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