Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 74467627321735a9d898aa261dccc3c83330d93a
https://github.com/tianocore/edk2/commit/74467627321735a9d898aa261dccc3c83330d93a
Author: Levi Yun <[email protected]>
Date: 2025-11-14 (Fri, 14 Nov 2025)
Changed paths:
M MdePkg/Include/AArch64/AArch64Mmu.h
M UefiCpuPkg/Include/Library/ArmMmuLib.h
M UefiCpuPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c
Log Message:
-----------
MdePkg,UefiCpuPkg: fix wrong DS bit and add helper to check it
In FEAT_LPA2, the location of the DS bit in TCR_EL2
depending on the value of HCR_EL2.E2H:
1. When HCR_EL2.E2H = 0, the DS bit is located at bit 32 in TCR_EL2.
2. When HCR_EL2.E2H = 1 (EL0&2), the DS bit is located at
bit 59 in TCR_EL2, which matches its position in TCR_EL1.
However, the current implementation checks only bit 59 to determine
whether LPA2 is enabled, even when HCR_EL2.E2H is not set.
To address this issue, this change adds the necessary definitions
and a helper function to correctly check whether LPA2 is enabled.
Continuous-integration-options: PatchCheck.ignore-multi-package
Signed-off-by: Yeoreum Yun <[email protected]>
Commit: c624a06aa3a9931e7d1ce1a8f51646438b74e4d2
https://github.com/tianocore/edk2/commit/c624a06aa3a9931e7d1ce1a8f51646438b74e4d2
Author: Levi Yun <[email protected]>
Date: 2025-11-14 (Fri, 14 Nov 2025)
Changed paths:
M ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c
M UefiCpuPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c
Log Message:
-----------
ArmPkg,UefiCpuPkg: fix boot failure with LPA2
When FEAT_LPA2 is enabled:
1. The DS bit is located at bit 32, not bit 59, when HCR_EL2.E2H = 0.
2. The root level of the page table should be -1 when
using a 52-bit address with a 4KB TxSZ and LPA2 feature is enabled.
However, the current implementation does not handle
these conditions correctly, causing EFI to fail
during boot when CPU is EL0&1 or EL0&2.
Fix this boot failure.
Fixes: 90771630bfe ("UefiCpuPkg/ArmMmuLib: Add support for LPA2")
Continuous-integration-options: PatchCheck.ignore-multi-package
Signed-off-by: Yeoreum Yun <[email protected]>
Compare: https://github.com/tianocore/edk2/compare/1c74842bd07a...c624a06aa3a9
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