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Diffstat (limited to 'arch/mn10300/boot/tools/build.c')
| -rw-r--r-- | arch/mn10300/boot/tools/build.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/arch/mn10300/boot/tools/build.c b/arch/mn10300/boot/tools/build.c deleted file mode 100644 index 3ce158fe07b0..000000000000 --- a/arch/mn10300/boot/tools/build.c +++ /dev/null @@ -1,191 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 1991, 1992 Linus Torvalds - * Copyright (C) 1997 Martin Mares - */ - -/* - * 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 - * Rewritten by Martin Mares, April 1997 - */ - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <stdarg.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/sysmacros.h> -#include <unistd.h> -#include <fcntl.h> -#include <asm/boot.h> - -#define DEFAULT_MAJOR_ROOT 0 -#define DEFAULT_MINOR_ROOT 0 - -/* Minimal number of setup sectors (see also bootsect.S) */ -#define SETUP_SECTS 4 - -uint8_t buf[1024]; -int fd; -int is_big_kernel; - -__attribute__((noreturn)) -void die(const char *str, ...) -{ - va_list args; - va_start(args, str); - vfprintf(stderr, str, args); - fputc('\n', stderr); - exit(1); -} - -void file_open(const char *name) -{ - fd = open(name, O_RDONLY, 0); - if (fd < 0) - die("Unable to open `%s': %m", name); -} - -__attribute__((noreturn)) -void usage(void) -{ - die("Usage: build [-b] bootsect setup system [rootdev] [> image]"); -} - -int main(int argc, char **argv) -{ - unsigned int i, c, sz, setup_sectors; - uint32_t sys_size; - uint8_t major_root, minor_root; - struct stat sb; - - if (argc > 2 && !strcmp(argv[1], "-b")) { - is_big_kernel = 1; - argc--, argv++; - } - 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); - - file_open(argv[1]); - i = read(fd, buf, sizeof(buf)); - fprintf(stderr, "Boot sector %d bytes.\n", i); - if (i != 512) - die("Boot block must be exactly 512 bytes"); - if (buf[510] != 0x55 || buf[511] != 0xaa) - die("Boot block hasn't got boot flag (0xAA55)"); - buf[508] = minor_root; - buf[509] = major_root; - if (write(1, buf, 512) != 512) - die("Write call failed"); - close(fd); - - /* Copy the setup code */ - file_open(argv[2]); - for (i = 0; (c = read(fd, buf, sizeof(buf))) > 0; i += c) - if (write(1, buf, c) != c) - die("Write call failed"); - if (c != 0) - die("read-error on `setup'"); - close(fd); - - /* Pad unused space with zeros */ - setup_sectors = (i + 511) / 512; - /* for compatibility with ancient versions of LILO. */ - if (setup_sectors < SETUP_SECTS) - setup_sectors = SETUP_SECTS; - fprintf(stderr, "Setup is %d bytes.\n", i); - memset(buf, 0, sizeof(buf)); - while (i < setup_sectors * 512) { - c = setup_sectors * 512 - i; - if (c > sizeof(buf)) - c = sizeof(buf); - if (write(1, buf, c) != c) - die("Write call failed"); - i += c; - } - - file_open(argv[3]); - if (fstat(fd, &sb)) - die("Unable to stat `%s': %m", argv[3]); - sz = sb.st_size; - fprintf(stderr, "System is %d kB\n", sz / 1024); - sys_size = (sz + 15) / 16; - /* 0x28000*16 = 2.5 MB, conservative estimate for the current maximum */ - if (sys_size > (is_big_kernel ? 0x28000 : DEF_SYSSIZE)) - die("System is too big. Try using %smodules.", - is_big_kernel ? "" : "bzImage or "); - if (sys_size > 0xffff) - fprintf(stderr, - "warning: kernel is too big for standalone boot " - "from floppy\n"); - while (sz > 0) { - int l, n; - - l = (sz > sizeof(buf)) ? sizeof(buf) : sz; - n = read(fd, buf, l); - if (n != l) { - if (n < 0) - die("Error reading %s: %m", argv[3]); - else - die("%s: Unexpected EOF", argv[3]); - } - if (write(1, buf, l) != l) - die("Write failed"); - sz -= l; - } - close(fd); - - /* Write sizes to the bootsector */ - if (lseek(1, 497, SEEK_SET) != 497) - die("Output: seek failed"); - buf[0] = setup_sectors; - if (write(1, buf, 1) != 1) - die("Write of setup sector count failed"); - if (lseek(1, 500, SEEK_SET) != 500) - die("Output: seek failed"); - buf[0] = (sys_size & 0xff); - buf[1] = ((sys_size >> 8) & 0xff); - if (write(1, buf, 2) != 2) - die("Write of image length failed"); - - return 0; -} |