02:00
Code Issues Packages Projects Releases Wiki Activity

Revert MKextV1 patcher

Browse Source
This commit is contained in:
Florin9doi 2019-12-28 12:30:36 +02:00
parent 86ac98e9b9
commit 9c2995d211
1 changed files with 0 additions and 152 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

152
rEFIt_UEFI/Platform/kext_inject.c
View File

@ -576,147 +576,6 @@ EFI_STATUS LoadKexts(IN LOADER_ENTRY *Entry)
}
/*
* Adler32 from Chameleon
*/
#define BASE 65521L /* largest prime smaller than 65536 */
#define NMAX 5000
// NMAX (was 5521) the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1
#define DO1(buf,i) {s1 += buf[i]; s2 += s1;}
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
#define DO16(buf) DO8(buf,0); DO8(buf,8);
static unsigned long Adler32(unsigned char *buf, long len)
{
unsigned long s1 = 1; // adler & 0xffff;
unsigned long s2 = 0; // (adler >> 16) & 0xffff;
unsigned long result;
int k;
while (len > 0) {
k = len < NMAX ? len : NMAX;
len -= k;
while (k >= 16) {
DO16(buf);
buf += 16;
k -= 16;
}
if (k != 0) do {
s1 += *buf++;
s2 += s1;
} while (--k);
s1 %= BASE;
s2 %= BASE;
}
result = (s2 << 16) | s1;
// result is in big endian
return result;
}
typedef struct {
UINT32 Magic;
UINT32 Signature;
UINT32 Length;
UINT32 Adler32;
UINT32 Version;
UINT32 NumKexts;
UINT32 CpuType;
UINT32 CpuSubtype;
} MKextHeader;
typedef struct {
UINT32 PlistOffset;
UINT32 PlistCompressedSize;
UINT32 PlistFullSize;
UINT32 PlistModifiedSeconds;
UINT32 BinaryOffset;
UINT32 BinaryCompressedSize;
UINT32 BinaryFullSize;
UINT32 BinaryModifiedSeconds;
} MKextFile;
#define MKEXT_MAGIC 0x54584b4d
#define MKEXT_SIGNATURE 0x58534f4d
#define MKEXT_VERSION_1 0x00800001
int is_mkext_v1(LOADER_ENTRY *Entry, UINT8* drvPtr) {
_DeviceTreeBuffer *dtb = (_DeviceTreeBuffer*) (((UINT8*)drvPtr) + sizeof(DeviceTreeNodeProperty));
MKextHeader* mkext_ptr = (MKextHeader*)(UINTN)(dtb->paddr);
if (mkext_ptr->Magic == MKEXT_MAGIC
&& mkext_ptr->Signature == MKEXT_SIGNATURE
&& mkext_ptr->Version == MKEXT_VERSION_1) {
DBG_RT(Entry, "MKext_v1 found at paddr=0x%08x, length=0x%08x\n", dtb->paddr, dtb->length);
return 1;
}
return 0;
}
void patch_mkext_v1(LOADER_ENTRY *Entry, UINT8 *drvPtr) {
_DeviceTreeBuffer *dtb = (_DeviceTreeBuffer*) (((UINT8*)drvPtr) + sizeof(DeviceTreeNodeProperty));
MKextHeader* mkext_ptr = (MKextHeader*)(UINTN)dtb->paddr;
UINT32 mkext_len = SwapBytes32(mkext_ptr->Length);
UINT32 mkext_numKexts = SwapBytes32(mkext_ptr->NumKexts);
LIST_ENTRY *Link;
KEXT_ENTRY *KextEntry;
if(!IsListEmpty(&gKextList)) {
for (Link = gKextList.ForwardLink; Link != &gKextList; Link = Link->ForwardLink) {
KextEntry = CR(Link, KEXT_ENTRY, Link, KEXT_SIGNATURE);
MKextFile *mkext_insert = (MKextFile*)((UINT8*)mkext_ptr + sizeof(MKextHeader) + mkext_numKexts * sizeof(MKextFile));
// free some space
CopyMem((UINT8*)mkext_insert + sizeof(MKextFile),
(UINT8*)mkext_insert,
mkext_len - (sizeof(MKextHeader) + mkext_numKexts * sizeof(MKextFile)));
mkext_len += sizeof(MKextFile);
// update the offsets to reflect 0x20 bytes moved above
for (UINT32 i = 0; i < mkext_numKexts; i++) {
MKextFile *kext_base = (MKextFile*)((UINT8*)mkext_ptr + sizeof(MKextHeader) + i * sizeof(MKextFile));
UINT32 plist_offset = SwapBytes32(kext_base->PlistOffset) + sizeof(MKextFile);
UINT32 binary_offset = SwapBytes32(kext_base->BinaryOffset) + sizeof(MKextFile);
kext_base->PlistOffset = SwapBytes32(plist_offset);
kext_base->BinaryOffset = SwapBytes32(binary_offset);
}
// copy kext data (plist+binary)
CopyMem((UINT8*)mkext_ptr + mkext_len,
(UINT8*)(KextEntry->kext.paddr + sizeof(_BooterKextFileInfo)),
(UINT32)((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->infoDictLength
+ (UINT32)((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->executableLength);
// insert kext offsets
mkext_insert->PlistOffset = SwapBytes32(mkext_len);
mkext_len += ((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->infoDictLength;
mkext_insert->PlistCompressedSize = 0;
mkext_insert->PlistFullSize = SwapBytes32((UINT32)((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->infoDictLength);
mkext_insert->PlistModifiedSeconds = 0;
mkext_insert->BinaryOffset = SwapBytes32(mkext_len);
mkext_len += ((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->executableLength;
mkext_insert->BinaryCompressedSize = 0;
mkext_insert->BinaryFullSize = SwapBytes32((UINT32)((_BooterKextFileInfo*)(UINTN)(KextEntry->kext.paddr))->executableLength);
mkext_insert->BinaryModifiedSeconds = 0;
mkext_numKexts ++;
// update the header
mkext_ptr->Length = SwapBytes32(mkext_len);
mkext_ptr->NumKexts = SwapBytes32(mkext_numKexts);
// update the checksum
mkext_ptr->Adler32 = SwapBytes32(Adler32((UINT8*)mkext_ptr + 0x10, mkext_len - 0x10));
// update the memory-map reference
dtb->length = mkext_len;
}
}
}
////////////////////
// OnExitBootServices
////////////////////
@ -802,17 +661,6 @@ EFI_STATUS InjectKexts(/*IN EFI_MEMORY_DESCRIPTOR *Desc*/ IN UINT32 deviceTreeP,
return EFI_INVALID_PARAMETER;
}
UINT64 os_version = AsciiOSVersionToUint64(Entry->OSVersion);
if (os_version < AsciiOSVersionToUint64("10.6")) {
DBG_RT(Entry, "no kernel patch for Tiger/Leopard; try to patch mkext\n");
if (is_mkext_v1(Entry, drvPtr)) {
patch_mkext_v1(Entry, drvPtr);
return EFI_SUCCESS;
}
}
// make space for memory map entries
platformEntry->NumProperties -= 2;
offset = sizeof(DeviceTreeNodeProperty) + ((DeviceTreeNodeProperty*) infoPtr)->Length;