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From ab3d099133f84d59e02a572801659cf8b1145f72 Mon Sep 17 00:00:00 2001
From: Adrian Calianu <adrian.calianu@enea.com>
Date: Thu, 19 Feb 2015 09:24:22 +0100
Subject: [PATCH 1/1] Hierofalcon: Enable 32-bit EL0 with 64K and 4K page sizes
Hierofalcon is able to switch to aarch32 EL0 only with following setup:
- Page Size 64K - 42bit VA
- Page Size 4K - 48bit VA
Signed-off-by: Adrian Calianu <adrian.calianu@enea.com>
---
arch/arm64/Kconfig | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index d35a06c..68b4859 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -338,6 +338,7 @@ endchoice
choice
prompt "Virtual address space size"
default ARM64_VA_BITS_39 if ARM64_4K_PAGES
+ default ARM64_VA_BITS_48 if ARM64_4K_PAGES
default ARM64_VA_BITS_42 if ARM64_64K_PAGES
help
Allows choosing one of multiple possible virtual address
@@ -354,7 +355,7 @@ config ARM64_VA_BITS_42
config ARM64_VA_BITS_48
bool "48-bit"
- depends on !ARM_SMMU
+ depends on ARM64_4K_PAGES
endchoice
@@ -613,7 +614,7 @@ source "fs/Kconfig.binfmt"
config COMPAT
bool "Kernel support for 32-bit EL0"
- depends on !ARM64_64K_PAGES
+ depends on !ARM64_64K_PAGES || EXPERT
select COMPAT_BINFMT_ELF
select HAVE_UID16
select OLD_SIGSUSPEND3
--
1.9.1
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