3043603401
Create a new ArmVirtMemInfoLib for ArmVirtQemuKernel by cloning the existing ArmPlatformGetVirtualMemoryMap () for this platform, (ArmQemuRelocatablePlatformLib *not* ArmVirtPlatformLib), and cleaning it up: - remove support for uncached DRAM mappings - replace EFI_D_xxx with DEBUG_xxx throughout - use a temp variable to hold the top of the physical address space - use AllocatePool () instead of AllocatePages (), given that we use 160 bytes only, and the memory is never freed. 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.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/** @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. The allocated memory
|
|
will not be freed.
|
|
|
|
**/
|
|
VOID
|
|
ArmVirtGetMemoryMap (
|
|
OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap
|
|
)
|
|
{
|
|
ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
|
|
UINT64 TopOfMemory;
|
|
|
|
ASSERT (VirtualMemoryMap != NULL);
|
|
|
|
VirtualMemoryTable = AllocatePool (sizeof (ARM_MEMORY_REGION_DESCRIPTOR) *
|
|
MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
|
|
|
|
if (VirtualMemoryTable == NULL) {
|
|
DEBUG ((DEBUG_ERROR, "%a: Error: Failed AllocatePool()\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;
|
|
}
|