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CommonPatches.c
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CommonPatches.c
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/** @file
Commonly used kext and kernel patches.
Copyright (c) 2018, vit9696. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Base.h>
#include <IndustryStandard/AppleIntelCpuInfo.h>
#include <Library/BaseMemoryLib.h>
#include <Library/OcDebugLogLib.h>
#include <Library/OcAppleKernelLib.h>
#include <Library/PrintLib.h>
#include <Library/OcFileLib.h>
#include <Library/OcStringLib.h>
#include <Library/UefiLib.h>
STATIC
CONST UINT8
mMovEcxE2[] = {
0xB9, 0xE2, 0x00, 0x00, 0x00 ///< mov ecx, 0xE2
};
STATIC_ASSERT (sizeof (mMovEcxE2) == 5, "Unsupported mMovEcxE2");
STATIC
CONST UINT8
mMovCxE2[] = {
0x66, 0xB9, 0xE2, 0x00 ///< mov cx, 0xE2
};
STATIC_ASSERT (sizeof (mMovCxE2) == 4, "Unsupported mMovCxE2");
STATIC
CONST UINT8
mWrmsr[] = {
0x0F, 0x30 ///< wrmsr
};
STATIC_ASSERT (sizeof (mWrmsr) == 2, "Unsupported mWrmsr");
STATIC
CONST UINTN
mWrmsrMaxDistance = 32;
STATIC
EFI_STATUS
PatchAppleCpuPmCfgLock (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
UINTN Count;
UINT8 *Walker;
UINT8 *WalkerEnd;
UINT8 *WalkerTmp;
//
// NOTE: As of macOS 13.0 AICPUPM kext is removed.
// However, we may remove this check later, if an older version can be injected correctly
// such that it will patched.
//
if (OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_VENTURA_MIN, 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping AppleCpuPmCfgLock patch on %u\n", KernelVersion));
return EFI_SUCCESS;
}
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
Count = 0;
Walker = (UINT8 *)MachoGetMachHeader (&Patcher->MachContext);
WalkerEnd = Walker + MachoGetInnerSize (&Patcher->MachContext) - mWrmsrMaxDistance;
//
// Thanks to Clover developers for the approach.
//
while (Walker < WalkerEnd) {
//
// Match (e)cx E2h assignment.
//
if ( (Walker[0] == mMovEcxE2[0])
&& (Walker[1] == mMovEcxE2[1])
&& (Walker[2] == mMovEcxE2[2])
&& (Walker[3] == mMovEcxE2[3])
&& (Walker[4] == mMovEcxE2[4]))
{
Walker += sizeof (mMovEcxE2);
} else if ( (Walker[0] == mMovCxE2[0])
&& (Walker[1] == mMovCxE2[1])
&& (Walker[2] == mMovCxE2[2])
&& (Walker[3] == mMovCxE2[3]))
{
Walker += sizeof (mMovCxE2);
} else {
++Walker;
continue;
}
WalkerTmp = Walker + mWrmsrMaxDistance;
while (Walker < WalkerTmp) {
if ( (Walker[0] == mWrmsr[0])
&& (Walker[1] == mWrmsr[1]))
{
++Count;
//
// Patch matched wrmsr with nop.
//
*Walker++ = 0x90;
*Walker++ = 0x90;
break;
}
if ( ((Walker[0] == 0xC9) && (Walker[1] == 0xC3)) ///< leave; ret
|| ((Walker[0] == 0x5D) && (Walker[1] == 0xC3))) ///< pop rbp; ret
//
// Stop searching upon matching return sequences.
//
{
Walker += 2;
break;
}
if ( ((Walker[0] == 0xB9) && (Walker[3] == 0) && (Walker[4] == 0)) ///< mov ecx, 00000xxxxh
|| ((Walker[0] == 0x66) && (Walker[1] == 0xB9) && (Walker[3] == 0))) ///< mov cx, 00xxh
//
// Stop searching upon matching reassign sequences.
//
{
break;
}
//
// Continue searching.
//
++Walker;
}
}
//
// At least one patch must be successful for this to work.
//
return Count > 0 ? EFI_SUCCESS : EFI_NOT_FOUND;
}
#pragma pack(push, 1)
//
// XCPM record definition, extracted from XNU debug kernel.
//
typedef struct XCPM_MSR_RECORD_ {
UINT32 xcpm_msr_num;
UINT32 xcpm_msr_applicable_cpus;
UINT32 *xcpm_msr_flag_p;
UINT64 xcpm_msr_bits_clear;
UINT64 xcpm_msr_bits_set;
UINT64 xcpm_msr_initial_value;
UINT64 xcpm_msr_rb_value;
} XCPM_MSR_RECORD;
#pragma pack(pop)
STATIC
CONST UINT8
mXcpmCfgLockRelFind[] = {
0xB9, 0xE2, 0x00, 0x00, 0x00, ///< mov ecx, 0xE2
0x0F, 0x30 ///< wrmsr
};
STATIC
CONST UINT8
mXcpmCfgLockRelReplace[] = {
0xB9, 0xE2, 0x00, 0x00, 0x00, ///< mov ecx, 0xE2
0x90, 0x90 ///< nop
};
STATIC
PATCHER_GENERIC_PATCH
mXcpmCfgLockRelPatch = {
.Comment = DEBUG_POINTER ("XcpmCfgLockRel"),
.Base = "_xcpm_idle",
.Find = mXcpmCfgLockRelFind,
.Mask = NULL,
.Replace = mXcpmCfgLockRelReplace,
.ReplaceMask = NULL,
.Size = sizeof (mXcpmCfgLockRelFind),
.Count = 2,
.Skip = 0,
.Limit = 4096
};
STATIC
CONST UINT8
mXcpmCfgLockDbgFind[] = {
0xBF, 0xE2, 0x00, 0x00, 0x00, ///< mov edi, 0xE2
0xE8 ///< call (wrmsr64)
};
STATIC
CONST UINT8
mXcpmCfgLockDbgReplace[] = {
0xEB, 0x08, ///< jmp LBL ; Skip the 3x nops and 5x call
0x90, 0x90, 0x90, ///< nop
0xE8 ///< call (wrmsr64) ; Skipped by jmp LBL
};
STATIC
PATCHER_GENERIC_PATCH
mXcpmCfgLockDbgPatch = {
.Comment = DEBUG_POINTER ("XcpmCfgLockDbg"),
.Base = "_xcpm_cst_control_evaluate",
.Find = mXcpmCfgLockDbgFind,
.Mask = NULL,
.Replace = mXcpmCfgLockDbgReplace,
.ReplaceMask = NULL,
.Size = sizeof (mXcpmCfgLockDbgFind),
.Count = 2,
.Skip = 0,
.Limit = 4096
};
STATIC
EFI_STATUS
PatchAppleXcpmCfgLock (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
XCPM_MSR_RECORD *Record;
XCPM_MSR_RECORD *Last;
UINT32 Replacements;
//
// This is a kernel patch, so Patcher cannot be NULL.
//
ASSERT (Patcher != NULL);
//
// XCPM is not available before macOS 10.8.5.
//
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION (KERNEL_VERSION_MOUNTAIN_LION, 5, 0), 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping XcpmCfgLock on %u\n", KernelVersion));
return EFI_SUCCESS;
}
Last = (XCPM_MSR_RECORD *)((UINT8 *)MachoGetMachHeader (&Patcher->MachContext)
+ MachoGetInnerSize (&Patcher->MachContext) - sizeof (XCPM_MSR_RECORD));
Replacements = 0;
Status = PatcherGetSymbolAddress (Patcher, "_xcpm_core_scope_msrs", (UINT8 **)&Record);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to locate _xcpm_core_scope_msrs - %r\n", Status));
return EFI_NOT_FOUND;
}
while (Record < Last) {
if (Record->xcpm_msr_num != 0xE2) {
break;
}
DEBUG ((
DEBUG_INFO,
"OCAK: Zeroing _xcpm_core_scope_msrs 0x%X applicable CPUs (%u)\n",
Record->xcpm_msr_num,
Record->xcpm_msr_applicable_cpus
));
Record->xcpm_msr_applicable_cpus = 0;
++Replacements;
++Record;
}
//
// Now the HWP patch at _xcpm_idle() for Release XNU.
//
Status = PatcherApplyGenericPatch (Patcher, &mXcpmCfgLockRelPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply _xcpm_idle release patch - %r, trying dbg\n", Status));
Status = PatcherApplyGenericPatch (Patcher, &mXcpmCfgLockDbgPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to apply dbg _xcpm_cst_control_evaluate patches - %r\n", Status));
}
}
return (Replacements > 0 && !EFI_ERROR (Status)) ? EFI_SUCCESS : EFI_NOT_FOUND;
}
STATIC
CONST UINT8
mMiscPwrMgmtRelFind[] = {
0xB9, 0xAA, 0x01, 0x00, 0x00, ///< mov ecx, 0x1AA
0x0F, 0x30 ///< wrmsr
};
STATIC
CONST UINT8
mMiscPwrMgmtRelReplace[] = {
0xB9, 0xAA, 0x01, 0x00, 0x00, ///< mov ecx, 0x1AA
0x90, 0x90 ///< nop
};
STATIC
PATCHER_GENERIC_PATCH
mMiscPwrMgmtRelPatch = {
.Comment = DEBUG_POINTER ("MiscPwrMgmtRel"),
.Base = NULL,
.Find = mMiscPwrMgmtRelFind,
.Mask = NULL,
.Replace = mMiscPwrMgmtRelReplace,
.ReplaceMask = NULL,
.Size = sizeof (mMiscPwrMgmtRelFind),
.Count = 0,
.Skip = 0,
.Limit = 0
};
STATIC
CONST UINT8
mMiscPwrMgmtDbgFind[] = {
0xBF, 0xAA, 0x01, 0x00, 0x00, ///< mov edi, 0x1AA
0xE8 ///< call (wrmsr64)
};
STATIC
CONST UINT8
mMiscPwrMgmtDbgReplace[] = {
0xEB, 0x08, ///< jmp LBL ; Skip the 3x nops and 5x call
0x90, 0x90, 0x90, ///< nop
0xE8 ///< call (wrmsr64) ; Skipped by jmp LBL
};
STATIC
PATCHER_GENERIC_PATCH
mMiscPwrMgmtDbgPatch = {
.Comment = DEBUG_POINTER ("MiscPwrMgmtDbg"),
.Base = NULL,
.Find = mMiscPwrMgmtDbgFind,
.Mask = NULL,
.Replace = mMiscPwrMgmtDbgReplace,
.ReplaceMask = NULL,
.Size = sizeof (mMiscPwrMgmtDbgFind),
.Count = 0,
.Skip = 0,
.Limit = 0
};
STATIC
EFI_STATUS
PatchAppleXcpmExtraMsrs (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
XCPM_MSR_RECORD *Record;
XCPM_MSR_RECORD *Last;
UINT32 Replacements;
//
// This is a kernel patch, so Patcher cannot be NULL.
//
ASSERT (Patcher != NULL);
//
// XCPM is not available before macOS 10.8.5.
//
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION (KERNEL_VERSION_MOUNTAIN_LION, 5, 0), 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping XcpmExtraMsrs on %u\n", KernelVersion));
return EFI_SUCCESS;
}
Last = (XCPM_MSR_RECORD *)((UINT8 *)MachoGetMachHeader (&Patcher->MachContext)
+ MachoGetInnerSize (&Patcher->MachContext) - sizeof (XCPM_MSR_RECORD));
Replacements = 0;
Status = PatcherGetSymbolAddress (Patcher, "_xcpm_pkg_scope_msrs", (UINT8 **)&Record);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to locate _xcpm_pkg_scope_msrs - %r\n", Status));
return EFI_NOT_FOUND;
}
while (Record < Last) {
//
// Most Record->xcpm_msr_applicable_cpus has
// 0xDC or 0xDE in its lower 16-bit and thus here we
// AND 0xFF0000FDU in order to match both. (The result will be 0xDC)
//
if ((Record->xcpm_msr_applicable_cpus & 0xFF0000FDU) != 0xDC) {
break;
}
DEBUG ((
DEBUG_INFO,
"OCAK: Zeroing _xcpm_pkg_scope_msrs 0x%X applicable CPUs (%u)\n",
Record->xcpm_msr_num,
Record->xcpm_msr_applicable_cpus
));
Record->xcpm_msr_applicable_cpus = 0;
++Replacements;
++Record;
}
Status = PatcherGetSymbolAddress (Patcher, "_xcpm_SMT_scope_msrs", (UINT8 **)&Record);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to locate _xcpm_SMT_scope_msrs - %r\n", Status));
return EFI_NOT_FOUND;
}
while (Record < Last) {
if (Record->xcpm_msr_flag_p != NULL) {
break;
}
DEBUG ((
DEBUG_INFO,
"OCAK: Zeroing _xcpm_SMT_scope_msrs data 0x%X applicable CPUs (%u)\n",
Record->xcpm_msr_num,
Record->xcpm_msr_applicable_cpus
));
Record->xcpm_msr_applicable_cpus = 0;
++Replacements;
++Record;
}
//
// Now patch writes to MSR_MISC_PWR_MGMT.
//
Status = PatcherApplyGenericPatch (Patcher, &mMiscPwrMgmtRelPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to patch writes to MSR_MISC_PWR_MGMT - %r, trying dbg\n", Status));
Status = PatcherApplyGenericPatch (Patcher, &mMiscPwrMgmtDbgPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to patch writes to MSR_MISC_PWR_MGMT - %r\n", Status));
}
}
return (Replacements > 0 && !EFI_ERROR (Status)) ? EFI_SUCCESS : EFI_NOT_FOUND;
}
STATIC
CONST UINT8
mPerfCtrlFind1[] = {
0xB9, 0x99, 0x01, 0x00, 0x00, ///< mov ecx, 0x199
0x0F, 0x30 ///< wrmsr
};
STATIC
CONST UINT8
mPerfCtrlFind2[] = {
0xB9, 0x99, 0x01, 0x00, 0x00, ///< mov ecx, 0x199
0x31, 0xD2, ///< xor edx, edx
0x0F, 0x30 ///< wrmsr
};
STATIC
CONST UINT8
mPerfCtrlFind3[] = {
0xB9, 0x99, 0x01, 0x00, 0x00, ///< mov ecx, 0x199
0x4C, 0x89, 0xF0, ///< mov rax, r14
0x0F, 0x30 ///< wrmsr
};
STATIC
CONST UINT8
mPerfCtrlMax[] = {
0xB9, 0x99, 0x01, 0x00, 0x00, ///< mov ecx, 0x199
0x31, 0xD2, ///< xor edx, edx
0xB8, 0x00, 0xFF, 0x00, 0x00, ///< mov eax, 0xFF00
0x0F, 0x30, ///< wrmsr
0xC3 ///< ret
};
STATIC
EFI_STATUS
PatchAppleXcpmForceBoost (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
UINT8 *Start;
UINT8 *Last;
UINT8 *Current;
//
// This is a kernel patch, so Patcher cannot be NULL.
//
ASSERT (Patcher != NULL);
//
// XCPM is not available before macOS 10.8.5.
//
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION (KERNEL_VERSION_MOUNTAIN_LION, 5, 0), 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping XcpmForceBoost on %u\n", KernelVersion));
return EFI_SUCCESS;
}
Start = (UINT8 *)MachoGetMachHeader (&Patcher->MachContext);
Last = Start + MachoGetInnerSize (&Patcher->MachContext) - EFI_PAGE_SIZE * 2;
Start += EFI_PAGE_SIZE;
Current = Start;
while (Current < Last) {
//
// Compare <mov ecx, 0x199> in common.
//
if ( (Current[0] == mPerfCtrlFind1[0])
&& (Current[1] == mPerfCtrlFind1[1])
&& (Current[2] == mPerfCtrlFind1[2])
&& (Current[3] == mPerfCtrlFind1[3]))
{
if ( (CompareMem (&Current[4], &mPerfCtrlFind1[4], sizeof (mPerfCtrlFind1) - 4) == 0)
|| (CompareMem (&Current[4], &mPerfCtrlFind2[4], sizeof (mPerfCtrlFind2) - 4) == 0)
|| (CompareMem (&Current[4], &mPerfCtrlFind3[4], sizeof (mPerfCtrlFind3) - 4) == 0))
{
break;
}
}
++Current;
}
if (Current == Last) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to locate MSR_IA32_PERF_CONTROL write\n"));
return EFI_NOT_FOUND;
}
Start = Current - EFI_PAGE_SIZE;
Current -= 4;
while (Current >= Start) {
//
// Locate the beginning.
//
if ( (Current[0] == 0x55)
&& (Current[1] == 0x48)
&& (Current[2] == 0x89)
&& (Current[3] == 0xE5))
{
break;
}
--Current;
}
if (Current < Start) {
DEBUG ((DEBUG_WARN, "OCAK: Failed to locate MSR_IA32_PERF_CONTROL prologue\n"));
return EFI_NOT_FOUND;
}
DEBUG ((DEBUG_INFO, "OCAK: Patch write max to MSR_IA32_PERF_CONTROL\n"));
CopyMem (Current, mPerfCtrlMax, sizeof (mPerfCtrlMax));
return EFI_SUCCESS;
}
STATIC
CONST UINT8
mRemoveUsbLimitV1Find[] = {
0xFF, 0xFF, 0x10
};
STATIC
CONST UINT8
mRemoveUsbLimitV1Replace[] = {
0xFF, 0xFF, 0x40
};
STATIC
PATCHER_GENERIC_PATCH
mRemoveUsbLimitV1Patch = {
.Comment = DEBUG_POINTER ("RemoveUsbLimitV1"),
.Base = "__ZN15AppleUSBXHCIPCI11createPortsEv",
.Find = mRemoveUsbLimitV1Find,
.Mask = NULL,
.Replace = mRemoveUsbLimitV1Replace,
.ReplaceMask = NULL,
.Size = sizeof (mRemoveUsbLimitV1Replace),
.Count = 1,
.Skip = 0,
.Limit = 8192
};
STATIC
CONST UINT8
mRemoveUsbLimitV2Find[] = {
0x0F, 0x0F, 0x83
};
STATIC
CONST UINT8
mRemoveUsbLimitV2Replace[] = {
0x40, 0x0F, 0x83
};
STATIC
PATCHER_GENERIC_PATCH
mRemoveUsbLimitV2Patch = {
.Comment = DEBUG_POINTER ("RemoveUsbLimitV2"),
.Base = "__ZN12AppleUSBXHCI11createPortsEv",
.Find = mRemoveUsbLimitV2Find,
.Mask = NULL,
.Replace = mRemoveUsbLimitV2Replace,
.ReplaceMask = NULL,
.Size = sizeof (mRemoveUsbLimitV2Replace),
.Count = 1,
.Skip = 0,
.Limit = 4096
};
STATIC
CONST UINT8
mRemoveUsbLimitIoP1Find[] = {
0x0F, 0x0F, 0x87
};
STATIC
CONST UINT8
mRemoveUsbLimitIoP1Replace[] = {
0x40, 0x0F, 0x87
};
STATIC
PATCHER_GENERIC_PATCH
mRemoveUsbLimitIoP1Patch = {
.Comment = DEBUG_POINTER ("RemoveUsbLimitIoP1"),
.Base = "__ZN16AppleUSBHostPort15setPortLocationEj",
.Find = mRemoveUsbLimitIoP1Find,
.Mask = NULL,
.Replace = mRemoveUsbLimitIoP1Replace,
.ReplaceMask = NULL,
.Size = sizeof (mRemoveUsbLimitIoP1Replace),
.Count = 1,
.Skip = 0,
.Limit = 4096
};
STATIC
EFI_STATUS
PatchUsbXhciPortLimit1 (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
//
// On 10.14.4 and newer IOUSBHostFamily also needs limit removal.
// Thanks to ydeng discovering this.
//
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION (KERNEL_VERSION_MOJAVE, 5, 0), 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping port patch IOUSBHostFamily on %u\n", KernelVersion));
return EFI_SUCCESS;
}
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
Status = PatcherApplyGenericPatch (Patcher, &mRemoveUsbLimitIoP1Patch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply port patch com.apple.iokit.IOUSBHostFamily - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success port com.apple.iokit.IOUSBHostFamily\n"));
}
return Status;
}
STATIC
EFI_STATUS
PatchUsbXhciPortLimit2 (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_HIGH_SIERRA_MIN, 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping modern port patch AppleUSBXHCI on %u\n", KernelVersion));
return EFI_SUCCESS;
}
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
//
// TODO: Implement some locationID hack in IOUSBHostFamily.
// The location ID is a 32 bit number which is unique among all USB devices in the system,
// and which will not change on a system reboot unless the topology of the bus itself changes.
// See AppleUSBHostPort::setPortLocation():
// locationId = getLocationId();
// if (!(locationId & 0xF)) {
// int32_t shift = 20;
// while (locationId & (0xF << shift)) {
// shift -= 4;
// if (Shift < 0) { setLocationId(locationId); return; }
// }
// setLocationId(locationId | ((portNumber & 0xF) << shift));
// }
// The value (e.g. 0x14320000) is represented as follows: 0xAABCDEFG
// AA — Ctrl number 8 bits (e.g. 0x14, aka XHCI)
// B - Port number 4 bits (e.g. 0x3, aka SS03)
// C~F - Bus number 4 bits (e.g. 0x2, aka IOUSBHostHIDDevice)
//
// C~F are filled as many times as many USB Hubs are there on the port.
//
Status = PatcherApplyGenericPatch (Patcher, &mRemoveUsbLimitV2Patch);
if (!EFI_ERROR (Status)) {
//
// We do not need to patch com.apple.driver.usb.AppleUSBXHCI if this patch was successful.
// Only legacy systems require com.apple.driver.usb.AppleUSBXHCI to be patched.
//
DEBUG ((DEBUG_INFO, "OCAK: Patch success com.apple.driver.usb.AppleUSBXHCI\n"));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply patch com.apple.driver.usb.AppleUSBXHCI - %r\n", Status));
}
//
// TODO: Check when the patch changed actually.
//
if ( EFI_ERROR (Status)
&& OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_HIGH_SIERRA_MIN, KERNEL_VERSION_HIGH_SIERRA_MAX))
{
DEBUG ((DEBUG_INFO, "OCAK: Assuming success for AppleUSBXHCI on %u\n", KernelVersion));
return EFI_SUCCESS;
}
return Status;
}
STATIC
EFI_STATUS
PatchUsbXhciPortLimit3 (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_EL_CAPITAN_MIN, KERNEL_VERSION_HIGH_SIERRA_MAX)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping legacy port patch AppleUSBXHCIPCI on %u\n", KernelVersion));
return EFI_SUCCESS;
}
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
//
// If we are here, we are on legacy 10.13 or below, try the oldest patch.
//
Status = PatcherApplyGenericPatch (Patcher, &mRemoveUsbLimitV1Patch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply legacy port patch AppleUSBXHCIPCI - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success apply legacy port AppleUSBXHCIPCI\n"));
}
//
// TODO: Check when the patch changed actually.
//
if ( EFI_ERROR (Status)
&& OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_HIGH_SIERRA_MIN, KERNEL_VERSION_HIGH_SIERRA_MAX))
{
DEBUG ((DEBUG_INFO, "OCAK: Assuming success for legacy port AppleUSBXHCIPCI on %u\n", KernelVersion));
return EFI_SUCCESS;
}
return Status;
}
STATIC
CONST UINT8
mIOAHCIBlockStoragePatchV1Find[] = {
0x41, 0x50, 0x50, 0x4C, 0x45, 0x20, 0x53, 0x53, 0x44, 0x00 ///< "APPLE SSD\0"
};
STATIC
CONST UINT8
mIOAHCIBlockStoragePatchV1Replace[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
STATIC
PATCHER_GENERIC_PATCH
mIOAHCIBlockStoragePatchV1 = {
.Comment = DEBUG_POINTER ("IOAHCIBlockStorageV1"),
.Base = NULL,
.Find = mIOAHCIBlockStoragePatchV1Find,
.Mask = NULL,
.Replace = mIOAHCIBlockStoragePatchV1Replace,
.ReplaceMask = NULL,
.Size = sizeof (mIOAHCIBlockStoragePatchV1Find),
.Count = 1,
.Skip = 0
};
STATIC
CONST UINT8
mIOAHCIBlockStoragePatchV2Find[] = {
0x41, 0x50, 0x50, 0x4C, 0x45, 0x00 ///< "APPLE\0"
};
STATIC
CONST UINT8
mIOAHCIBlockStoragePatchV2Replace[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
STATIC
PATCHER_GENERIC_PATCH
mIOAHCIBlockStoragePatchV2 = {
.Comment = DEBUG_POINTER ("IOAHCIBlockStorageV2"),
.Base = NULL,
.Find = mIOAHCIBlockStoragePatchV2Find,
.Mask = NULL,
.Replace = mIOAHCIBlockStoragePatchV2Replace,
.ReplaceMask = NULL,
.Size = sizeof (mIOAHCIBlockStoragePatchV2Find),
.Count = 1,
.Skip = 0
};
STATIC
EFI_STATUS
PatchThirdPartyDriveSupport (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
Status = PatcherApplyGenericPatch (Patcher, &mIOAHCIBlockStoragePatchV1);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply patch com.apple.iokit.IOAHCIBlockStorage V1 - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success com.apple.iokit.IOAHCIBlockStorage V1\n"));
}
if (OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_CATALINA_MIN, 0)) {
Status = PatcherApplyGenericPatch (Patcher, &mIOAHCIBlockStoragePatchV2);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply patch com.apple.iokit.IOAHCIBlockStorage V2 - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success com.apple.iokit.IOAHCIBlockStorage V2\n"));
}
} else {
DEBUG ((DEBUG_INFO, "OCAK: Skipping IOAHCIBlockStorage V2 on %u\n", KernelVersion));
}
//
// This started to be required on 10.6.7 or so.
// We cannot trust which minor SnowLeo version is this, just let it pass.
//
if ( EFI_ERROR (Status)
&& OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_SNOW_LEOPARD_MIN, KERNEL_VERSION_SNOW_LEOPARD_MAX))
{
DEBUG ((DEBUG_INFO, "OCAK: Assuming success for IOAHCIBlockStorage on %u\n", KernelVersion));
return EFI_SUCCESS;
}
return Status;
}
STATIC
CONST UINT8
mIOAHCIPortPatchFind[] = {
0x45, 0x78, 0x74, 0x65, 0x72, 0x6E, 0x61, 0x6C ///< "External"
};
STATIC
CONST UINT8
mIOAHCIPortPatchReplace[] = {
0x49, 0x6E, 0x74, 0x65, 0x72, 0x6E, 0x61, 0x6C ///< "Internal"
};
STATIC
PATCHER_GENERIC_PATCH
mIOAHCIPortPatch = {
.Comment = DEBUG_POINTER ("IOAHCIPort"),
.Base = NULL,
.Find = mIOAHCIPortPatchFind,
.Mask = NULL,
.Replace = mIOAHCIPortPatchReplace,
.ReplaceMask = NULL,
.Size = sizeof (mIOAHCIPortPatchFind),
.Count = 1,
.Skip = 0
};
STATIC
EFI_STATUS
PatchForceInternalDiskIcons (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
Status = PatcherApplyGenericPatch (Patcher, &mIOAHCIPortPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply patch com.apple.driver.AppleAHCIPort - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success com.apple.driver.AppleAHCIPort\n"));
}
return Status;
}
STATIC
CONST UINT8
mAppleIoMapperPatchFind[] = {
0x44, 0x4D, 0x41, 0x52, 0x00 ///< "DMAR\0"
};
STATIC
CONST UINT8
mAppleIoMapperPatchReplace[] = {
0x52, 0x41, 0x4D, 0x44, 0x00 ///< "RAMD\0"
};
STATIC
PATCHER_GENERIC_PATCH
mAppleIoMapperPatch = {
.Comment = DEBUG_POINTER ("AppleIoMapper"),
.Base = NULL,
.Find = mAppleIoMapperPatchFind,
.Mask = NULL,
.Replace = mAppleIoMapperPatchReplace,
.ReplaceMask = NULL,
.Size = sizeof (mAppleIoMapperPatchFind),
.Count = 1,
.Skip = 0
};
STATIC
EFI_STATUS
PatchAppleIoMapperSupport (
IN OUT PATCHER_CONTEXT *Patcher OPTIONAL,
IN UINT32 KernelVersion
)
{
EFI_STATUS Status;
if (!OcMatchDarwinVersion (KernelVersion, KERNEL_VERSION_MOUNTAIN_LION_MIN, 0)) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping AppleIoMapper patch on %u\n", KernelVersion));
return EFI_SUCCESS;
}
if (Patcher == NULL) {
DEBUG ((DEBUG_INFO, "OCAK: Skipping %a on NULL Patcher on %u\n", __func__, KernelVersion));
return EFI_NOT_FOUND;
}
Status = PatcherApplyGenericPatch (Patcher, &mAppleIoMapperPatch);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "OCAK: Failed to apply patch com.apple.iokit.IOPCIFamily AppleIoMapper - %r\n", Status));
} else {
DEBUG ((DEBUG_INFO, "OCAK: Patch success com.apple.iokit.IOPCIFamily AppleIoMapper\n"));
}
return Status;
}
STATIC
CONST UINT8
mAppleDummyCpuPmPatchReplace[] = {
0xB8, 0x01, 0x00, 0x00, 0x00, ///< mov eax, 1
0xC3 ///< ret
};
STATIC
PATCHER_GENERIC_PATCH