aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/boot
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sh/boot
downloadlinux-2.6.34-ux500-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sh/boot')
-rw-r--r--arch/sh/boot/Makefile20
-rw-r--r--arch/sh/boot/compressed/Makefile41
-rw-r--r--arch/sh/boot/compressed/head.S120
-rw-r--r--arch/sh/boot/compressed/install.sh56
-rw-r--r--arch/sh/boot/compressed/misc.c240
-rw-r--r--arch/sh/boot/compressed/vmlinux.scr9
6 files changed, 486 insertions, 0 deletions
diff --git a/arch/sh/boot/Makefile b/arch/sh/boot/Makefile
new file mode 100644
index 00000000000..60797b31089
--- /dev/null
+++ b/arch/sh/boot/Makefile
@@ -0,0 +1,20 @@
+#
+# arch/sh/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.
+#
+# Copyright (C) 1999 Stuart Menefy
+#
+
+targets := zImage
+subdir- := compressed
+
+$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
+ $(call if_changed,objcopy)
+ @echo 'Kernel: $@ is ready'
+
+$(obj)/compressed/vmlinux: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/compressed $@
+
diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
new file mode 100644
index 00000000000..75a6876bf6c
--- /dev/null
+++ b/arch/sh/boot/compressed/Makefile
@@ -0,0 +1,41 @@
+#
+# linux/arch/sh/boot/compressed/Makefile
+#
+# create a compressed vmlinux image from the original vmlinux
+#
+
+targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
+EXTRA_AFLAGS := -traditional
+
+OBJECTS = $(obj)/head.o $(obj)/misc.o
+
+ifdef CONFIG_SH_STANDARD_BIOS
+OBJECTS += $(obj)/../../kernel/sh_bios.o
+endif
+
+#
+# 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 ?= 0x0c000000
+CONFIG_BOOT_LINK_OFFSET ?= 0x00800000
+IMAGE_OFFSET := $(shell printf "0x%8x" $$[0x80000000+$(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)])
+
+LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds
+
+$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
+ $(call if_changed,ld)
+ @:
+
+$(obj)/vmlinux.bin: vmlinux FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,gzip)
+
+LDFLAGS_piggy.o := -r --format binary --oformat elf32-sh-linux -T
+OBJCOPYFLAGS += -R .empty_zero_page
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+ $(call if_changed,ld)
diff --git a/arch/sh/boot/compressed/head.S b/arch/sh/boot/compressed/head.S
new file mode 100644
index 00000000000..88db04d325f
--- /dev/null
+++ b/arch/sh/boot/compressed/head.S
@@ -0,0 +1,120 @@
+/*
+ * linux/arch/sh/boot/compressed/head.S
+ *
+ * Copyright (C) 1999 Stuart Menefy
+ * Copyright (C) 2003 SUGIOKA Toshinobu
+ */
+
+.text
+
+#include <linux/config.h>
+#include <linux/linkage.h>
+
+ .global startup
+startup:
+ /* Load initial status register */
+ mov.l init_sr, r1
+ ldc r1, sr
+
+ /* Move myself to proper location if necessary */
+ mova 1f, r0
+ mov.l 1f, r2
+ cmp/eq r2, r0
+ bt clear_bss
+ sub r0, r2
+ mov.l bss_start_addr, r0
+ mov #0xe0, r1
+ and r1, r0 ! align cache line
+ mov.l text_start_addr, r3
+ mov r0, r1
+ sub r2, r1
+3:
+ mov.l @r1, r4
+ mov.l @(4,r1), r5
+ mov.l @(8,r1), r6
+ mov.l @(12,r1), r7
+ mov.l @(16,r1), r8
+ mov.l @(20,r1), r9
+ mov.l @(24,r1), r10
+ mov.l @(28,r1), r11
+ mov.l r4, @r0
+ mov.l r5, @(4,r0)
+ mov.l r6, @(8,r0)
+ mov.l r7, @(12,r0)
+ mov.l r8, @(16,r0)
+ mov.l r9, @(20,r0)
+ mov.l r10, @(24,r0)
+ mov.l r11, @(28,r0)
+#ifdef CONFIG_CPU_SH4
+ ocbwb @r0
+#endif
+ cmp/hi r3, r0
+ add #-32, r0
+ bt/s 3b
+ add #-32, r1
+ mov.l 2f, r0
+ jmp @r0
+ nop
+
+ .align 2
+1: .long 1b
+2: .long clear_bss
+text_start_addr:
+ .long startup
+
+ /* Clear BSS */
+clear_bss:
+ mov.l end_addr, r1
+ mov.l bss_start_addr, r2
+ mov #0, r0
+l1:
+ mov.l r0, @-r1
+ cmp/eq r1,r2
+ bf l1
+
+ /* Set the initial pointer. */
+ mov.l init_stack_addr, r0
+ mov.l @r0, r15
+
+ /* Decompress the kernel */
+ mov.l decompress_kernel_addr, r0
+ jsr @r0
+ nop
+
+ /* Jump to the start of the decompressed kernel */
+ mov.l kernel_start_addr, r0
+ jmp @r0
+ nop
+
+ .align 2
+bss_start_addr:
+ .long __bss_start
+end_addr:
+ .long _end
+init_sr:
+ .long 0x400000F0 /* Privileged mode, Bank=0, Block=0, IMASK=0xF */
+init_stack_addr:
+ .long stack_start
+decompress_kernel_addr:
+ .long decompress_kernel
+kernel_start_addr:
+ .long _text+0x1000
+
+ .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
diff --git a/arch/sh/boot/compressed/install.sh b/arch/sh/boot/compressed/install.sh
new file mode 100644
index 00000000000..90589f0fec1
--- /dev/null
+++ b/arch/sh/boot/compressed/install.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+#
+# arch/sh/boot/install.sh
+#
+# 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) 1995 by Linus Torvalds
+#
+# Adapted from code in arch/i386/boot/Makefile by H. Peter Anvin
+# Adapted from code in arch/i386/boot/install.sh by Russell King
+# Adapted from code in arch/arm/boot/install.sh by Stuart Menefy
+#
+# "make install" script for sh architecture
+#
+# Arguments:
+# $1 - kernel version
+# $2 - kernel image file
+# $3 - kernel map file
+# $4 - default install path (blank if root directory)
+#
+
+# User may have a custom install script
+
+if [ -x /sbin/installkernel ]; then
+ exec /sbin/installkernel "$@"
+fi
+
+if [ "$2" = "zImage" ]; then
+# Compressed install
+ echo "Installing compressed kernel"
+ if [ -f $4/vmlinuz-$1 ]; then
+ mv $4/vmlinuz-$1 $4/vmlinuz.old
+ fi
+
+ if [ -f $4/System.map-$1 ]; then
+ mv $4/System.map-$1 $4/System.old
+ fi
+
+ cat $2 > $4/vmlinuz-$1
+ cp $3 $4/System.map-$1
+else
+# Normal install
+ echo "Installing normal kernel"
+ if [ -f $4/vmlinux-$1 ]; then
+ mv $4/vmlinux-$1 $4/vmlinux.old
+ fi
+
+ if [ -f $4/System.map ]; then
+ mv $4/System.map $4/System.old
+ fi
+
+ cat $2 > $4/vmlinux-$1
+ cp $3 $4/System.map
+fi
diff --git a/arch/sh/boot/compressed/misc.c b/arch/sh/boot/compressed/misc.c
new file mode 100644
index 00000000000..211e9110074
--- /dev/null
+++ b/arch/sh/boot/compressed/misc.c
@@ -0,0 +1,240 @@
+/*
+ * arch/sh/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 SH by Stuart Menefy, Aug 1999
+ *
+ * Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000
+ */
+
+#include <linux/config.h>
+#include <asm/uaccess.h>
+#ifdef CONFIG_SH_STANDARD_BIOS
+#include <asm/sh_bios.h>
+#endif
+
+/*
+ * gzip declarations
+ */
+
+#define OF(args) args
+#define STATIC static
+
+#undef memset
+#undef memcpy
+#define memzero(s, n) memset ((s), 0, (n))
+
+typedef unsigned char uch;
+typedef unsigned short ush;
+typedef unsigned long ulg;
+
+#define WSIZE 0x8000 /* Window size must be at least 32k, */
+ /* and a power of two */
+
+static uch *inbuf; /* input buffer */
+static uch window[WSIZE]; /* Sliding window buffer */
+
+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 */
+
+/* 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 */
+
+#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
+
+/* 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
+
+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 **);
+
+extern char input_data[];
+extern int input_len;
+
+static long bytes_out = 0;
+static uch *output_data;
+static unsigned long output_ptr = 0;
+
+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 **);
+
+int puts(const char *);
+
+extern int _text; /* Defined in vmlinux.lds.S */
+extern int _end;
+static unsigned long free_mem_ptr;
+static unsigned long free_mem_end_ptr;
+
+#define HEAP_SIZE 0x10000
+
+#include "../../../../lib/inflate.c"
+
+static void *malloc(int size)
+{
+ void *p;
+
+ if (size <0) error("Malloc error");
+ if (free_mem_ptr == 0) error("Memory error");
+
+ free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
+
+ p = (void *)free_mem_ptr;
+ free_mem_ptr += size;
+
+ if (free_mem_ptr >= free_mem_end_ptr)
+ error("Out of memory");
+
+ return p;
+}
+
+static void free(void *where)
+{ /* Don't care */
+}
+
+static void gzip_mark(void **ptr)
+{
+ *ptr = (void *) free_mem_ptr;
+}
+
+static void gzip_release(void **ptr)
+{
+ free_mem_ptr = (long) *ptr;
+}
+
+#ifdef CONFIG_SH_STANDARD_BIOS
+size_t strlen(const char *s)
+{
+ int i = 0;
+
+ while (*s++)
+ i++;
+ return i;
+}
+
+int puts(const char *s)
+{
+ int len = strlen(s);
+ sh_bios_console_write(s, len);
+ return len;
+}
+#else
+int puts(const char *s)
+{
+ /* This should be updated to use the sh-sci routines */
+ return 0;
+}
+#endif
+
+void* memset(void* s, int c, size_t n)
+{
+ int i;
+ char *ss = (char*)s;
+
+ for (i=0;i<n;i++) ss[i] = c;
+ return s;
+}
+
+void* memcpy(void* __dest, __const void* __src,
+ size_t __n)
+{
+ int i;
+ char *d = (char *)__dest, *s = (char *)__src;
+
+ for (i=0;i<__n;i++) d[i] = s[i];
+ return __dest;
+}
+
+/* ===========================================================================
+ * 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");
+ }
+
+ inbuf = input_data;
+ insize = input_len;
+ inptr = 1;
+ return inbuf[0];
+}
+
+/* ===========================================================================
+ * 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;
+
+ 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;
+}
+
+static void error(char *x)
+{
+ puts("\n\n");
+ puts(x);
+ puts("\n\n -- System halted");
+
+ while(1); /* Halt */
+}
+
+#define STACK_SIZE (4096)
+long user_stack [STACK_SIZE];
+long* stack_start = &user_stack[STACK_SIZE];
+
+void decompress_kernel(void)
+{
+ output_data = 0;
+ output_ptr = (unsigned long)&_text+0x20001000;
+ free_mem_ptr = (unsigned long)&_end;
+ free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
+
+ makecrc();
+ puts("Uncompressing Linux... ");
+ gunzip();
+ puts("Ok, booting the kernel.\n");
+}
diff --git a/arch/sh/boot/compressed/vmlinux.scr b/arch/sh/boot/compressed/vmlinux.scr
new file mode 100644
index 00000000000..1ed9d791f86
--- /dev/null
+++ b/arch/sh/boot/compressed/vmlinux.scr
@@ -0,0 +1,9 @@
+SECTIONS
+{
+ .data : {
+ input_len = .;
+ LONG(input_data_end - input_data) input_data = .;
+ *(.data)
+ input_data_end = .;
+ }
+}