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-rw-r--r--arch/arm/Kconfig37
1 files changed, 36 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3cfd82a05b2..5959e36c3b4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -180,6 +180,7 @@ config ARCH_OMAP
config ARCH_VERSATILE
bool "Versatile"
select ARM_AMBA
+ select ARM_VIC
select ICST307
help
This enables support for ARM Ltd Versatile board.
@@ -400,6 +401,38 @@ config NO_IDLE_HZ
Currently at least OMAP, PXA2xx and SA11x0 platforms are known
to have accurate timekeeping with dynamic tick.
+config AEABI
+ bool "Use the ARM EABI to compile the kernel"
+ help
+ This option allows for the kernel to be compiled using the latest
+ ARM ABI (aka EABI). This is only useful if you are using a user
+ space environment that is also compiled with EABI.
+
+ Since there are major incompatibilities between the legacy ABI and
+ EABI, especially with regard to structure member alignment, this
+ option also changes the kernel syscall calling convention to
+ disambiguate both ABIs and allow for backward compatibility support
+ (selected with CONFIG_OABI_COMPAT).
+
+ To use this you need GCC version 4.0.0 or later.
+
+config OABI_COMPAT
+ bool "Allow old ABI binaries to run with this kernel"
+ depends on AEABI
+ default y
+ help
+ This option preserves the old syscall interface along with the
+ new (ARM EABI) one. It also provides a compatibility layer to
+ intercept syscalls that have structure arguments which layout
+ in memory differs between the legacy ABI and the new ARM EABI
+ (only for non "thumb" binaries). This option adds a tiny
+ overhead to all syscalls and produces a slightly larger kernel.
+ If you know you'll be using only pure EABI user space then you
+ can say N here. If this option is not selected and you attempt
+ to execute a legacy ABI binary then the result will be
+ UNPREDICTABLE (in fact it can be predicted that it won't work
+ at all). If in doubt say Y.
+
config ARCH_DISCONTIGMEM_ENABLE
bool
default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
@@ -586,6 +619,7 @@ comment "At least one emulation must be selected"
config FPE_NWFPE
bool "NWFPE math emulation"
+ depends on !AEABI || OABI_COMPAT
---help---
Say Y to include the NWFPE floating point emulator in the kernel.
This is necessary to run most binaries. Linux does not currently
@@ -609,7 +643,7 @@ config FPE_NWFPE_XP
config FPE_FASTFPE
bool "FastFPE math emulation (EXPERIMENTAL)"
- depends on !CPU_32v3 && EXPERIMENTAL
+ depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
---help---
Say Y here to include the FAST floating point emulator in the kernel.
This is an experimental much faster emulator which now also has full
@@ -641,6 +675,7 @@ source "fs/Kconfig.binfmt"
config ARTHUR
tristate "RISC OS personality"
+ depends on !AEABI
help
Say Y here to include the kernel code necessary if you want to run
Acorn RISC OS/Arthur binaries under Linux. This code is still very