OvmfPkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / OvmfPkg / Library / PlatformBootManagerLib / QemuKernel.c

/** @file\r
\r
  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Uefi.h>\r
\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/LoadLinuxLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/QemuFwCfgLib.h>\r
#include <Library/ReportStatusCodeLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/UefiLib.h>\r
\r
\r
EFI_STATUS\r
TryRunningQemuKernel (\r
  VOID\r
  )\r
{\r
  EFI_STATUS                Status;\r
  UINTN                     KernelSize;\r
  UINTN                     KernelInitialSize;\r
  VOID                      *KernelBuf;\r
  UINTN                     SetupSize;\r
  VOID                      *SetupBuf;\r
  UINTN                     CommandLineSize;\r
  CHAR8                     *CommandLine;\r
  UINTN                     InitrdSize;\r
  VOID*                     InitrdData;\r
\r
  SetupBuf = NULL;\r
  SetupSize = 0;\r
  KernelBuf = NULL;\r
  KernelInitialSize = 0;\r
  CommandLine = NULL;\r
  CommandLineSize = 0;\r
  InitrdData = NULL;\r
  InitrdSize = 0;\r
\r
  if (!QemuFwCfgIsAvailable ()) {\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  QemuFwCfgSelectItem (QemuFwCfgItemKernelSize);\r
  KernelSize = (UINTN) QemuFwCfgRead64 ();\r
\r
  QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupSize);\r
  SetupSize = (UINTN) QemuFwCfgRead64 ();\r
\r
  if (KernelSize == 0 || SetupSize == 0) {\r
    DEBUG ((EFI_D_INFO, "qemu -kernel was not used.\n"));\r
    return EFI_NOT_FOUND;\r
  }\r
\r
  SetupBuf = LoadLinuxAllocateKernelSetupPages (EFI_SIZE_TO_PAGES (SetupSize));\r
  if (SetupBuf == NULL) {\r
    DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel setup!\n"));\r
    return EFI_OUT_OF_RESOURCES;\r
  }\r
\r
  DEBUG ((EFI_D_INFO, "Setup size: 0x%x\n", (UINT32) SetupSize));\r
  DEBUG ((EFI_D_INFO, "Reading kernel setup image ..."));\r
  QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupData);\r
  QemuFwCfgReadBytes (SetupSize, SetupBuf);\r
  DEBUG ((EFI_D_INFO, " [done]\n"));\r
\r
  Status = LoadLinuxCheckKernelSetup (SetupBuf, SetupSize);\r
  if (EFI_ERROR (Status)) {\r
    goto FreeAndReturn;\r
  }\r
\r
  Status = LoadLinuxInitializeKernelSetup (SetupBuf);\r
  if (EFI_ERROR (Status)) {\r
    goto FreeAndReturn;\r
  }\r
\r
  KernelInitialSize = LoadLinuxGetKernelSize (SetupBuf, KernelSize);\r
  if (KernelInitialSize == 0) {\r
    Status = EFI_UNSUPPORTED;\r
    goto FreeAndReturn;\r
  }\r
\r
  KernelBuf = LoadLinuxAllocateKernelPages (\r
                SetupBuf,\r
                EFI_SIZE_TO_PAGES (KernelInitialSize));\r
  if (KernelBuf == NULL) {\r
    DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel!\n"));\r
    Status = EFI_OUT_OF_RESOURCES;\r
    goto FreeAndReturn;\r
  }\r
\r
  DEBUG ((EFI_D_INFO, "Kernel size: 0x%x\n", (UINT32) KernelSize));\r
  DEBUG ((EFI_D_INFO, "Reading kernel image ..."));\r
  QemuFwCfgSelectItem (QemuFwCfgItemKernelData);\r
  QemuFwCfgReadBytes (KernelSize, KernelBuf);\r
  DEBUG ((EFI_D_INFO, " [done]\n"));\r
\r
  QemuFwCfgSelectItem (QemuFwCfgItemCommandLineSize);\r
  CommandLineSize = (UINTN) QemuFwCfgRead64 ();\r
\r
  if (CommandLineSize > 0) {\r
    CommandLine = LoadLinuxAllocateCommandLinePages (\r
                    EFI_SIZE_TO_PAGES (CommandLineSize));\r
    QemuFwCfgSelectItem (QemuFwCfgItemCommandLineData);\r
    QemuFwCfgReadBytes (CommandLineSize, CommandLine);\r
  } else {\r
    CommandLine = NULL;\r
  }\r
\r
  Status = LoadLinuxSetCommandLine (SetupBuf, CommandLine);\r
  if (EFI_ERROR (Status)) {\r
    goto FreeAndReturn;\r
  }\r
\r
  QemuFwCfgSelectItem (QemuFwCfgItemInitrdSize);\r
  InitrdSize = (UINTN) QemuFwCfgRead64 ();\r
\r
  if (InitrdSize > 0) {\r
    InitrdData = LoadLinuxAllocateInitrdPages (\r
                   SetupBuf,\r
                   EFI_SIZE_TO_PAGES (InitrdSize)\r
                   );\r
    DEBUG ((EFI_D_INFO, "Initrd size: 0x%x\n", (UINT32) InitrdSize));\r
    DEBUG ((EFI_D_INFO, "Reading initrd image ..."));\r
    QemuFwCfgSelectItem (QemuFwCfgItemInitrdData);\r
    QemuFwCfgReadBytes (InitrdSize, InitrdData);\r
    DEBUG ((EFI_D_INFO, " [done]\n"));\r
  } else {\r
    InitrdData = NULL;\r
  }\r
\r
  Status = LoadLinuxSetInitrd (SetupBuf, InitrdData, InitrdSize);\r
  if (EFI_ERROR (Status)) {\r
    goto FreeAndReturn;\r
  }\r
\r
  //\r
  // Signal the EVT_SIGNAL_READY_TO_BOOT event\r
  //\r
  EfiSignalEventReadyToBoot();\r
\r
  REPORT_STATUS_CODE (EFI_PROGRESS_CODE,\r
    (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_READY_TO_BOOT_EVENT));\r
\r
  Status = LoadLinux (KernelBuf, SetupBuf);\r
\r
FreeAndReturn:\r
  if (SetupBuf != NULL) {\r
    FreePages (SetupBuf, EFI_SIZE_TO_PAGES (SetupSize));\r
  }\r
  if (KernelBuf != NULL) {\r
    FreePages (KernelBuf, EFI_SIZE_TO_PAGES (KernelInitialSize));\r
  }\r
  if (CommandLine != NULL) {\r
    FreePages (CommandLine, EFI_SIZE_TO_PAGES (CommandLineSize));\r
  }\r
  if (InitrdData != NULL) {\r
    FreePages (InitrdData, EFI_SIZE_TO_PAGES (InitrdSize));\r
  }\r
\r
  return Status;\r
}\r
\r