[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 2
The attached patches provides part 2 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel
Linus Torvalds
parent
8e1a6dd2fd
commit
4bedea9454
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#
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# arch/xtensa/boot/Makefile
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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#
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CFLAGS += -fno-builtin -Iarch/$(ARCH)/boot/include
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HOSTFLAGS += -Iarch/$(ARCH)/boot/include
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BIG_ENDIAN := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
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export CFLAGS
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export AFLAGS
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export BIG_ENDIAN
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# Subdirs for the boot loader(s)
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bootdir-$(CONFIG_XTENSA_PLATFORM_ISS) += boot-elf
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bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf
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subdir-y := lib/
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subdir-y += boot-elf/ boot-redboot/
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zImage zImage.initrd Image Image.initrd: $(bootdir-y)
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$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
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$(addprefix $(obj)/,$(host-progs))
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$(Q)$(MAKE) $(build)=$(obj)/$@ $(MAKECMDGOALS)
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@ -0,0 +1,52 @@
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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GZIP = gzip
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GZIP_FLAGS = -v9fc
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ifeq ($(BIG_ENDIAN),1)
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OBJCOPY_ARGS := -O elf32-xtensa-be
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else
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OBJCOPY_ARGS := -O elf32-xtensa-le
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endif
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export OBJCOPY_ARGS
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boot-y := bootstrap.o
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OBJS := $(addprefix $(obj)/,$(boot-y))
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Image: vmlinux $(OBJS)
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$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
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vmlinux vmlinux.tmp
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$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
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--add-section image=vmlinux.tmp \
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--set-section-flags image=contents,alloc,load,load,data \
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$(OBJS) $@.tmp
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$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
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-T arch/$(ARCH)/boot/boot-elf/boot.ld \
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-o arch/$(ARCH)/boot/$@.elf $@.tmp
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rm -f $@.tmp vmlinux.tmp
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Image.initrd: vmlinux $(OBJS)
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$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
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--add-section .initrd=arch/$(ARCH)/boot/ramdisk \
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--set-section-flags .initrd=contents,alloc,load,load,data \
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vmlinux vmlinux.tmp
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$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
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--add-section image=vmlinux.tmp \
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--set-section-flags image=contents,alloc,load,load,data \
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$(OBJS) $@.tmp
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$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
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-T arch/$(ARCH)/boot/boot-elf/boot.ld \
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-o arch/$(ARCH)/boot/$@.elf $@.tmp
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rm -f $@.tmp vmlinux.tmp
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zImage: Image
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zImage.initrd: Image.initrd
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OUTPUT_ARCH(xtensa)
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SECTIONS
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{
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.start 0xD0000000 : { *(.start) }
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.text 0xD0000000:
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{
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__reloc_start = . ;
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_text_start = . ;
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*(.literal .text.literal .text)
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_text_end = . ;
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}
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.rodata ALIGN(0x04):
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{
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*(.rodata)
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*(.rodata1)
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}
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.data ALIGN(0x04):
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{
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*(.data)
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*(.data1)
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*(.sdata)
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*(.sdata2)
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*(.got.plt)
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*(.got)
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*(.dynamic)
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}
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__reloc_end = . ;
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.initrd ALIGN(0x10) :
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{
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boot_initrd_start = . ;
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*(.initrd)
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boot_initrd_end = .;
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}
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. = ALIGN(0x10);
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__image_load = . ;
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.image 0xd0001000:
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{
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_image_start = .;
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*(image)
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. = (. + 3) & ~ 3;
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_image_end = . ;
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}
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.bss ((LOADADDR(.image) + SIZEOF(.image) + 3) & ~ 3):
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{
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__bss_start = .;
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*(.sbss)
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*(.scommon)
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*(.dynbss)
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*(.bss)
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__bss_end = .;
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}
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_end = .;
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_param_start = .;
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.ResetVector.text 0xfe000020 :
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{
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*(.ResetVector.text)
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}
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PROVIDE (end = .);
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}
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@ -0,0 +1,37 @@
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#include <xtensa/config/specreg.h>
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#include <xtensa/config/core.h>
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#include <linux/config.h>
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#include <asm/bootparam.h>
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/* ResetVector
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*/
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.section .ResetVector.text, "ax"
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.global _ResetVector
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_ResetVector:
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_j reset
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.align 4
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RomInitAddr:
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.word 0xd0001000
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RomBootParam:
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.word _bootparam
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reset:
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l32r a0, RomInitAddr
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l32r a2, RomBootParam
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movi a3, 0
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movi a4, 0
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jx a0
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.align 4
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.section .bootstrap.data, "aw"
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.globl _bootparam
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_bootparam:
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.short BP_TAG_FIRST
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.short 4
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.long BP_VERSION
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.short BP_TAG_LAST
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.short 0
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.long 0
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@ -0,0 +1,35 @@
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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GZIP = gzip
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GZIP_FLAGS = -v9fc
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ifeq ($(BIG_ENDIAN),1)
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OBJCOPY_ARGS := -O elf32-xtensa-be
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else
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OBJCOPY_ARGS := -O elf32-xtensa-le
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endif
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LD_ARGS = -T $(obj)/boot.ld
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boot-y := bootstrap.o
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OBJS := $(addprefix $(obj)/,$(boot-y))
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LIBS := arch/$(ARCH)/boot/lib/lib.a arch/$(ARCH)/lib/lib.a
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LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
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zImage: vmlinux $(OBJS) $(LIBS)
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$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
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$(TOPDIR)/vmlinux vmlinux.tmp
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gzip -vf9 vmlinux.tmp
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$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
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--add-section image=vmlinux.tmp.gz \
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--set-section-flags image=contents,alloc,load,load,data \
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$(OBJS) $@.tmp
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$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
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$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/images/$@.redboot
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# rm -f $@.tmp $@.elf vmlinux.tmp.gz
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OUTPUT_ARCH(xtensa)
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SECTIONS
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{
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.start 0xD0200000 : { *(.start) }
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.text :
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{
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__reloc_start = . ;
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_text_start = . ;
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*(.literal .text.literal .text)
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_text_end = . ;
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}
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.rodata ALIGN(0x04):
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{
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*(.rodata)
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*(.rodata1)
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}
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.data ALIGN(0x04):
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{
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*(.data)
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*(.data1)
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*(.sdata)
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*(.sdata2)
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*(.got.plt)
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*(.got)
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*(.dynamic)
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}
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__reloc_end = . ;
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.initrd ALIGN(0x10) :
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{
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boot_initrd_start = . ;
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*(.initrd)
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boot_initrd_end = .;
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}
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. = ALIGN(0x10);
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__image_load = . ;
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.image 0xd0001000: AT(__image_load)
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{
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_image_start = .;
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*(image)
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. = (. + 3) & ~ 3;
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_image_end = . ;
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}
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.bss ((LOADADDR(.image) + SIZEOF(.image) + 3) & ~ 3):
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{
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__bss_start = .;
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*(.sbss)
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*(.scommon)
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*(.dynbss)
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*(.bss)
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__bss_end = .;
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}
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_end = .;
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_param_start = .;
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PROVIDE (end = .);
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}
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@ -0,0 +1,246 @@
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#define _ASMLANGUAGE
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#include <xtensa/config/specreg.h>
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#include <xtensa/config/core.h>
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#include <xtensa/cacheasm.h>
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/*
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* RB-Data: RedBoot data/bss
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* P: Boot-Parameters
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* L: Kernel-Loader
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*
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* The Linux-Kernel image including the loader must be loaded
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* to a position so that the kernel and the boot parameters
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* can fit in the space before the load address.
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* ______________________________________________________
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* |_RB-Data_|_P_|__________|_L_|___Linux-Kernel___|______|
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* ^
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* ^ Load address
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* ______________________________________________________
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* |___Linux-Kernel___|_P_|_L_|___________________________|
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*
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* The loader copies the parameter to the position that will
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* be the end of the kernel and itself to the end of the
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* parameter list.
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*/
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/* Make sure we have enough space for the 'uncompressor' */
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#define STACK_SIZE 32768
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#define HEAP_SIZE (131072*4)
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# a2: Parameter list
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# a3: Size of parameter list
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.section .start, "ax"
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.globl __start
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/* this must be the first byte of the loader! */
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__start:
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entry sp, 32 # we do not intend to return
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_call0 _start
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__start_a0:
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.align 4
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.section .text, "ax"
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.begin literal_prefix .text
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/* put literals in here! */
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.globl _start
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_start:
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/* 'reset' window registers */
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movi a4, 1
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wsr a4, PS
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rsync
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rsr a5, WINDOWBASE
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ssl a5
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sll a4, a4
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wsr a4, WINDOWSTART
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rsync
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movi a4, 0x00040000
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wsr a4, PS
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rsync
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/* copy the loader to its address
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* Note: The loader itself is a very small piece, so we assume we
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* don't partially overlap. We also assume (even more important)
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* that the kernel image is out of the way. Usually, when the
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* load address of this image is not at an arbitrary address,
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* but aligned to some 10K's we shouldn't overlap.
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*/
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/* Note: The assembler cannot relax "addi a0, a0, ..." to an
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l32r, so we load to a4 first. */
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addi a4, a0, __start - __start_a0
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mov a0, a4
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movi a4, __start
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movi a5, __reloc_end
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# a0: address where this code has been loaded
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# a4: compiled address of __start
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# a5: compiled end address
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mov.n a7, a0
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mov.n a8, a4
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1:
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l32i a10, a7, 0
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l32i a11, a7, 4
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s32i a10, a8, 0
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s32i a11, a8, 4
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l32i a10, a7, 8
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l32i a11, a7, 12
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s32i a10, a8, 8
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s32i a11, a8, 12
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addi a8, a8, 16
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addi a7, a7, 16
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blt a8, a5, 1b
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/* We have to flush and invalidate the caches here before we jump. */
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||||||
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#if XCHAL_DCACHE_IS_WRITEBACK
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dcache_writeback_all a5, a6
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#endif
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||||||
|
icache_invalidate_all a5, a6
|
||||||
|
|
||||||
|
movi a11, _reloc
|
||||||
|
jx a11
|
||||||
|
|
||||||
|
.globl _reloc
|
||||||
|
_reloc:
|
||||||
|
|
||||||
|
/* RedBoot is now at the end of the memory, so we don't have
|
||||||
|
* to copy the parameter list. Keep the code around; in case
|
||||||
|
* we need it again. */
|
||||||
|
#if 0
|
||||||
|
# a0: load address
|
||||||
|
# a2: start address of parameter list
|
||||||
|
# a3: length of parameter list
|
||||||
|
# a4: __start
|
||||||
|
|
||||||
|
/* copy the parameter list out of the way */
|
||||||
|
|
||||||
|
movi a6, _param_start
|
||||||
|
add a3, a2, a3
|
||||||
|
2:
|
||||||
|
l32i a8, a2, 0
|
||||||
|
s32i a8, a6, 0
|
||||||
|
addi a2, a2, 4
|
||||||
|
addi a6, a6, 4
|
||||||
|
blt a2, a3, 2b
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* clear BSS section */
|
||||||
|
movi a6, __bss_start
|
||||||
|
movi a7, __bss_end
|
||||||
|
movi.n a5, 0
|
||||||
|
3:
|
||||||
|
s32i a5, a6, 0
|
||||||
|
addi a6, a6, 4
|
||||||
|
blt a6, a7, 3b
|
||||||
|
|
||||||
|
movi a5, -16
|
||||||
|
movi a1, _stack + STACK_SIZE
|
||||||
|
and a1, a1, a5
|
||||||
|
|
||||||
|
/* Uncompress the kernel */
|
||||||
|
|
||||||
|
# a0: load address
|
||||||
|
# a2: boot parameter
|
||||||
|
# a4: __start
|
||||||
|
|
||||||
|
movi a3, __image_load
|
||||||
|
sub a4, a3, a4
|
||||||
|
add a8, a0, a4
|
||||||
|
|
||||||
|
# a1 Stack
|
||||||
|
# a8(a4) Load address of the image
|
||||||
|
|
||||||
|
movi a6, _image_start
|
||||||
|
movi a10, _image_end
|
||||||
|
movi a7, 0x1000000
|
||||||
|
sub a11, a10, a6
|
||||||
|
movi a9, complen
|
||||||
|
s32i a11, a9, 0
|
||||||
|
|
||||||
|
movi a0, 0
|
||||||
|
|
||||||
|
# a6 destination
|
||||||
|
# a7 maximum size of destination
|
||||||
|
# a8 source
|
||||||
|
# a9 ptr to length
|
||||||
|
|
||||||
|
.extern gunzip
|
||||||
|
movi a4, gunzip
|
||||||
|
beqz a4, 1f
|
||||||
|
|
||||||
|
callx4 a4
|
||||||
|
|
||||||
|
j 2f
|
||||||
|
|
||||||
|
|
||||||
|
# a6 destination start
|
||||||
|
# a7 maximum size of destination
|
||||||
|
# a8 source start
|
||||||
|
# a9 ptr to length
|
||||||
|
# a10 destination end
|
||||||
|
|
||||||
|
1:
|
||||||
|
l32i a9, a8, 0
|
||||||
|
l32i a11, a8, 4
|
||||||
|
s32i a9, a6, 0
|
||||||
|
s32i a11, a6, 4
|
||||||
|
l32i a9, a8, 8
|
||||||
|
l32i a11, a8, 12
|
||||||
|
s32i a9, a6, 8
|
||||||
|
s32i a11, a6, 12
|
||||||
|
addi a6, a6, 16
|
||||||
|
addi a8, a8, 16
|
||||||
|
blt a6, a10, 1b
|
||||||
|
|
||||||
|
|
||||||
|
/* jump to the kernel */
|
||||||
|
2:
|
||||||
|
#if XCHAL_DCACHE_IS_WRITEBACK
|
||||||
|
dcache_writeback_all a5, a6
|
||||||
|
#endif
|
||||||
|
icache_invalidate_all a5, a6
|
||||||
|
|
||||||
|
movi a5, __start
|
||||||
|
movi a3, boot_initrd_start
|
||||||
|
movi a4, boot_initrd_end
|
||||||
|
sub a3, a3, a5
|
||||||
|
sub a4, a4, a5
|
||||||
|
add a3, a0, a3
|
||||||
|
add a4, a0, a4
|
||||||
|
|
||||||
|
# a2 Boot parameter list
|
||||||
|
# a3 initrd_start (virtual load address)
|
||||||
|
# a4 initrd_end (virtual load address)
|
||||||
|
|
||||||
|
movi a0, _image_start
|
||||||
|
jx a0
|
||||||
|
|
||||||
|
.align 16
|
||||||
|
.data
|
||||||
|
.globl avail_ram
|
||||||
|
avail_ram:
|
||||||
|
.long _heap
|
||||||
|
.globl end_avail
|
||||||
|
end_avail:
|
||||||
|
.long _heap + HEAP_SIZE
|
||||||
|
|
||||||
|
.comm _stack, STACK_SIZE
|
||||||
|
.comm _heap, HEAP_SIZE
|
||||||
|
|
||||||
|
.globl end_avail
|
||||||
|
.comm complen, 4
|
||||||
|
|
||||||
|
.end literal_prefix
|
||||||
|
|
@ -0,0 +1,433 @@
|
||||||
|
/*
|
||||||
|
* BK Id: SCCS/s.zlib.h 1.8 05/18/01 15:17:23 cort
|
||||||
|
*/
|
||||||
|
/*
|
||||||
|
* This file is derived from zlib.h and zconf.h from the zlib-0.95
|
||||||
|
* distribution by Jean-loup Gailly and Mark Adler, with some additions
|
||||||
|
* by Paul Mackerras to aid in implementing Deflate compression and
|
||||||
|
* decompression for PPP packets.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* ==FILEVERSION 960122==
|
||||||
|
*
|
||||||
|
* This marker is used by the Linux installation script to determine
|
||||||
|
* whether an up-to-date version of this file is already installed.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* zlib.h -- interface of the 'zlib' general purpose compression library
|
||||||
|
version 0.95, Aug 16th, 1995.
|
||||||
|
|
||||||
|
Copyright (C) 1995 Jean-loup Gailly and Mark Adler
|
||||||
|
|
||||||
|
This software is provided 'as-is', without any express or implied
|
||||||
|
warranty. In no event will the authors be held liable for any damages
|
||||||
|
arising from the use of this software.
|
||||||
|
|
||||||
|
Permission is granted to anyone to use this software for any purpose,
|
||||||
|
including commercial applications, and to alter it and redistribute it
|
||||||
|
freely, subject to the following restrictions:
|
||||||
|
|
||||||
|
1. The origin of this software must not be misrepresented; you must not
|
||||||
|
claim that you wrote the original software. If you use this software
|
||||||
|
in a product, an acknowledgment in the product documentation would be
|
||||||
|
appreciated but is not required.
|
||||||
|
2. Altered source versions must be plainly marked as such, and must not be
|
||||||
|
misrepresented as being the original software.
|
||||||
|
3. This notice may not be removed or altered from any source distribution.
|
||||||
|
|
||||||
|
Jean-loup Gailly Mark Adler
|
||||||
|
gzip@prep.ai.mit.edu madler@alumni.caltech.edu
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _ZLIB_H
|
||||||
|
#define _ZLIB_H
|
||||||
|
|
||||||
|
/* #include "zconf.h" */ /* included directly here */
|
||||||
|
|
||||||
|
/* zconf.h -- configuration of the zlib compression library
|
||||||
|
* Copyright (C) 1995 Jean-loup Gailly.
|
||||||
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* From: zconf.h,v 1.12 1995/05/03 17:27:12 jloup Exp */
|
||||||
|
|
||||||
|
/*
|
||||||
|
The library does not install any signal handler. It is recommended to
|
||||||
|
add at least a handler for SIGSEGV when decompressing; the library checks
|
||||||
|
the consistency of the input data whenever possible but may go nuts
|
||||||
|
for some forms of corrupted input.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
|
||||||
|
* than 64k bytes at a time (needed on systems with 16-bit int).
|
||||||
|
* Compile with -DUNALIGNED_OK if it is OK to access shorts or ints
|
||||||
|
* at addresses which are not a multiple of their size.
|
||||||
|
* Under DOS, -DFAR=far or -DFAR=__far may be needed.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef STDC
|
||||||
|
# if defined(MSDOS) || defined(__STDC__) || defined(__cplusplus)
|
||||||
|
# define STDC
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef __MWERKS__ /* Metrowerks CodeWarrior declares fileno() in unix.h */
|
||||||
|
# include <unix.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Maximum value for memLevel in deflateInit2 */
|
||||||
|
#ifndef MAX_MEM_LEVEL
|
||||||
|
# ifdef MAXSEG_64K
|
||||||
|
# define MAX_MEM_LEVEL 8
|
||||||
|
# else
|
||||||
|
# define MAX_MEM_LEVEL 9
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifndef FAR
|
||||||
|
# define FAR
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* Maximum value for windowBits in deflateInit2 and inflateInit2 */
|
||||||
|
#ifndef MAX_WBITS
|
||||||
|
# define MAX_WBITS 15 /* 32K LZ77 window */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* The memory requirements for deflate are (in bytes):
|
||||||
|
1 << (windowBits+2) + 1 << (memLevel+9)
|
||||||
|
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
|
||||||
|
plus a few kilobytes for small objects. For example, if you want to reduce
|
||||||
|
the default memory requirements from 256K to 128K, compile with
|
||||||
|
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
|
||||||
|
Of course this will generally degrade compression (there's no free lunch).
|
||||||
|
|
||||||
|
The memory requirements for inflate are (in bytes) 1 << windowBits
|
||||||
|
that is, 32K for windowBits=15 (default value) plus a few kilobytes
|
||||||
|
for small objects.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* Type declarations */
|
||||||
|
|
||||||
|
#ifndef OF /* function prototypes */
|
||||||
|
# ifdef STDC
|
||||||
|
# define OF(args) args
|
||||||
|
# else
|
||||||
|
# define OF(args) ()
|
||||||
|
# endif
|
||||||
|
#endif
|
||||||
|
|
||||||
|
typedef unsigned char Byte; /* 8 bits */
|
||||||
|
typedef unsigned int uInt; /* 16 bits or more */
|
||||||
|
typedef unsigned long uLong; /* 32 bits or more */
|
||||||
|
|
||||||
|
typedef Byte FAR Bytef;
|
||||||
|
typedef char FAR charf;
|
||||||
|
typedef int FAR intf;
|
||||||
|
typedef uInt FAR uIntf;
|
||||||
|
typedef uLong FAR uLongf;
|
||||||
|
|
||||||
|
#ifdef STDC
|
||||||
|
typedef void FAR *voidpf;
|
||||||
|
typedef void *voidp;
|
||||||
|
#else
|
||||||
|
typedef Byte FAR *voidpf;
|
||||||
|
typedef Byte *voidp;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* end of original zconf.h */
|
||||||
|
|
||||||
|
#define ZLIB_VERSION "0.95P"
|
||||||
|
|
||||||
|
/*
|
||||||
|
The 'zlib' compression library provides in-memory compression and
|
||||||
|
decompression functions, including integrity checks of the uncompressed
|
||||||
|
data. This version of the library supports only one compression method
|
||||||
|
(deflation) but other algorithms may be added later and will have the same
|
||||||
|
stream interface.
|
||||||
|
|
||||||
|
For compression the application must provide the output buffer and
|
||||||
|
may optionally provide the input buffer for optimization. For decompression,
|
||||||
|
the application must provide the input buffer and may optionally provide
|
||||||
|
the output buffer for optimization.
|
||||||
|
|
||||||
|
Compression can be done in a single step if the buffers are large
|
||||||
|
enough (for example if an input file is mmap'ed), or can be done by
|
||||||
|
repeated calls of the compression function. In the latter case, the
|
||||||
|
application must provide more input and/or consume the output
|
||||||
|
(providing more output space) before each call.
|
||||||
|
*/
|
||||||
|
|
||||||
|
typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
|
||||||
|
typedef void (*free_func) OF((voidpf opaque, voidpf address, uInt nbytes));
|
||||||
|
|
||||||
|
struct internal_state;
|
||||||
|
|
||||||
|
typedef struct z_stream_s {
|
||||||
|
Bytef *next_in; /* next input byte */
|
||||||
|
uInt avail_in; /* number of bytes available at next_in */
|
||||||
|
uLong total_in; /* total nb of input bytes read so far */
|
||||||
|
|
||||||
|
Bytef *next_out; /* next output byte should be put there */
|
||||||
|
uInt avail_out; /* remaining free space at next_out */
|
||||||
|
uLong total_out; /* total nb of bytes output so far */
|
||||||
|
|
||||||
|
char *msg; /* last error message, NULL if no error */
|
||||||
|
struct internal_state FAR *state; /* not visible by applications */
|
||||||
|
|
||||||
|
alloc_func zalloc; /* used to allocate the internal state */
|
||||||
|
free_func zfree; /* used to free the internal state */
|
||||||
|
voidp opaque; /* private data object passed to zalloc and zfree */
|
||||||
|
|
||||||
|
Byte data_type; /* best guess about the data type: ascii or binary */
|
||||||
|
|
||||||
|
} z_stream;
|
||||||
|
|
||||||
|
/*
|
||||||
|
The application must update next_in and avail_in when avail_in has
|
||||||
|
dropped to zero. It must update next_out and avail_out when avail_out
|
||||||
|
has dropped to zero. The application must initialize zalloc, zfree and
|
||||||
|
opaque before calling the init function. All other fields are set by the
|
||||||
|
compression library and must not be updated by the application.
|
||||||
|
|
||||||
|
The opaque value provided by the application will be passed as the first
|
||||||
|
parameter for calls of zalloc and zfree. This can be useful for custom
|
||||||
|
memory management. The compression library attaches no meaning to the
|
||||||
|
opaque value.
|
||||||
|
|
||||||
|
zalloc must return Z_NULL if there is not enough memory for the object.
|
||||||
|
On 16-bit systems, the functions zalloc and zfree must be able to allocate
|
||||||
|
exactly 65536 bytes, but will not be required to allocate more than this
|
||||||
|
if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
|
||||||
|
pointers returned by zalloc for objects of exactly 65536 bytes *must*
|
||||||
|
have their offset normalized to zero. The default allocation function
|
||||||
|
provided by this library ensures this (see zutil.c). To reduce memory
|
||||||
|
requirements and avoid any allocation of 64K objects, at the expense of
|
||||||
|
compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
|
||||||
|
|
||||||
|
The fields total_in and total_out can be used for statistics or
|
||||||
|
progress reports. After compression, total_in holds the total size of
|
||||||
|
the uncompressed data and may be saved for use in the decompressor
|
||||||
|
(particularly if the decompressor wants to decompress everything in
|
||||||
|
a single step).
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* constants */
|
||||||
|
|
||||||
|
#define Z_NO_FLUSH 0
|
||||||
|
#define Z_PARTIAL_FLUSH 1
|
||||||
|
#define Z_FULL_FLUSH 2
|
||||||
|
#define Z_SYNC_FLUSH 3 /* experimental: partial_flush + byte align */
|
||||||
|
#define Z_FINISH 4
|
||||||
|
#define Z_PACKET_FLUSH 5
|
||||||
|
/* See deflate() below for the usage of these constants */
|
||||||
|
|
||||||
|
#define Z_OK 0
|
||||||
|
#define Z_STREAM_END 1
|
||||||
|
#define Z_ERRNO (-1)
|
||||||
|
#define Z_STREAM_ERROR (-2)
|
||||||
|
#define Z_DATA_ERROR (-3)
|
||||||
|
#define Z_MEM_ERROR (-4)
|
||||||
|
#define Z_BUF_ERROR (-5)
|
||||||
|
/* error codes for the compression/decompression functions */
|
||||||
|
|
||||||
|
#define Z_BEST_SPEED 1
|
||||||
|
#define Z_BEST_COMPRESSION 9
|
||||||
|
#define Z_DEFAULT_COMPRESSION (-1)
|
||||||
|
/* compression levels */
|
||||||
|
|
||||||
|
#define Z_FILTERED 1
|
||||||
|
#define Z_HUFFMAN_ONLY 2
|
||||||
|
#define Z_DEFAULT_STRATEGY 0
|
||||||
|
|
||||||
|
#define Z_BINARY 0
|
||||||
|
#define Z_ASCII 1
|
||||||
|
#define Z_UNKNOWN 2
|
||||||
|
/* Used to set the data_type field */
|
||||||
|
|
||||||
|
#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
|
||||||
|
|
||||||
|
extern char *zlib_version;
|
||||||
|
/* The application can compare zlib_version and ZLIB_VERSION for consistency.
|
||||||
|
If the first character differs, the library code actually used is
|
||||||
|
not compatible with the zlib.h header file used by the application.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* basic functions */
|
||||||
|
|
||||||
|
extern int inflateInit OF((z_stream *strm));
|
||||||
|
/*
|
||||||
|
Initializes the internal stream state for decompression. The fields
|
||||||
|
zalloc and zfree must be initialized before by the caller. If zalloc and
|
||||||
|
zfree are set to Z_NULL, inflateInit updates them to use default allocation
|
||||||
|
functions.
|
||||||
|
|
||||||
|
inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
|
||||||
|
enough memory. msg is set to null if there is no error message.
|
||||||
|
inflateInit does not perform any decompression: this will be done by
|
||||||
|
inflate().
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
extern int inflate OF((z_stream *strm, int flush));
|
||||||
|
/*
|
||||||
|
Performs one or both of the following actions:
|
||||||
|
|
||||||
|
- Decompress more input starting at next_in and update next_in and avail_in
|
||||||
|
accordingly. If not all input can be processed (because there is not
|
||||||
|
enough room in the output buffer), next_in is updated and processing
|
||||||
|
will resume at this point for the next call of inflate().
|
||||||
|
|
||||||
|
- Provide more output starting at next_out and update next_out and avail_out
|
||||||
|
accordingly. inflate() always provides as much output as possible
|
||||||
|
(until there is no more input data or no more space in the output buffer).
|
||||||
|
|
||||||
|
Before the call of inflate(), the application should ensure that at least
|
||||||
|
one of the actions is possible, by providing more input and/or consuming
|
||||||
|
more output, and updating the next_* and avail_* values accordingly.
|
||||||
|
The application can consume the uncompressed output when it wants, for
|
||||||
|
example when the output buffer is full (avail_out == 0), or after each
|
||||||
|
call of inflate().
|
||||||
|
|
||||||
|
If the parameter flush is set to Z_PARTIAL_FLUSH or Z_PACKET_FLUSH,
|
||||||
|
inflate flushes as much output as possible to the output buffer. The
|
||||||
|
flushing behavior of inflate is not specified for values of the flush
|
||||||
|
parameter other than Z_PARTIAL_FLUSH, Z_PACKET_FLUSH or Z_FINISH, but the
|
||||||
|
current implementation actually flushes as much output as possible
|
||||||
|
anyway. For Z_PACKET_FLUSH, inflate checks that once all the input data
|
||||||
|
has been consumed, it is expecting to see the length field of a stored
|
||||||
|
block; if not, it returns Z_DATA_ERROR.
|
||||||
|
|
||||||
|
inflate() should normally be called until it returns Z_STREAM_END or an
|
||||||
|
error. However if all decompression is to be performed in a single step
|
||||||
|
(a single call of inflate), the parameter flush should be set to
|
||||||
|
Z_FINISH. In this case all pending input is processed and all pending
|
||||||
|
output is flushed; avail_out must be large enough to hold all the
|
||||||
|
uncompressed data. (The size of the uncompressed data may have been saved
|
||||||
|
by the compressor for this purpose.) The next operation on this stream must
|
||||||
|
be inflateEnd to deallocate the decompression state. The use of Z_FINISH
|
||||||
|
is never required, but can be used to inform inflate that a faster routine
|
||||||
|
may be used for the single inflate() call.
|
||||||
|
|
||||||
|
inflate() returns Z_OK if some progress has been made (more input
|
||||||
|
processed or more output produced), Z_STREAM_END if the end of the
|
||||||
|
compressed data has been reached and all uncompressed output has been
|
||||||
|
produced, Z_DATA_ERROR if the input data was corrupted, Z_STREAM_ERROR if
|
||||||
|
the stream structure was inconsistent (for example if next_in or next_out
|
||||||
|
was NULL), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR if no
|
||||||
|
progress is possible or if there was not enough room in the output buffer
|
||||||
|
when Z_FINISH is used. In the Z_DATA_ERROR case, the application may then
|
||||||
|
call inflateSync to look for a good compression block. */
|
||||||
|
|
||||||
|
|
||||||
|
extern int inflateEnd OF((z_stream *strm));
|
||||||
|
/*
|
||||||
|
All dynamically allocated data structures for this stream are freed.
|
||||||
|
This function discards any unprocessed input and does not flush any
|
||||||
|
pending output.
|
||||||
|
|
||||||
|
inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
|
||||||
|
was inconsistent. In the error case, msg may be set but then points to a
|
||||||
|
static string (which must not be deallocated).
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* advanced functions */
|
||||||
|
|
||||||
|
extern int inflateInit2 OF((z_stream *strm,
|
||||||
|
int windowBits));
|
||||||
|
/*
|
||||||
|
This is another version of inflateInit with more compression options. The
|
||||||
|
fields next_out, zalloc and zfree must be initialized before by the caller.
|
||||||
|
|
||||||
|
The windowBits parameter is the base two logarithm of the maximum window
|
||||||
|
size (the size of the history buffer). It should be in the range 8..15 for
|
||||||
|
this version of the library (the value 16 will be allowed soon). The
|
||||||
|
default value is 15 if inflateInit is used instead. If a compressed stream
|
||||||
|
with a larger window size is given as input, inflate() will return with
|
||||||
|
the error code Z_DATA_ERROR instead of trying to allocate a larger window.
|
||||||
|
|
||||||
|
If next_out is not null, the library will use this buffer for the history
|
||||||
|
buffer; the buffer must either be large enough to hold the entire output
|
||||||
|
data, or have at least 1<<windowBits bytes. If next_out is null, the
|
||||||
|
library will allocate its own buffer (and leave next_out null). next_in
|
||||||
|
need not be provided here but must be provided by the application for the
|
||||||
|
next call of inflate().
|
||||||
|
|
||||||
|
If the history buffer is provided by the application, next_out must
|
||||||
|
never be changed by the application since the decompressor maintains
|
||||||
|
history information inside this buffer from call to call; the application
|
||||||
|
can only reset next_out to the beginning of the history buffer when
|
||||||
|
avail_out is zero and all output has been consumed.
|
||||||
|
|
||||||
|
inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was
|
||||||
|
not enough memory, Z_STREAM_ERROR if a parameter is invalid (such as
|
||||||
|
windowBits < 8). msg is set to null if there is no error message.
|
||||||
|
inflateInit2 does not perform any decompression: this will be done by
|
||||||
|
inflate().
|
||||||
|
*/
|
||||||
|
|
||||||
|
extern int inflateSync OF((z_stream *strm));
|
||||||
|
/*
|
||||||
|
Skips invalid compressed data until the special marker (see deflate()
|
||||||
|
above) can be found, or until all available input is skipped. No output
|
||||||
|
is provided.
|
||||||
|
|
||||||
|
inflateSync returns Z_OK if the special marker has been found, Z_BUF_ERROR
|
||||||
|
if no more input was provided, Z_DATA_ERROR if no marker has been found,
|
||||||
|
or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
|
||||||
|
case, the application may save the current current value of total_in which
|
||||||
|
indicates where valid compressed data was found. In the error case, the
|
||||||
|
application may repeatedly call inflateSync, providing more input each time,
|
||||||
|
until success or end of the input data.
|
||||||
|
*/
|
||||||
|
|
||||||
|
extern int inflateReset OF((z_stream *strm));
|
||||||
|
/*
|
||||||
|
This function is equivalent to inflateEnd followed by inflateInit,
|
||||||
|
but does not free and reallocate all the internal decompression state.
|
||||||
|
The stream will keep attributes that may have been set by inflateInit2.
|
||||||
|
|
||||||
|
inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
|
||||||
|
stream state was inconsistent (such as zalloc or state being NULL).
|
||||||
|
*/
|
||||||
|
|
||||||
|
extern int inflateIncomp OF((z_stream *strm));
|
||||||
|
/*
|
||||||
|
This function adds the data at next_in (avail_in bytes) to the output
|
||||||
|
history without performing any output. There must be no pending output,
|
||||||
|
and the decompressor must be expecting to see the start of a block.
|
||||||
|
Calling this function is equivalent to decompressing a stored block
|
||||||
|
containing the data at next_in (except that the data is not output).
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* checksum functions */
|
||||||
|
|
||||||
|
/*
|
||||||
|
This function is not related to compression but is exported
|
||||||
|
anyway because it might be useful in applications using the
|
||||||
|
compression library.
|
||||||
|
*/
|
||||||
|
|
||||||
|
extern uLong adler32 OF((uLong adler, Bytef *buf, uInt len));
|
||||||
|
|
||||||
|
/*
|
||||||
|
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
|
||||||
|
return the updated checksum. If buf is NULL, this function returns
|
||||||
|
the required initial value for the checksum.
|
||||||
|
An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
|
||||||
|
much faster. Usage example:
|
||||||
|
|
||||||
|
uLong adler = adler32(0L, Z_NULL, 0);
|
||||||
|
|
||||||
|
while (read_buffer(buffer, length) != EOF) {
|
||||||
|
adler = adler32(adler, buffer, length);
|
||||||
|
}
|
||||||
|
if (adler != original_adler) error();
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _Z_UTIL_H
|
||||||
|
struct internal_state {int dummy;}; /* hack for buggy compilers */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* _ZLIB_H */
|
||||||
|
|
@ -0,0 +1,6 @@
|
||||||
|
#
|
||||||
|
# Makefile for some libs needed by zImage.
|
||||||
|
#
|
||||||
|
|
||||||
|
|
||||||
|
lib-y := zlib.o zmem.o
|
||||||
|
|
@ -0,0 +1,36 @@
|
||||||
|
/*
|
||||||
|
* arch/xtensa/lib/memcpy.S
|
||||||
|
*
|
||||||
|
* ANSI C standard library function memcpy
|
||||||
|
*
|
||||||
|
* 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.
|
||||||
|
*
|
||||||
|
* Copyright (C) 2002 Tensilica Inc.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define _ASMLANGUAGE
|
||||||
|
#include <xtensa/config/core.h>
|
||||||
|
|
||||||
|
.text
|
||||||
|
.align 4
|
||||||
|
.global bcopy
|
||||||
|
.type bcopy,@function
|
||||||
|
bcopy:
|
||||||
|
movi a14, xthal_bcopy // a14 safe to use regardless of whether caller
|
||||||
|
// used call4 or call8 (can't have used call12)
|
||||||
|
jx a14 // let the Core HAL do the work
|
||||||
|
|
||||||
|
.text
|
||||||
|
.align 4
|
||||||
|
.global memcpy
|
||||||
|
.type memcpy,@function
|
||||||
|
memcpy:
|
||||||
|
.global memmove
|
||||||
|
.type memmove,@function
|
||||||
|
memmove:
|
||||||
|
movi a14, xthal_memcpy // a14 safe to use regardless of whether caller
|
||||||
|
// used call4 or call8 (can't have used call12)
|
||||||
|
jx a14 // let the Core HAL do the work
|
||||||
|
|
||||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,87 @@
|
||||||
|
#include "zlib.h"
|
||||||
|
|
||||||
|
/* bits taken from ppc */
|
||||||
|
|
||||||
|
extern void *avail_ram, *end_avail;
|
||||||
|
|
||||||
|
void exit (void)
|
||||||
|
{
|
||||||
|
for (;;);
|
||||||
|
}
|
||||||
|
|
||||||
|
void *zalloc(void *x, unsigned items, unsigned size)
|
||||||
|
{
|
||||||
|
void *p = avail_ram;
|
||||||
|
|
||||||
|
size *= items;
|
||||||
|
size = (size + 7) & -8;
|
||||||
|
avail_ram += size;
|
||||||
|
if (avail_ram > end_avail) {
|
||||||
|
//puts("oops... out of memory\n");
|
||||||
|
//pause();
|
||||||
|
exit ();
|
||||||
|
}
|
||||||
|
return p;
|
||||||
|
}
|
||||||
|
|
||||||
|
void zfree(void *x, void *addr, unsigned nb)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
#define HEAD_CRC 2
|
||||||
|
#define EXTRA_FIELD 4
|
||||||
|
#define ORIG_NAME 8
|
||||||
|
#define COMMENT 0x10
|
||||||
|
#define RESERVED 0xe0
|
||||||
|
|
||||||
|
#define DEFLATED 8
|
||||||
|
|
||||||
|
void gunzip (void *dst, int dstlen, unsigned char *src, int *lenp)
|
||||||
|
{
|
||||||
|
z_stream s;
|
||||||
|
int r, i, flags;
|
||||||
|
|
||||||
|
/* skip header */
|
||||||
|
|
||||||
|
i = 10;
|
||||||
|
flags = src[3];
|
||||||
|
if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
|
||||||
|
//puts("bad gzipped data\n");
|
||||||
|
exit();
|
||||||
|
}
|
||||||
|
if ((flags & EXTRA_FIELD) != 0)
|
||||||
|
i = 12 + src[10] + (src[11] << 8);
|
||||||
|
if ((flags & ORIG_NAME) != 0)
|
||||||
|
while (src[i++] != 0)
|
||||||
|
;
|
||||||
|
if ((flags & COMMENT) != 0)
|
||||||
|
while (src[i++] != 0)
|
||||||
|
;
|
||||||
|
if ((flags & HEAD_CRC) != 0)
|
||||||
|
i += 2;
|
||||||
|
if (i >= *lenp) {
|
||||||
|
//puts("gunzip: ran out of data in header\n");
|
||||||
|
exit();
|
||||||
|
}
|
||||||
|
|
||||||
|
s.zalloc = zalloc;
|
||||||
|
s.zfree = zfree;
|
||||||
|
r = inflateInit2(&s, -MAX_WBITS);
|
||||||
|
if (r != Z_OK) {
|
||||||
|
//puts("inflateInit2 returned "); puthex(r); puts("\n");
|
||||||
|
exit();
|
||||||
|
}
|
||||||
|
s.next_in = src + i;
|
||||||
|
s.avail_in = *lenp - i;
|
||||||
|
s.next_out = dst;
|
||||||
|
s.avail_out = dstlen;
|
||||||
|
r = inflate(&s, Z_FINISH);
|
||||||
|
if (r != Z_OK && r != Z_STREAM_END) {
|
||||||
|
//puts("inflate returned "); puthex(r); puts("\n");
|
||||||
|
exit();
|
||||||
|
}
|
||||||
|
*lenp = s.next_out - (unsigned char *) dst;
|
||||||
|
inflateEnd(&s);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
@ -0,0 +1,23 @@
|
||||||
|
#
|
||||||
|
# Makefile for a ramdisk image
|
||||||
|
#
|
||||||
|
|
||||||
|
BIG_ENDIAN := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
|
||||||
|
|
||||||
|
ifeq ($(BIG_ENDIAN),1)
|
||||||
|
OBJCOPY_ARGS := -O elf32-xtensa-be
|
||||||
|
else
|
||||||
|
OBJCOPY_ARGS := -O elf32-xtensa-le
|
||||||
|
endif
|
||||||
|
|
||||||
|
obj-y = ramdisk.o
|
||||||
|
|
||||||
|
RAMDISK_IMAGE = arch/$(ARCH)/boot/ramdisk/$(CONFIG_EMBEDDED_RAMDISK_IMAGE)
|
||||||
|
|
||||||
|
arch/$(ARCH)/boot/ramdisk/ramdisk.o:
|
||||||
|
$(Q)echo -e "dummy:" | $(AS) -o $@;
|
||||||
|
$(Q)$(OBJCOPY) $(OBJCOPY_ARGS) \
|
||||||
|
--add-section .initrd=$(RAMDISK_IMAGE) \
|
||||||
|
--set-section-flags .initrd=contents,alloc,load,load,data \
|
||||||
|
arch/$(ARCH)/boot/ramdisk/ramdisk.o $@
|
||||||
|
|
||||||
Loading…
Reference in New Issue