summaryrefslogtreecommitdiffstats
path: root/arch/alpha/boot/tools/mkbb.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/boot/tools/mkbb.c')
-rw-r--r--arch/alpha/boot/tools/mkbb.c152
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/alpha/boot/tools/mkbb.c b/arch/alpha/boot/tools/mkbb.c
deleted file mode 100644
index 1185778..0000000
--- a/arch/alpha/boot/tools/mkbb.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* 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 <stdlib.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
-
-int 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 %zd, 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 %zd, 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);
-}
-
-