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4F
发表于 2016-7-18 14:53:08
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123456_ 发表于 2016-7-18 14:23 
说实话，实在搞不懂 三个的区别
有兴趣 去看 源代码 就知道了- --- /edk2/Clover/OsxAptioFixDrv/OsxAptioFixDrv.c 2016-07-17 08:25:39.000000000 +0800
- +++ /edk2/Clover/OsxAptioFixDrv/OsxAptioFix2Drv.c 2016-07-17 08:25:39.000000000 +0800
- @@ -1,6 +1,6 @@
- /**
-
- - UEFI driver for enabling loading of OSX by using memory relocation.
- + UEFI driver for enabling loading of OSX without memory relocation.
-
- by dmazar
-
- @@ -48,22 +48,18 @@
- CONST CHAR8* CloverRevision = REVISION_STR;
-
-
- -// defines the size of block that will be allocated for kernel image relocation,
- -// without RT and MMIO regions
- -// rehabman - Increase the size for ElCapitan to 128Mb 0x8000
- -// stinga11 - 0x6000
- -#define KERNEL_BLOCK_NO_RT_SIZE_PAGES 0x8000
- -
- // TRUE if we are doing hibernate wake
- BOOLEAN gHibernateWake = FALSE;
-
-
- -// placeholders for storing original Boot Services functions
- +// placeholders for storing original Boot and RT Services functions
- EFI_ALLOCATE_PAGES gStoredAllocatePages = NULL;
- EFI_GET_MEMORY_MAP gStoredGetMemoryMap = NULL;
- EFI_EXIT_BOOT_SERVICES gStoredExitBootServices = NULL;
- EFI_IMAGE_START gStartImage = NULL;
- EFI_HANDLE_PROTOCOL gHandleProtocol = NULL;
- +EFI_SET_VIRTUAL_ADDRESS_MAP gStoredSetVirtualAddressMap = NULL;
- +UINT32 OrgRTCRC32 = 0;
-
-
- // monitoring AlocatePages
- @@ -143,78 +139,6 @@
- }
-
-
- -/** Calculate the size of reloc block.
- - * gRelocSizePages = KERNEL_BLOCK_NO_RT_SIZE_PAGES + RT&MMIO pages
- - */
- -EFI_STATUS
- -CalculateRelocBlockSize(VOID)
- -{
- - EFI_STATUS Status;
- - UINTN NumPagesRT;
- -
- -
- - // Sum pages needed for RT and MMIO areas
- - Status = GetNumberOfRTPages(&NumPagesRT);
- - if (EFI_ERROR(Status)) {
- - DBGnvr("GetNumberOfRTPages: %r\n", Status);
- - DBG("OsxAptioFixDrv: CalculateRelocBlockSize(): GetNumberOfRTPages: %r\n", Status);
- - Print(L"OsxAptioFixDrv: CalculateRelocBlockSize(): GetNumberOfRTPages: %r\n", Status);
- - return Status;
- - }
- -
- - gRelocSizePages = KERNEL_BLOCK_NO_RT_SIZE_PAGES + NumPagesRT;
- - DBGnvr("Reloc block: %x pages (%d MB) = kernel %x (%d MB) + RT&MMIO %x (%d MB)\n",
- - gRelocSizePages, EFI_PAGES_TO_SIZE(gRelocSizePages) >> 20,
- - KERNEL_BLOCK_NO_RT_SIZE_PAGES, EFI_PAGES_TO_SIZE(KERNEL_BLOCK_NO_RT_SIZE_PAGES) >> 20,
- - NumPagesRT, EFI_PAGES_TO_SIZE(NumPagesRT) >> 20
- - );
- -
- - return Status;
- -}
- -
- -/** Allocate free block on top of mem for kernel image relocation (will be returned to boot.efi for kernel boot image). */
- -EFI_STATUS
- -AllocateRelocBlock()
- -{
- - EFI_STATUS Status;
- - EFI_PHYSICAL_ADDRESS Addr;
- -
- -
- - // calculate the needed size for reloc block
- - CalculateRelocBlockSize();
- -
- - gRelocBase = 0;
- - Addr = 0x100000000; // max address
- - Status = AllocatePagesFromTop(EfiBootServicesData, gRelocSizePages, &Addr);
- - if (Status != EFI_SUCCESS) {
- - DBG("OsxAptioFixDrv: AllocateRelocBlock(): can not allocate relocation block (0x%x pages below 0x%lx): %r\n",
- - gRelocSizePages, Addr, Status);
- - Print(L"OsxAptioFixDrv: AllocateRelocBlock(): can not allocate relocation block (0x%x pages below 0x%lx): %r\n",
- - gRelocSizePages, Addr, Status);
- - } else {
- - gRelocBase = Addr;
- - DBG("OsxAptioFixDrv: AllocateRelocBlock(): gRelocBase set to %lx - %lx\n", gRelocBase, gRelocBase + EFI_PAGES_TO_SIZE(gRelocSizePages) - 1);
- - DBGnvr("gRelocBase set to %lx - %lx\n", gRelocBase, gRelocBase + EFI_PAGES_TO_SIZE(gRelocSizePages) - 1);
- - }
- -
- - // set reloc addr in runtime vars for boot manager
- - //Print(L"OsxAptioFixDrv: AllocateRelocBlock(): gRelocBase set to %lx - %lx\n", gRelocBase, gRelocBase + EFI_PAGES_TO_SIZE(gRelocSizePages) - 1);
- - /*Status = */gRT->SetVariable(L"OsxAptioFixDrv-RelocBase", &gEfiAppleBootGuid,
- - /* EFI_VARIABLE_NON_VOLATILE |*/ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
- - sizeof(gRelocBase) ,&gRelocBase);
- - return Status;
- -}
- -
- -/** Releases relocation block. */
- -EFI_STATUS
- -FreeRelocBlock()
- -{
- -
- - return gBS->FreePages(gRelocBase, gRelocSizePages);
- -}
- -
- -
- -
- /** gBS->HandleProtocol override:
- * Boot.efi requires EfiGraphicsOutputProtocol on ConOutHandle, but it is not present
- * there on Aptio 2.0. EfiGraphicsOutputProtocol exists on some other handle.
- @@ -278,44 +202,25 @@
-
- UpperAddr = *Memory + EFI_PAGES_TO_SIZE(NumberOfPages);
-
- - // check if the requested mem can be served from reloc block
- - // the upper address is compared to the size of the relocation block to achieve Address + gRelocBase for all
- - // allocations, so that the entire block can be copied to the proper location on kernel entry
- - // Comparing only the number of pages will not only give wrong results as gRelocSizePages is not decreased,
- - // but also implies memory is 'stacked', which it is not.
- - if (UpperAddr >= EFI_PAGES_TO_SIZE(gRelocSizePages)) {
- - // no - exceeds our block - signal error
- - Print(L"OsxAptipFixDrv: Error - requested memory exceeds our allocated relocation block\n");
- - Print(L"Requested mem: %lx - %lx, Pages: %x, Size: %lx\n",
- - *Memory, UpperAddr - 1,
- - NumberOfPages, EFI_PAGES_TO_SIZE(NumberOfPages)
- - );
- - Print(L"Reloc block: %lx - %lx, Pages: %x, Size: %lx\n",
- - gRelocBase, gRelocBase + EFI_PAGES_TO_SIZE(gRelocSizePages) - 1,
- - gRelocSizePages, EFI_PAGES_TO_SIZE(gRelocSizePages)
- - );
- - Print(L"Reloc block can handle mem requests: %lx - %lx\n",
- - 0, EFI_PAGES_TO_SIZE(gRelocSizePages) - 1
- - );
- - Print(L"Exiting in 30 secs ...\n");
- - gBS->Stall(30 * 1000000);
- -
- - return EFI_OUT_OF_RESOURCES;
- - }
- -
- // store min and max mem - can be used later to determine start and end of kernel boot image
- if (gMinAllocatedAddr == 0 || *Memory < gMinAllocatedAddr) gMinAllocatedAddr = *Memory;
- if (UpperAddr > gMaxAllocatedAddr) gMaxAllocatedAddr = UpperAddr;
-
- - // give it from our allocated block
- - *Memory += gRelocBase;
- - //Status = gStoredAllocatePages(Type, MemoryType, NumberOfPages, Memory);
- -// FromRelocBlock = TRUE;
- - Status = EFI_SUCCESS;
- + Status = gStoredAllocatePages(Type, MemoryType, NumberOfPages, Memory);
- +// FromRelocBlock = FALSE;
- +
- + } else if (gHibernateWake && Type == AllocateAnyPages && MemoryType == EfiLoaderData) {
- + // called from boot.efi during hibernate wake
- + // first such allocation is for hibernate image
- + Status = gStoredAllocatePages(Type, MemoryType, NumberOfPages, Memory);
- + if (gHibernateImageAddress == 0 && Status == EFI_SUCCESS) {
- + gHibernateImageAddress = *Memory;
- + }
-
- } else {
- // default page allocation
- Status = gStoredAllocatePages(Type, MemoryType, NumberOfPages, Memory);
- +
- }
-
- //DBG("AllocatePages(%s, %s, %x, %lx/%lx) = %r %c\n",
- @@ -344,7 +249,7 @@
- DBGnvr("GetMemoryMap: %p = %r\n", MemoryMap, Status);
- if (Status == EFI_SUCCESS) {
- FixMemMap(*MemoryMapSize, MemoryMap, *DescriptorSize, *DescriptorVersion);
- - //ShrinkMemMap(MemoryMapSize, MemoryMap, *DescriptorSize, *DescriptorVersion);
- + ShrinkMemMap(MemoryMapSize, MemoryMap, *DescriptorSize, *DescriptorVersion);
- //PrintMemMap(*MemoryMapSize, MemoryMap, *DescriptorSize, *DescriptorVersion);
-
- // remember last/final memmap
- @@ -368,9 +273,18 @@
- {
- EFI_STATUS Status;
- UINTN NewMapKey;
- - UINTN SlideAddr = 0;
- - VOID *MachOImage = NULL;
- -
- + //UINTN SlideAddr = 0;
- + //VOID *MachOImage = NULL;
- + IOHibernateImageHeader *ImageHeader = NULL;
- +
- + // we need hibernate image address for wake
- + if (gHibernateWake && gHibernateImageAddress == 0) {
- + Print(L"OsxAptioFix error: Doing hibernate wake, but did not find hibernate image address.");
- + Print(L"... waiting 5 secs ...\n");
- + gBS->Stall(5000000);
- + return EFI_INVALID_PARAMETER;
- + }
- +
- // for tests: we can just return EFI_SUCCESS and continue using Print for debug.
- // Status = EFI_SUCCESS;
- //Print(L"ExitBootServices()\n");
- @@ -402,17 +316,77 @@
- }
-
- }
- -
- +
- if (EFI_ERROR(Status)) {
- Print(L"... waiting 10 secs ...\n");
- gBS->Stall(10*1000000);
- return Status;
- }
-
- - DBG("ExitBootServices: gMinAllocatedAddr: %lx, gMaxAllocatedAddr: %lx\n", gMinAllocatedAddr, gMaxAllocatedAddr);
- - MachOImage = (VOID*)(UINTN)(gRelocBase + 0x200000);
- - KernelEntryFromMachOPatchJump(MachOImage, SlideAddr);
- + if (!gHibernateWake) {
- + // normal boot
- + DBG("ExitBootServices: gMinAllocatedAddr: %lx, gMaxAllocatedAddr: %lx\n", gMinAllocatedAddr, gMaxAllocatedAddr);
- +
- + //SlideAddr = gMinAllocatedAddr - 0x100000;
- + //MachOImage = (VOID*)(UINTN)(SlideAddr + 0x200000);
- + //KernelEntryFromMachOPatchJump(MachOImage, SlideAddr);
- +
- + } else {
- + // hibernate wake
- +
- + // at this stage HIB section is not yet copied from sleep image to it's
- + // proper memory destination. so we'll patch entry point in sleep image.
- + ImageHeader = (IOHibernateImageHeader *)(UINTN)gHibernateImageAddress;
- + KernelEntryPatchJump( ((UINT32)(UINTN)&(ImageHeader->fileExtentMap[0])) + ImageHeader->fileExtentMapSize + ImageHeader->restore1CodeOffset );
- + }
- +
- + return Status;
- +}
- +
- +
- +/** gRT->SetVirtualAddressMap override:
- + * Fixes virtualizing of RT services.
- + */
- +EFI_STATUS EFIAPI
- +OvrSetVirtualAddressMap(
- + IN UINTN MemoryMapSize,
- + IN UINTN DescriptorSize,
- + IN UINT32 DescriptorVersion,
- + IN EFI_MEMORY_DESCRIPTOR *VirtualMap
- +)
- +{
- + EFI_STATUS Status;
- + UINT32 EfiSystemTable;
- +
- + DBG("->SetVirtualAddressMap(%d, %d, 0x%x, %p) START ...\n", MemoryMapSize, DescriptorSize, DescriptorVersion, VirtualMap);
- + DBGnvr("->SetVirtualAddressMap(%d, %d, 0x%x, %p) START ...\n", MemoryMapSize, DescriptorSize, DescriptorVersion, VirtualMap);
-
- + // restore origs
- + gRT->Hdr.CRC32 = OrgRTCRC32;
- + gRT->SetVirtualAddressMap = gStoredSetVirtualAddressMap;
- +
- + // Protect RT data areas from relocation by marking then MemMapIO
- + ProtectRtDataFromRelocation(MemoryMapSize, DescriptorSize, DescriptorVersion, VirtualMap);
- +
- + // Remember physical sys table addr
- + EfiSystemTable = (UINT32)(UINTN)gST;
- +
- + // virtualize RT services with all needed fixes
- + Status = ExecSetVirtualAddressesToMemMap(MemoryMapSize, DescriptorSize, DescriptorVersion, VirtualMap);
- +
- + CopyEfiSysTableToSeparateRtDataArea(&EfiSystemTable);
- +
- + // we will defragment RT data and code that is left unprotected.
- + // this will also mark those as AcpiNVS and by this protect it
- + // from boot.efi relocation and zeroing
- + DefragmentRuntimeServices(MemoryMapSize,
- + DescriptorSize,
- + DescriptorVersion,
- + VirtualMap,
- + NULL,
- + gHibernateWake ? FALSE : TRUE
- + );
- +
- return Status;
- }
-
- @@ -425,17 +399,15 @@
-
- DBGnvr("\nBACK FROM KERNEL: BootArgs = %x, KernelEntry: %x, Kernel called in %s bit mode\n", bootArgs, AsmKernelEntry, (ModeX64 ? L"64" : L"32"));
-
- - bootArgs = FixBootingWithRelocBlock(bootArgs, ModeX64);
- + if (!gHibernateWake) {
- + bootArgs = FixBootingWithoutRelocBlock(bootArgs, ModeX64);
- + } else {
- + bootArgs = FixHibernateWakeWithoutRelocBlock(bootArgs, ModeX64);
- + }
-
- DBGnvr("BACK TO KERNEL: BootArgs = %x, KImgStartReloc = %x, KImgStart = %x, KImgSize = %x\n",
- bootArgs, AsmKernelImageStartReloc, AsmKernelImageStart, AsmKernelImageSize);
-
- - // debug for jumping back to kernel
- - // put HLT to kernel entry point to stop there
- - //SetMem((VOID*)(UINTN)(AsmKernelEntry + gRelocBase), 1, 0xF4);
- - // put 0 to kernel entry point to restart
- - //SetMem64((VOID*)(UINTN)(AsmKernelEntry + gRelocBase), 1, 0);
- -
- return bootArgs;
- }
-
- @@ -448,7 +420,12 @@
- * If started with ImgContext->JumpBuffer, then it will return with LongJump().
- */
- EFI_STATUS
- -RunImageWithOverrides(IN EFI_HANDLE ImageHandle, OUT UINTN *ExitDataSize, OUT CHAR16 **ExitData OPTIONAL)
- +RunImageWithOverrides(
- + IN EFI_HANDLE ImageHandle,
- + IN EFI_LOADED_IMAGE_PROTOCOL *Image,
- + OUT UINTN *ExitDataSize,
- + OUT CHAR16 **ExitData OPTIONAL
- + )
- {
- EFI_STATUS Status;
-
- @@ -466,12 +443,6 @@
- return Status;
- }
-
- - // allocate block for kernel image relocation
- - Status = AllocateRelocBlock();
- - if (EFI_ERROR(Status)) {
- - return Status;
- - }
- -
- // clear monitoring vars
- gMinAllocatedAddr = 0;
- gMaxAllocatedAddr = 0;
- @@ -491,6 +462,17 @@
- gBS->Hdr.CRC32 = 0;
- gBS->CalculateCrc32(gBS, gBS->Hdr.HeaderSize, &gBS->Hdr.CRC32);
-
- + OrgRTCRC32 = gRT->Hdr.CRC32;
- + gStoredSetVirtualAddressMap = gRT->SetVirtualAddressMap;
- + gRT->SetVirtualAddressMap = OvrSetVirtualAddressMap;
- + gRT->Hdr.CRC32 = 0;
- + gBS->CalculateCrc32(gRT, gRT->Hdr.HeaderSize, &gRT->Hdr.CRC32);
- +
- + // force boot.efi to use our copy od system table
- + DBG("StartImage: orig sys table: %p\n", Image->SystemTable);
- + Image->SystemTable = (EFI_SYSTEM_TABLE *)(UINTN)gSysTableRtArea;
- + DBG("StartImage: new sys table: %p\n", Image->SystemTable);
- +
- // run image
- Status = gStartImage(ImageHandle, ExitDataSize, ExitData);
-
- @@ -506,8 +488,8 @@
- gBS->Hdr.CRC32 = 0;
- gBS->CalculateCrc32(gBS, gBS->Hdr.HeaderSize, &gBS->Hdr.CRC32);
-
- - // release reloc block
- - FreeRelocBlock();
- + gRT->SetVirtualAddressMap = gStoredSetVirtualAddressMap;
- + gBS->CalculateCrc32(gRT, gRT->Hdr.HeaderSize, &gRT->Hdr.CRC32);
-
- return Status;
- }
- @@ -548,20 +530,19 @@
- DBG("CloseProtocol error: %r\n", Status);
- }
-
- - //the presence of the variable means HibernateWake
- - //if the wake is canceled then the variable must be deleted
- - Status = gRT->GetVariable(L"boot-switch-vars", &gEfiAppleBootGuid, NULL, &Size, NULL);
- - gHibernateWake = (Status == EFI_BUFFER_TOO_SMALL);
- -
- // check if this is boot.efi
- - if (StrStriBasic(FilePathText, L"boot.efi") && !gHibernateWake) {
- + if (StrStriBasic(FilePathText, L"boot.efi")) {
- + //the presence of the variable means HibernateWake
- + //if the wake is canceled then the variable must be deleted
- + Status = gRT->GetVariable(L"boot-switch-vars", &gEfiAppleBootGuid, NULL, &Size, NULL);
- + gHibernateWake = (Status == EFI_BUFFER_TOO_SMALL);
-
- - Print(L"OsxAptioFixDrv: Starting overrides for %s\nUsing reloc block: yes, hibernate wake: %s \n",
- + Print(L"OsxAptioFix2Drv: Starting overrides for %s\nUsing reloc block: no, hibernate wake: %s \n",
- FilePathText, gHibernateWake ? L"yes" : L"no");
- //gBS->Stall(2000000);
-
- // run with our overrides
- - Status = RunImageWithOverrides(ImageHandle, ExitDataSize, ExitData);
- + Status = RunImageWithOverrides(ImageHandle, Image, ExitDataSize, ExitData);
-
- } else {
- // call original function to do the job
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