diff options
Diffstat (limited to 'ArmPkg/Application/LinuxLoader/Arm')
| -rw-r--r-- | ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.c | 177 | ||||
| -rw-r--r-- | ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.h | 124 | ||||
| -rw-r--r-- | ArmPkg/Application/LinuxLoader/Arm/LinuxStarter.c | 346 |
3 files changed, 0 insertions, 647 deletions
diff --git a/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.c b/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.c deleted file mode 100644 index 0b3e2489c7..0000000000 --- a/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.c +++ /dev/null @@ -1,177 +0,0 @@ -/** @file
-*
-* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
-*
-* 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 "LinuxAtag.h"
-#include "LinuxLoader.h"
-
-// Point to the current ATAG
-STATIC LINUX_ATAG *mLinuxKernelCurrentAtag;
-
-STATIC
-VOID
-SetupCoreTag (
- IN UINT32 PageSize
- )
-{
- mLinuxKernelCurrentAtag->header.size = tag_size (LINUX_ATAG_CORE);
- mLinuxKernelCurrentAtag->header.type = ATAG_CORE;
-
- mLinuxKernelCurrentAtag->body.core_tag.flags = 1; /* ensure read-only */
- mLinuxKernelCurrentAtag->body.core_tag.pagesize = PageSize; /* systems PageSize (4k) */
- mLinuxKernelCurrentAtag->body.core_tag.rootdev = 0; /* zero root device (typically overridden from kernel command line )*/
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address (mLinuxKernelCurrentAtag);
-}
-
-STATIC
-VOID
-SetupMemTag (
- IN UINTN StartAddress,
- IN UINT32 Size
- )
-{
- mLinuxKernelCurrentAtag->header.size = tag_size (LINUX_ATAG_MEM);
- mLinuxKernelCurrentAtag->header.type = ATAG_MEM;
-
- mLinuxKernelCurrentAtag->body.mem_tag.start = StartAddress; /* Start of memory chunk for AtagMem */
- mLinuxKernelCurrentAtag->body.mem_tag.size = Size; /* Size of memory chunk for AtagMem */
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address (mLinuxKernelCurrentAtag);
-}
-
-STATIC
-VOID
-SetupCmdlineTag (
- IN CONST CHAR8 *CmdLine
- )
-{
- UINT32 LineLength;
-
- // Increment the line length by 1 to account for the null string terminator character
- LineLength = AsciiStrLen (CmdLine) + 1;
-
- /* Check for NULL strings.
- * Do not insert a tag for an empty CommandLine, don't even modify the tag address pointer.
- * Remember, you have at least one null string terminator character.
- */
- if (LineLength > 1) {
- mLinuxKernelCurrentAtag->header.size = ((UINT32)sizeof (LINUX_ATAG_HEADER) + LineLength + (UINT32)3) >> 2;
- mLinuxKernelCurrentAtag->header.type = ATAG_CMDLINE;
-
- /* place CommandLine into tag */
- AsciiStrCpyS (mLinuxKernelCurrentAtag->body.cmdline_tag.cmdline, LineLength, CmdLine);
-
- // move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address (mLinuxKernelCurrentAtag);
- }
-}
-
-STATIC
-VOID
-SetupInitrdTag (
- IN UINT32 InitrdImage,
- IN UINT32 InitrdImageSize
- )
-{
- mLinuxKernelCurrentAtag->header.size = tag_size (LINUX_ATAG_INITRD2);
- mLinuxKernelCurrentAtag->header.type = ATAG_INITRD2;
-
- mLinuxKernelCurrentAtag->body.initrd2_tag.start = InitrdImage;
- mLinuxKernelCurrentAtag->body.initrd2_tag.size = InitrdImageSize;
-
- // Move pointer to next tag
- mLinuxKernelCurrentAtag = next_tag_address (mLinuxKernelCurrentAtag);
-}
-STATIC
-VOID
-SetupEndTag (
- VOID
- )
-{
- // Empty tag ends list; this has zero length and no body
- mLinuxKernelCurrentAtag->header.type = ATAG_NONE;
- mLinuxKernelCurrentAtag->header.size = 0;
-
- /* We can not calculate the next address by using the standard macro:
- * Params = next_tag_address (Params);
- * because it relies on the header.size, which here it is 0 (zero).
- * The easiest way is to add the sizeof (mLinuxKernelCurrentAtag->header).
- */
- mLinuxKernelCurrentAtag = (LINUX_ATAG*)((UINT32)mLinuxKernelCurrentAtag + sizeof (mLinuxKernelCurrentAtag->header));
-}
-
-EFI_STATUS
-PrepareAtagList (
- IN EFI_PHYSICAL_ADDRESS SystemMemoryBase,
- IN CONST CHAR8* CommandLineString,
- IN EFI_PHYSICAL_ADDRESS InitrdImage,
- IN UINTN InitrdImageSize,
- OUT EFI_PHYSICAL_ADDRESS *AtagBase,
- OUT UINT32 *AtagSize
- )
-{
- EFI_STATUS Status;
- LIST_ENTRY *ResourceLink;
- LIST_ENTRY ResourceList;
- EFI_PHYSICAL_ADDRESS AtagStartAddress;
- SYSTEM_MEMORY_RESOURCE *Resource;
-
- AtagStartAddress = LINUX_ATAG_MAX_OFFSET;
- Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData, EFI_SIZE_TO_PAGES (ATAG_MAX_SIZE), &AtagStartAddress);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_WARN, "Warning: Failed to allocate Atag at 0x%lX (%r). The Atag will be allocated somewhere else in System Memory.\n", AtagStartAddress, Status));
- Status = gBS->AllocatePages (AllocateAnyPages, EfiBootServicesData, EFI_SIZE_TO_PAGES (ATAG_MAX_SIZE), &AtagStartAddress);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- // Ready to setup the atag list
- mLinuxKernelCurrentAtag = (LINUX_ATAG*)(UINTN)AtagStartAddress;
-
- // Standard core tag 4k PageSize
- SetupCoreTag ( (UINT32)SIZE_4KB );
-
- // Physical memory setup
- GetSystemMemoryResources (&ResourceList);
- ResourceLink = ResourceList.ForwardLink;
- while (ResourceLink != NULL && ResourceLink != &ResourceList) {
- Resource = (SYSTEM_MEMORY_RESOURCE*)ResourceLink;
- DEBUG ((EFI_D_INFO, "- [0x%08X,0x%08X]\n",
- (UINT32)Resource->PhysicalStart,
- (UINT32)Resource->PhysicalStart + (UINT32)Resource->ResourceLength));
- SetupMemTag ((UINT32)Resource->PhysicalStart, (UINT32)Resource->ResourceLength );
- ResourceLink = ResourceLink->ForwardLink;
- }
-
- // CommandLine setting root device
- if (CommandLineString) {
- SetupCmdlineTag (CommandLineString);
- }
-
- if (InitrdImageSize > 0 && InitrdImage != 0) {
- SetupInitrdTag ((UINT32)InitrdImage, (UINT32)InitrdImageSize);
- }
-
- // End of tags
- SetupEndTag ();
-
- // Calculate atag list size
- *AtagBase = AtagStartAddress;
- *AtagSize = (UINT32)mLinuxKernelCurrentAtag - (UINT32)AtagStartAddress + 1;
-
- return EFI_SUCCESS;
-}
diff --git a/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.h b/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.h deleted file mode 100644 index b4c7e5986e..0000000000 --- a/ArmPkg/Application/LinuxLoader/Arm/LinuxAtag.h +++ /dev/null @@ -1,124 +0,0 @@ -/** @file
-*
-* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
-*
-* 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.
-*
-**/
-
-#ifndef __LINUX_ATAG_H__
-#define __LINUX_ATAG_H__
-
-//
-// ATAG Definitions
-//
-
-#define ATAG_MAX_SIZE 0x3000
-
-/* ATAG : list of possible tags */
-#define ATAG_NONE 0x00000000
-#define ATAG_CORE 0x54410001
-#define ATAG_MEM 0x54410002
-#define ATAG_VIDEOTEXT 0x54410003
-#define ATAG_RAMDISK 0x54410004
-#define ATAG_INITRD2 0x54420005
-#define ATAG_SERIAL 0x54410006
-#define ATAG_REVISION 0x54410007
-#define ATAG_VIDEOLFB 0x54410008
-#define ATAG_CMDLINE 0x54410009
-#define ATAG_ARM_MP_CORE 0x5441000A
-
-#define next_tag_address(t) ((LINUX_ATAG*)((UINT32)(t) + (((t)->header.size) << 2) ))
-#define tag_size(type) ((UINT32)((sizeof(LINUX_ATAG_HEADER) + sizeof(type)) >> 2))
-
-typedef struct {
- UINT32 size; /* length of tag in words including this header */
- UINT32 type; /* tag type */
-} LINUX_ATAG_HEADER;
-
-typedef struct {
- UINT32 flags;
- UINT32 pagesize;
- UINT32 rootdev;
-} LINUX_ATAG_CORE;
-
-typedef struct {
- UINT32 size;
- UINTN start;
-} LINUX_ATAG_MEM;
-
-typedef struct {
- UINT8 x;
- UINT8 y;
- UINT16 video_page;
- UINT8 video_mode;
- UINT8 video_cols;
- UINT16 video_ega_bx;
- UINT8 video_lines;
- UINT8 video_isvga;
- UINT16 video_points;
-} LINUX_ATAG_VIDEOTEXT;
-
-typedef struct {
- UINT32 flags;
- UINT32 size;
- UINTN start;
-} LINUX_ATAG_RAMDISK;
-
-typedef struct {
- UINT32 start;
- UINT32 size;
-} LINUX_ATAG_INITRD2;
-
-typedef struct {
- UINT32 low;
- UINT32 high;
-} LINUX_ATAG_SERIALNR;
-
-typedef struct {
- UINT32 rev;
-} LINUX_ATAG_REVISION;
-
-typedef struct {
- UINT16 lfb_width;
- UINT16 lfb_height;
- UINT16 lfb_depth;
- UINT16 lfb_linelength;
- UINT32 lfb_base;
- UINT32 lfb_size;
- UINT8 red_size;
- UINT8 red_pos;
- UINT8 green_size;
- UINT8 green_pos;
- UINT8 blue_size;
- UINT8 blue_pos;
- UINT8 rsvd_size;
- UINT8 rsvd_pos;
-} LINUX_ATAG_VIDEOLFB;
-
-typedef struct {
- CHAR8 cmdline[1];
-} LINUX_ATAG_CMDLINE;
-
-typedef struct {
- LINUX_ATAG_HEADER header;
- union {
- LINUX_ATAG_CORE core_tag;
- LINUX_ATAG_MEM mem_tag;
- LINUX_ATAG_VIDEOTEXT videotext_tag;
- LINUX_ATAG_RAMDISK ramdisk_tag;
- LINUX_ATAG_INITRD2 initrd2_tag;
- LINUX_ATAG_SERIALNR serialnr_tag;
- LINUX_ATAG_REVISION revision_tag;
- LINUX_ATAG_VIDEOLFB videolfb_tag;
- LINUX_ATAG_CMDLINE cmdline_tag;
- } body;
-} LINUX_ATAG;
-
-#endif /* __LINUX_ATAG_H__ */
diff --git a/ArmPkg/Application/LinuxLoader/Arm/LinuxStarter.c b/ArmPkg/Application/LinuxLoader/Arm/LinuxStarter.c deleted file mode 100644 index 960fdd6b3c..0000000000 --- a/ArmPkg/Application/LinuxLoader/Arm/LinuxStarter.c +++ /dev/null @@ -1,346 +0,0 @@ -/** @file
-*
-* Copyright (c) 2011-2015, ARM Limited. All rights reserved.
-*
-* 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 <Library/ArmLib.h>
-#include <Library/PcdLib.h>
-
-#include <Guid/Fdt.h>
-
-#include "LinuxLoader.h"
-
-#define ALIGN32_BELOW(addr) ALIGN_POINTER(addr - 32,32)
-
-#define IS_ADDRESS_IN_REGION(RegionStart, RegionSize, Address) \
- (((UINTN)(RegionStart) <= (UINTN)(Address)) && ((UINTN)(Address) <= ((UINTN)(RegionStart) + (UINTN)(RegionSize))))
-
-EFI_STATUS
-PrepareAtagList (
- IN EFI_PHYSICAL_ADDRESS SystemMemoryBase,
- IN CONST CHAR8* CommandLineString,
- IN EFI_PHYSICAL_ADDRESS InitrdImage,
- IN UINTN InitrdImageSize,
- OUT EFI_PHYSICAL_ADDRESS *AtagBase,
- OUT UINT32 *AtagSize
- );
-
-STATIC
-VOID
-PreparePlatformHardware (
- VOID
- )
-{
- //Note: Interrupts will be disabled by the GIC driver when ExitBootServices() will be called.
-
- // Clean before Disable else the Stack gets corrupted with old data.
- ArmCleanDataCache ();
- ArmDisableDataCache ();
- // Invalidate all the entries that might have snuck in.
- ArmInvalidateDataCache ();
-
- // Invalidate and disable the Instruction cache
- ArmDisableInstructionCache ();
- ArmInvalidateInstructionCache ();
-
- // Turn off MMU
- ArmDisableMmu ();
-}
-
-STATIC
-EFI_STATUS
-StartLinux (
- IN EFI_PHYSICAL_ADDRESS SystemMemoryBase,
- IN EFI_PHYSICAL_ADDRESS LinuxImage,
- IN UINTN LinuxImageSize,
- IN EFI_PHYSICAL_ADDRESS KernelParamsAddress,
- IN UINTN KernelParamsSize,
- IN UINT32 MachineType
- )
-{
- EFI_STATUS Status;
- LINUX_KERNEL LinuxKernel;
-
- // Shut down UEFI boot services. ExitBootServices() will notify every driver that created an event on
- // ExitBootServices event. Example the Interrupt DXE driver will disable the interrupts on this event.
- Status = ShutdownUefiBootServices ();
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "ERROR: Can not shutdown UEFI boot services. Status=0x%X\n", Status));
- return Status;
- }
-
- // Move the kernel parameters to any address inside the first 1MB.
- // This is necessary because the ARM Linux kernel requires
- // the FTD / ATAG List to reside entirely inside the first 1MB of
- // physical memory.
- //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) {
- //Note: There is no requirement on the alignment
- LinuxKernel = (LINUX_KERNEL)CopyMem (ALIGN32_BELOW (LINUX_KERNEL_MAX_OFFSET - LinuxImageSize), (VOID*)(UINTN)LinuxImage, LinuxImageSize);
- } else {
- LinuxKernel = (LINUX_KERNEL)(UINTN)LinuxImage;
- }
-
- // Check if the Linux Image is a uImage
- if (*(UINT32*)LinuxKernel == LINUX_UIMAGE_SIGNATURE) {
- // Assume the Image Entry Point is just after the uImage header (64-byte size)
- LinuxKernel = (LINUX_KERNEL)((UINTN)LinuxKernel + 64);
- LinuxImageSize -= 64;
- }
-
- // Check there is no overlapping between kernel and its parameters
- // We can only assert because it is too late to fallback to UEFI (ExitBootServices has been called).
- ASSERT (!IS_ADDRESS_IN_REGION (LinuxKernel, LinuxImageSize, KernelParamsAddress) &&
- !IS_ADDRESS_IN_REGION (LinuxKernel, LinuxImageSize, KernelParamsAddress + KernelParamsSize));
-
- //
- // Switch off interrupts, caches, mmu, etc
- //
- PreparePlatformHardware ();
-
- // Register and print out performance information
- PERF_END (NULL, "BDS", NULL, 0);
- if (PerformanceMeasurementEnabled ()) {
- PrintPerformance ();
- }
-
- //
- // Start the Linux Kernel
- //
-
- // Outside BootServices, so can't use Print();
- DEBUG ((EFI_D_ERROR, "\nStarting the kernel:\n\n"));
-
- // Jump to kernel with register set
- LinuxKernel ((UINTN)0, MachineType, (UINTN)KernelParamsAddress);
-
- // Kernel should never exit
- // After Life services are not provided
- ASSERT (FALSE);
- // We cannot recover the execution at this stage
- while (1);
-}
-
-/**
- Start a Linux kernel from a Device Path
-
- @param SystemMemoryBase Base of the system memory
- @param LinuxKernel Device Path to the Linux Kernel
- @param Parameters Linux kernel arguments
- @param Fdt Device Path to the Flat Device Tree
- @param MachineType ARM machine type value
-
- @retval EFI_SUCCESS All drivers have been connected
- @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found
- @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.
- @retval RETURN_UNSUPPORTED ATAG is not support by this architecture
-
-**/
-EFI_STATUS
-BootLinuxAtag (
- IN EFI_PHYSICAL_ADDRESS SystemMemoryBase,
- IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath,
- IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath,
- IN CONST CHAR8* CommandLineArguments,
- IN UINTN MachineType
- )
-{
- EFI_STATUS Status;
- UINT32 LinuxImageSize;
- UINT32 InitrdImageBaseSize = 0;
- UINT32 InitrdImageSize = 0;
- UINT32 AtagSize;
- EFI_PHYSICAL_ADDRESS AtagBase;
- EFI_PHYSICAL_ADDRESS LinuxImage;
- EFI_PHYSICAL_ADDRESS InitrdImageBase = 0;
- EFI_PHYSICAL_ADDRESS InitrdImage = 0;
-
- PERF_START (NULL, "BDS", NULL, 0);
-
- // Load the Linux kernel from a device path
- LinuxImage = LINUX_KERNEL_MAX_OFFSET;
- Status = BdsLoadImage (LinuxKernelDevicePath, AllocateMaxAddress, &LinuxImage, &LinuxImageSize);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not find Linux kernel.\n");
- return Status;
- }
-
- if (InitrdDevicePath) {
- // Load the initrd near to the Linux kernel
- InitrdImageBase = LINUX_KERNEL_MAX_OFFSET;
- Status = BdsLoadImage (InitrdDevicePath, AllocateMaxAddress, &InitrdImageBase, &InitrdImageBaseSize);
- if (Status == EFI_OUT_OF_RESOURCES) {
- Status = BdsLoadImage (InitrdDevicePath, AllocateAnyPages, &InitrdImageBase, &InitrdImageBaseSize);
- }
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not find initrd image.\n");
- goto EXIT_FREE_LINUX;
- }
-
- // Check if the initrd is a uInitrd
- if (*(UINT32*)((UINTN)InitrdImageBase) == LINUX_UIMAGE_SIGNATURE) {
- // Skip the 64-byte image header
- InitrdImage = (EFI_PHYSICAL_ADDRESS)((UINTN)InitrdImageBase + 64);
- InitrdImageSize = InitrdImageBaseSize - 64;
- } else {
- InitrdImage = InitrdImageBase;
- InitrdImageSize = InitrdImageBaseSize;
- }
- }
-
- //
- // Setup the Linux Kernel Parameters
- //
-
- // By setting address=0 we leave the memory allocation to the function
- Status = PrepareAtagList (SystemMemoryBase, CommandLineArguments, InitrdImage, InitrdImageSize, &AtagBase, &AtagSize);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Can not prepare ATAG list. Status=0x%X\n", Status);
- goto EXIT_FREE_INITRD;
- }
-
- return StartLinux (SystemMemoryBase, LinuxImage, LinuxImageSize, AtagBase, AtagSize, MachineType);
-
-EXIT_FREE_INITRD:
- if (InitrdDevicePath) {
- gBS->FreePages (InitrdImageBase, EFI_SIZE_TO_PAGES (InitrdImageBaseSize));
- }
-
-EXIT_FREE_LINUX:
- gBS->FreePages (LinuxImage, EFI_SIZE_TO_PAGES (LinuxImageSize));
-
- return Status;
-}
-
-/**
- Start a Linux kernel from a Device Path
-
- @param LinuxKernelDevicePath Device Path to the Linux Kernel
- @param InitrdDevicePath Device Path to the Initrd
- @param CommandLineArguments Linux command line
-
- @retval EFI_SUCCESS All drivers have been connected
- @retval EFI_NOT_FOUND The Linux kernel Device Path has not been found
- @retval EFI_OUT_OF_RESOURCES There is not enough resource memory to store the matching results.
-
-**/
-EFI_STATUS
-BootLinuxFdt (
- IN EFI_PHYSICAL_ADDRESS SystemMemoryBase,
- IN EFI_DEVICE_PATH_PROTOCOL* LinuxKernelDevicePath,
- IN EFI_DEVICE_PATH_PROTOCOL* InitrdDevicePath,
- IN EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath,
- IN CONST CHAR8* CommandLineArguments
- )
-{
- EFI_STATUS Status;
- UINT32 LinuxImageSize;
- UINT32 InitrdImageBaseSize = 0;
- UINT32 InitrdImageSize = 0;
- VOID *InstalledFdtBase;
- UINT32 FdtBlobSize;
- EFI_PHYSICAL_ADDRESS FdtBlobBase;
- EFI_PHYSICAL_ADDRESS LinuxImage;
- EFI_PHYSICAL_ADDRESS InitrdImageBase = 0;
- EFI_PHYSICAL_ADDRESS InitrdImage = 0;
-
- PERF_START (NULL, "BDS", NULL, 0);
-
- // Load the Linux kernel from a device path
- LinuxImage = LINUX_KERNEL_MAX_OFFSET;
- Status = BdsLoadImage (LinuxKernelDevicePath, AllocateMaxAddress, &LinuxImage, &LinuxImageSize);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not find Linux kernel.\n");
- return Status;
- }
-
- if (InitrdDevicePath) {
- InitrdImageBase = LINUX_KERNEL_MAX_OFFSET;
- Status = BdsLoadImage (InitrdDevicePath, AllocateMaxAddress, &InitrdImageBase, &InitrdImageBaseSize);
- if (Status == EFI_OUT_OF_RESOURCES) {
- Status = BdsLoadImage (InitrdDevicePath, AllocateAnyPages, &InitrdImageBase, &InitrdImageBaseSize);
- }
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not find initrd image.\n");
- goto EXIT_FREE_LINUX;
- }
-
- // Check if the initrd is a uInitrd
- if (*(UINT32*)((UINTN)InitrdImageBase) == LINUX_UIMAGE_SIGNATURE) {
- // Skip the 64-byte image header
- InitrdImage = (EFI_PHYSICAL_ADDRESS)((UINTN)InitrdImageBase + 64);
- InitrdImageSize = InitrdImageBaseSize - 64;
- } else {
- InitrdImage = InitrdImageBase;
- InitrdImageSize = InitrdImageBaseSize;
- }
- }
-
- if (FdtDevicePath == NULL) {
- //
- // Get the FDT from the Configuration Table.
- // The FDT will be reloaded in PrepareFdt() to a more appropriate
- // location for the Linux Kernel.
- //
- Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &InstalledFdtBase);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not get the Device Tree blob (%r).\n", Status);
- goto EXIT_FREE_INITRD;
- }
- FdtBlobBase = (EFI_PHYSICAL_ADDRESS)(UINTN)InstalledFdtBase;
- FdtBlobSize = fdt_totalsize (InstalledFdtBase);
- } else {
- //
- // FDT device path explicitly defined. The FDT is relocated later to a
- // more appropriate location for the Linux kernel.
- //
- FdtBlobBase = LINUX_KERNEL_MAX_OFFSET;
- Status = BdsLoadImage (FdtDevicePath, AllocateMaxAddress, &FdtBlobBase, &FdtBlobSize);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Did not find Device Tree blob (%r).\n", Status);
- goto EXIT_FREE_INITRD;
- }
- }
-
- // 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 (SystemMemoryBase, CommandLineArguments, InitrdImage, InitrdImageSize, &FdtBlobBase, &FdtBlobSize);
- if (EFI_ERROR (Status)) {
- Print (L"ERROR: Can not load kernel with FDT. Status=%r\n", Status);
- goto EXIT_FREE_FDT;
- }
-
- return StartLinux (SystemMemoryBase, LinuxImage, LinuxImageSize, FdtBlobBase, FdtBlobSize, ARM_FDT_MACHINE_TYPE);
-
-EXIT_FREE_FDT:
- gBS->FreePages (FdtBlobBase, EFI_SIZE_TO_PAGES (FdtBlobSize));
-
-EXIT_FREE_INITRD:
- if (InitrdDevicePath) {
- gBS->FreePages (InitrdImageBase, EFI_SIZE_TO_PAGES (InitrdImageBaseSize));
- }
-
-EXIT_FREE_LINUX:
- gBS->FreePages (LinuxImage, EFI_SIZE_TO_PAGES (LinuxImageSize));
-
- return Status;
-}
|