# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@free.fr>
# Date 1388442498 -3600
# Node ID 87ad9e82546df3ce0127d1046ec644b4486aa626
# Parent  3b61be3d7aa66c6363b07aa0a4964713cf84e86c
arch/arm: add support for AArch64

AArch64 id the 64-bit variant for ARM.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Zhenqiang Chen <zhenqiang.chen@linaro.org>
Cc: Michael Hope <michael.hope@linaro.org>

diff -r 3b61be3d7aa6 -r 87ad9e82546d config/arch/arm.in
--- a/config/arch/arm.in	Mon Dec 30 23:15:02 2013 +0100
+++ b/config/arch/arm.in	Mon Dec 30 23:28:18 2013 +0100
@@ -1,6 +1,7 @@
 # ARM specific configuration file
 
 ## select ARCH_SUPPORTS_32
+## select ARCH_SUPPORTS_64
 ## select ARCH_DEFAULT_32
 ## select ARCH_SUPPORTS_BOTH_MMU
 ## select ARCH_DEFAULT_HAS_MMU
@@ -9,9 +10,9 @@
 ## select ARCH_SUPPORTS_WITH_ARCH
 ## select ARCH_SUPPORTS_WITH_CPU
 ## select ARCH_SUPPORTS_WITH_TUNE
-## select ARCH_SUPPORTS_WITH_FLOAT
-## select ARCH_SUPPORTS_WITH_FPU
-## select ARCH_SUPPORTS_SOFTFP
+## select ARCH_SUPPORTS_WITH_FLOAT if ARCH_32
+## select ARCH_SUPPORTS_WITH_FPU if ARCH_32
+## select ARCH_SUPPORTS_SOFTFP if ARCH_32
 ##
 ## help The ARM architecture, as defined by:
 ## help     http://www.arm.com/
diff -r 3b61be3d7aa6 -r 87ad9e82546d scripts/build/arch/arm.sh
--- a/scripts/build/arch/arm.sh	Mon Dec 30 23:15:02 2013 +0100
+++ b/scripts/build/arch/arm.sh	Mon Dec 30 23:28:18 2013 +0100
@@ -2,7 +2,16 @@
 
 CT_DoArchTupleValues() {
     # The architecture part of the tuple:
-    CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_SUFFIX:-${target_endian_eb}}"
+    case "${CT_ARCH_BITNESS}" in
+        32)
+            CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_SUFFIX:-${target_endian_eb}}"
+            ;;
+        64)
+            # ARM 64 (aka AArch64) is special
+            [ "${CT_ARCH_BE}" = "y" ] && target_endian_eb="_be"
+            CT_TARGET_ARCH="aarch64${CT_ARCH_SUFFIX:-${target_endian_eb}}"
+            ;;
+    esac
 
     # The system part of the tuple:
     case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
diff -r 3b61be3d7aa6 -r 87ad9e82546d scripts/build/kernel/linux.sh
--- a/scripts/build/kernel/linux.sh	Mon Dec 30 23:15:02 2013 +0100
+++ b/scripts/build/kernel/linux.sh	Mon Dec 30 23:28:18 2013 +0100
@@ -110,6 +110,10 @@
     V_OPT="V=${CT_KERNEL_LINUX_VERBOSE_LEVEL}"
 
     kernel_arch="${CT_ARCH}"
+    case "${CT_ARCH}:${CT_ARCH_BITNESS}" in
+        # ARM 64 (aka AArch64) is special
+        arm:64) kernel_arch="arm64";;
+    esac
 
     CT_DoLog EXTRA "Installing kernel headers"
     CT_DoExecLog ALL                                    \