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| author | Evan Lloyd <evan.lloyd@arm.com> | 2016-03-02 21:08:46 +0000 |
|---|---|---|
| committer | Leif Lindholm <leif.lindholm@linaro.org> | 2016-03-03 18:23:54 +0000 |
| commit | ff1f27c055c9dd78eb457bbf8cb7511060e3ee0b (patch) | |
| tree | 92eeb82298075755d7f13d32bd73196e182d4b19 /ArmPkg/Include | |
| parent | eea222ced0f8b40b2b02e9da31cca33ca6688faf (diff) | |
| download | edk2-ff1f27c055c9dd78eb457bbf8cb7511060e3ee0b.tar.gz edk2-ff1f27c055c9dd78eb457bbf8cb7511060e3ee0b.tar.bz2 edk2-ff1f27c055c9dd78eb457bbf8cb7511060e3ee0b.zip | |
ArmPkg: Configure TTBCR register
Architecturally, the TTBCR register value is undefined at reset for
Non-Secure.
On some platforms the reset value for TTBCR is not zero and
this causes a data abort exception once the MMU is enabled.
This patch configures the TTBCR register to enable translation table
walk using TTBR0.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Evan Lloyd <evan.lloyd@arm.com>
Diffstat (limited to 'ArmPkg/Include')
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index 85fa1f600b..15f610d82e 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -1,7 +1,7 @@ /** @file
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2011 - 2015, ARM Ltd. All rights reserved.<BR>
+ Copyright (c) 2011 - 2016, ARM Ltd. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -353,6 +353,12 @@ ArmSetTTBR0 ( IN VOID *TranslationTableBase
);
+VOID
+EFIAPI
+ArmSetTTBCR (
+ IN UINT32 Bits
+ );
+
VOID *
EFIAPI
ArmGetTTBR0BaseAddress (
|