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Ventoy/EDK2/edk2_mod/edk2-edk2-stable201911/MdeModulePkg/Application/VDiskChain/VDiskChain.c

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/******************************************************************************
* VDiskChain.c
*
* Copyright (c) 2021, longpanda <admin@ventoy.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include <Uefi.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiApplicationEntryPoint.h>
#include <Library/UefiDecompressLib.h>
#include <Protocol/LoadedImage.h>
#include <Guid/FileInfo.h>
#include <Guid/FileSystemInfo.h>
#include <Protocol/BlockIo.h>
#include <Protocol/RamDisk.h>
#include <Protocol/SimpleFileSystem.h>
#include <VDiskChain.h>
BOOLEAN gVDiskDebugPrint = FALSE;
vdisk_block_data gVDiskBlockData;
/* Boot filename */
CONST CHAR16 *gEfiBootFileName[] =
{
L"@",
EFI_REMOVABLE_MEDIA_FILE_NAME,
#if defined (MDE_CPU_IA32)
L"\\EFI\\BOOT\\GRUBIA32.EFI",
L"\\EFI\\BOOT\\BOOTia32.EFI",
L"\\EFI\\BOOT\\bootia32.efi",
L"\\efi\\boot\\bootia32.efi",
#elif defined (MDE_CPU_X64)
L"\\EFI\\BOOT\\GRUBX64.EFI",
L"\\EFI\\BOOT\\BOOTx64.EFI",
L"\\EFI\\BOOT\\bootx64.efi",
L"\\efi\\boot\\bootx64.efi",
#elif defined (MDE_CPU_ARM)
L"\\EFI\\BOOT\\GRUBARM.EFI",
L"\\EFI\\BOOT\\BOOTarm.EFI",
L"\\EFI\\BOOT\\bootarm.efi",
L"\\efi\\boot\\bootarm.efi",
#elif defined (MDE_CPU_AARCH64)
L"\\EFI\\BOOT\\GRUBAA64.EFI",
L"\\EFI\\BOOT\\BOOTaa64.EFI",
L"\\EFI\\BOOT\\bootaa64.efi",
L"\\efi\\boot\\bootaa64.efi",
#endif
};
UINT8 *g_disk_buf_addr = NULL;
UINT64 g_disk_buf_size = 0;
STATIC EFI_GET_VARIABLE g_org_get_variable = NULL;
STATIC EFI_EXIT_BOOT_SERVICES g_org_exit_boot_service = NULL;
VOID EFIAPI VDiskDebug(IN CONST CHAR8 *Format, ...)
{
VA_LIST Marker;
CHAR16 Buffer[512];
VA_START (Marker, Format);
UnicodeVSPrintAsciiFormat(Buffer, sizeof(Buffer), Format, Marker);
VA_END (Marker);
gST->ConOut->OutputString(gST->ConOut, Buffer);
}
VOID EFIAPI vdisk_clear_input(VOID)
{
EFI_INPUT_KEY Key;
gST->ConIn->Reset(gST->ConIn, FALSE);
while (EFI_SUCCESS == gST->ConIn->ReadKeyStroke(gST->ConIn, &Key))
{
;
}
gST->ConIn->Reset(gST->ConIn, FALSE);
}
STATIC EFI_STATUS EFIAPI vdisk_load_image
(
IN EFI_HANDLE ImageHandle,
IN EFI_DEVICE_PATH_PROTOCOL *pDevicePath,
IN CONST CHAR16 *FileName,
IN UINTN FileNameLen,
OUT EFI_HANDLE *Image
)
{
EFI_STATUS Status = EFI_SUCCESS;
CHAR16 TmpBuf[256] = {0};
FILEPATH_DEVICE_PATH *pFilePath = NULL;
EFI_DEVICE_PATH_PROTOCOL *pImgPath = NULL;
pFilePath = (FILEPATH_DEVICE_PATH *)TmpBuf;
pFilePath->Header.Type = MEDIA_DEVICE_PATH;
pFilePath->Header.SubType = MEDIA_FILEPATH_DP;
pFilePath->Header.Length[0] = FileNameLen + sizeof(EFI_DEVICE_PATH_PROTOCOL);
pFilePath->Header.Length[1] = 0;
CopyMem(pFilePath->PathName, FileName, FileNameLen);
pImgPath = AppendDevicePathNode(pDevicePath, (EFI_DEVICE_PATH_PROTOCOL *)pFilePath);
if (!pImgPath)
{
return EFI_NOT_FOUND;
}
Status = gBS->LoadImage(FALSE, ImageHandle, pImgPath, NULL, 0, Image);
debug("Load Image File %r DP: <%s>", Status, ConvertDevicePathToText(pImgPath, FALSE, FALSE));
FreePool(pImgPath);
return Status;
}
STATIC EFI_STATUS EFIAPI vdisk_decompress_vdisk(IN EFI_LOADED_IMAGE_PROTOCOL *pImageInfo)
{
UINT32 Size;
UINT32 DestinationSize;
UINT32 ScratchSize;
UINT8 *buf;
VOID *ScratchBuf;
EFI_STATUS Status = EFI_SUCCESS;
(VOID)pImageInfo;
vdisk_get_vdisk_raw(&buf, &Size);
UefiDecompressGetInfo(buf + VDISK_MAGIC_LEN, Size - VDISK_MAGIC_LEN, &DestinationSize, &ScratchSize);
debug("vdisk: size:%u realsize:%u", Size, DestinationSize);
g_disk_buf_size = DestinationSize;
g_disk_buf_addr = AllocatePool(DestinationSize);
ScratchBuf = AllocatePool(ScratchSize);
Status = UefiDecompress(buf + VDISK_MAGIC_LEN, g_disk_buf_addr, ScratchBuf);
FreePool(ScratchBuf);
debug("Status:%r %p %u", Status, g_disk_buf_addr, (UINT32)g_disk_buf_size);
return EFI_SUCCESS;
}
STATIC EFI_STATUS vdisk_patch_vdisk_path(CHAR16 *pos)
{
UINTN i;
UINTN j;
CHAR16 *end;
CHAR8 *buf = (char *)g_disk_buf_addr;
if (*pos == L'\"')
{
pos++;
}
end = StrStr(pos, L".vtoy");
end += 5;//string length
for (i = 0; i < g_disk_buf_size; i++)
{
if (*(UINT32 *)(buf + i) == 0x59595959)
{
for (j = 0; j < 300; j++)
{
if (buf[i + j] != 'Y')
{
break;
}
}
if (j >= 300)
{
break;
}
}
}
if (i >= g_disk_buf_size)
{
debug("No need to fill vdisk path");
return 0;
}
debug("Fill vdisk path at %d", i);
while (pos != end)
{
buf[i++] = (CHAR8)(*pos++);
}
buf[i++] = '\"';
while (buf[i] == 'Y' || buf[i] == '\"')
{
buf[i] = ' ';
i++;
}
return 0;
}
EFI_STATUS EFIAPI vdisk_get_variable_wrapper
(
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes, OPTIONAL
IN OUT UINTN *DataSize,
OUT VOID *Data OPTIONAL
)
{
EFI_STATUS Status = EFI_SUCCESS;
Status = g_org_get_variable(VariableName, VendorGuid, Attributes, DataSize, Data);
if (StrCmp(VariableName, L"SecureBoot") == 0)
{
if ((*DataSize == 1) && Data)
{
*(UINT8 *)Data = 0;
}
}
return Status;
}
EFI_STATUS EFIAPI vdisk_exit_boot_service_wrapper
(
IN EFI_HANDLE ImageHandle,
IN UINTN MapKey
)
{
if (g_org_get_variable)
{
gRT->GetVariable = g_org_get_variable;
g_org_get_variable = NULL;
}
return g_org_exit_boot_service(ImageHandle, MapKey);
}
STATIC EFI_STATUS EFIAPI vdisk_disable_secure_boot(IN EFI_HANDLE ImageHandle)
{
/* step1: wrapper security protocol. */
/* Do we still need it since we have been loaded ? */
/* step2: fake SecureBoot variable */
g_org_exit_boot_service = gBS->ExitBootServices;
gBS->ExitBootServices = vdisk_exit_boot_service_wrapper;
g_org_get_variable = gRT->GetVariable;
gRT->GetVariable = vdisk_get_variable_wrapper;
return EFI_SUCCESS;
}
STATIC EFI_STATUS EFIAPI vdisk_parse_cmdline(IN EFI_HANDLE ImageHandle)
{
CHAR16 *Pos = NULL;
CHAR16 *pCmdLine = NULL;
EFI_STATUS Status = EFI_SUCCESS;
EFI_LOADED_IMAGE_PROTOCOL *pImageInfo = NULL;
Status = gBS->HandleProtocol(ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **)&pImageInfo);
if (EFI_ERROR(Status))
{
VDiskDebug("Failed to handle load image protocol %r\n", Status);
return Status;
}
pCmdLine = (CHAR16 *)AllocatePool(pImageInfo->LoadOptionsSize + 4);
SetMem(pCmdLine, pImageInfo->LoadOptionsSize + 4, 0);
CopyMem(pCmdLine, pImageInfo->LoadOptions, pImageInfo->LoadOptionsSize);
if (StrStr(pCmdLine, L"debug"))
{
gVDiskDebugPrint = TRUE;
}
debug("cmdline:<%s>", pCmdLine);
vdisk_debug_pause();
Pos = StrStr(pCmdLine, L"vdisk=");
if (NULL == Pos || NULL == StrStr(pCmdLine, L".vtoy"))
{
VDiskDebug("vdisk parameter not found!\n");
return EFI_NOT_FOUND;
}
vdisk_decompress_vdisk(pImageInfo);
vdisk_patch_vdisk_path(Pos + 6);
if (StrStr(pCmdLine, L"secureboot=off"))
{
vdisk_disable_secure_boot(ImageHandle);
}
FreePool(pCmdLine);
return EFI_SUCCESS;
}
EFI_STATUS EFIAPI vdisk_boot(IN EFI_HANDLE ImageHandle)
{
UINTN t = 0;
UINTN i = 0;
UINTN j = 0;
UINTN Find = 0;
UINTN Count = 0;
EFI_HANDLE Image = NULL;
EFI_HANDLE *Handles = NULL;
EFI_STATUS Status = EFI_SUCCESS;
EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *pFile = NULL;
EFI_DEVICE_PATH_PROTOCOL *pDevPath = NULL;
for (t = 0; t < 3; t++)
{
Count = 0;
Handles = NULL;
Status = gBS->LocateHandleBuffer(ByProtocol, &gEfiSimpleFileSystemProtocolGuid,
NULL, &Count, &Handles);
if (EFI_ERROR(Status))
{
return Status;
}
debug("vdisk_boot fs count:%u", Count);
for (i = 0; i < Count; i++)
{
Status = gBS->HandleProtocol(Handles[i], &gEfiSimpleFileSystemProtocolGuid, (VOID **)&pFile);
if (EFI_ERROR(Status))
{
continue;
}
debug("FS:%u Protocol:%p OpenVolume:%p", i, pFile, pFile->OpenVolume);
Status = gBS->OpenProtocol(Handles[i], &gEfiDevicePathProtocolGuid,
(VOID **)&pDevPath,
ImageHandle,
Handles[i],
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (EFI_ERROR(Status))
{
debug("Failed to open device path protocol %r", Status);
continue;
}
debug("Handle:%p FS DP: <%s>", Handles[i], ConvertDevicePathToText(pDevPath, FALSE, FALSE));
if (CompareMem(gVDiskBlockData.Path, pDevPath, gVDiskBlockData.DevicePathCompareLen))
{
debug("Not ventoy disk file system");
continue;
}
for (j = 1; j < ARRAY_SIZE(gEfiBootFileName); j++)
{
Status = vdisk_load_image(ImageHandle, pDevPath, gEfiBootFileName[j],
StrSize(gEfiBootFileName[j]), &Image);
if (EFI_SUCCESS == Status)
{
break;
}
debug("Failed to load image %r <%s>", Status, gEfiBootFileName[j]);
}
if (j >= ARRAY_SIZE(gEfiBootFileName))
{
continue;
}
Find++;
debug("Find boot file, now try to boot .....");
vdisk_debug_pause();
if (gVDiskDebugPrint)
{
gST->ConIn->Reset(gST->ConIn, FALSE);
}
/* can't add debug print here */
//ventoy_wrapper_system();
Status = gBS->StartImage(Image, NULL, NULL);
if (EFI_ERROR(Status))
{
debug("Failed to start image %r", Status);
sleep(3);
gBS->UnloadImage(Image);
break;
}
}
FreePool(Handles);
if (Find == 0)
{
debug("Fs not found, now wait and retry...");
sleep(2);
}
}
if (Find == 0)
{
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
EFI_STATUS EFIAPI VDiskChainEfiMain
(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status = EFI_SUCCESS;
gST->ConOut->ClearScreen(gST->ConOut);
vdisk_clear_input();
Status = vdisk_parse_cmdline(ImageHandle);
if (EFI_ERROR(Status))
{
return Status;
}
vdisk_install_blockio(ImageHandle, g_disk_buf_size);
vdisk_debug_pause();
Status = vdisk_boot(ImageHandle);
gBS->DisconnectController(gVDiskBlockData.Handle, NULL, NULL);
gBS->UninstallMultipleProtocolInterfaces(gVDiskBlockData.Handle,
&gEfiBlockIoProtocolGuid, &gVDiskBlockData.BlockIo,
&gEfiDevicePathProtocolGuid, gVDiskBlockData.Path,
NULL);
if (EFI_NOT_FOUND == Status)
{
gST->ConOut->OutputString(gST->ConOut, L"No bootfile found for UEFI!\r\n");
gST->ConOut->OutputString(gST->ConOut, L"Maybe the image does not support " VENTOY_UEFI_DESC L"!\r\n");
sleep(30);
}
vdisk_clear_input();
gST->ConOut->ClearScreen(gST->ConOut);
return EFI_SUCCESS;
}
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