From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- arch/cris/arch-v10/boot/tools/build.c | 288 ++++++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 arch/cris/arch-v10/boot/tools/build.c (limited to 'arch/cris/arch-v10/boot/tools') diff --git a/arch/cris/arch-v10/boot/tools/build.c b/arch/cris/arch-v10/boot/tools/build.c new file mode 100644 index 00000000000..2f9bbb26d60 --- /dev/null +++ b/arch/cris/arch-v10/boot/tools/build.c @@ -0,0 +1,288 @@ +/* + * linux/tools/build.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + */ + +/* + * This file builds a disk-image from three different files: + * + * - bootsect: exactly 512 bytes of 8086 machine code, loads the rest + * - setup: 8086 machine code, sets up system parm + * - system: 80386 code for actual system + * + * It does some checking that all files are of the correct type, and + * just writes the result to stdout, removing headers and padding to + * the right amount. It also writes some system data to stderr. + */ + +/* + * Changes by tytso to allow root device specification + * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 + * Cross compiling fixes by Gertjan van Wingerde, July 1996 + */ + +#include /* fprintf */ +#include +#include /* contains exit */ +#include /* unistd.h needs this */ +#include +#include +#include /* contains read/write */ +#include +#include +#include + +#define MINIX_HEADER 32 + +#define N_MAGIC_OFFSET 1024 +#ifndef __BFD__ +static int GCC_HEADER = sizeof(struct exec); +#endif + +#ifdef __BIG_KERNEL__ +#define SYS_SIZE 0xffff +#else +#define SYS_SIZE DEF_SYSSIZE +#endif + +#define DEFAULT_MAJOR_ROOT 0 +#define DEFAULT_MINOR_ROOT 0 + +/* max nr of sectors of setup: don't change unless you also change + * bootsect etc */ +#define SETUP_SECTS 4 + +#define STRINGIFY(x) #x + +typedef union { + int i; + long l; + short s[2]; + char b[4]; +} conv; + +long intel_long(long l) +{ + conv t; + + t.b[0] = l & 0xff; l >>= 8; + t.b[1] = l & 0xff; l >>= 8; + t.b[2] = l & 0xff; l >>= 8; + t.b[3] = l & 0xff; l >>= 8; + return t.l; +} + +int intel_int(int i) +{ + conv t; + + t.b[0] = i & 0xff; i >>= 8; + t.b[1] = i & 0xff; i >>= 8; + t.b[2] = i & 0xff; i >>= 8; + t.b[3] = i & 0xff; i >>= 8; + return t.i; +} + +short intel_short(short l) +{ + conv t; + + t.b[0] = l & 0xff; l >>= 8; + t.b[1] = l & 0xff; l >>= 8; + return t.s[0]; +} + +void die(const char * str) +{ + fprintf(stderr,"%s\n",str); + exit(1); +} + +void usage(void) +{ + die("Usage: build bootsect setup system [rootdev] [> image]"); +} + +int main(int argc, char ** argv) +{ + int i,c,id,sz,tmp_int; + unsigned long sys_size, tmp_long; + char buf[1024]; +#ifndef __BFD__ + struct exec *ex = (struct exec *)buf; +#endif + char major_root, minor_root; + struct stat sb; + unsigned char setup_sectors; + + if ((argc < 4) || (argc > 5)) + usage(); + if (argc > 4) { + if (!strcmp(argv[4], "CURRENT")) { + if (stat("/", &sb)) { + perror("/"); + die("Couldn't stat /"); + } + major_root = major(sb.st_dev); + minor_root = minor(sb.st_dev); + } else if (strcmp(argv[4], "FLOPPY")) { + if (stat(argv[4], &sb)) { + perror(argv[4]); + die("Couldn't stat root device."); + } + major_root = major(sb.st_rdev); + minor_root = minor(sb.st_rdev); + } else { + major_root = 0; + minor_root = 0; + } + } else { + major_root = DEFAULT_MAJOR_ROOT; + minor_root = DEFAULT_MINOR_ROOT; + } + fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root); + for (i=0;i0 ; i+=c ) +#ifdef __BIG_KERNEL__ + { + if (!i) { + /* Working with memcpy because of alignment constraints + on Sparc - Gertjan */ + memcpy(&tmp_long, &buf[2], sizeof(long)); + if (tmp_long != intel_long(0x53726448) ) + die("Wrong magic in loader header of 'setup'"); + memcpy(&tmp_int, &buf[6], sizeof(int)); + if (tmp_int < intel_int(0x200)) + die("Wrong version of loader header of 'setup'"); + buf[0x11] = 1; /* LOADED_HIGH */ + tmp_long = intel_long(0x100000); + memcpy(&buf[0x14], &tmp_long, sizeof(long)); /* code32_start */ + } +#endif + if (write(1,buf,c)!=c) + die("Write call failed"); +#ifdef __BIG_KERNEL__ + } +#endif + if (c != 0) + die("read-error on 'setup'"); + close (id); + setup_sectors = (unsigned char)((i + 511) / 512); + /* for compatibility with LILO */ + if (setup_sectors < SETUP_SECTS) + setup_sectors = SETUP_SECTS; + fprintf(stderr,"Setup is %d bytes.\n",i); + for (c=0 ; c sizeof(buf)) + c = sizeof(buf); + if (write(1,buf,c) != c) + die("Write call failed"); + i += c; + } + + if ((id=open(argv[3],O_RDONLY,0))<0) + die("Unable to open 'system'"); +#ifndef __BFD__ + if (read(id,buf,GCC_HEADER) != GCC_HEADER) + die("Unable to read header of 'system'"); + if (N_MAGIC(*ex) == ZMAGIC) { + GCC_HEADER = N_MAGIC_OFFSET; + lseek(id, GCC_HEADER, SEEK_SET); + } else if (N_MAGIC(*ex) != QMAGIC) + die("Non-GCC header of 'system'"); + fprintf(stderr,"System is %d kB (%d kB code, %d kB data and %d kB bss)\n", + (ex->a_text+ex->a_data+ex->a_bss)/1024, + ex->a_text /1024, + ex->a_data /1024, + ex->a_bss /1024); + sz = N_SYMOFF(*ex) - GCC_HEADER + 4; +#else + if (fstat (id, &sb)) { + perror ("fstat"); + die ("Unable to stat 'system'"); + } + sz = sb.st_size; + fprintf (stderr, "System is %d kB\n", sz/1024); +#endif + sys_size = (sz + 15) / 16; + if (sys_size > SYS_SIZE) + die("System is too big"); + while (sz > 0) { + int l, n; + + l = sz; + if (l > sizeof(buf)) + l = sizeof(buf); + if ((n=read(id, buf, l)) != l) { + if (n == -1) + perror(argv[1]); + else + fprintf(stderr, "Unexpected EOF\n"); + die("Can't read 'system'"); + } + if (write(1, buf, l) != l) + die("Write failed"); + sz -= l; + } + close(id); + if (lseek(1, 497, 0) == 497) { + if (write(1, &setup_sectors, 1) != 1) + die("Write of setup sectors failed"); + } + if (lseek(1,500,0) == 500) { + buf[0] = (sys_size & 0xff); + buf[1] = ((sys_size >> 8) & 0xff); + if (write(1, buf, 2) != 2) + die("Write failed"); + } + return(0); +} -- cgit v1.2.3