sh: Provide common CPU headers, prune the SH-2 and SH-2A directories.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index fb3b65e..fafc012 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -91,7 +91,6 @@
LDFLAGS += -EB
endif
-
head-y := arch/sh/kernel/init_task.o
head-$(CONFIG_SUPERH32) += arch/sh/kernel/head_32.o
head-$(CONFIG_SUPERH64) += arch/sh/kernel/head_64.o
@@ -134,11 +133,22 @@
# Companion chips
core-$(CONFIG_HD6446X_SERIES) += arch/sh/cchips/hd6446x/
-cpuincdir-$(CONFIG_CPU_SH2) := cpu-sh2
-cpuincdir-$(CONFIG_CPU_SH2A) := cpu-sh2a
-cpuincdir-$(CONFIG_CPU_SH3) := cpu-sh3
-cpuincdir-$(CONFIG_CPU_SH4) := cpu-sh4
-cpuincdir-$(CONFIG_CPU_SH5) := cpu-sh5
+#
+# CPU header paths
+#
+# These are ordered by optimization level. A CPU family that is a subset
+# of another (ie, SH-2A / SH-2), is picked up first, with increasing
+# levels of genericness if nothing more suitable is situated in the
+# hierarchy.
+#
+# As an example, in order of preference, SH-2A > SH-2 > common definitions.
+#
+cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
+cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
+cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
+cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
+cpuincdir-$(CONFIG_CPU_SH5) += cpu-sh5
+cpuincdir-y += cpu-common # Must be last
libs-$(CONFIG_SUPERH32) := arch/sh/lib/ $(libs-y)
libs-$(CONFIG_SUPERH64) := arch/sh/lib64/ $(libs-y)
@@ -149,8 +159,8 @@
boot := arch/sh/boot
-cflags-y += -Iarch/sh/include/$(cpuincdir-y)
-cflags-y += $(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
+cflags-y += $(foreach d, $(cpuincdir-y), -Iarch/sh/include/$(d)) \
+ $(foreach d, $(machdir-y), -Iarch/sh/include/$(d))
KBUILD_CFLAGS += -pipe $(cflags-y)
KBUILD_CPPFLAGS += $(cflags-y)