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ArmPlatformPkg/Bds: Add Linux 'initrd' support to BDS

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An 'initrd' file can be specified for a Linux kernel.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12169 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-08-18 13:21:14 +00:00
parent 326d1df919
commit 656416bc2e
11 changed files with 286 additions and 96 deletions
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66
ArmPlatformPkg/Bds/BootOption.c
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@@ -35,14 +35,21 @@ BootOptionStart (
Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList);
} else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {
Status = BdsBootLinux (BootOption->FilePathList, BootOption->OptionalData->Arguments, NULL);
Status = BdsBootLinux (BootOption->FilePathList,
(EFI_DEVICE_PATH_PROTOCOL*)ReadUnaligned32((UINT32*)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList)),
BootOption->OptionalData->Arguments.LinuxAtagArguments.CmdLine,
NULL);
} else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {
// Convert the FDT path into a Device Path
Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
ASSERT_EFI_ERROR(Status);
FdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));
Status = BdsBootLinux (BootOption->FilePathList, BootOption->OptionalData->Arguments, FdtDevicePath);
Status = BdsBootLinux (BootOption->FilePathList,
NULL,
NULL,
FdtDevicePath);
FreePool(FdtDevicePath);
}
@@ -184,8 +191,8 @@ BootOptionSetFields (
IN UINT32 Attributes,
IN CHAR16* BootDescription,
IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,
IN BDS_LOADER_TYPE BootType,
IN CHAR8* BootArguments
IN BDS_LOADER_TYPE BootType,
IN BDS_LOADER_ARGUMENTS* BootArguments
)
{
EFI_LOAD_OPTION EfiLoadOption;
@@ -193,9 +200,12 @@ BootOptionSetFields (
UINTN BootDescriptionSize;
UINTN BootOptionalDataSize;
UINT16 FilePathListLength;
UINT16 InitrdPathListLength;
EFI_DEVICE_PATH_PROTOCOL* DevicePathNode;
EFI_DEVICE_PATH_PROTOCOL* InitrdPathNode;
UINTN NodeLength;
UINT8* EfiLoadOptionPtr;
UINT8 *InitrdPathListPtr;
// If we are overwriting an existent Boot Option then we have to free previously allocated memory
if (BootOption->LoadOption) {
@@ -203,8 +213,9 @@ BootOptionSetFields (
}
BootDescriptionSize = StrSize(BootDescription);
BootOptionalDataSize = sizeof(BDS_LOADER_OPTIONAL_DATA) +
(BootArguments == NULL ? 0 : AsciiStrSize(BootArguments));
BootOptionalDataSize = sizeof(BDS_LOADER_TYPE) + (BootType == BDS_LOADER_KERNEL_LINUX_ATAG ?
(sizeof(UINT16) + sizeof(EFI_DEVICE_PATH_PROTOCOL*) + BOOT_DEVICE_OPTION_MAX + 1)
: 0);
// Compute the size of the FilePath list
FilePathListLength = 0;
@@ -216,6 +227,18 @@ BootOptionSetFields (
// Add the length of the DevicePath EndType
FilePathListLength += DevicePathNodeLength (DevicePathNode);
InitrdPathListLength = 0;
if (BootType == BDS_LOADER_KERNEL_LINUX_ATAG && BootArguments->LinuxAtagArguments.InitrdPathList != NULL) {
// Compute the size of the InitrdPath list
InitrdPathNode = BootArguments->LinuxAtagArguments.InitrdPathList;
while (!IsDevicePathEndType (InitrdPathNode)) {
InitrdPathListLength += DevicePathNodeLength (InitrdPathNode);
InitrdPathNode = NextDevicePathNode (InitrdPathNode);
}
// Add the length of the DevicePath EndType
InitrdPathListLength += DevicePathNodeLength (InitrdPathNode);
}
// Allocate the memory for the EFI Load Option
EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + BootOptionalDataSize;
EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);
@@ -257,9 +280,34 @@ BootOptionSetFields (
// Optional Data fields, Do unaligned writes
WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, BootType);
CopyMem (&((BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments, BootArguments, AsciiStrSize(BootArguments));
BootOption->OptionalData = (BDS_LOADER_OPTIONAL_DATA *)EfiLoadOptionPtr;
if (BootType == BDS_LOADER_KERNEL_LINUX_ATAG) {
CopyMem (&((BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxAtagArguments.CmdLine,
BootArguments->LinuxAtagArguments.CmdLine,
AsciiStrSize(BootArguments->LinuxAtagArguments.CmdLine));
WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathListLength), InitrdPathListLength);
if ((EFI_DEVICE_PATH_PROTOCOL*)ReadUnaligned32((UINT32 *)&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList) != NULL
&& BootArguments->LinuxAtagArguments.InitrdPathList != NULL) {
InitrdPathListPtr = AllocatePool(InitrdPathListLength);
WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList), (UINT32)InitrdPathListPtr);
InitrdPathNode = BootArguments->LinuxAtagArguments.InitrdPathList;
while (!IsDevicePathEndType (InitrdPathNode)) {
NodeLength = DevicePathNodeLength(InitrdPathNode);
CopyMem (InitrdPathListPtr, InitrdPathNode, NodeLength);
InitrdPathListPtr += NodeLength;
InitrdPathNode = NextDevicePathNode (InitrdPathNode);
}
// Set the End Device Path Type
SetDevicePathEndNode (InitrdPathListPtr);
} else {
WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList), (UINT32)NULL);
}
}
// If this function is called at the creation of the Boot Device entry (not at the update) the
// BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry
if (BootOption->LoadOptionSize == 0) {
@@ -279,7 +327,7 @@ BootOptionCreate (
IN CHAR16* BootDescription,
IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,
IN BDS_LOADER_TYPE BootType,
IN CHAR8* BootArguments,
IN BDS_LOADER_ARGUMENTS* BootArguments,
OUT BDS_LOAD_OPTION **BdsLoadOption
)
{
@@ -344,7 +392,7 @@ BootOptionUpdate (
IN CHAR16* BootDescription,
IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,
IN BDS_LOADER_TYPE BootType,
IN CHAR8* BootArguments
IN BDS_LOADER_ARGUMENTS* BootArguments
)
{
EFI_STATUS Status;