forked from Minki/linux
h8300: add zImage support
h8300 zImage target support. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yoshinori Sato
Linus Torvalds
parent
c728d60455
commit
97a572b3b8
@ -1,12 +1,22 @@
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# arch/h8300/boot/Makefile
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targets := vmlinux.srec vmlinux.bin
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targets := vmlinux.srec vmlinux.bin zImage
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subdir- := compressed
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OBJCOPYFLAGS_vmlinux.srec := -Osrec
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OBJCOPYFLAGS_vmlinux.bin := -Obinary
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OBJCOPYFLAGS_zImage := -O binary -R .note -R .comment -R .stab -R .stabstr -S
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$(obj)/vmlinux.srec $(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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@echo ' Kernel: $@ is ready'
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$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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@echo 'Kernel: $@ is ready'
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$(obj)/compressed/vmlinux: FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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CLEAN_FILES += arch/$(ARCH)/vmlinux.bin arch/$(ARCH)/vmlinux.srec
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37
arch/h8300/boot/compressed/Makefile
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37
arch/h8300/boot/compressed/Makefile
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@ -0,0 +1,37 @@
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#
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# linux/arch/sh/boot/compressed/Makefile
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#
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# create a compressed vmlinux image from the original vmlinux
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#
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targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
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EXTRA_AFLAGS := -traditional
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OBJECTS = $(obj)/head.o $(obj)/misc.o
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#
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# IMAGE_OFFSET is the load offset of the compression loader
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# Assign dummy values if these 2 variables are not defined,
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# in order to suppress error message.
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#
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CONFIG_MEMORY_START ?= 0x00400000
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CONFIG_BOOT_LINK_OFFSET ?= 0x00400000
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IMAGE_OFFSET := $(shell printf "0x%08x" $$[$(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)])
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LDFLAGS_vmlinux := -T $(obj)/vmlinux.lds
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$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
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$(call if_changed,ld)
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@:
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$(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
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$(call if_changed,gzip)
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LDFLAGS_piggy.o := -r --format binary --oformat elf32-h8300 -T
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OBJCOPYFLAGS := -O binary
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$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
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$(call if_changed,ld)
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47
arch/h8300/boot/compressed/head.S
Normal file
47
arch/h8300/boot/compressed/head.S
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@ -0,0 +1,47 @@
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/*
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* linux/arch/h8300/boot/compressed/head.S
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*
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* Copyright (C) 2006 Yoshinori Sato
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*/
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.h8300h
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#include <linux/linkage.h>
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#define SRAM_START 0xff4000
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.section .text.startup
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.global startup
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startup:
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mov.l #SRAM_START+0x8000, sp
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mov.l #__sbss, er0
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mov.l #__ebss, er1
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sub.l er0, er1
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shlr er1
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shlr er1
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sub.l er2, er2
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1:
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mov.l er2, @er0
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adds #4, er0
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dec.l #1, er1
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bne 1b
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jsr @_decompress_kernel
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jmp @0x400000
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.align 9
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fake_headers_as_bzImage:
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.word 0
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.ascii "HdrS" ; header signature
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.word 0x0202 ; header version number (>= 0x0105)
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; or else old loadlin-1.5 will fail)
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.word 0 ; default_switch
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.word 0 ; SETUPSEG
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.word 0x1000
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.word 0 ; pointing to kernel version string
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.byte 0 ; = 0, old one (LILO, Loadlin,
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; 0xTV: T=0 for LILO
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; V = version
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.byte 1 ; Load flags bzImage=1
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.word 0x8000 ; size to move, when setup is not
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.long 0x100000 ; 0x100000 = default for big kernel
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.long 0 ; address of loaded ramdisk image
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.long 0 ; its size in bytes
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219
arch/h8300/boot/compressed/misc.c
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219
arch/h8300/boot/compressed/misc.c
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@ -0,0 +1,219 @@
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/*
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* arch/h8300/boot/compressed/misc.c
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*
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* This is a collection of several routines from gzip-1.0.3
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* adapted for Linux.
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*
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* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
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*
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* Adapted for h8300 by Yoshinori Sato 2006
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*/
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#include <asm/uaccess.h>
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/*
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* gzip declarations
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*/
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#define OF(args) args
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#define STATIC static
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#undef memset
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#undef memcpy
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#define memzero(s, n) memset ((s), 0, (n))
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typedef unsigned char uch;
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typedef unsigned short ush;
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typedef unsigned long ulg;
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#define WSIZE 0x8000 /* Window size must be at least 32k, */
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/* and a power of two */
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static uch *inbuf; /* input buffer */
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static uch window[WSIZE]; /* Sliding window buffer */
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static unsigned insize = 0; /* valid bytes in inbuf */
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static unsigned inptr = 0; /* index of next byte to be processed in inbuf */
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static unsigned outcnt = 0; /* bytes in output buffer */
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/* gzip flag byte */
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#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
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#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
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#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
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#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
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#define COMMENT 0x10 /* bit 4 set: file comment present */
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#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
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#define RESERVED 0xC0 /* bit 6,7: reserved */
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#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
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/* Diagnostic functions */
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#ifdef DEBUG
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# define Assert(cond,msg) {if(!(cond)) error(msg);}
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# define Trace(x) fprintf x
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# define Tracev(x) {if (verbose) fprintf x ;}
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# define Tracevv(x) {if (verbose>1) fprintf x ;}
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# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
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# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
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#else
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# define Assert(cond,msg)
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# define Trace(x)
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# define Tracev(x)
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# define Tracevv(x)
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# define Tracec(c,x)
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# define Tracecv(c,x)
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#endif
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static int fill_inbuf(void);
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static void flush_window(void);
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static void error(char *m);
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static void gzip_mark(void **);
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static void gzip_release(void **);
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extern char input_data[];
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extern int input_len;
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static long bytes_out = 0;
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static uch *output_data;
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static unsigned long output_ptr = 0;
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static void *malloc(int size);
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static void free(void *where);
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static void error(char *m);
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static void gzip_mark(void **);
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static void gzip_release(void **);
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int puts(const char *);
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extern int _text; /* Defined in vmlinux.lds.S */
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extern int _end;
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static unsigned long free_mem_ptr;
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static unsigned long free_mem_end_ptr;
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#define HEAP_SIZE 0x10000
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#include "../../../../lib/inflate.c"
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#define SCR *((volatile unsigned char *)0xffff8a)
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#define TDR *((volatile unsigned char *)0xffff8b)
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#define SSR *((volatile unsigned char *)0xffff8c)
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static void *malloc(int size)
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{
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void *p;
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if (size <0) error("Malloc error");
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if (free_mem_ptr == 0) error("Memory error");
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free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
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p = (void *)free_mem_ptr;
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free_mem_ptr += size;
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if (free_mem_ptr >= free_mem_end_ptr)
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error("Out of memory");
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return p;
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}
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static void free(void *where)
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{ /* Don't care */
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}
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static void gzip_mark(void **ptr)
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{
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*ptr = (void *) free_mem_ptr;
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}
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static void gzip_release(void **ptr)
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{
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free_mem_ptr = (long) *ptr;
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}
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int puts(const char *s)
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{
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return 0;
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}
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void* memset(void* s, int c, size_t n)
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{
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int i;
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char *ss = (char*)s;
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for (i=0;i<n;i++) ss[i] = c;
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return s;
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}
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void* memcpy(void* __dest, __const void* __src,
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size_t __n)
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{
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int i;
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char *d = (char *)__dest, *s = (char *)__src;
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for (i=0;i<__n;i++) d[i] = s[i];
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return __dest;
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}
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/* ===========================================================================
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* Fill the input buffer. This is called only when the buffer is empty
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* and at least one byte is really needed.
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*/
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static int fill_inbuf(void)
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{
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if (insize != 0) {
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error("ran out of input data");
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}
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inbuf = input_data;
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insize = input_len;
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inptr = 1;
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return inbuf[0];
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}
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/* ===========================================================================
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* Write the output window window[0..outcnt-1] and update crc and bytes_out.
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* (Used for the decompressed data only.)
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*/
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static void flush_window(void)
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{
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ulg c = crc; /* temporary variable */
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unsigned n;
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uch *in, *out, ch;
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in = window;
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out = &output_data[output_ptr];
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for (n = 0; n < outcnt; n++) {
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ch = *out++ = *in++;
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c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
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}
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crc = c;
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bytes_out += (ulg)outcnt;
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output_ptr += (ulg)outcnt;
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outcnt = 0;
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}
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static void error(char *x)
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{
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puts("\n\n");
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puts(x);
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puts("\n\n -- System halted");
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while(1); /* Halt */
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}
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#define STACK_SIZE (4096)
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long user_stack [STACK_SIZE];
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long* stack_start = &user_stack[STACK_SIZE];
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void decompress_kernel(void)
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{
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output_data = 0;
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output_ptr = (unsigned long)0x400000;
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free_mem_ptr = (unsigned long)&_end;
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free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
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makecrc();
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puts("Uncompressing Linux... ");
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gunzip();
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puts("Ok, booting the kernel.\n");
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}
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