From 577393c2726dff145f8ad11ecaf46ed860adfbd3 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Fri, 5 Feb 2016 14:54:42 +0100 Subject: ArmVirtPkg: introduce new ArmQemuRelocatablePlatformLib This introduces ArmQemuRelocatablePlatformLib, which started out as a straight copy of ArmXenRelocatablePlatformLib, but has been modified so that ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf can be used with QEMU as well as with Xen. It retains the self relocation and FDT parsing for the system memory, but uses the QEMU MMU layout. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel Acked-by: Laszlo Ersek --- .../AARCH64/RelocatableVirtHelper.S | 157 +++++++++++++++++++++ .../ARM/RelocatableVirtHelper.S | 141 ++++++++++++++++++ .../ArmQemuRelocatablePlatformLib.inf | 64 +++++++++ .../ArmQemuRelocatablePlatformLib/FdtParser.c | 92 ++++++++++++ .../ArmQemuRelocatablePlatformLib/QemuVirtMem.c | 107 ++++++++++++++ .../RelocatableVirt.c | 71 ++++++++++ 6 files changed, 632 insertions(+) create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ArmQemuRelocatablePlatformLib.inf create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/FdtParser.c create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/QemuVirtMem.c create mode 100644 ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/RelocatableVirt.c (limited to 'ArmVirtPkg') diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S new file mode 100644 index 0000000000..0980a38720 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/AARCH64/RelocatableVirtHelper.S @@ -0,0 +1,157 @@ +# +# Copyright (c) 2011-2013, 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 +#include +#include +#include +#include + +.text +.align 2 + +GCC_ASM_EXPORT(ArmPlatformPeiBootAction) +GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore) +GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId) +GCC_ASM_EXPORT(ArmPlatformGetCorePosition) +GCC_ASM_EXPORT(ArmGetPhysAddrTop) + +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore) +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask) +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdCoreCount) + +.LArm64LinuxMagic: + .byte 0x41, 0x52, 0x4d, 0x64 + +// VOID +// ArmPlatformPeiBootAction ( +// VOID *DeviceTreeBaseAddress, // passed by loader in x0 +// VOID *ImageBase // passed by FDF trampoline in x1 +// ); +ASM_PFX(ArmPlatformPeiBootAction): + // + // If we are booting from RAM using the Linux kernel boot protocol, x0 will + // point to the DTB image in memory. Otherwise, use the default value defined + // by the platform. + // + cbnz x0, 0f + ldr x0, PcdGet64 (PcdDeviceTreeInitialBaseAddress) + +0:mov x29, x30 // preserve LR + mov x28, x0 // preserve DTB pointer + mov x27, x1 // preserve base of image pointer + + // + // The base of the runtime image has been preserved in x1. Check whether + // the expected magic number can be found in the header. + // + ldr w8, .LArm64LinuxMagic + ldr w9, [x1, #0x38] + cmp w8, w9 + bne .Lout + + // + // + // OK, so far so good. We have confirmed that we likely have a DTB and are + // booting via the arm64 Linux boot protocol. Update the base-of-image PCD + // to the actual relocated value, and add the shift of PcdFdBaseAddress to + // PcdFvBaseAddress as well + // + adr x8, PcdGet64 (PcdFdBaseAddress) + adr x9, PcdGet64 (PcdFvBaseAddress) + ldr x6, [x8] + ldr x7, [x9] + sub x7, x7, x6 + add x7, x7, x1 + str x1, [x8] + str x7, [x9] + + // + // Discover the memory size and offset from the DTB, and record in the + // respective PCDs. This will also return false if a corrupt DTB is + // encountered. Since we are calling a C function, use the window at the + // beginning of the FD image as a temp stack. + // + adr x1, PcdGet64 (PcdSystemMemorySize) + adr x2, PcdGet64 (PcdSystemMemoryBase) + mov sp, x7 + bl FindMemnode + cbz x0, .Lout + + // + // Copy the DTB to the slack space right after the 64 byte arm64/Linux style + // image header at the base of this image (defined in the FDF), and record the + // pointer in PcdDeviceTreeInitialBaseAddress. + // + adr x8, PcdGet64 (PcdDeviceTreeInitialBaseAddress) + add x27, x27, #0x40 + str x27, [x8] + + mov x0, x27 + mov x1, x28 + bl CopyFdt + +.Lout: + ret x29 + +//UINTN +//ArmPlatformGetPrimaryCoreMpId ( +// VOID +// ); +ASM_PFX(ArmPlatformGetPrimaryCoreMpId): + LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, x0) + ldrh w0, [x0] + ret + +//UINTN +//ArmPlatformIsPrimaryCore ( +// IN UINTN MpId +// ); +ASM_PFX(ArmPlatformIsPrimaryCore): + mov x0, #1 + ret + +//UINTN +//ArmPlatformGetCorePosition ( +// IN UINTN MpId +// ); +// With this function: CorePos = (ClusterId * 4) + CoreId +ASM_PFX(ArmPlatformGetCorePosition): + and x1, x0, #ARM_CORE_MASK + and x0, x0, #ARM_CLUSTER_MASK + add x0, x1, x0, LSR #6 + ret + +//EFI_PHYSICAL_ADDRESS +//GetPhysAddrTop ( +// VOID +// ); +ASM_PFX(ArmGetPhysAddrTop): + mrs x0, id_aa64mmfr0_el1 + adr x1, .LPARanges + and x0, x0, #7 + ldrb w1, [x1, x0] + mov x0, #1 + lsl x0, x0, x1 + ret + +// +// Bits 0..2 of the AA64MFR0_EL1 system register encode the size of the +// physical address space support on this CPU: +// 0 == 32 bits, 1 == 36 bits, etc etc +// 6 and 7 are reserved +// +.LPARanges: + .byte 32, 36, 40, 42, 44, 48, -1, -1 + +ASM_FUNCTION_REMOVE_IF_UNREFERENCED diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S new file mode 100644 index 0000000000..3d77ea2157 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ARM/RelocatableVirtHelper.S @@ -0,0 +1,141 @@ +# +# Copyright (c) 2011-2013, ARM Limited. All rights reserved. +# Copyright (c) 2014, Linaro 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 +#include +#include +#include +#include + +.text +.align 2 + +GCC_ASM_EXPORT(ArmPlatformPeiBootAction) +GCC_ASM_EXPORT(ArmPlatformIsPrimaryCore) +GCC_ASM_EXPORT(ArmPlatformGetPrimaryCoreMpId) +GCC_ASM_EXPORT(ArmPlatformGetCorePosition) +GCC_ASM_EXPORT(ArmGetPhysAddrTop) + +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCore) +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdArmPrimaryCoreMask) +GCC_ASM_IMPORT(_gPcd_FixedAtBuild_PcdCoreCount) + +.LArm32LinuxMagic: + .byte 0x18, 0x28, 0x6f, 0x01 + +ASM_PFX(ArmPlatformPeiBootAction): + // + // If we are booting from RAM using the Linux kernel boot protocol, r0 will + // point to the DTB image in memory. Otherwise, use the default value defined + // by the platform. + // + teq r0, #0 + bne 0f + ldr r0, =PcdGet64 (PcdDeviceTreeInitialBaseAddress) + +0:mov r11, r14 // preserve LR + mov r10, r0 // preserve DTB pointer + mov r9, r1 // preserve base of image pointer + + // + // The base of the runtime image has been preserved in r1. Check whether + // the expected magic number can be found in the header. + // + ldr r8, .LArm32LinuxMagic + ldr r7, [r1, #0x24] + cmp r7, r8 + bne .Lout + + // + // + // OK, so far so good. We have confirmed that we likely have a DTB and are + // booting via the ARM Linux boot protocol. Update the base-of-image PCD + // to the actual relocated value, and add the shift of PcdFdBaseAddress to + // PcdFvBaseAddress as well + // + ldr r8, =PcdGet64 (PcdFdBaseAddress) + ldr r7, =PcdGet64 (PcdFvBaseAddress) + ldr r6, [r8] + ldr r5, [r7] + sub r5, r5, r6 + add r5, r5, r1 + str r1, [r8] + str r5, [r7] + + // + // Discover the memory size and offset from the DTB, and record in the + // respective PCDs. This will also return false if a corrupt DTB is + // encountered. Since we are calling a C function, use the window at the + // beginning of the FD image as a temp stack. + // + ldr r1, =PcdGet64 (PcdSystemMemorySize) + ldr r2, =PcdGet64 (PcdSystemMemoryBase) + mov sp, r5 + bl FindMemnode + teq r0, #0 + beq .Lout + + // + // Copy the DTB to the slack space right after the 64 byte arm64/Linux style + // image header at the base of this image (defined in the FDF), and record the + // pointer in PcdDeviceTreeInitialBaseAddress. + // + ldr r8, =PcdGet64 (PcdDeviceTreeInitialBaseAddress) + add r9, r9, #0x40 + str r9, [r8] + + mov r0, r9 + mov r1, r10 + bl CopyFdt + +.Lout: + bx r11 + +//UINTN +//ArmPlatformGetPrimaryCoreMpId ( +// VOID +// ); +ASM_PFX(ArmPlatformGetPrimaryCoreMpId): + LoadConstantToReg (_gPcd_FixedAtBuild_PcdArmPrimaryCore, r0) + ldr r0, [r0] + bx lr + +//UINTN +//ArmPlatformIsPrimaryCore ( +// IN UINTN MpId +// ); +ASM_PFX(ArmPlatformIsPrimaryCore): + mov r0, #1 + bx lr + +//UINTN +//ArmPlatformGetCorePosition ( +// IN UINTN MpId +// ); +// With this function: CorePos = (ClusterId * 4) + CoreId +ASM_PFX(ArmPlatformGetCorePosition): + and r1, r0, #ARM_CORE_MASK + and r0, r0, #ARM_CLUSTER_MASK + add r0, r1, r0, LSR #6 + bx lr + +//EFI_PHYSICAL_ADDRESS +//GetPhysAddrTop ( +// VOID +// ); +ASM_PFX(ArmGetPhysAddrTop): + mov r0, #0x00000000 + mov r1, #0x10000 + bx lr + diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ArmQemuRelocatablePlatformLib.inf b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ArmQemuRelocatablePlatformLib.inf new file mode 100644 index 0000000000..acd523bbd2 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ArmQemuRelocatablePlatformLib.inf @@ -0,0 +1,64 @@ +#/* @file +# Copyright (c) 2011-2015, ARM Limited. All rights reserved. +# Copyright (c) 2014, Linaro 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. +# +#*/ + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = ArmXenRelocatablePlatformLib + FILE_GUID = c8602718-4faa-4119-90ca-cae72509ac4c + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = ArmPlatformLib|SEC PEIM + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + EmbeddedPkg/EmbeddedPkg.dec + ArmPkg/ArmPkg.dec + ArmPlatformPkg/ArmPlatformPkg.dec + ArmVirtPkg/ArmVirtPkg.dec + +[LibraryClasses] + IoLib + ArmLib + PrintLib + FdtLib + +[Sources.common] + RelocatableVirt.c + QemuVirtMem.c + FdtParser.c + +[Sources.AARCH64] + AARCH64/RelocatableVirtHelper.S + +[Sources.ARM] + ARM/RelocatableVirtHelper.S + +[FeaturePcd] + gEmbeddedTokenSpaceGuid.PcdCacheEnable + gArmPlatformTokenSpaceGuid.PcdSystemMemoryInitializeInSec + +[PatchPcd] + gArmVirtTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress + gArmTokenSpaceGuid.PcdFdBaseAddress + gArmTokenSpaceGuid.PcdFvBaseAddress + gArmTokenSpaceGuid.PcdSystemMemoryBase + gArmTokenSpaceGuid.PcdSystemMemorySize + +[FixedPcd] + gArmPlatformTokenSpaceGuid.PcdCoreCount + gArmTokenSpaceGuid.PcdArmPrimaryCoreMask + gArmTokenSpaceGuid.PcdArmPrimaryCore + gArmTokenSpaceGuid.PcdFdSize + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/FdtParser.c b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/FdtParser.c new file mode 100644 index 0000000000..46a5fe6409 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/FdtParser.c @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2015, Linaro Ltd. 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 +#include + +BOOLEAN +FindMemnode ( + IN VOID *DeviceTreeBlob, + OUT UINT64 *SystemMemoryBase, + OUT UINT64 *SystemMemorySize + ) +{ + INT32 MemoryNode; + INT32 AddressCells; + INT32 SizeCells; + INT32 Length; + CONST INT32 *Prop; + + if (fdt_check_header (DeviceTreeBlob) != 0) { + return FALSE; + } + + // + // Look for a node called "memory" at the lowest level of the tree + // + MemoryNode = fdt_path_offset (DeviceTreeBlob, "/memory"); + if (MemoryNode <= 0) { + return FALSE; + } + + // + // Retrieve the #address-cells and #size-cells properties + // from the root node, or use the default if not provided. + // + AddressCells = 1; + SizeCells = 1; + + Prop = fdt_getprop (DeviceTreeBlob, 0, "#address-cells", &Length); + if (Length == 4) { + AddressCells = fdt32_to_cpu (*Prop); + } + + Prop = fdt_getprop (DeviceTreeBlob, 0, "#size-cells", &Length); + if (Length == 4) { + SizeCells = fdt32_to_cpu (*Prop); + } + + // + // Now find the 'reg' property of the /memory node, and read the first + // range listed. + // + Prop = fdt_getprop (DeviceTreeBlob, MemoryNode, "reg", &Length); + + if (Length < (AddressCells + SizeCells) * sizeof (INT32)) { + return FALSE; + } + + if (AddressCells == 1) { + *SystemMemoryBase = fdt32_to_cpu (*Prop); + } else { + *SystemMemoryBase = fdt64_to_cpu (*(UINT64 *)Prop); + } + Prop += AddressCells; + + if (SizeCells == 1) { + *SystemMemorySize = fdt32_to_cpu (*Prop); + } else { + *SystemMemorySize = fdt64_to_cpu (*(UINT64 *)Prop); + } + + return TRUE; +} + +VOID +CopyFdt ( + IN VOID *FdtDest, + IN VOID *FdtSource + ) +{ + fdt_pack(FdtSource); + CopyMem (FdtDest, FdtSource, fdt_totalsize (FdtSource)); +} diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/QemuVirtMem.c b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/QemuVirtMem.c new file mode 100644 index 0000000000..be512aa3d5 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/QemuVirtMem.c @@ -0,0 +1,107 @@ +/** @file +* +* Copyright (c) 2014, Linaro 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 +#include +#include +#include +#include +#include +#include + +// Number of Virtual Memory Map Descriptors +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 5 + +// DDR attributes +#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK +#define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED + +EFI_PHYSICAL_ADDRESS +ArmGetPhysAddrTop ( + VOID + ); + +/** + Return the Virtual Memory Map of your platform + + This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU + on your platform. + + @param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR + describing a Physical-to-Virtual Memory + mapping. This array must be ended by a + zero-filled entry + +**/ +VOID +ArmPlatformGetVirtualMemoryMap ( + IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap + ) +{ + ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable; + + ASSERT (VirtualMemoryMap != NULL); + + VirtualMemoryTable = AllocatePages ( + EFI_SIZE_TO_PAGES ( + sizeof (ARM_MEMORY_REGION_DESCRIPTOR) + * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS + ) + ); + + if (VirtualMemoryTable == NULL) { + DEBUG ((EFI_D_ERROR, "%a: Error: Failed AllocatePages()\n", __FUNCTION__)); + return; + } + + // System DRAM + VirtualMemoryTable[0].PhysicalBase = PcdGet64 (PcdSystemMemoryBase); + VirtualMemoryTable[0].VirtualBase = VirtualMemoryTable[0].PhysicalBase; + VirtualMemoryTable[0].Length = PcdGet64 (PcdSystemMemorySize); + VirtualMemoryTable[0].Attributes = DDR_ATTRIBUTES_CACHED; + + DEBUG ((EFI_D_INFO, "%a: Dumping System DRAM Memory Map:\n" + "\tPhysicalBase: 0x%lX\n" + "\tVirtualBase: 0x%lX\n" + "\tLength: 0x%lX\n", + __FUNCTION__, + VirtualMemoryTable[0].PhysicalBase, + VirtualMemoryTable[0].VirtualBase, + VirtualMemoryTable[0].Length)); + + // Peripheral space before DRAM + VirtualMemoryTable[1].PhysicalBase = 0x0; + VirtualMemoryTable[1].VirtualBase = 0x0; + VirtualMemoryTable[1].Length = VirtualMemoryTable[0].PhysicalBase; + VirtualMemoryTable[1].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; + + // Peripheral space after DRAM + VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length; + VirtualMemoryTable[2].VirtualBase = VirtualMemoryTable[2].PhysicalBase; + VirtualMemoryTable[2].Length = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize), + ArmGetPhysAddrTop ()) - + VirtualMemoryTable[2].PhysicalBase; + VirtualMemoryTable[2].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE; + + // Remap the FD region as normal executable memory + VirtualMemoryTable[3].PhysicalBase = PcdGet64 (PcdFdBaseAddress); + VirtualMemoryTable[3].VirtualBase = VirtualMemoryTable[3].PhysicalBase; + VirtualMemoryTable[3].Length = FixedPcdGet32 (PcdFdSize); + VirtualMemoryTable[3].Attributes = DDR_ATTRIBUTES_CACHED; + + // End of Table + ZeroMem (&VirtualMemoryTable[4], sizeof (ARM_MEMORY_REGION_DESCRIPTOR)); + + *VirtualMemoryMap = VirtualMemoryTable; +} diff --git a/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/RelocatableVirt.c b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/RelocatableVirt.c new file mode 100644 index 0000000000..c10c09fed2 --- /dev/null +++ b/ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/RelocatableVirt.c @@ -0,0 +1,71 @@ +/** @file +* +* Copyright (c) 2011-2013, ARM Limited. All rights reserved. +* Copyright (c) 2014, Linaro Limited. All rights reserved. +* Copyright (c) 2014, Red Hat, Inc. +* +* +* 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 +#include +#include +#include +#include + +/** + Return the current Boot Mode + + This function returns the boot reason on the platform + + @return Return the current Boot Mode of the platform + +**/ +EFI_BOOT_MODE +ArmPlatformGetBootMode ( + VOID + ) +{ + return BOOT_WITH_FULL_CONFIGURATION; +} + +/** + This function is called by PrePeiCore, in the SEC phase. +**/ +RETURN_STATUS +ArmPlatformInitialize ( + IN UINTN MpId + ) +{ + // + // We are relying on ArmPlatformInitializeSystemMemory () being called from + // InitializeMemory (), which only occurs if the following feature is disabled + // + ASSERT (!FeaturePcdGet (PcdSystemMemoryInitializeInSec)); + return RETURN_SUCCESS; +} + +VOID +ArmPlatformInitializeSystemMemory ( + VOID + ) +{ +} + +VOID +ArmPlatformGetPlatformPpiList ( + OUT UINTN *PpiListSize, + OUT EFI_PEI_PPI_DESCRIPTOR **PpiList + ) +{ + *PpiListSize = 0; + *PpiList = NULL; +} -- cgit v1.2.3