Clone the existing ArmPlatformGetVirtualMemoryMap () for this platform, clean it up slightly (by removing the support for uncached DRAM mappings), and turn it into a new ArmVirtMemInfoLib implementation.
In a future patch, we will add this library to the ordinary ArmVirtQemu platform as well. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> --- ArmVirtPkg/ArmVirtQemuKernel.dsc | 1 + ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S | 39 ++++++++ ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S | 24 +++++ ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c | 101 ++++++++++++++++++++ ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf | 53 ++++++++++ 5 files changed, 218 insertions(+) diff --git a/ArmVirtPkg/ArmVirtQemuKernel.dsc b/ArmVirtPkg/ArmVirtQemuKernel.dsc index 7e5d584344b4..f50d30388cf2 100644 --- a/ArmVirtPkg/ArmVirtQemuKernel.dsc +++ b/ArmVirtPkg/ArmVirtQemuKernel.dsc @@ -49,6 +49,7 @@ [LibraryClasses.common] QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/BaseQemuFwCfgS3LibNull.inf ArmPlatformLib|ArmVirtPkg/Library/ArmQemuRelocatablePlatformLib/ArmQemuRelocatablePlatformLib.inf + ArmVirtMemInfoLib|ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf TimerLib|ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.inf NorFlashPlatformLib|ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S b/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S new file mode 100644 index 000000000000..a1f6a194d59b --- /dev/null +++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/AArch64/PhysAddrTop.S @@ -0,0 +1,39 @@ +# +# Copyright (c) 2011-2013, ARM Limited. All rights reserved. +# Copyright (c) 2016-2017, 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 <AsmMacroIoLibV8.h> + +//EFI_PHYSICAL_ADDRESS +//GetPhysAddrTop ( +// VOID +// ); +ASM_FUNC(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/QemuVirtMemInfoLib/Arm/PhysAddrTop.S b/ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S new file mode 100644 index 000000000000..9cd81529fb3d --- /dev/null +++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/Arm/PhysAddrTop.S @@ -0,0 +1,24 @@ +# +# Copyright (c) 2011-2013, ARM Limited. All rights reserved. +# Copyright (c) 2014-2017, 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 <AsmMacroIoLib.h> + +//EFI_PHYSICAL_ADDRESS +//GetPhysAddrTop ( +// VOID +// ); +ASM_FUNC(ArmGetPhysAddrTop) + mov r0, #0x00000000 + mov r1, #0x10000 + bx lr diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c new file mode 100644 index 000000000000..b08305fe4a4f --- /dev/null +++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c @@ -0,0 +1,101 @@ +/** @file + + Copyright (c) 2014-2017, 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 <Base.h> +#include <Library/ArmLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/DebugLib.h> +#include <Library/MemoryAllocationLib.h> + +// Number of Virtual Memory Map Descriptors +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 5 + +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 +ArmVirtGetMemoryMap ( + OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap + ) +{ + ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable; + UINT64 TopOfMemory; + UINTN TableSize; + + ASSERT (VirtualMemoryMap != NULL); + + TableSize = sizeof (ARM_MEMORY_REGION_DESCRIPTOR) * + MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS; + VirtualMemoryTable = AllocatePages (EFI_SIZE_TO_PAGES (TableSize)); + + if (VirtualMemoryTable == NULL) { + DEBUG ((DEBUG_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 = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK; + + DEBUG ((DEBUG_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 + TopOfMemory = MIN (1ULL << FixedPcdGet8 (PcdPrePiCpuMemorySize), + ArmGetPhysAddrTop ()); + VirtualMemoryTable[2].PhysicalBase = VirtualMemoryTable[0].Length + VirtualMemoryTable[1].Length; + VirtualMemoryTable[2].VirtualBase = VirtualMemoryTable[2].PhysicalBase; + VirtualMemoryTable[2].Length = TopOfMemory - + 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 = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK; + + // End of Table + ZeroMem (&VirtualMemoryTable[4], sizeof (ARM_MEMORY_REGION_DESCRIPTOR)); + + *VirtualMemoryMap = VirtualMemoryTable; +} diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf new file mode 100644 index 000000000000..8f6ba006fdfd --- /dev/null +++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf @@ -0,0 +1,53 @@ +#/* @file +# +# Copyright (c) 2011-2015, ARM Limited. All rights reserved. +# Copyright (c) 2014-2017, 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 = 0x0001001A + BASE_NAME = QemuVirtMemInfoLib + FILE_GUID = 9b30ca82-6746-4a82-a3e6-11ea79df3b46 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = ArmVirtMemInfoLib + +[Sources] + QemuVirtMemInfoLib.c + +[Sources.ARM] + Arm/PhysAddrTop.S + +[Sources.AARCH64] + AArch64/PhysAddrTop.S + +[Packages] + ArmPkg/ArmPkg.dec + ArmVirtPkg/ArmVirtPkg.dec + EmbeddedPkg/EmbeddedPkg.dec + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + +[LibraryClasses] + ArmLib + BaseMemoryLib + DebugLib + MemoryAllocationLib + +[Pcd] + gArmTokenSpaceGuid.PcdFdBaseAddress + gArmTokenSpaceGuid.PcdSystemMemoryBase + gArmTokenSpaceGuid.PcdSystemMemorySize + +[FixedPcd] + gArmTokenSpaceGuid.PcdFdSize + gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize -- 2.11.0 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
