summaryrefslogtreecommitdiffstats
path: root/arch/alpha/boot/tools
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/boot/tools')
-rw-r--r--arch/alpha/boot/tools/mkbb.c151
-rw-r--r--arch/alpha/boot/tools/objstrip.c281
2 files changed, 432 insertions, 0 deletions
diff --git a/arch/alpha/boot/tools/mkbb.c b/arch/alpha/boot/tools/mkbb.c
new file mode 100644
index 000000000000..23c7190b047c
--- /dev/null
+++ b/arch/alpha/boot/tools/mkbb.c
@@ -0,0 +1,151 @@
+/* This utility makes a bootblock suitable for the SRM console/miniloader */
+
+/* Usage:
+ * mkbb <device> <lxboot>
+ *
+ * Where <device> is the name of the device to install the bootblock on,
+ * and <lxboot> is the name of a bootblock to merge in. This bootblock
+ * contains the offset and size of the bootloader. It must be exactly
+ * 512 bytes long.
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+/* Minimal definition of disklabel, so we don't have to include
+ * asm/disklabel.h (confuses make)
+ */
+#ifndef MAXPARTITIONS
+#define MAXPARTITIONS 8 /* max. # of partitions */
+#endif
+
+#ifndef u8
+#define u8 unsigned char
+#endif
+
+#ifndef u16
+#define u16 unsigned short
+#endif
+
+#ifndef u32
+#define u32 unsigned int
+#endif
+
+struct disklabel {
+ u32 d_magic; /* must be DISKLABELMAGIC */
+ u16 d_type, d_subtype;
+ u8 d_typename[16];
+ u8 d_packname[16];
+ u32 d_secsize;
+ u32 d_nsectors;
+ u32 d_ntracks;
+ u32 d_ncylinders;
+ u32 d_secpercyl;
+ u32 d_secprtunit;
+ u16 d_sparespertrack;
+ u16 d_sparespercyl;
+ u32 d_acylinders;
+ u16 d_rpm, d_interleave, d_trackskew, d_cylskew;
+ u32 d_headswitch, d_trkseek, d_flags;
+ u32 d_drivedata[5];
+ u32 d_spare[5];
+ u32 d_magic2; /* must be DISKLABELMAGIC */
+ u16 d_checksum;
+ u16 d_npartitions;
+ u32 d_bbsize, d_sbsize;
+ struct d_partition {
+ u32 p_size;
+ u32 p_offset;
+ u32 p_fsize;
+ u8 p_fstype;
+ u8 p_frag;
+ u16 p_cpg;
+ } d_partitions[MAXPARTITIONS];
+};
+
+
+typedef union __bootblock {
+ struct {
+ char __pad1[64];
+ struct disklabel __label;
+ } __u1;
+ struct {
+ unsigned long __pad2[63];
+ unsigned long __checksum;
+ } __u2;
+ char bootblock_bytes[512];
+ unsigned long bootblock_quadwords[64];
+} bootblock;
+
+#define bootblock_label __u1.__label
+#define bootblock_checksum __u2.__checksum
+
+main(int argc, char ** argv)
+{
+ bootblock bootblock_from_disk;
+ bootblock bootloader_image;
+ int dev, fd;
+ int i;
+ int nread;
+
+ /* Make sure of the arg count */
+ if(argc != 3) {
+ fprintf(stderr, "Usage: %s device lxboot\n", argv[0]);
+ exit(0);
+ }
+
+ /* First, open the device and make sure it's accessible */
+ dev = open(argv[1], O_RDWR);
+ if(dev < 0) {
+ perror(argv[1]);
+ exit(0);
+ }
+
+ /* Now open the lxboot and make sure it's reasonable */
+ fd = open(argv[2], O_RDONLY);
+ if(fd < 0) {
+ perror(argv[2]);
+ close(dev);
+ exit(0);
+ }
+
+ /* Read in the lxboot */
+ nread = read(fd, &bootloader_image, sizeof(bootblock));
+ if(nread != sizeof(bootblock)) {
+ perror("lxboot read");
+ fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
+ exit(0);
+ }
+
+ /* Read in the bootblock from disk. */
+ nread = read(dev, &bootblock_from_disk, sizeof(bootblock));
+ if(nread != sizeof(bootblock)) {
+ perror("bootblock read");
+ fprintf(stderr, "expected %d, got %d\n", sizeof(bootblock), nread);
+ exit(0);
+ }
+
+ /* Swap the bootblock's disklabel into the bootloader */
+ bootloader_image.bootblock_label = bootblock_from_disk.bootblock_label;
+
+ /* Calculate the bootblock checksum */
+ bootloader_image.bootblock_checksum = 0;
+ for(i = 0; i < 63; i++) {
+ bootloader_image.bootblock_checksum +=
+ bootloader_image.bootblock_quadwords[i];
+ }
+
+ /* Write the whole thing out! */
+ lseek(dev, 0L, SEEK_SET);
+ if(write(dev, &bootloader_image, sizeof(bootblock)) != sizeof(bootblock)) {
+ perror("bootblock write");
+ exit(0);
+ }
+
+ close(fd);
+ close(dev);
+ exit(0);
+}
+
+
diff --git a/arch/alpha/boot/tools/objstrip.c b/arch/alpha/boot/tools/objstrip.c
new file mode 100644
index 000000000000..67beb1b45e4f
--- /dev/null
+++ b/arch/alpha/boot/tools/objstrip.c
@@ -0,0 +1,281 @@
+/*
+ * arch/alpha/boot/tools/objstrip.c
+ *
+ * Strip the object file headers/trailers from an executable (ELF or ECOFF).
+ *
+ * Copyright (C) 1996 David Mosberger-Tang.
+ */
+/*
+ * Converts an ECOFF or ELF object file into a bootable file. The
+ * object file must be a OMAGIC file (i.e., data and bss follow immediately
+ * behind the text). See DEC "Assembly Language Programmer's Guide"
+ * documentation for details. The SRM boot process is documented in
+ * the Alpha AXP Architecture Reference Manual, Second Edition by
+ * Richard L. Sites and Richard T. Witek.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <linux/a.out.h>
+#include <linux/coff.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#ifdef __ELF__
+# include <linux/elf.h>
+#endif
+
+/* bootfile size must be multiple of BLOCK_SIZE: */
+#define BLOCK_SIZE 512
+
+const char * prog_name;
+
+
+void
+usage (void)
+{
+ fprintf(stderr,
+ "usage: %s [-v] -p file primary\n"
+ " %s [-vb] file [secondary]\n", prog_name, prog_name);
+ exit(1);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+ size_t nwritten, tocopy, n, mem_size, fil_size, pad = 0;
+ int fd, ofd, i, j, verbose = 0, primary = 0;
+ char buf[8192], *inname;
+ struct exec * aout; /* includes file & aout header */
+ long offset;
+#ifdef __ELF__
+ struct elfhdr *elf;
+ struct elf_phdr *elf_phdr; /* program header */
+ unsigned long long e_entry;
+#endif
+
+ prog_name = argv[0];
+
+ for (i = 1; i < argc && argv[i][0] == '-'; ++i) {
+ for (j = 1; argv[i][j]; ++j) {
+ switch (argv[i][j]) {
+ case 'v':
+ verbose = ~verbose;
+ break;
+
+ case 'b':
+ pad = BLOCK_SIZE;
+ break;
+
+ case 'p':
+ primary = 1; /* make primary bootblock */
+ break;
+ }
+ }
+ }
+
+ if (i >= argc) {
+ usage();
+ }
+ inname = argv[i++];
+
+ fd = open(inname, O_RDONLY);
+ if (fd == -1) {
+ perror("open");
+ exit(1);
+ }
+
+ ofd = 1;
+ if (i < argc) {
+ ofd = open(argv[i++], O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ if (fd == -1) {
+ perror("open");
+ exit(1);
+ }
+ }
+
+ if (primary) {
+ /* generate bootblock for primary loader */
+
+ unsigned long bb[64], sum = 0;
+ struct stat st;
+ off_t size;
+ int i;
+
+ if (ofd == 1) {
+ usage();
+ }
+
+ if (fstat(fd, &st) == -1) {
+ perror("fstat");
+ exit(1);
+ }
+
+ size = (st.st_size + BLOCK_SIZE - 1) & ~(BLOCK_SIZE - 1);
+ memset(bb, 0, sizeof(bb));
+ strcpy((char *) bb, "Linux SRM bootblock");
+ bb[60] = size / BLOCK_SIZE; /* count */
+ bb[61] = 1; /* starting sector # */
+ bb[62] = 0; /* flags---must be 0 */
+ for (i = 0; i < 63; ++i) {
+ sum += bb[i];
+ }
+ bb[63] = sum;
+ if (write(ofd, bb, sizeof(bb)) != sizeof(bb)) {
+ perror("boot-block write");
+ exit(1);
+ }
+ printf("%lu\n", size);
+ return 0;
+ }
+
+ /* read and inspect exec header: */
+
+ if (read(fd, buf, sizeof(buf)) < 0) {
+ perror("read");
+ exit(1);
+ }
+
+#ifdef __ELF__
+ elf = (struct elfhdr *) buf;
+
+ if (elf->e_ident[0] == 0x7f && strncmp(elf->e_ident + 1, "ELF", 3) == 0) {
+ if (elf->e_type != ET_EXEC) {
+ fprintf(stderr, "%s: %s is not an ELF executable\n",
+ prog_name, inname);
+ exit(1);
+ }
+ if (!elf_check_arch(elf)) {
+ fprintf(stderr, "%s: is not for this processor (e_machine=%d)\n",
+ prog_name, elf->e_machine);
+ exit(1);
+ }
+ if (elf->e_phnum != 1) {
+ fprintf(stderr,
+ "%s: %d program headers (forgot to link with -N?)\n",
+ prog_name, elf->e_phnum);
+ }
+
+ e_entry = elf->e_entry;
+
+ lseek(fd, elf->e_phoff, SEEK_SET);
+ if (read(fd, buf, sizeof(*elf_phdr)) != sizeof(*elf_phdr)) {
+ perror("read");
+ exit(1);
+ }
+
+ elf_phdr = (struct elf_phdr *) buf;
+ offset = elf_phdr->p_offset;
+ mem_size = elf_phdr->p_memsz;
+ fil_size = elf_phdr->p_filesz;
+
+ /* work around ELF bug: */
+ if (elf_phdr->p_vaddr < e_entry) {
+ unsigned long delta = e_entry - elf_phdr->p_vaddr;
+ offset += delta;
+ mem_size -= delta;
+ fil_size -= delta;
+ elf_phdr->p_vaddr += delta;
+ }
+
+ if (verbose) {
+ fprintf(stderr, "%s: extracting %#016lx-%#016lx (at %lx)\n",
+ prog_name, (long) elf_phdr->p_vaddr,
+ elf_phdr->p_vaddr + fil_size, offset);
+ }
+ } else
+#endif
+ {
+ aout = (struct exec *) buf;
+
+ if (!(aout->fh.f_flags & COFF_F_EXEC)) {
+ fprintf(stderr, "%s: %s is not in executable format\n",
+ prog_name, inname);
+ exit(1);
+ }
+
+ if (aout->fh.f_opthdr != sizeof(aout->ah)) {
+ fprintf(stderr, "%s: %s has unexpected optional header size\n",
+ prog_name, inname);
+ exit(1);
+ }
+
+ if (N_MAGIC(*aout) != OMAGIC) {
+ fprintf(stderr, "%s: %s is not an OMAGIC file\n",
+ prog_name, inname);
+ exit(1);
+ }
+ offset = N_TXTOFF(*aout);
+ fil_size = aout->ah.tsize + aout->ah.dsize;
+ mem_size = fil_size + aout->ah.bsize;
+
+ if (verbose) {
+ fprintf(stderr, "%s: extracting %#016lx-%#016lx (at %lx)\n",
+ prog_name, aout->ah.text_start,
+ aout->ah.text_start + fil_size, offset);
+ }
+ }
+
+ if (lseek(fd, offset, SEEK_SET) != offset) {
+ perror("lseek");
+ exit(1);
+ }
+
+ if (verbose) {
+ fprintf(stderr, "%s: copying %lu byte from %s\n",
+ prog_name, (unsigned long) fil_size, inname);
+ }
+
+ tocopy = fil_size;
+ while (tocopy > 0) {
+ n = tocopy;
+ if (n > sizeof(buf)) {
+ n = sizeof(buf);
+ }
+ tocopy -= n;
+ if ((size_t) read(fd, buf, n) != n) {
+ perror("read");
+ exit(1);
+ }
+ do {
+ nwritten = write(ofd, buf, n);
+ if ((ssize_t) nwritten == -1) {
+ perror("write");
+ exit(1);
+ }
+ n -= nwritten;
+ } while (n > 0);
+ }
+
+ if (pad) {
+ mem_size = ((mem_size + pad - 1) / pad) * pad;
+ }
+
+ tocopy = mem_size - fil_size;
+ if (tocopy > 0) {
+ fprintf(stderr,
+ "%s: zero-filling bss and aligning to %lu with %lu bytes\n",
+ prog_name, pad, (unsigned long) tocopy);
+
+ memset(buf, 0x00, sizeof(buf));
+ do {
+ n = tocopy;
+ if (n > sizeof(buf)) {
+ n = sizeof(buf);
+ }
+ nwritten = write(ofd, buf, n);
+ if ((ssize_t) nwritten == -1) {
+ perror("write");
+ exit(1);
+ }
+ tocopy -= nwritten;
+ } while (tocopy > 0);
+ }
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 07:20:28 +0000