diff options
| author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-11-02 18:28:17 +0000 |
|---|---|---|
| committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-11-02 18:28:17 +0000 |
| commit | 52fba28994e9d54e552264a76cda1834122f04d7 (patch) | |
| tree | d9860665969a4291c20604a80889b8b0b007631a /OvmfPkg/Library/PlatformBdsLib/QemuKernel.c | |
| parent | 3c0a051fa2bc443cee65d25fda74771f47cbb8eb (diff) | |
| download | edk2-platforms-52fba28994e9d54e552264a76cda1834122f04d7.tar.xz | |
OvmfPkg: Add support for qemu's -kernel parameter
If QEMU's -kernel parameter was used, then download the
kernel from the FwCfg interface, and launch it. (See -kernel,
-initrd, -append) The application uses the LoadLinuxLib to boot
the kernel image.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13923 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/Library/PlatformBdsLib/QemuKernel.c')
| -rw-r--r-- | OvmfPkg/Library/PlatformBdsLib/QemuKernel.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PlatformBdsLib/QemuKernel.c b/OvmfPkg/Library/PlatformBdsLib/QemuKernel.c new file mode 100644 index 0000000000..fa8bcbc9bf --- /dev/null +++ b/OvmfPkg/Library/PlatformBdsLib/QemuKernel.c @@ -0,0 +1,159 @@ +/** @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>
+
+
+EFI_STATUS
+TryRunningQemuKernel (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINTN KernelSize;
+ UINTN KernelInitialSize;
+ VOID *KernelBuf;
+ UINTN SetupSize;
+ VOID *SetupBuf;
+ UINTN CommandLineSize;
+ CHAR8 *CommandLine;
+ UINTN InitrdSize;
+ VOID* InitrdData;
+
+ SetupBuf = NULL;
+ SetupSize = 0;
+ KernelBuf = NULL;
+ KernelInitialSize = 0;
+ CommandLine = NULL;
+ CommandLineSize = 0;
+ InitrdData = NULL;
+ InitrdSize = 0;
+
+ if (!QemuFwCfgIsAvailable ()) {
+ return EFI_NOT_FOUND;
+ }
+
+ QemuFwCfgSelectItem (QemuFwCfgItemKernelSize);
+ KernelSize = (UINTN) QemuFwCfgRead64 ();
+
+ QemuFwCfgSelectItem (QemuFwCfgItemKernelSetupSize);
+ SetupSize = (UINTN) QemuFwCfgRead64 ();
+
+ 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, "Setup size: 0x%x\n", (UINT32) SetupSize));
+ 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)) {
+ goto FreeAndReturn;
+ }
+
+ KernelInitialSize = LoadLinuxGetKernelSize (SetupBuf, KernelSize);
+ if (KernelInitialSize == 0) {
+ Status = EFI_UNSUPPORTED;
+ goto FreeAndReturn;
+ }
+
+ KernelBuf = LoadLinuxAllocateKernelPages (
+ SetupBuf,
+ EFI_SIZE_TO_PAGES (KernelInitialSize));
+ if (KernelBuf == NULL) {
+ DEBUG ((EFI_D_ERROR, "Unable to allocate memory for kernel!\n"));
+ Status = EFI_OUT_OF_RESOURCES;
+ goto FreeAndReturn;
+ }
+
+ DEBUG ((EFI_D_INFO, "Kernel size: 0x%x\n", (UINT32) KernelSize));
+ DEBUG ((EFI_D_INFO, "Reading kernel image ..."));
+ QemuFwCfgSelectItem (QemuFwCfgItemKernelData);
+ QemuFwCfgReadBytes (KernelSize, KernelBuf);
+ DEBUG ((EFI_D_INFO, " [done]\n"));
+
+ QemuFwCfgSelectItem (QemuFwCfgItemCommandLineSize);
+ CommandLineSize = (UINTN) QemuFwCfgRead64 ();
+
+ 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)) {
+ goto FreeAndReturn;
+ }
+
+ QemuFwCfgSelectItem (QemuFwCfgItemInitrdSize);
+ InitrdSize = (UINTN) QemuFwCfgRead64 ();
+
+ if (InitrdSize > 0) {
+ InitrdData = LoadLinuxAllocateInitrdPages (
+ SetupBuf,
+ EFI_SIZE_TO_PAGES (InitrdSize)
+ );
+ DEBUG ((EFI_D_INFO, "Initrd size: 0x%x\n", (UINT32) 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)) {
+ goto FreeAndReturn;
+ }
+
+ Status = LoadLinux (KernelBuf, SetupBuf);
+
+FreeAndReturn:
+ if (SetupBuf != NULL) {
+ FreePages (SetupBuf, EFI_SIZE_TO_PAGES (SetupSize));
+ }
+ if (KernelBuf != NULL) {
+ FreePages (KernelBuf, EFI_SIZE_TO_PAGES (KernelInitialSize));
+ }
+ if (CommandLine != NULL) {
+ FreePages (CommandLine, EFI_SIZE_TO_PAGES (CommandLineSize));
+ }
+ if (InitrdData != NULL) {
+ FreePages (InitrdData, EFI_SIZE_TO_PAGES (InitrdSize));
+ }
+
+ return Status;
+}
+
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