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Diffstat (limited to 'tools/misc/mbootpack/buildimage.c')
| -rw-r--r-- | tools/misc/mbootpack/buildimage.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/tools/misc/mbootpack/buildimage.c b/tools/misc/mbootpack/buildimage.c deleted file mode 100644 index a69d214684..0000000000 --- a/tools/misc/mbootpack/buildimage.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * buildimage.c - * - * Takes the memory image of a loaded kernel and modules and repackages - * it as a linux bzImage - * - * Copyright (C) 2003-2004 Tim Deegan (tjd21@cl.cam.ac.uk) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - * 02111-1307, USA. - * - * $Id: buildimage.c,v 1.2 2005/03/23 10:39:19 tjd21 Exp $ - * - */ - - - -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <errno.h> -#include <string.h> -#include <getopt.h> -#include <elf.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/mman.h> -#include <asm/page.h> - -#include "mbootpack.h" -#include "mb_header.h" - - -/* We will build an image that a bzImage-capable bootloader will load like - * this: - * - * ============== (0) - * (BIOS memory) - * -------------- - * (Bootloader) - * -------------- - * bzImage startup code - * MBI, command-lines, module info - * ============== (0xa0000) - * (memory hole) - * ============== (0x100000) - * Kernel and modules - * ============== - * - * The bzImage startup code is mostly taken straight from the linux kernel - * (see bootsect.S, startup.S). It does the usual unpleasant start-of-day - * tasks to get to 32-bit protected mode, then sets registers appropriately - * and jumps to the kernel's entry address. - * - * It also does some relocation to make sure the MBI is where we expect it, - * and parses the linux command line. - */ - -#define BZ_SETUP_OFFSET (512 * (1 + SETUPSECTS)) -#define BZ_ENTRY_OFFSET 0x30 -#define BZ_MBI_OFFSET 0x34 -/* These *MUST* fit the offsets of entry_address and mbi_address in setup.S */ - -/* Bring in the bzImage boot sector and setup code */ -#include "bzimage_header.c" - -address_t place_mbi(long int size) -/* Find space at the top of *low* memory for the MBI and associated red tape */ -{ - address_t start; - start = 0xa000 - size; - if (start < 0x9000 + sizeof(bzimage_bootsect) + sizeof(bzimage_setup)) { - printf("Fatal: command-lines too long: need %i, have %i bytes\n", - size, - 0x1000 - (sizeof(bzimage_bootsect) + sizeof(bzimage_setup))); - exit(1); - } - if (!quiet) { - printf("Placed MBI and strings (%p+%p)\n", - start, size); - } - return start; -} - -void make_bzImage(section_t *sections, - address_t entry, - address_t mbi, - FILE *fp) -/* Rework this list of sections into a bzImage and write it out to fp */ -{ - int i; - size_t offset; - section_t *s; - - /* Patch the kernel and mbi addresses into the setup code */ - *(address_t *)(bzimage_setup + BZ_ENTRY_OFFSET) = eswap(entry); - *(address_t *)(bzimage_setup + BZ_MBI_OFFSET) = eswap(mbi); - if (!quiet) printf("Kernel entry is %p, MBI is %p.\n", entry, mbi); - - /* Write out header and trampoline */ - if (fseek(fp, 0, SEEK_SET) < 0) { - printf("Fatal: error seeking in output file: %s\n", - strerror(errno)); - exit(1); - } - if (fwrite(bzimage_bootsect, sizeof(bzimage_bootsect), 1, fp) != 1) { - printf("Fatal: error writing to output file: %s\n", - strerror(errno)); - exit(1); - } - if (fwrite(bzimage_setup, sizeof(bzimage_setup), 1, fp) != 1) { - printf("Fatal: error writing to output file: %s\n", - strerror(errno)); - exit(1); - } - - if (!quiet) printf("Wrote bzImage header: %i + %i bytes.\n", - sizeof(bzimage_bootsect), sizeof(bzimage_setup)); - - /* Sorted list of sections below 1MB: write them out */ - for (s = sections, i = 0; s; s = s->next) { - if (s->start >= HIGHMEM_START) continue; - offset = (s->start - 0x9000); - if (fseek(fp, offset, SEEK_SET) < 0) { - printf("Fatal: error seeking in output file: %s\n", - strerror(errno)); - exit(1); - } - if (fwrite(s->buffer, s->size, 1, fp) != 1) { - printf("Fatal: error writing to output file: %s\n", - strerror(errno)); - exit(1); - } - i++; - } - - if (!quiet) printf("Wrote %i low-memory sections.\n", i); - - /* Sorted list of sections higher than 1MB: write them out */ - for (s = sections, i = 0; s; s = s->next) { - if (s->start < HIGHMEM_START) continue; - offset = (s->start - HIGHMEM_START) + BZ_SETUP_OFFSET; - if (fseek(fp, offset, SEEK_SET) < 0) { - printf("Fatal: error seeking in output file: %s\n", - strerror(errno)); - exit(1); - } - if (fwrite(s->buffer, s->size, 1, fp) != 1) { - printf("Fatal: error writing to output file: %s\n", - strerror(errno)); - exit(1); - } - i++; - } - - if (!quiet) printf("Wrote %i high-memory sections.\n", i); -} - - -/* - * EOF(buildimage.c) - */ |