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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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29
ArmPkg/Library/BdsLib/BdsLinuxLoader.c
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@@ -110,6 +110,8 @@ STATIC
EFI_STATUS
PrepareAtagList (
IN CONST CHAR8* CommandLineString,
IN EFI_PHYSICAL_ADDRESS InitrdImage,
IN UINTN InitrdImageSize,
OUT LINUX_ATAG **AtagBase,
OUT UINT32 *AtagSize
)
@@ -147,6 +149,17 @@ PrepareAtagList (
// CommandLine setting root device
SetupCmdlineTag (CommandLineString);
if (InitrdImageSize > 0 && InitrdImage != 0) {
mLinuxKernelCurrentAtag->header.size = tag_size(LINUX_ATAG_INITRD2);
mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;
mLinuxKernelCurrentAtag->body.initrd2_tag.start = (UINT32)InitrdImage;
mLinuxKernelCurrentAtag->body.initrd2_tag.size = (UINT32)InitrdImageSize;
// Move pointer to next tag
mLinuxKernelCurrentAtag = next_tag_address(mLinuxKernelCurrentAtag);
}
// end of tags
SetupEndTag();
@@ -194,18 +207,21 @@ PreparePlatformHardware (
EFI_STATUS
BdsBootLinux (
IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath,
IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath,
IN CONST CHAR8* Arguments,
IN EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath
)
{
EFI_STATUS Status;
UINT32 LinuxImageSize;
UINT32 InitrdImageSize;
UINT32 KernelParamsSize;
EFI_PHYSICAL_ADDRESS KernelParamsAddress;
UINT32 MachineType;
BOOLEAN FdtSupported = FALSE;
LINUX_KERNEL LinuxKernel;
EFI_PHYSICAL_ADDRESS LinuxImage;;
EFI_PHYSICAL_ADDRESS LinuxImage;
EFI_PHYSICAL_ADDRESS InitrdImage;
PERF_START (NULL, "BDS", NULL, 0);
@@ -219,6 +235,15 @@ BdsBootLinux (
}
LinuxKernel = (LINUX_KERNEL)(UINTN)LinuxImage;
if (InitrdDevicePath) {
InitrdImageSize = 0;
Status = BdsLoadImage (InitrdDevicePath, AllocateAnyPages, &InitrdImage, &InitrdImageSize);
if (EFI_ERROR(Status)) {
Print (L"ERROR: Did not find initrd image.\n");
return Status;
}
}
if (FdtDevicePath) {
// Load the FDT binary from a device path
KernelParamsAddress = LINUX_ATAG_MAX_OFFSET;
@@ -240,7 +265,7 @@ BdsBootLinux (
MachineType = PcdGet32(PcdArmMachineType);
// By setting address=0 we leave the memory allocation to the function
Status = PrepareAtagList (Arguments, (LINUX_ATAG**)&KernelParamsAddress, &KernelParamsSize);
Status = PrepareAtagList (Arguments, InitrdImage, InitrdImageSize, (LINUX_ATAG**)&KernelParamsAddress, &KernelParamsSize);
if(EFI_ERROR(Status)) {
Print(L"ERROR: Can not prepare ATAG list. Status=0x%X\n", Status);
goto Exit;