[CRIS] Remove links from CRIS build

Remove the links to architecture and machine dependent directories
(boot, lib, drivers, arch, mach)

The links were created and used mostly from the arch/cris/Makefile,
so why not dispense with them altogether?
Changed $(ARCH) to "cris" in Makefile, it is easier to read this way.

The CRISv32 head.S common files for the kernel and compressed images
needed to be modified to use ifdefs instead of using the now removed
mach link. Since there are only two versions, this is not a huge loss
in readability.

The link to vmlinux.lds.S is also replaced with a merged version
which uses ifdefs to select the correct layout.
System.map before and after are identical.

Signed-off-by: Jesper Nilsson <[email protected]>
Acked-by: Sam Ravnborg <[email protected]>

arch/cris/Makefile

@@ -23,7 +23,8 @@ mach-$(CONFIG_ETRAXFS) := fs
 
 ifneq ($(arch-y),)
 SARCH := arch-$(arch-y)
-inc := -Iarch/cris/include/arch-$(arch-y) -Iarch/cris/include/arch-$(arch-y)/arch
+inc := -Iarch/cris/include/$(SARCH)
+inc += -Iarch/cris/include/$(SARCH)/arch
 else
 SARCH :=
 inc :=
@@ -52,72 +53,48 @@ KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
 KBUILD_CFLAGS += -fno-omit-frame-pointer
 endif
 
-head-y := arch/$(ARCH)/$(SARCH)/kernel/head.o
+head-y := arch/cris/$(SARCH)/kernel/head.o
 
 LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libgcc.a)
 
-core-y		+= arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
-core-y		+= arch/$(ARCH)/$(SARCH)/kernel/ arch/$(ARCH)/$(SARCH)/mm/
+core-y		+= arch/cris/kernel/ arch/cris/mm/
+core-y		+= arch/cris/$(SARCH)/kernel/ arch/cris/$(SARCH)/mm/
 ifdef CONFIG_ETRAX_ARCH_V32
-core-y		+= arch/$(ARCH)/$(SARCH)/$(MACH)/
+core-y		+= arch/cris/$(SARCH)/$(MACH)/
 endif
-drivers-y	+= arch/$(ARCH)/$(SARCH)/drivers/
-libs-y		+= arch/$(ARCH)/$(SARCH)/lib/ $(LIBGCC)
+drivers-y	+= arch/cris/$(SARCH)/drivers/
+libs-y		+= arch/cris/$(SARCH)/lib/ $(LIBGCC)
 
 # cris source path
-SRC_ARCH              = $(srctree)/arch/$(ARCH)
+SRC_ARCH              = $(srctree)/arch/cris
 # cris object files path
-OBJ_ARCH              = $(objtree)/arch/$(ARCH)
+OBJ_ARCH              = $(objtree)/arch/cris
 
-boot := arch/$(ARCH)/boot
-MACHINE := arch/$(ARCH)/$(SARCH)
+boot := arch/cris/$(SARCH)/boot
+MACHINE := arch/cris/$(SARCH)
 
 all: zImage
 
 zImage Image: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
 
-archprepare: $(SRC_ARCH)/.links FORCE
-
-# Create some links to make all tools happy
-$(SRC_ARCH)/.links:
-	@rm -rf $(SRC_ARCH)/drivers
-	@ln -sfn $(SARCH)/drivers $(SRC_ARCH)/drivers
-	@rm -rf $(SRC_ARCH)/boot
-	@ln -sfn $(SARCH)/boot $(SRC_ARCH)/boot
-	@rm -rf $(SRC_ARCH)/lib
-	@ln -sfn $(SARCH)/lib $(SRC_ARCH)/lib
-	@rm -f $(SRC_ARCH)/arch/mach
-	@rm -rf $(SRC_ARCH)/arch
-	@ln -sfn $(SARCH) $(SRC_ARCH)/arch
-ifdef CONFIG_ETRAX_ARCH_V32
-	@ln -sfn ../$(SARCH)/$(MACH) $(SRC_ARCH)/arch/mach
-endif
-	@rm -rf $(SRC_ARCH)/kernel/vmlinux.lds.S
-	@ln -sfn ../$(SARCH)/vmlinux.lds.S $(SRC_ARCH)/kernel/vmlinux.lds.S
-	@touch $@
+archprepare:
 
 archclean:
-	$(Q)if [ -e arch/$(ARCH)/boot ]; then \
-		$(MAKE) $(clean)=arch/$(ARCH)/boot; \
+	$(Q)if [ -e arch/cris/$(SARCH)/boot ]; then \
+		$(MAKE) $(clean)=arch/cris/$(SARCH)/boot; \
 	fi
 
 CLEAN_FILES += \
 	$(MACHINE)/boot/zImage \
 	$(MACHINE)/boot/compressed/decompress.bin \
 	$(MACHINE)/boot/compressed/piggy.gz \
-	$(MACHINE)/boot/rescue/rescue.bin \
-	$(SRC_ARCH)/.links
+	$(MACHINE)/boot/rescue/rescue.bin
 
-MRPROPER_FILES += \
-	$(SRC_ARCH)/drivers \
-	$(SRC_ARCH)/boot \
-	$(SRC_ARCH)/lib \
-	$(SRC_ARCH)/arch \
-	$(SRC_ARCH)/kernel/vmlinux.lds.S
 
+# MRPROPER_FILES +=
 
 define archhelp
-  echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
-  echo  '* Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
+  echo  '* zImage        - Compressed kernel image (arch/cris/boot/zImage)'
+  echo  '* Image         - Uncompressed kernel image (arch/cris/boot/Image)'
 endef

arch/cris/arch-v32/boot/compressed/head.S

@@ -28,7 +28,13 @@ _start:
 	beq	dram_init_finished
 	nop
 
-#include "../../mach/dram_init.S"
+#if defined CONFIG_ETRAXFS
+#include "../../mach-fs/dram_init.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../../mach-a3/dram_init.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif
 
 dram_init_finished:
 
@@ -130,4 +136,10 @@ _cmd_line_addr:
 _boot_source:
 	.dword 0
 
-#include "../../mach/hw_settings.S"
+#if defined CONFIG_ETRAXFS
+#include "../../mach-fs/hw_settings.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../../mach-a3/hw_settings.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif

arch/cris/arch-v32/kernel/head.S

@@ -10,8 +10,9 @@
  * The macros found in mmu_defs_asm.h uses the ## concatenation operator, so
  * -traditional must not be used when assembling this file.
  */
-#include <hwregs/reg_rdwr.h>
+#include <linux/autoconf.h>
 #include <arch/memmap.h>
+#include <hwregs/reg_rdwr.h>
 #include <hwregs/intr_vect.h>
 #include <hwregs/asm/mmu_defs_asm.h>
 #include <hwregs/asm/reg_map_asm.h>
@@ -217,7 +218,14 @@ _inflash:
 	beq	_dram_initialized
 	nop
 
-#include "../mach/dram_init.S"
+#if defined CONFIG_ETRAXFS
+#include "../mach-fs/dram_init.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../mach-a3/dram_init.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif
+
 
 _dram_initialized:
 	;; Copy the text and data section to DRAM. This depends on that the
@@ -472,4 +480,10 @@ swapper_pg_dir = 0xc0002000
 
 	.section ".init.data", "aw"
 
-#include "../mach/hw_settings.S"
+#if defined CONFIG_ETRAXFS
+#include "../mach-fs/hw_settings.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../mach-a3/hw_settings.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif