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ArmVirtPkg/XenVirtMemInfoLib: refactor reading of the PA space size

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Use the new ArmLib helper to read the CPU's physical address limit
so we can drop our own homecooked one.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Ard Biesheuvel
2018-11-23 13:14:29 +01:00
parent 95d04ebca8
commit 2f9b248af8
4 changed files with 7 additions and 75 deletions
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12
ArmVirtPkg/Library/XenVirtMemInfoLib/XenVirtMemInfoLib.c
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@@ -14,15 +14,11 @@
#include <Base.h>
#include <Library/ArmLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
STATIC ARM_MEMORY_REGION_DESCRIPTOR mVirtualMemoryTable[2];
EFI_PHYSICAL_ADDRESS
ArmGetPhysAddrTop (
VOID
);
/**
Return the Virtual Memory Map of your platform
@@ -42,8 +38,12 @@ ArmVirtGetMemoryMap (
OUT ARM_MEMORY_REGION_DESCRIPTOR **VirtualMemoryMap
)
{
EFI_PHYSICAL_ADDRESS TopOfAddressSpace;
ASSERT (VirtualMemoryMap != NULL);
TopOfAddressSpace = LShiftU64 (1ULL, ArmGetPhysicalAddressBits ());
//
// Map the entire physical memory space as cached. The only device
// we care about is the GIC, which will be stage 2 mapped as a device
@@ -51,7 +51,7 @@ ArmVirtGetMemoryMap (
//
mVirtualMemoryTable[0].PhysicalBase = 0x0;
mVirtualMemoryTable[0].VirtualBase = 0x0;
mVirtualMemoryTable[0].Length = ArmGetPhysAddrTop ();
mVirtualMemoryTable[0].Length = TopOfAddressSpace;
mVirtualMemoryTable[0].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
mVirtualMemoryTable[1].PhysicalBase = 0x0;