[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 <[e-mail]>
Acked-by: Sam Ravnborg <[e-mail]>

arch/cris/Makefile

···
 
 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 :=
···
 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-v10/vmlinux.lds.S

···
-/* ld script to make the Linux/CRIS kernel
- * Authors: Bjorn Wesen ([e-mail])
- *
- * It is VERY DANGEROUS to fiddle around with the symbols in this
- * script. It is for example quite vital that all generated sections
- * that are used are actually named here, otherwise the linker will
- * put them at the end, where the init stuff is which is FREED after
- * the kernel has booted. 
- */	
-
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/page.h>
-
-jiffies = jiffies_64;
-SECTIONS
-{
-	. = DRAM_VIRTUAL_BASE;
-	dram_start = .;
-	ibr_start = .;
-	. = . + 0x4000; /* see head.S and pages reserved at the start */
-
-	_text = .;                    /* Text and read-only data */
-	text_start = .;              /* lots of aliases */
-	_stext = .;
-	__stext = .;
-	.text : {
-		TEXT_TEXT
-		SCHED_TEXT
-		LOCK_TEXT
-		*(.fixup)
-		*(.text.__*)
-	}
-
-	_etext = . ;                  /* End of text section */ 
-	__etext = .;
-
-	. = ALIGN(4);                /* Exception table */
-  	__start___ex_table = .;
-  	__ex_table : { *(__ex_table) }
-  	__stop___ex_table = .;
-
-	RODATA
-
-	. = ALIGN (4);
-	___data_start = . ;
-	__Sdata = . ;
-	.data : {                     /* Data */
-		DATA_DATA
-	}
-	__edata = . ;                 /* End of data section */
-	_edata = . ;
-
-	. = ALIGN(PAGE_SIZE);	/* init_task and stack, must be aligned */
-  	.data.init_task : { *(.data.init_task) }
-
-	. = ALIGN(PAGE_SIZE);	/* Init code and data */
-  	__init_begin = .;
-	.init.text : { 
-		   _sinittext = .;
-		   INIT_TEXT
-		   _einittext = .;
-	}
-	.init.data : { INIT_DATA }
-  	. = ALIGN(16);
-  	__setup_start = .;
-  	.init.setup : { *(.init.setup) }
-  	__setup_end = .;
-  	.initcall.init : {
-		__initcall_start = .;
-		INITCALLS
-		__initcall_end = .;	
-	}
-
-	.con_initcall.init : {
-		__con_initcall_start = .;
-		*(.con_initcall.init)
-		__con_initcall_end = .;
-	}	
-	SECURITY_INIT
-
-#ifdef CONFIG_BLK_DEV_INITRD
-	.init.ramfs : {
-		__initramfs_start = .;
-		*(.init.ramfs)
-		__initramfs_end = .;
-	}
-#endif
-	__vmlinux_end = .;            /* last address of the physical file */
-
-	/*
-	 * We fill to the next page, so we can discard all init
-	 * pages without needing to consider what payload might be
-	 * appended to the kernel image.
-	 */
-	. = ALIGN(PAGE_SIZE);
-
-	__init_end = .;
-
-	__data_end = . ;              /* Move to _edata ? */
-	__bss_start = .;              /* BSS */
-	.bss : {
-		*(COMMON)
-		*(.bss)
-	}
-
-	. =  ALIGN (0x20);
-	_end = .;
-	__end = .;
-
-	/* Sections to be discarded */
-  	/DISCARD/ : {
-		EXIT_TEXT
-		EXIT_DATA
-		*(.exitcall.exit)
-        }
-
-	dram_end = dram_start + CONFIG_ETRAX_DRAM_SIZE*1024*1024;
-}

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

···
 	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:
 
···
 _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

···
  * 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>
···
 	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
···
 
 	.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

arch/cris/arch-v32/vmlinux.lds.S arch/cris/kernel/vmlinux.lds.S

···
  * the kernel has booted.
  */
 
+#include <linux/autoconf.h>
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/page.h>
 
···
 #define __CONFIG_ETRAX_VMEM_SIZE 0
 #endif
 
+
 jiffies = jiffies_64;
 SECTIONS
 {
 	. = DRAM_VIRTUAL_BASE;
 	dram_start = .;
+#ifdef CONFIG_ETRAX_ARCH_V10
+	ibr_start = .;
+#else
 	ebp_start = .;
-
 	/* The boot section is only necessary until the VCS top */
 	/* level testbench includes both flash and DRAM. */
 	.boot : { *(.boot) }
+#endif
 
-	/* See head.S and pages reserved at the start. */
+	/* see head.S and pages reserved at the start */
 	. = DRAM_VIRTUAL_BASE + 0x4000;
 
-	_text = .;		/* Text and read-only data. */
-	text_start = .;		/* Lots of aliases. */
+	_text = .;			/* Text and read-only data. */
+	text_start = .;			/* Lots of aliases. */
 	_stext = .;
 	__stext = .;
 	.text : {
···
 		*(.text.__*)
 	}
 
-	_etext = . ;		/* End of text section. */
+	_etext = . ;			/* End of text section. */
 	__etext = .;
 
-	. = ALIGN(4);		/* Exception table. */
+	. = ALIGN(4);			/* Exception table. */
 	__start___ex_table = .;
 	__ex_table : { *(__ex_table) }
 	__stop___ex_table = .;
···
 	. = ALIGN (4);
 	___data_start = . ;
 	__Sdata = . ;
-	.data : {                     /* Data */
+	.data : {			/* Data */
 		DATA_DATA
 	}
-	__edata = . ;		/* End of data section. */
+	__edata = . ;			/* End of data section. */
 	_edata = . ;
 
 	. = ALIGN(PAGE_SIZE);	/* init_task and stack, must be aligned. */
 	.data.init_task : { *(.data.init_task) }
 
-	. = ALIGN(PAGE_SIZE);	/* Init code and data. */
+	. = ALIGN(PAGE_SIZE);		/* Init code and data. */
 	__init_begin = .;
 	.init.text : {
 		   _sinittext = .;
···
 	__setup_start = .;
 	.init.setup : { *(.init.setup) }
 	__setup_end = .;
+#ifdef CONFIG_ETRAX_ARCH_V32
 	__start___param = .;
 	__param : { *(__param) }
 	__stop___param = .;
+#endif
 	.initcall.init : {
 		__initcall_start = .;
 		INITCALLS
···
 	}
 	SECURITY_INIT
 
-	__vmlinux_end = .;	/* Last address of the physical file. */
+#ifdef CONFIG_ETRAX_ARCH_V10
+#ifdef CONFIG_BLK_DEV_INITRD
+	.init.ramfs : {
+		__initramfs_start = .;
+		*(.init.ramfs)
+		__initramfs_end = .;
+	}
+#endif
+#endif
+	__vmlinux_end = .;		/* Last address of the physical file. */
+#ifdef CONFIG_ETRAX_ARCH_V32
 	PERCPU(PAGE_SIZE)
 
 	.init.ramfs : {
···
 		*(.init.ramfs)
 		__initramfs_end = .;
 	}
+#endif
 
 	/*
 	 * We fill to the next page, so we can discard all init
 	 * pages without needing to consider what payload might be
 	 * appended to the kernel image.
 	 */
-	. = ALIGN (PAGE_SIZE);
+	. = ALIGN(PAGE_SIZE);
 
 	__init_end = .;
 
-	__data_end = . ;	/* Move to _edata? */
-	__bss_start = .;	/* BSS. */
+	__data_end = . ;		/* Move to _edata ? */
+	__bss_start = .;		/* BSS. */
 	.bss : {
 		*(COMMON)
 		*(.bss)