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ArmPkg/ArmMmuLib: take the CPU supported maximum PA space into account

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In preparation of dropping PcdPrePiCpuMemorySize entirely, base the
maximum size of the identity map on the capabilities of the CPU.
Since that may exceed what is architecturally permitted when using
4 KB pages, take MAX_ADDRESS into account as well.

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: Leif Lindholm <leif.lindholm@linaro.org>
This commit is contained in:
Ard Biesheuvel
2018-11-23 13:14:28 +01:00
parent 2f9b248af8
commit e36b243c71
3 changed files with 9 additions and 8 deletions
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3
ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf
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@@ -40,8 +40,5 @@
CacheMaintenanceLib
MemoryAllocationLib
[Pcd.AARCH64]
gEmbeddedTokenSpaceGuid.PcdPrePiCpuMemorySize
[Pcd.ARM]
gArmTokenSpaceGuid.PcdNormalMemoryNonshareableOverride