diff options
author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-09-28 09:58:42 +0000 |
---|---|---|
committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-09-28 09:58:42 +0000 |
commit | 0a6653bc2aecaa621eb42c7137b6f13815a34a92 (patch) | |
tree | 20b450e1bfbdb014095d74786871e23c6e3a5d4b /ArmPkg/Library/BdsLib/BdsLinuxLoader.c | |
parent | 619b3998880e3c28c46d3a20bbbfa879e08b3579 (diff) | |
download | edk2-platforms-0a6653bc2aecaa621eb42c7137b6f13815a34a92.tar.xz |
ArmPkg/BdsLib: Added FDT support for BdsLib
Signed-off-by: Olivier Martin <olivier.martin@arm.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13768 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/BdsLib/BdsLinuxLoader.c')
-rw-r--r-- | ArmPkg/Library/BdsLib/BdsLinuxLoader.c | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/ArmPkg/Library/BdsLib/BdsLinuxLoader.c b/ArmPkg/Library/BdsLib/BdsLinuxLoader.c index a3ba58023a..901781f2f8 100644 --- a/ArmPkg/Library/BdsLib/BdsLinuxLoader.c +++ b/ArmPkg/Library/BdsLib/BdsLinuxLoader.c @@ -64,9 +64,15 @@ StartLinux ( // This is necessary because the ARM Linux kernel requires // the FTD / ATAG List to reside entirely inside the first 1MB of // physical memory. - if ((UINTN)KernelParamsAddress > LINUX_ATAG_MAX_OFFSET) { - //Note: There is no requirement on the alignment - KernelParamsAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)CopyMem (ALIGN32_BELOW(LINUX_ATAG_MAX_OFFSET - KernelParamsSize), (VOID*)(UINTN)KernelParamsAddress, KernelParamsSize); + //Note: There is no requirement on the alignment + if (MachineType != ARM_FDT_MACHINE_TYPE) { + if (((UINTN)KernelParamsAddress > LINUX_ATAG_MAX_OFFSET) && (KernelParamsSize < PcdGet32(PcdArmLinuxAtagMaxOffset))) { + KernelParamsAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)CopyMem (ALIGN32_BELOW(LINUX_ATAG_MAX_OFFSET - KernelParamsSize), (VOID*)(UINTN)KernelParamsAddress, KernelParamsSize); + } + } else { + if (((UINTN)KernelParamsAddress > LINUX_FDT_MAX_OFFSET) && (KernelParamsSize < PcdGet32(PcdArmLinuxFdtMaxOffset))) { + KernelParamsAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)CopyMem (ALIGN32_BELOW(LINUX_FDT_MAX_OFFSET - KernelParamsSize), (VOID*)(UINTN)KernelParamsAddress, KernelParamsSize); + } } if ((UINTN)LinuxImage > LINUX_KERNEL_MAX_OFFSET) { @@ -135,14 +141,14 @@ EFI_STATUS BdsBootLinuxAtag ( IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath, IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath, - IN CONST CHAR8* Arguments + IN CONST CHAR8* CommandLineArguments ) { EFI_STATUS Status; UINT32 LinuxImageSize; UINT32 InitrdImageSize = 0; - UINT32 KernelParamsSize; - EFI_PHYSICAL_ADDRESS KernelParamsAddress; + UINT32 AtagSize; + EFI_PHYSICAL_ADDRESS AtagBase; EFI_PHYSICAL_ADDRESS LinuxImage; EFI_PHYSICAL_ADDRESS InitrdImage; @@ -181,13 +187,13 @@ BdsBootLinuxAtag ( // // By setting address=0 we leave the memory allocation to the function - Status = PrepareAtagList (Arguments, InitrdImage, InitrdImageSize, &KernelParamsAddress, &KernelParamsSize); + Status = PrepareAtagList (CommandLineArguments, InitrdImage, InitrdImageSize, &AtagBase, &AtagSize); if (EFI_ERROR(Status)) { Print(L"ERROR: Can not prepare ATAG list. Status=0x%X\n", Status); return Status; } - return StartLinux (LinuxImage, LinuxImageSize, KernelParamsAddress, KernelParamsSize, PcdGet32(PcdArmMachineType)); + return StartLinux (LinuxImage, LinuxImageSize, AtagBase, AtagSize, PcdGet32(PcdArmMachineType)); } /** @@ -206,21 +212,18 @@ EFI_STATUS BdsBootLinuxFdt ( IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath, IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath, - IN CONST CHAR8* Arguments, + IN CONST CHAR8* CommandLineArguments, IN EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath ) { EFI_STATUS Status; UINT32 LinuxImageSize; UINT32 InitrdImageSize = 0; - UINT32 KernelParamsSize; - EFI_PHYSICAL_ADDRESS KernelParamsAddress; - UINT32 FdtMachineType; + UINT32 FdtBlobSize; + EFI_PHYSICAL_ADDRESS FdtBlobBase; EFI_PHYSICAL_ADDRESS LinuxImage; EFI_PHYSICAL_ADDRESS InitrdImage; - FdtMachineType = 0xFFFFFFFF; - PERF_START (NULL, "BDS", NULL, 0); // Load the Linux kernel from a device path @@ -250,13 +253,22 @@ BdsBootLinuxFdt ( } } - // Load the FDT binary from a device path - KernelParamsAddress = LINUX_ATAG_MAX_OFFSET; - Status = BdsLoadImage (FdtDevicePath, AllocateMaxAddress, &KernelParamsAddress, &KernelParamsSize); + // Load the FDT binary from a device path. The FDT will be reloaded later to a more appropriate location for the Linux kernel. + FdtBlobBase = 0; + Status = BdsLoadImage (FdtDevicePath, AllocateAnyPages, &FdtBlobBase, &FdtBlobSize); if (EFI_ERROR(Status)) { Print (L"ERROR: Did not find Device Tree blob.\n"); return Status; } - return StartLinux (LinuxImage, LinuxImageSize, KernelParamsAddress, KernelParamsSize, FdtMachineType); + + // Update the Fdt with the Initrd information. The FDT will increase in size. + // By setting address=0 we leave the memory allocation to the function + Status = PrepareFdt (CommandLineArguments, InitrdImage, InitrdImageSize, &FdtBlobBase, &FdtBlobSize); + if (EFI_ERROR(Status)) { + Print(L"ERROR: Can not load kernel with FDT. Status=%r\n", Status); + return Status; + } + + return StartLinux (LinuxImage, LinuxImageSize, FdtBlobBase, FdtBlobSize, ARM_FDT_MACHINE_TYPE); } |