This application uses QEMU's FwCfg interface to read a kernel specified on the QEMU command line. (See -kernel, -initrd, -append)
The application uses the LoadLinuxLib to boot the kernel image. Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com> --- OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.c | 161 ++++++++++++++++++++ .../Application/QemuKernelDxe/QemuKernelDxe.inf | 47 ++++++ OvmfPkg/OvmfPkgIa32.dsc | 3 + OvmfPkg/OvmfPkgIa32.fdf | 2 + OvmfPkg/OvmfPkgIa32X64.dsc | 3 + OvmfPkg/OvmfPkgIa32X64.fdf | 2 + OvmfPkg/OvmfPkgX64.dsc | 3 + OvmfPkg/OvmfPkgX64.fdf | 2 + 8 files changed, 223 insertions(+) create mode 100644 OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.c create mode 100644 OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf diff --git a/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.c b/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.c new file mode 100644 index 0000000..f9b7092 --- /dev/null +++ b/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.c @@ -0,0 +1,161 @@ +/** @file + + Copyright (c) 2006 - 2012, Intel Corporation. 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 <Uefi.h> + +#include <Library/BaseLib.h> +#include <Library/DebugLib.h> +#include <Library/LoadLinuxLib.h> +#include <Library/MemoryAllocationLib.h> +#include <Library/QemuFwCfgLib.h> +#include <Library/UefiBootServicesTableLib.h> + + +/** + Loads and boots UEFI Linux via the FwCfg interface. + + @retval EFI_NOT_FOUND - The Linux kernel was not found + +**/ +EFI_STATUS +EFIAPI +QemuFwCfgLoadLinux ( + VOID + ) +{ + EFI_STATUS Status; + UINTN KernelSize; + UINTN KernelInitialSize; + VOID *KernelBuf; + UINTN SetupSize; + VOID *SetupBuf; + UINTN CommandLineSize; + CHAR8 *CommandLine; + UINTN InitrdSize; + VOID* InitrdData; + struct boot_params *Bp; + + if (!QemuFwCfgIsAvailable ()) { + return EFI_NOT_FOUND; + } + + QemuFwCfgSelectItem (QemuFwCfgItemKernelSize); + KernelSize = (UINTN) QemuFwCfgRead64 (); + DEBUG ((EFI_D_INFO, "Kernel size: 0x%x\n", KernelSize)); + + QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupSize); + SetupSize = (UINTN) QemuFwCfgRead64 (); + DEBUG ((EFI_D_INFO, "Setup size: 0x%x\n", SetupSize)); + + if (KernelSize == 0 || SetupSize == 0) { + DEBUG ((EFI_D_INFO, "qemu -kernel was not used.\n")); + return EFI_NOT_FOUND; + } + + SetupBuf = LoadLinuxAllocateKernelSetupPages (EFI_SIZE_TO_PAGES (SetupSize)); + if (SetupBuf == NULL) { + DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel setup!\n")); + return EFI_OUT_OF_RESOURCES; + } + + DEBUG ((EFI_D_INFO, "Reading kernel setup image ...")); + QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupData); + QemuFwCfgReadBytes (SetupSize, SetupBuf); + DEBUG ((EFI_D_INFO, " [done]\n")); + + Status = LoadLinuxCheckKernelSetup (SetupBuf, SetupSize); + if (EFI_ERROR (Status)) { + return Status; + } + + KernelInitialSize = LoadLinuxGetKernelSize (SetupBuf, KernelSize); + if (KernelInitialSize == 0) { + return EFI_UNSUPPORTED; + } + + Bp = (struct boot_params*) SetupBuf; + + KernelBuf = LoadLinuxAllocateKernelPages ( + SetupBuf, + EFI_SIZE_TO_PAGES (KernelInitialSize)); + if (KernelBuf == NULL) { + DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel!\n")); + return EFI_OUT_OF_RESOURCES; + } + + DEBUG ((EFI_D_INFO, "Reading kernel image ...")); + QemuFwCfgSelectItem (QemuFwCfgItemKernelData); + QemuFwCfgReadBytes (KernelSize, KernelBuf); + DEBUG ((EFI_D_INFO, " [done]\n")); + + QemuFwCfgSelectItem (QemuFwCfgItemCommandLineSize); + CommandLineSize = (UINTN) QemuFwCfgRead64 (); + DEBUG ((EFI_D_INFO, "Command line size: 0x%x\n", CommandLineSize)); + + if (CommandLineSize > 0) { + CommandLine = LoadLinuxAllocateCommandLinePages ( + EFI_SIZE_TO_PAGES (CommandLineSize)); + QemuFwCfgSelectItem (QemuFwCfgItemCommandLineData); + QemuFwCfgReadBytes (CommandLineSize, CommandLine); + } else { + CommandLine = NULL; + } + + Status = LoadLinuxSetCommandLine (SetupBuf, CommandLine); + if (EFI_ERROR (Status)) { + return Status; + } + + QemuFwCfgSelectItem (QemuFwCfgItemInitrdSize); + InitrdSize = (UINTN) QemuFwCfgRead64 (); + DEBUG ((EFI_D_INFO, "Initrd size: 0x%x\n", InitrdSize)); + + if (InitrdSize > 0) { + InitrdData = LoadLinuxAllocateInitrdPages (EFI_SIZE_TO_PAGES (InitrdSize)); + DEBUG ((EFI_D_INFO, "Reading initrd image ...")); + QemuFwCfgSelectItem (QemuFwCfgItemInitrdData); + QemuFwCfgReadBytes (InitrdSize, InitrdData); + DEBUG ((EFI_D_INFO, " [done]\n")); + } else { + InitrdData = NULL; + } + + Status = LoadLinuxSetInitrd (SetupBuf, InitrdData, InitrdSize); + if (EFI_ERROR (Status)) { + return Status; + } + + return LoadLinux (KernelBuf, SetupBuf); +} + + +/** + + @param[in] ImageHandle The firmware allocated handle for the EFI image. + @param[in] SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The entry point is executed successfully. + @retval other Some error occurs when executing this entry point. + +**/ +EFI_STATUS +EFIAPI +UefiMain ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + QemuFwCfgLoadLinux (); + + return EFI_SUCCESS; +} diff --git a/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf b/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf new file mode 100644 index 0000000..ea929bb --- /dev/null +++ b/OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf @@ -0,0 +1,47 @@ +## @file +# QEMU Kernel boot application +# +# This application implements support for QEMU's -kernel parameter. +# +# Copyright (c) 2008 - 2012, Intel Corporation. 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. +# +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = QemuKernelDxe + FILE_GUID = 3f588f11-b6b2-4859-b867-9d4ccc2f9865 + MODULE_TYPE = UEFI_APPLICATION + VERSION_STRING = 1.0 + ENTRY_POINT = UefiMain + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 IPF EBC +# + +[Sources] + QemuKernelDxe.c + +[Packages] + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[LibraryClasses] + BaseLib + DebugLib + LoadLinuxLib + MemoryAllocationLib + QemuFwCfgLib + UefiApplicationEntryPoint + UefiBootServicesTableLib + diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc index c99cee3..6412a64 100644 --- a/OvmfPkg/OvmfPkgIa32.dsc +++ b/OvmfPkg/OvmfPkgIa32.dsc @@ -533,3 +533,6 @@ } OvmfPkg/SecureBootConfigDxe/SecureBootConfigDxe.inf !endif + + OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + diff --git a/OvmfPkg/OvmfPkgIa32.fdf b/OvmfPkg/OvmfPkgIa32.fdf index 36c9756..5a2c040 100644 --- a/OvmfPkg/OvmfPkgIa32.fdf +++ b/OvmfPkg/OvmfPkgIa32.fdf @@ -285,6 +285,8 @@ INF RuleOverride=CSM OvmfPkg/Csm/Csm16/Csm16.inf INF OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf +INF OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + ################################################################################ [FV.FVMAIN_COMPACT] diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc index 9173aae..879c91d 100644 --- a/OvmfPkg/OvmfPkgIa32X64.dsc +++ b/OvmfPkg/OvmfPkgIa32X64.dsc @@ -540,3 +540,6 @@ } OvmfPkg/SecureBootConfigDxe/SecureBootConfigDxe.inf !endif + + OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + diff --git a/OvmfPkg/OvmfPkgIa32X64.fdf b/OvmfPkg/OvmfPkgIa32X64.fdf index a762dc9..2d81500 100644 --- a/OvmfPkg/OvmfPkgIa32X64.fdf +++ b/OvmfPkg/OvmfPkgIa32X64.fdf @@ -285,6 +285,8 @@ INF RuleOverride=CSM OvmfPkg/Csm/Csm16/Csm16.inf INF OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf +INF OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + ################################################################################ [FV.FVMAIN_COMPACT] diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc index dce9ce1..b129568 100644 --- a/OvmfPkg/OvmfPkgX64.dsc +++ b/OvmfPkg/OvmfPkgX64.dsc @@ -538,3 +538,6 @@ } OvmfPkg/SecureBootConfigDxe/SecureBootConfigDxe.inf !endif + + OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + diff --git a/OvmfPkg/OvmfPkgX64.fdf b/OvmfPkg/OvmfPkgX64.fdf index fcdac03..5705939 100644 --- a/OvmfPkg/OvmfPkgX64.fdf +++ b/OvmfPkg/OvmfPkgX64.fdf @@ -285,6 +285,8 @@ INF RuleOverride=CSM OvmfPkg/Csm/Csm16/Csm16.inf INF OvmfPkg/QemuVideoDxe/QemuVideoDxe.inf +INF OvmfPkg/Application/QemuKernelDxe/QemuKernelDxe.inf + ################################################################################ [FV.FVMAIN_COMPACT] -- 1.7.9.5 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
