[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 2

#

# arch/xtensa/boot/Makefile

#

# This file is subject to the terms and conditions of the GNU General Public

# License.  See the file "COPYING" in the main directory of this archive

# for more details.

#

#

CFLAGS 		+= -fno-builtin -Iarch/$(ARCH)/boot/include

HOSTFLAGS	+= -Iarch/$(ARCH)/boot/include

BIG_ENDIAN	:= $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)

export CFLAGS

export AFLAGS

export BIG_ENDIAN

# Subdirs for the boot loader(s)

bootdir-$(CONFIG_XTENSA_PLATFORM_ISS)	 += boot-elf

bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf

subdir-y	:= lib/

subdir-y	+= boot-elf/ boot-redboot/

zImage zImage.initrd Image Image.initrd: $(bootdir-y)

$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \

	      $(addprefix $(obj)/,$(host-progs))

	$(Q)$(MAKE) $(build)=$(obj)/$@ $(MAKECMDGOALS)

#

# This file is subject to the terms and conditions of the GNU General Public

# License.  See the file "COPYING" in the main directory of this archive

# for more details.

#

GZIP = gzip

GZIP_FLAGS = -v9fc

ifeq ($(BIG_ENDIAN),1)

OBJCOPY_ARGS    := -O elf32-xtensa-be

else

OBJCOPY_ARGS    := -O elf32-xtensa-le

endif

export OBJCOPY_ARGS

boot-y		:= bootstrap.o

OBJS		:= $(addprefix $(obj)/,$(boot-y))

Image:	vmlinux $(OBJS)

	$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \

		vmlinux vmlinux.tmp

	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \

		--add-section image=vmlinux.tmp \

		--set-section-flags image=contents,alloc,load,load,data \

		$(OBJS) $@.tmp

	$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \

		-T arch/$(ARCH)/boot/boot-elf/boot.ld \

		-o arch/$(ARCH)/boot/$@.elf $@.tmp

	rm -f $@.tmp vmlinux.tmp

Image.initrd:	vmlinux $(OBJS)

	$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \

		--add-section .initrd=arch/$(ARCH)/boot/ramdisk \

		--set-section-flags .initrd=contents,alloc,load,load,data \

		vmlinux vmlinux.tmp

	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \

		--add-section image=vmlinux.tmp \

		--set-section-flags image=contents,alloc,load,load,data \

		$(OBJS) $@.tmp

	$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \

		-T arch/$(ARCH)/boot/boot-elf/boot.ld \

		-o arch/$(ARCH)/boot/$@.elf $@.tmp

	rm -f $@.tmp vmlinux.tmp

zImage:	Image

zImage.initrd:	Image.initrd

OUTPUT_ARCH(xtensa)

SECTIONS

{

	.start 0xD0000000 : { *(.start) }

	.text 0xD0000000:

	{

		__reloc_start = . ;

		_text_start = . ;

		*(.literal .text.literal .text)

		_text_end = . ;

	}

	.rodata ALIGN(0x04):

	{

		*(.rodata)

		*(.rodata1)

	}

	.data ALIGN(0x04):

	{

		*(.data)

		*(.data1)

		*(.sdata)

		*(.sdata2)

		*(.got.plt)

		*(.got)

		*(.dynamic)

	}

	__reloc_end = . ;

	.initrd ALIGN(0x10) :

	{

		boot_initrd_start = . ;

		*(.initrd)

		boot_initrd_end = .;

	}

	. = ALIGN(0x10);

	__image_load = . ;

	.image 0xd0001000:

	{

		_image_start = .;

		*(image)

		. = (. + 3) & ~ 3;

		_image_end = .	;

	}

	.bss ((LOADADDR(.image) + SIZEOF(.image) + 3) & ~ 3):

	{

		__bss_start = .;

		*(.sbss)

		*(.scommon)

		*(.dynbss)

		*(.bss)

		__bss_end = .;

	}

	_end = .;

	_param_start = .;

	.ResetVector.text 0xfe000020 :

	{

		*(.ResetVector.text)

	}

	PROVIDE (end = .);

}

#include <xtensa/config/specreg.h>

#include <xtensa/config/core.h>

#include <linux/config.h>

#include <asm/bootparam.h>

/* ResetVector

 */

	.section        .ResetVector.text, "ax"

	.global         _ResetVector

_ResetVector:

	_j reset

	.align 4

RomInitAddr:

	.word 0xd0001000

RomBootParam:

	.word _bootparam

reset:

	l32r    a0, RomInitAddr

	l32r	a2, RomBootParam

	movi	a3, 0

	movi	a4, 0

	jx      a0

	.align 4

	.section .bootstrap.data, "aw"

	.globl _bootparam

_bootparam:

	.short	BP_TAG_FIRST

	.short	4

	.long	BP_VERSION

	.short	BP_TAG_LAST

	.short	0

	.long	0

#

# This file is subject to the terms and conditions of the GNU General Public

# License.  See the file "COPYING" in the main directory of this archive

# for more details.

#

GZIP = gzip

GZIP_FLAGS = -v9fc

ifeq ($(BIG_ENDIAN),1)

OBJCOPY_ARGS 	:= -O elf32-xtensa-be

else

OBJCOPY_ARGS 	:= -O elf32-xtensa-le

endif

LD_ARGS	= -T $(obj)/boot.ld

boot-y	:= bootstrap.o

OBJS	:= $(addprefix $(obj)/,$(boot-y))

LIBS	:= arch/$(ARCH)/boot/lib/lib.a arch/$(ARCH)/lib/lib.a

LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)

zImage: vmlinux $(OBJS) $(LIBS)

	$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \

		$(TOPDIR)/vmlinux vmlinux.tmp

	gzip -vf9 vmlinux.tmp

	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \

		--add-section image=vmlinux.tmp.gz \

		--set-section-flags image=contents,alloc,load,load,data \

		$(OBJS) $@.tmp

	$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)

	$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/images/$@.redboot

#	rm -f $@.tmp $@.elf vmlinux.tmp.gz