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https://github.com/acidanthera/OpenCorePkg.git
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9ede6067c8
This quirk is needed to boot macOS 10.6 (and probably older) with 32-bit kernel in 32-bit OVMF. Similar to 64-bit mode, hibernation wake is not compatible with this quirk. This change also partially fixes compatibility with a few other quirks (e.g. AvoidRuntimeDefrag), but they are not really tested.
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/** @file
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Copyright (C) 2019-2024, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "../BootCompatInternal.h"
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#include <Guid/OcVariable.h>
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#include <IndustryStandard/AppleHibernate.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/OcBootManagementLib.h>
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#include <Library/OcDebugLogLib.h>
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#include <Library/OcDeviceTreeLib.h>
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#include <Library/OcMachoLib.h>
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#include <Library/OcMemoryLib.h>
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#include <Library/OcMiscLib.h>
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#include <Library/OcStringLib.h>
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#include <Library/PrintLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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VOID
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AppleMapPrepareKernelJump64 (
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IN OUT BOOT_COMPAT_CONTEXT *BootCompat,
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IN EFI_PHYSICAL_ADDRESS CallGate,
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IN UINTN HookAddress
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)
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{
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CALL_GATE_JUMP *CallGateJump;
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//
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// There is no reason to patch the kernel when we do not need it.
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//
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if ( !BootCompat->Settings.AvoidRuntimeDefrag
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&& !BootCompat->Settings.DiscardHibernateMap
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&& !BootCompat->Settings.AllowRelocationBlock
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&& !BootCompat->Settings.DisableSingleUser
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&& !BootCompat->Settings.ForceBooterSignature)
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{
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return;
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}
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//
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// Check whether we have address and abort if not.
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//
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if (CallGate == 0) {
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RUNTIME_DEBUG ((DEBUG_ERROR, "OCABC: Failed to find call gate address\n"));
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return;
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}
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CallGateJump = (VOID *)(UINTN)CallGate;
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//
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// Move call gate jump bytes front.
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// Performing this on the EfiBootRt KCG may bork the binary, but right now
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// only corrupts an unused string.
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//
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CopyMem (
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CallGateJump + 1,
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CallGateJump,
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ESTIMATED_CALL_GATE_SIZE
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);
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//
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// lea r8, [rip+XXX]
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// Passes KCG as third argument to be relocatable. macOS 13 Developer Beta 1
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// copies the KCG into a separately allocated buffer.
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//
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CallGateJump->LeaRip.Command[0] = 0x4C;
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CallGateJump->LeaRip.Command[1] = 0x8D;
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CallGateJump->LeaRip.Command[2] = 0x05;
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CallGateJump->LeaRip.Argument = sizeof (*CallGateJump) - sizeof (CallGateJump->LeaRip);
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CallGateJump->Jmp.Command = 0x25FF;
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CallGateJump->Jmp.Argument = 0x0;
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CallGateJump->Jmp.Address = HookAddress;
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}
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STATIC
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UINTN
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EFIAPI
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AppleMapPrepareKernelStateWorker64 (
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IN UINTN *Args,
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IN UINTN EntryPoint,
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IN KERNEL_CALL_GATE CallGate,
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IN UINTN *Arg1,
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IN UINTN Arg2
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)
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{
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BOOT_COMPAT_CONTEXT *BootCompatContext;
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BootCompatContext = GetBootCompatContext ();
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if (BootCompatContext->ServiceState.AppleHibernateWake) {
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AppleMapPrepareForHibernateWake (
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BootCompatContext,
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*Args
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);
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} else {
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AppleMapPrepareForBooting (
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BootCompatContext,
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(VOID *)*Args
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);
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}
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if (BootCompatContext->KernelState.RelocationBlock != 0) {
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//
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// Does not return.
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//
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AppleRelocationCallGate64 (
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Args,
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BootCompatContext,
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CallGate,
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Arg1,
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Arg2
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);
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}
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return CallGate (*Arg1, Arg2);
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}
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EFI_STATUS
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EFIAPI
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AppleMapPrepareKernelStateNew64 (
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IN UINTN SystemTable,
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IN OUT APPLE_EFI_BOOT_RT_KCG_ARGS *KcgArguments,
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IN KERNEL_CALL_GATE CallGate
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)
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{
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return AppleMapPrepareKernelStateWorker64 (
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&KcgArguments->Args,
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KcgArguments->EntryPoint,
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CallGate,
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&SystemTable,
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(UINTN)KcgArguments
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);
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}
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UINTN
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EFIAPI
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AppleMapPrepareKernelStateOld64 (
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IN UINTN Args,
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IN UINTN EntryPoint,
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IN KERNEL_CALL_GATE CallGate
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)
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{
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return AppleMapPrepareKernelStateWorker64 (
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&Args,
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EntryPoint,
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CallGate,
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&Args,
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EntryPoint
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);
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}
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