+++ /dev/null
-/** @file\r
-*\r
-* Copyright (c) 2011-2014, ARM Limited. All rights reserved.\r
-*\r
-* This program and the accompanying materials\r
-* are licensed and made available under the terms and conditions of the BSD License\r
-* which accompanies this distribution. The full text of the license may be found at\r
-* http://opensource.org/licenses/bsd-license.php\r
-*\r
-* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-*\r
-**/\r
-\r
-#include <Guid/Fdt.h>\r
-#include <libfdt.h>\r
-\r
-#include "BdsInternal.h"\r
-#include "BdsLinuxLoader.h"\r
-\r
-#define ALIGN32_BELOW(addr) ALIGN_POINTER(addr - 32,32)\r
-\r
-#define IS_ADDRESS_IN_REGION(RegionStart, RegionSize, Address) \\r
- (((UINTN)(RegionStart) <= (UINTN)(Address)) && ((UINTN)(Address) <= ((UINTN)(RegionStart) + (UINTN)(RegionSize))))\r
-\r
-STATIC\r
-EFI_STATUS\r
-PreparePlatformHardware (\r
- VOID\r
- )\r
-{\r
- //Note: Interrupts will be disabled by the GIC driver when ExitBootServices() will be called.\r
-\r
- // Clean before Disable else the Stack gets corrupted with old data.\r
- ArmCleanDataCache ();\r
- ArmDisableDataCache ();\r
- // Invalidate all the entries that might have snuck in.\r
- ArmInvalidateDataCache ();\r
-\r
- // Invalidate and disable the Instruction cache\r
- ArmDisableInstructionCache ();\r
- ArmInvalidateInstructionCache ();\r
-\r
- // Turn off MMU\r
- ArmDisableMmu();\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-STATIC\r
-EFI_STATUS\r
-StartLinux (\r
- IN EFI_PHYSICAL_ADDRESS LinuxImage,\r
- IN UINTN LinuxImageSize,\r
- IN EFI_PHYSICAL_ADDRESS KernelParamsAddress,\r
- IN UINTN KernelParamsSize,\r
- IN UINT32 MachineType\r
- )\r
-{\r
- EFI_STATUS Status;\r
- LINUX_KERNEL LinuxKernel;\r
-\r
- // Shut down UEFI boot services. ExitBootServices() will notify every driver that created an event on\r
- // ExitBootServices event. Example the Interrupt DXE driver will disable the interrupts on this event.\r
- Status = ShutdownUefiBootServices ();\r
- if(EFI_ERROR(Status)) {\r
- DEBUG((EFI_D_ERROR,"ERROR: Can not shutdown UEFI boot services. Status=0x%X\n", Status));\r
- goto Exit;\r
- }\r
-\r
- // Move the kernel parameters to any address inside the first 1MB.\r
- // This is necessary because the ARM Linux kernel requires\r
- // the FTD / ATAG List to reside entirely inside the first 1MB of\r
- // physical memory.\r
- //Note: There is no requirement on the alignment\r
- if (MachineType != ARM_FDT_MACHINE_TYPE) {\r
- if (((UINTN)KernelParamsAddress > LINUX_ATAG_MAX_OFFSET) && (KernelParamsSize < PcdGet32(PcdArmLinuxAtagMaxOffset))) {\r
- KernelParamsAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)CopyMem (ALIGN32_BELOW(LINUX_ATAG_MAX_OFFSET - KernelParamsSize), (VOID*)(UINTN)KernelParamsAddress, KernelParamsSize);\r
- }\r
- } else {\r
- if (((UINTN)KernelParamsAddress > LINUX_FDT_MAX_OFFSET) && (KernelParamsSize < PcdGet32(PcdArmLinuxFdtMaxOffset))) {\r
- KernelParamsAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)CopyMem (ALIGN32_BELOW(LINUX_FDT_MAX_OFFSET - KernelParamsSize), (VOID*)(UINTN)KernelParamsAddress, KernelParamsSize);\r
- }\r
- }\r
-\r
- if ((UINTN)LinuxImage > LINUX_KERNEL_MAX_OFFSET) {\r
- //Note: There is no requirement on the alignment\r
- LinuxKernel = (LINUX_KERNEL)CopyMem (ALIGN32_BELOW(LINUX_KERNEL_MAX_OFFSET - LinuxImageSize), (VOID*)(UINTN)LinuxImage, LinuxImageSize);\r
- } else {\r
- LinuxKernel = (LINUX_KERNEL)(UINTN)LinuxImage;\r
- }\r
-\r
- // Check if the Linux Image is a uImage\r
- if (*(UINT32*)LinuxKernel == LINUX_UIMAGE_SIGNATURE) {\r
- // Assume the Image Entry Point is just after the uImage header (64-byte size)\r
- LinuxKernel = (LINUX_KERNEL)((UINTN)LinuxKernel + 64);\r
- LinuxImageSize -= 64;\r
- }\r
-\r
- // Check there is no overlapping between kernel and its parameters\r
- // We can only assert because it is too late to fallback to UEFI (ExitBootServices has been called).\r
- ASSERT (!IS_ADDRESS_IN_REGION(LinuxKernel, LinuxImageSize, KernelParamsAddress) &&\r
- !IS_ADDRESS_IN_REGION(LinuxKernel, LinuxImageSize, KernelParamsAddress + KernelParamsSize));\r
-\r
- //\r
- // Switch off interrupts, caches, mmu, etc\r
- //\r
- Status = PreparePlatformHardware ();\r
- ASSERT_EFI_ERROR(Status);\r
-\r
- // Register and print out performance information\r
- PERF_END (NULL, "BDS", NULL, 0);\r
- if (PerformanceMeasurementEnabled ()) {\r
- PrintPerformance ();\r
- }\r
-\r
- //\r
- // Start the Linux Kernel\r
- //\r
-\r
- // Outside BootServices, so can't use Print();\r
- DEBUG((EFI_D_ERROR, "\nStarting the kernel:\n\n"));\r
-\r
- // Jump to kernel with register set\r
- LinuxKernel ((UINTN)0, MachineType, (UINTN)KernelParamsAddress);\r
-\r
- // Kernel should never exit\r
- // After Life services are not provided\r
- ASSERT(FALSE);\r
-\r
-Exit:\r
- // Only be here if we fail to start Linux\r
- Print (L"ERROR : Can not start the kernel. Status=0x%X\n", Status);\r
-\r
- // Free Runtimee Memory (kernel and FDT)\r
- return Status;\r
-}\r
-\r
-/**\r
- Start a Linux kernel from a Device Path\r
-\r
- @param LinuxKernel Device Path to the Linux Kernel\r
- @param Parameters Linux kernel arguments\r
- @param Fdt Device Path to the Flat Device Tree\r
-\r
- @retval EFI_SUCCESS All drivers have been connected\r
- @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.\r
-\r
-**/\r
-EFI_STATUS\r
-BdsBootLinuxAtag (\r
- IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath,\r
- IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath,\r
- IN CONST CHAR8* CommandLineArguments\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINT32 LinuxImageSize;\r
- UINT32 InitrdImageBaseSize = 0;\r
- UINT32 InitrdImageSize = 0;\r
- UINT32 AtagSize;\r
- EFI_PHYSICAL_ADDRESS AtagBase;\r
- EFI_PHYSICAL_ADDRESS LinuxImage;\r
- EFI_PHYSICAL_ADDRESS InitrdImageBase = 0;\r
- EFI_PHYSICAL_ADDRESS InitrdImage = 0;\r
-\r
- PERF_START (NULL, "BDS", NULL, 0);\r
-\r
- // Load the Linux kernel from a device path\r
- LinuxImage = LINUX_KERNEL_MAX_OFFSET;\r
- Status = BdsLoadImage (LinuxKernelDevicePath, AllocateMaxAddress, &LinuxImage, &LinuxImageSize);\r
- if (EFI_ERROR(Status)) {\r
- Print (L"ERROR: Did not find Linux kernel.\n");\r
- return Status;\r
- }\r
-\r
- if (InitrdDevicePath) {\r
- // Load the initrd near to the Linux kernel\r
- InitrdImageBase = LINUX_KERNEL_MAX_OFFSET;\r
- Status = BdsLoadImage (InitrdDevicePath, AllocateMaxAddress, &InitrdImageBase, &InitrdImageBaseSize);\r
- if (Status == EFI_OUT_OF_RESOURCES) {\r
- Status = BdsLoadImage (InitrdDevicePath, AllocateAnyPages, &InitrdImageBase, &InitrdImageBaseSize);\r
- }\r
- if (EFI_ERROR(Status)) {\r
- Print (L"ERROR: Did not find initrd image.\n");\r
- goto EXIT_FREE_LINUX;\r
- }\r
-\r
- // Check if the initrd is a uInitrd\r
- if (*(UINT32*)((UINTN)InitrdImageBase) == LINUX_UIMAGE_SIGNATURE) {\r
- // Skip the 64-byte image header\r
- InitrdImage = (EFI_PHYSICAL_ADDRESS)((UINTN)InitrdImageBase + 64);\r
- InitrdImageSize = InitrdImageBaseSize - 64;\r
- } else {\r
- InitrdImage = InitrdImageBase;\r
- InitrdImageSize = InitrdImageBaseSize;\r
- }\r
- }\r
-\r
- //\r
- // Setup the Linux Kernel Parameters\r
- //\r
-\r
- // By setting address=0 we leave the memory allocation to the function\r
- Status = PrepareAtagList (CommandLineArguments, InitrdImage, InitrdImageSize, &AtagBase, &AtagSize);\r
- if (EFI_ERROR(Status)) {\r
- Print(L"ERROR: Can not prepare ATAG list. Status=0x%X\n", Status);\r
- goto EXIT_FREE_INITRD;\r
- }\r
-\r
- return StartLinux (LinuxImage, LinuxImageSize, AtagBase, AtagSize, PcdGet32(PcdArmMachineType));\r
-\r
-EXIT_FREE_INITRD:\r
- if (InitrdDevicePath) {\r
- gBS->FreePages (InitrdImageBase, EFI_SIZE_TO_PAGES (InitrdImageBaseSize));\r
- }\r
-\r
-EXIT_FREE_LINUX:\r
- gBS->FreePages (LinuxImage, EFI_SIZE_TO_PAGES (LinuxImageSize));\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Start a Linux kernel from a Device Path\r
-\r
- @param LinuxKernelDevicePath Device Path to the Linux Kernel\r
- @param InitrdDevicePath Device Path to the Initrd\r
- @param CommandLineArguments Linux command line\r
-\r
- @retval EFI_SUCCESS All drivers have been connected\r
- @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.\r
-\r
-**/\r
-EFI_STATUS\r
-BdsBootLinuxFdt (\r
- IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath,\r
- IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath,\r
- IN CONST CHAR8* CommandLineArguments\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINT32 LinuxImageSize;\r
- UINT32 InitrdImageBaseSize = 0;\r
- UINT32 InitrdImageSize = 0;\r
- VOID *InstalledFdtBase;\r
- UINT32 FdtBlobSize;\r
- EFI_PHYSICAL_ADDRESS FdtBlobBase;\r
- EFI_PHYSICAL_ADDRESS LinuxImage;\r
- EFI_PHYSICAL_ADDRESS InitrdImageBase = 0;\r
- EFI_PHYSICAL_ADDRESS InitrdImage = 0;\r
-\r
- PERF_START (NULL, "BDS", NULL, 0);\r
-\r
- // Load the Linux kernel from a device path\r
- LinuxImage = LINUX_KERNEL_MAX_OFFSET;\r
- Status = BdsLoadImage (LinuxKernelDevicePath, AllocateMaxAddress, &LinuxImage, &LinuxImageSize);\r
- if (EFI_ERROR(Status)) {\r
- Print (L"ERROR: Did not find Linux kernel.\n");\r
- return Status;\r
- }\r
-\r
- if (InitrdDevicePath) {\r
- InitrdImageBase = LINUX_KERNEL_MAX_OFFSET;\r
- Status = BdsLoadImage (InitrdDevicePath, AllocateMaxAddress, &InitrdImageBase, &InitrdImageBaseSize);\r
- if (Status == EFI_OUT_OF_RESOURCES) {\r
- Status = BdsLoadImage (InitrdDevicePath, AllocateAnyPages, &InitrdImageBase, &InitrdImageBaseSize);\r
- }\r
- if (EFI_ERROR(Status)) {\r
- Print (L"ERROR: Did not find initrd image.\n");\r
- goto EXIT_FREE_LINUX;\r
- }\r
-\r
- // Check if the initrd is a uInitrd\r
- if (*(UINT32*)((UINTN)InitrdImageBase) == LINUX_UIMAGE_SIGNATURE) {\r
- // Skip the 64-byte image header\r
- InitrdImage = (EFI_PHYSICAL_ADDRESS)((UINTN)InitrdImageBase + 64);\r
- InitrdImageSize = InitrdImageBaseSize - 64;\r
- } else {\r
- InitrdImage = InitrdImageBase;\r
- InitrdImageSize = InitrdImageBaseSize;\r
- }\r
- }\r
-\r
- //\r
- // Get the FDT from the Configuration Table.\r
- // The FDT will be reloaded in PrepareFdt() to a more appropriate\r
- // location for the Linux Kernel.\r
- //\r
- Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &InstalledFdtBase);\r
- if (EFI_ERROR (Status)) {\r
- Print (L"ERROR: Did not get the Device Tree blob (%r).\n", Status);\r
- goto EXIT_FREE_INITRD;\r
- }\r
- FdtBlobBase = (EFI_PHYSICAL_ADDRESS)(UINTN)InstalledFdtBase;\r
- FdtBlobSize = fdt_totalsize (InstalledFdtBase);\r
-\r
- // Update the Fdt with the Initrd information. The FDT will increase in size.\r
- // By setting address=0 we leave the memory allocation to the function\r
- Status = PrepareFdt (CommandLineArguments, InitrdImage, InitrdImageSize, &FdtBlobBase, &FdtBlobSize);\r
- if (EFI_ERROR(Status)) {\r
- Print(L"ERROR: Can not load kernel with FDT. Status=%r\n", Status);\r
- goto EXIT_FREE_FDT;\r
- }\r
-\r
- return StartLinux (LinuxImage, LinuxImageSize, FdtBlobBase, FdtBlobSize, ARM_FDT_MACHINE_TYPE);\r
-\r
-EXIT_FREE_FDT:\r
- gBS->FreePages (FdtBlobBase, EFI_SIZE_TO_PAGES (FdtBlobSize));\r
-\r
-EXIT_FREE_INITRD:\r
- if (InitrdDevicePath) {\r
- gBS->FreePages (InitrdImageBase, EFI_SIZE_TO_PAGES (InitrdImageBaseSize));\r
- }\r
-\r
-EXIT_FREE_LINUX:\r
- gBS->FreePages (LinuxImage, EFI_SIZE_TO_PAGES (LinuxImageSize));\r
-\r
- return Status;\r
-}\r
-\r
projects / mirror_edk2.git / blobdiff