diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/x86_64/boot |
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/x86_64/boot')
-rw-r--r-- | arch/x86_64/boot/Makefile | 102 | ||||
-rw-r--r-- | arch/x86_64/boot/bootsect.S | 98 | ||||
-rw-r--r-- | arch/x86_64/boot/compressed/Makefile | 32 | ||||
-rw-r--r-- | arch/x86_64/boot/compressed/head.S | 142 | ||||
-rw-r--r-- | arch/x86_64/boot/compressed/misc.c | 354 | ||||
-rw-r--r-- | arch/x86_64/boot/compressed/miscsetup.h | 39 | ||||
-rw-r--r-- | arch/x86_64/boot/compressed/vmlinux.scr | 9 | ||||
-rw-r--r-- | arch/x86_64/boot/install.sh | 40 | ||||
-rw-r--r-- | arch/x86_64/boot/mtools.conf.in | 17 | ||||
-rw-r--r-- | arch/x86_64/boot/setup.S | 867 | ||||
-rw-r--r-- | arch/x86_64/boot/tools/build.c | 186 | ||||
-rw-r--r-- | arch/x86_64/boot/video.S | 2007 |
12 files changed, 3893 insertions, 0 deletions
diff --git a/arch/x86_64/boot/Makefile b/arch/x86_64/boot/Makefile new file mode 100644 index 00000000000..f4399c701b7 --- /dev/null +++ b/arch/x86_64/boot/Makefile @@ -0,0 +1,102 @@ +# +# arch/x86_64/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) 1994 by Linus Torvalds +# + +# ROOT_DEV specifies the default root-device when making the image. +# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case +# the default of FLOPPY is used by 'build'. + +ROOT_DEV := CURRENT + +# If you want to preset the SVGA mode, uncomment the next line and +# set SVGA_MODE to whatever number you want. +# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode. +# The number is the same as you would ordinarily press at bootup. + +SVGA_MODE := -DSVGA_MODE=NORMAL_VGA + +# If you want the RAM disk device, define this to be the size in blocks. + +#RAMDISK := -DRAMDISK=512 + +targets := vmlinux.bin bootsect bootsect.o \ + setup setup.o bzImage mtools.conf + +EXTRA_CFLAGS := -m32 + +hostprogs-y := tools/build +HOST_EXTRACFLAGS += $(LINUXINCLUDE) +subdir- := compressed/ #Let make clean descend in compressed/ +# --------------------------------------------------------------------------- + +$(obj)/bzImage: IMAGE_OFFSET := 0x100000 +$(obj)/bzImage: EXTRA_AFLAGS := -traditional $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__ +$(obj)/bzImage: BUILDFLAGS := -b + +quiet_cmd_image = BUILD $@ +cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/bootsect $(obj)/setup \ + $(obj)/vmlinux.bin $(ROOT_DEV) > $@ + +$(obj)/bzImage: $(obj)/bootsect $(obj)/setup \ + $(obj)/vmlinux.bin $(obj)/tools/build FORCE + $(call if_changed,image) + @echo 'Kernel: $@ is ready' + +$(obj)/vmlinux.bin: $(obj)/compressed/vmlinux FORCE + $(call if_changed,objcopy) + +LDFLAGS_bootsect := -Ttext 0x0 -s --oformat binary +LDFLAGS_setup := -Ttext 0x0 -s --oformat binary -e begtext + +$(obj)/setup $(obj)/bootsect: %: %.o FORCE + $(call if_changed,ld) + +$(obj)/compressed/vmlinux: FORCE + $(Q)$(MAKE) $(build)=$(obj)/compressed IMAGE_OFFSET=$(IMAGE_OFFSET) $@ + +# Set this if you want to pass append arguments to the zdisk/fdimage kernel +FDARGS = + +$(obj)/mtools.conf: $(src)/mtools.conf.in + sed -e 's|@OBJ@|$(obj)|g' < $< > $@ + +# This requires write access to /dev/fd0 +zdisk: $(BOOTIMAGE) $(obj)/mtools.conf + MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync + syslinux /dev/fd0 ; sync + echo 'default linux $(FDARGS)' | \ + MTOOLSRC=$(obj)/mtools.conf mcopy - a:syslinux.cfg + MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux ; sync + +# These require being root or having syslinux 2.02 or higher installed +fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf + dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440 + MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync + syslinux $(obj)/fdimage ; sync + echo 'default linux $(FDARGS)' | \ + MTOOLSRC=$(obj)/mtools.conf mcopy - v:syslinux.cfg + MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux ; sync + +fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf + dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880 + MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync + syslinux $(obj)/fdimage ; sync + echo 'default linux $(FDARGS)' | \ + MTOOLSRC=$(obj)/mtools.conf mcopy - w:syslinux.cfg + MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux ; sync + +zlilo: $(BOOTIMAGE) + if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi + if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi + cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz + cp System.map $(INSTALL_PATH)/ + if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi + +install: $(BOOTIMAGE) + sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)" diff --git a/arch/x86_64/boot/bootsect.S b/arch/x86_64/boot/bootsect.S new file mode 100644 index 00000000000..bb15d406ee9 --- /dev/null +++ b/arch/x86_64/boot/bootsect.S @@ -0,0 +1,98 @@ +/* + * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds + * + * modified by Drew Eckhardt + * modified by Bruce Evans (bde) + * modified by Chris Noe (May 1999) (as86 -> gas) + * gutted by H. Peter Anvin (Jan 2003) + * + * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment + * addresses must be multiplied by 16 to obtain their respective linear + * addresses. To avoid confusion, linear addresses are written using leading + * hex while segment addresses are written as segment:offset. + * + */ + +#include <asm/boot.h> + +SETUPSECTS = 4 /* default nr of setup-sectors */ +BOOTSEG = 0x07C0 /* original address of boot-sector */ +INITSEG = DEF_INITSEG /* we move boot here - out of the way */ +SETUPSEG = DEF_SETUPSEG /* setup starts here */ +SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */ +SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */ + /* to be loaded */ +ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */ +SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */ + +#ifndef SVGA_MODE +#define SVGA_MODE ASK_VGA +#endif + +#ifndef RAMDISK +#define RAMDISK 0 +#endif + +#ifndef ROOT_RDONLY +#define ROOT_RDONLY 1 +#endif + +.code16 +.text + +.global _start +_start: + + # Normalize the start address + jmpl $BOOTSEG, $start2 + +start2: + movw %cs, %ax + movw %ax, %ds + movw %ax, %es + movw %ax, %ss + movw $0x7c00, %sp + sti + cld + + movw $bugger_off_msg, %si + +msg_loop: + lodsb + andb %al, %al + jz die + movb $0xe, %ah + movw $7, %bx + int $0x10 + jmp msg_loop + +die: + # Allow the user to press a key, then reboot + xorw %ax, %ax + int $0x16 + int $0x19 + + # int 0x19 should never return. In case it does anyway, + # invoke the BIOS reset code... + ljmp $0xf000,$0xfff0 + + +bugger_off_msg: + .ascii "Direct booting from floppy is no longer supported.\r\n" + .ascii "Please use a boot loader program instead.\r\n" + .ascii "\n" + .ascii "Remove disk and press any key to reboot . . .\r\n" + .byte 0 + + + # Kernel attributes; used by setup + + .org 497 +setup_sects: .byte SETUPSECTS +root_flags: .word ROOT_RDONLY +syssize: .word SYSSIZE +swap_dev: .word SWAP_DEV +ram_size: .word RAMDISK +vid_mode: .word SVGA_MODE +root_dev: .word ROOT_DEV +boot_flag: .word 0xAA55 diff --git a/arch/x86_64/boot/compressed/Makefile b/arch/x86_64/boot/compressed/Makefile new file mode 100644 index 00000000000..f89d96f11a9 --- /dev/null +++ b/arch/x86_64/boot/compressed/Makefile @@ -0,0 +1,32 @@ +# +# linux/arch/x86_64/boot/compressed/Makefile +# +# create a compressed vmlinux image from the original vmlinux +# +# Note all the files here are compiled/linked as 32bit executables. +# + +targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o +EXTRA_AFLAGS := -traditional -m32 + +# cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with +# -m32 +CFLAGS := -m32 -D__KERNEL__ -Iinclude -O2 -fno-strict-aliasing +LDFLAGS := -m elf_i386 + +LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32 -m elf_i386 + +$(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(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 + $(call if_changed,gzip) + +LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T + +$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE + $(call if_changed,ld) diff --git a/arch/x86_64/boot/compressed/head.S b/arch/x86_64/boot/compressed/head.S new file mode 100644 index 00000000000..27264dbd575 --- /dev/null +++ b/arch/x86_64/boot/compressed/head.S @@ -0,0 +1,142 @@ +/* + * linux/boot/head.S + * + * Copyright (C) 1991, 1992, 1993 Linus Torvalds + * + * $Id: head.S,v 1.3 2001/04/20 00:59:28 ak Exp $ + */ + +/* + * head.S contains the 32-bit startup code. + * + * NOTE!!! Startup happens at absolute address 0x00001000, which is also where + * the page directory will exist. The startup code will be overwritten by + * the page directory. [According to comments etc elsewhere on a compressed + * kernel it will end up at 0x1000 + 1Mb I hope so as I assume this. - AC] + * + * Page 0 is deliberately kept safe, since System Management Mode code in + * laptops may need to access the BIOS data stored there. This is also + * useful for future device drivers that either access the BIOS via VM86 + * mode. + */ + +/* + * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 + */ +.code32 +.text + +#include <linux/linkage.h> +#include <asm/segment.h> + + .code32 + .globl startup_32 + +startup_32: + cld + cli + movl $(__KERNEL_DS),%eax + movl %eax,%ds + movl %eax,%es + movl %eax,%fs + movl %eax,%gs + + lss stack_start,%esp + xorl %eax,%eax +1: incl %eax # check that A20 really IS enabled + movl %eax,0x000000 # loop forever if it isn't + cmpl %eax,0x100000 + je 1b + +/* + * Initialize eflags. Some BIOS's leave bits like NT set. This would + * confuse the debugger if this code is traced. + * XXX - best to initialize before switching to protected mode. + */ + pushl $0 + popfl +/* + * Clear BSS + */ + xorl %eax,%eax + movl $_edata,%edi + movl $_end,%ecx + subl %edi,%ecx + cld + rep + stosb +/* + * Do the decompression, and jump to the new kernel.. + */ + subl $16,%esp # place for structure on the stack + movl %esp,%eax + pushl %esi # real mode pointer as second arg + pushl %eax # address of structure as first arg + call decompress_kernel + orl %eax,%eax + jnz 3f + addl $8,%esp + xorl %ebx,%ebx + ljmp $(__KERNEL_CS), $0x100000 + +/* + * We come here, if we were loaded high. + * We need to move the move-in-place routine down to 0x1000 + * and then start it with the buffer addresses in registers, + * which we got from the stack. + */ +3: + movl %esi,%ebx + movl $move_routine_start,%esi + movl $0x1000,%edi + movl $move_routine_end,%ecx + subl %esi,%ecx + addl $3,%ecx + shrl $2,%ecx + cld + rep + movsl + + popl %esi # discard the address + addl $4,%esp # real mode pointer + popl %esi # low_buffer_start + popl %ecx # lcount + popl %edx # high_buffer_start + popl %eax # hcount + movl $0x100000,%edi + cli # make sure we don't get interrupted + ljmp $(__KERNEL_CS), $0x1000 # and jump to the move routine + +/* + * Routine (template) for moving the decompressed kernel in place, + * if we were high loaded. This _must_ PIC-code ! + */ +move_routine_start: + movl %ecx,%ebp + shrl $2,%ecx + rep + movsl + movl %ebp,%ecx + andl $3,%ecx + rep + movsb + movl %edx,%esi + movl %eax,%ecx # NOTE: rep movsb won't move if %ecx == 0 + addl $3,%ecx + shrl $2,%ecx + rep + movsl + movl %ebx,%esi # Restore setup pointer + xorl %ebx,%ebx + ljmp $(__KERNEL_CS), $0x100000 +move_routine_end: + + +/* Stack for uncompression */ + .align 32 +user_stack: + .fill 4096,4,0 +stack_start: + .long user_stack+4096 + .word __KERNEL_DS + diff --git a/arch/x86_64/boot/compressed/misc.c b/arch/x86_64/boot/compressed/misc.c new file mode 100644 index 00000000000..c8b9216f9e6 --- /dev/null +++ b/arch/x86_64/boot/compressed/misc.c @@ -0,0 +1,354 @@ +/* + * 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 + * puts by Nick Holloway 1993, better puts by Martin Mares 1995 + * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 + */ + +#include "miscsetup.h" +#include <asm/io.h> + +/* + * 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 **); + +/* + * This is set up by the setup-routine at boot-time + */ +static unsigned char *real_mode; /* Pointer to real-mode data */ + +#define EXT_MEM_K (*(unsigned short *)(real_mode + 0x2)) +#ifndef STANDARD_MEMORY_BIOS_CALL +#define ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0)) +#endif +#define SCREEN_INFO (*(struct screen_info *)(real_mode+0)) + +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 putstr(const char *); + +extern int end; +static long free_mem_ptr = (long)&end; +static long free_mem_end_ptr; + +#define INPLACE_MOVE_ROUTINE 0x1000 +#define LOW_BUFFER_START 0x2000 +#define LOW_BUFFER_MAX 0x90000 +#define HEAP_SIZE 0x3000 +static unsigned int low_buffer_end, low_buffer_size; +static int high_loaded =0; +static uch *high_buffer_start /* = (uch *)(((ulg)&end) + HEAP_SIZE)*/; + +static char *vidmem = (char *)0xb8000; +static int vidport; +static int lines, cols; + +#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; +} + +static void scroll(void) +{ + int i; + + memcpy ( vidmem, vidmem + cols * 2, ( lines - 1 ) * cols * 2 ); + for ( i = ( lines - 1 ) * cols * 2; i < lines * cols * 2; i += 2 ) + vidmem[i] = ' '; +} + +static void putstr(const char *s) +{ + int x,y,pos; + char c; + + x = SCREEN_INFO.orig_x; + y = SCREEN_INFO.orig_y; + + while ( ( c = *s++ ) != '\0' ) { + if ( c == '\n' ) { + x = 0; + if ( ++y >= lines ) { + scroll(); + y--; + } + } else { + vidmem [ ( x + cols * y ) * 2 ] = c; + if ( ++x >= cols ) { + x = 0; + if ( ++y >= lines ) { + scroll(); + y--; + } + } + } + } + + SCREEN_INFO.orig_x = x; + SCREEN_INFO.orig_y = y; + + pos = (x + cols * y) * 2; /* Update cursor position */ + outb_p(14, vidport); + outb_p(0xff & (pos >> 9), vidport+1); + outb_p(15, vidport); + outb_p(0xff & (pos >> 1), vidport+1); +} + +void* memset(void* s, int c, unsigned 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, unsigned 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_low(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 flush_window_high(void) +{ + ulg c = crc; /* temporary variable */ + unsigned n; + uch *in, ch; + in = window; + for (n = 0; n < outcnt; n++) { + ch = *output_data++ = *in++; + if ((ulg)output_data == low_buffer_end) output_data=high_buffer_start; + c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8); + } + crc = c; + bytes_out += (ulg)outcnt; + outcnt = 0; +} + +static void flush_window(void) +{ + if (high_loaded) flush_window_high(); + else flush_window_low(); +} + +static void error(char *x) +{ + putstr("\n\n"); + putstr(x); + putstr("\n\n -- System halted"); + + while(1); +} + +void setup_normal_output_buffer(void) +{ +#ifdef STANDARD_MEMORY_BIOS_CALL + if (EXT_MEM_K < 1024) error("Less than 2MB of memory"); +#else + if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < 1024) error("Less than 2MB of memory"); +#endif + output_data = (char *)0x100000; /* Points to 1M */ + free_mem_end_ptr = (long)real_mode; +} + +struct moveparams { + uch *low_buffer_start; int lcount; + uch *high_buffer_start; int hcount; +}; + +void setup_output_buffer_if_we_run_high(struct moveparams *mv) +{ + high_buffer_start = (uch *)(((ulg)&end) + HEAP_SIZE); +#ifdef STANDARD_MEMORY_BIOS_CALL + if (EXT_MEM_K < (3*1024)) error("Less than 4MB of memory"); +#else + if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory"); +#endif + mv->low_buffer_start = output_data = (char *)LOW_BUFFER_START; + low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX + ? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff; + low_buffer_size = low_buffer_end - LOW_BUFFER_START; + high_loaded = 1; + free_mem_end_ptr = (long)high_buffer_start; + if ( (0x100000 + low_buffer_size) > ((ulg)high_buffer_start)) { + high_buffer_start = (uch *)(0x100000 + low_buffer_size); + mv->hcount = 0; /* say: we need not to move high_buffer */ + } + else mv->hcount = -1; + mv->high_buffer_start = high_buffer_start; +} + +void close_output_buffer_if_we_run_high(struct moveparams *mv) +{ + if (bytes_out > low_buffer_size) { + mv->lcount = low_buffer_size; + if (mv->hcount) + mv->hcount = bytes_out - low_buffer_size; + } else { + mv->lcount = bytes_out; + mv->hcount = 0; + } +} + +int decompress_kernel(struct moveparams *mv, void *rmode) +{ + real_mode = rmode; + + if (SCREEN_INFO.orig_video_mode == 7) { + vidmem = (char *) 0xb0000; + vidport = 0x3b4; + } else { + vidmem = (char *) 0xb8000; + vidport = 0x3d4; + } + + lines = SCREEN_INFO.orig_video_lines; + cols = SCREEN_INFO.orig_video_cols; + + if (free_mem_ptr < 0x100000) setup_normal_output_buffer(); + else setup_output_buffer_if_we_run_high(mv); + + makecrc(); + putstr(".\nDecompressing Linux..."); + gunzip(); + putstr("done.\nBooting the kernel.\n"); + if (high_loaded) close_output_buffer_if_we_run_high(mv); + return high_loaded; +} diff --git a/arch/x86_64/boot/compressed/miscsetup.h b/arch/x86_64/boot/compressed/miscsetup.h new file mode 100644 index 00000000000..bb162053170 --- /dev/null +++ b/arch/x86_64/boot/compressed/miscsetup.h @@ -0,0 +1,39 @@ +#define NULL 0 +//typedef unsigned int size_t; + + +struct screen_info { + unsigned char orig_x; /* 0x00 */ + unsigned char orig_y; /* 0x01 */ + unsigned short dontuse1; /* 0x02 -- EXT_MEM_K sits here */ + unsigned short orig_video_page; /* 0x04 */ + unsigned char orig_video_mode; /* 0x06 */ + unsigned char orig_video_cols; /* 0x07 */ + unsigned short unused2; /* 0x08 */ + unsigned short orig_video_ega_bx; /* 0x0a */ + unsigned short unused3; /* 0x0c */ + unsigned char orig_video_lines; /* 0x0e */ + unsigned char orig_video_isVGA; /* 0x0f */ + unsigned short orig_video_points; /* 0x10 */ + + /* VESA graphic mode -- linear frame buffer */ + unsigned short lfb_width; /* 0x12 */ + unsigned short lfb_height; /* 0x14 */ + unsigned short lfb_depth; /* 0x16 */ + unsigned long lfb_base; /* 0x18 */ + unsigned long lfb_size; /* 0x1c */ + unsigned short dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */ + unsigned short lfb_linelength; /* 0x24 */ + unsigned char red_size; /* 0x26 */ + unsigned char red_pos; /* 0x27 */ + unsigned char green_size; /* 0x28 */ + unsigned char green_pos; /* 0x29 */ + unsigned char blue_size; /* 0x2a */ + unsigned char blue_pos; /* 0x2b */ + unsigned char rsvd_size; /* 0x2c */ + unsigned char rsvd_pos; /* 0x2d */ + unsigned short vesapm_seg; /* 0x2e */ + unsigned short vesapm_off; /* 0x30 */ + unsigned short pages; /* 0x32 */ + /* 0x34 -- 0x3f reserved for future expansion */ +}; diff --git a/arch/x86_64/boot/compressed/vmlinux.scr b/arch/x86_64/boot/compressed/vmlinux.scr new file mode 100644 index 00000000000..1ed9d791f86 --- /dev/null +++ b/arch/x86_64/boot/compressed/vmlinux.scr @@ -0,0 +1,9 @@ +SECTIONS +{ + .data : { + input_len = .; + LONG(input_data_end - input_data) input_data = .; + *(.data) + input_data_end = .; + } +} diff --git a/arch/x86_64/boot/install.sh b/arch/x86_64/boot/install.sh new file mode 100644 index 00000000000..90f2452b3b9 --- /dev/null +++ b/arch/x86_64/boot/install.sh @@ -0,0 +1,40 @@ +#!/bin/sh +# +# arch/i386/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 +# +# "make install" script for i386 architecture +# +# Arguments: +# $1 - kernel version +# $2 - kernel image file +# $3 - kernel map file +# $4 - default install path (blank if root directory) +# + +# User may have a custom install script + +if [ -x ~/bin/installkernel ]; then exec ~/bin/installkernel "$@"; fi +if [ -x /sbin/installkernel ]; then exec /sbin/installkernel "$@"; fi + +# Default install - same as make zlilo + +if [ -f $4/vmlinuz ]; then + mv $4/vmlinuz $4/vmlinuz.old +fi + +if [ -f $4/System.map ]; then + mv $4/System.map $4/System.old +fi + +cat $2 > $4/vmlinuz +cp $3 $4/System.map + +if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi diff --git a/arch/x86_64/boot/mtools.conf.in b/arch/x86_64/boot/mtools.conf.in new file mode 100644 index 00000000000..efd6d2490c1 --- /dev/null +++ b/arch/x86_64/boot/mtools.conf.in @@ -0,0 +1,17 @@ +# +# mtools configuration file for "make (b)zdisk" +# + +# Actual floppy drive +drive a: + file="/dev/fd0" + +# 1.44 MB floppy disk image +drive v: + file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=18 filter + +# 2.88 MB floppy disk image (mostly for virtual uses) +drive w: + file="@OBJ@/fdimage" cylinders=80 heads=2 sectors=36 filter + + diff --git a/arch/x86_64/boot/setup.S b/arch/x86_64/boot/setup.S new file mode 100644 index 00000000000..3e838be9dbe --- /dev/null +++ b/arch/x86_64/boot/setup.S @@ -0,0 +1,867 @@ +/* + * setup.S Copyright (C) 1991, 1992 Linus Torvalds + * + * setup.s is responsible for getting the system data from the BIOS, + * and putting them into the appropriate places in system memory. + * both setup.s and system has been loaded by the bootblock. + * + * This code asks the bios for memory/disk/other parameters, and + * puts them in a "safe" place: 0x90000-0x901FF, ie where the + * boot-block used to be. It is then up to the protected mode + * system to read them from there before the area is overwritten + * for buffer-blocks. + * + * Move PS/2 aux init code to psaux.c + * (troyer@saifr00.cfsat.Honeywell.COM) 03Oct92 + * + * some changes and additional features by Christoph Niemann, + * March 1993/June 1994 (Christoph.Niemann@linux.org) + * + * add APM BIOS checking by Stephen Rothwell, May 1994 + * (sfr@canb.auug.org.au) + * + * High load stuff, initrd support and position independency + * by Hans Lermen & Werner Almesberger, February 1996 + * <lermen@elserv.ffm.fgan.de>, <almesber@lrc.epfl.ch> + * + * Video handling moved to video.S by Martin Mares, March 1996 + * <mj@k332.feld.cvut.cz> + * + * Extended memory detection scheme retwiddled by orc@pell.chi.il.us (david + * parsons) to avoid loadlin confusion, July 1997 + * + * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999. + * <stiker@northlink.com> + * + * Fix to work around buggy BIOSes which dont use carry bit correctly + * and/or report extended memory in CX/DX for e801h memory size detection + * call. As a result the kernel got wrong figures. The int15/e801h docs + * from Ralf Brown interrupt list seem to indicate AX/BX should be used + * anyway. So to avoid breaking many machines (presumably there was a reason + * to orginally use CX/DX instead of AX/BX), we do a kludge to see + * if CX/DX have been changed in the e801 call and if so use AX/BX . + * Michael Miller, April 2001 <michaelm@mjmm.org> + * + * Added long mode checking and SSE force. March 2003, Andi Kleen. + */ + +#include <linux/config.h> +#include <asm/segment.h> +#include <linux/version.h> +#include <linux/compile.h> +#include <asm/boot.h> +#include <asm/e820.h> +#include <asm/page.h> + +/* Signature words to ensure LILO loaded us right */ +#define SIG1 0xAA55 +#define SIG2 0x5A5A + +INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way +SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536). +SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment + # ... and the former contents of CS + +DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020 + +.code16 +.globl begtext, begdata, begbss, endtext, enddata, endbss + +.text +begtext: +.data +begdata: +.bss +begbss: +.text + +start: + jmp trampoline + +# This is the setup header, and it must start at %cs:2 (old 0x9020:2) + + .ascii "HdrS" # header signature + .word 0x0203 # header version number (>= 0x0105) + # or else old loadlin-1.5 will fail) +realmode_swtch: .word 0, 0 # default_switch, SETUPSEG +start_sys_seg: .word SYSSEG + .word kernel_version # pointing to kernel version string + # above section of header is compatible + # with loadlin-1.5 (header v1.5). Don't + # change it. + +type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin, + # Bootlin, SYSLX, bootsect...) + # See Documentation/i386/boot.txt for + # assigned ids + +# flags, unused bits must be zero (RFU) bit within loadflags +loadflags: +LOADED_HIGH = 1 # If set, the kernel is loaded high +CAN_USE_HEAP = 0x80 # If set, the loader also has set + # heap_end_ptr to tell how much + # space behind setup.S can be used for + # heap purposes. + # Only the loader knows what is free +#ifndef __BIG_KERNEL__ + .byte 0 +#else + .byte LOADED_HIGH +#endif + +setup_move_size: .word 0x8000 # size to move, when setup is not + # loaded at 0x90000. We will move setup + # to 0x90000 then just before jumping + # into the kernel. However, only the + # loader knows how much data behind + # us also needs to be loaded. + +code32_start: # here loaders can put a different + # start address for 32-bit code. +#ifndef __BIG_KERNEL__ + .long 0x1000 # 0x1000 = default for zImage +#else + .long 0x100000 # 0x100000 = default for big kernel +#endif + +ramdisk_image: .long 0 # address of loaded ramdisk image + # Here the loader puts the 32-bit + # address where it loaded the image. + # This only will be read by the kernel. + +ramdisk_size: .long 0 # its size in bytes + +bootsect_kludge: + .long 0 # obsolete + +heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later) + # space from here (exclusive) down to + # end of setup code can be used by setup + # for local heap purposes. + +pad1: .word 0 +cmd_line_ptr: .long 0 # (Header version 0x0202 or later) + # If nonzero, a 32-bit pointer + # to the kernel command line. + # The command line should be + # located between the start of + # setup and the end of low + # memory (0xa0000), or it may + # get overwritten before it + # gets read. If this field is + # used, there is no longer + # anything magical about the + # 0x90000 segment; the setup + # can be located anywhere in + # low memory 0x10000 or higher. + +ramdisk_max: .long 0xffffffff + +trampoline: call start_of_setup + .align 16 + # The offset at this point is 0x240 + .space (0x7ff-0x240+1) # E820 & EDD space (ending at 0x7ff) +# End of setup header ##################################################### + +start_of_setup: +# Bootlin depends on this being done early + movw $0x01500, %ax + movb $0x81, %dl + int $0x13 + +#ifdef SAFE_RESET |