From a9da09b8646dac7ce2b85e9a216f1566defc2196 Mon Sep 17 00:00:00 2001
From: Doug Goldstein <cardoe@cardoe.com>
Date: Wed, 20 Jan 2016 15:47:59 -0600
Subject: [PATCH] arm: clean up build variables

This consolidates some of the different variables used for the ARM
builds. This change was prompted by the Kconfig changes but looking back
in time the CONFIG_ARM_{32,64} variables existed before Kconfig so this
should just be a generic cleanup.

Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
[ ijc -- switch from ifdef X to ifeq (X,y) in one place as discussed ]
---
 xen/arch/arm/Makefile            |  8 ++++----
 xen/arch/arm/Rules.mk            | 18 ++++--------------
 xen/drivers/passthrough/Makefile |  2 +-
 3 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
index 2f050f5714..9982a9307d 100644
--- a/xen/arch/arm/Makefile
+++ b/xen/arch/arm/Makefile
@@ -1,7 +1,7 @@
-subdir-$(arm32) += arm32
-subdir-$(arm64) += arm64
+subdir-$(CONFIG_ARM_32) += arm32
+subdir-$(CONFIG_ARM_64) += arm64
 subdir-y += platforms
-subdir-$(arm64) += efi
+subdir-$(CONFIG_ARM_64) += efi
 
 obj-$(EARLY_PRINTK) += early_printk.o
 obj-y += cpu.o
@@ -52,7 +52,7 @@ ALL_OBJS := $(TARGET_SUBARCH)/head.o $(ALL_OBJS)
 
 $(TARGET): $(TARGET)-syms $(TARGET).axf
 	$(OBJCOPY) -O binary -S $< $@
-ifeq (arm64,$(XEN_TARGET_ARCH))
+ifeq ($(CONFIG_ARM_64),y)
 	ln -sf $(notdir $@)  ../../$(notdir $@).efi
 endif
 
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index 4947e64110..0aea28289a 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -11,22 +11,12 @@ CFLAGS += -I$(BASEDIR)/include
 $(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
 $(call cc-option-add,CFLAGS,CC,-Wnested-externs)
 
-arm := y
-
-ifeq ($(TARGET_SUBARCH),arm32)
 # Prevent floating-point variables from creeping into Xen.
-CFLAGS += -msoft-float
-CFLAGS += -mcpu=cortex-a15
-arm32 := y
-arm64 := n
-endif
+CFLAGS-$(CONFIG_ARM_32) += -msoft-float
+CFLAGS-$(CONFIG_ARM_32) += -mcpu=cortex-a15
 
-ifeq ($(TARGET_SUBARCH),arm64)
-CFLAGS += -mcpu=generic
-CFLAGS += -mgeneral-regs-only # No fp registers etc
-arm32 := n
-arm64 := y
-endif
+CFLAGS-$(CONFIG_ARM_64) += -mcpu=generic
+CFLAGS-$(CONFIG_ARM_64) += -mgeneral-regs-only # No fp registers etc
 
 ifneq ($(call cc-option,$(CC),-fvisibility=hidden,n),n)
 CFLAGS += -DGCC_HAS_VISIBILITY_ATTRIBUTE
diff --git a/xen/drivers/passthrough/Makefile b/xen/drivers/passthrough/Makefile
index ca84e36a37..6087333a34 100644
--- a/xen/drivers/passthrough/Makefile
+++ b/xen/drivers/passthrough/Makefile
@@ -1,7 +1,7 @@
 subdir-$(CONFIG_X86) += vtd
 subdir-$(CONFIG_X86) += amd
 subdir-$(CONFIG_X86) += x86
-subdir-$(arm) += arm
+subdir-$(CONFIG_ARM) += arm
 
 obj-y += iommu.o
 obj-$(CONFIG_X86) += io.o
-- 
2.39.5