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/* $OpenBSD: wrtvid.c,v 1.4 2003/06/01 17:00:37 deraadt Exp $ */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#define __DBINTERFACE_PRIVATE
#include <db.h>
#include "disklabel.h"
/* disklabel.h is in current dir because of my
cross-compile env. if <machine/disklabel.h>
is newer, copy it here.
*/
main(argc, argv)
int argc;
char **argv;
{
struct cpu_disklabel *pcpul;
struct stat stat;
int exe_file;
int tape_vid;
int tape_exe;
unsigned int exe_addr;
unsigned short exe_addr_u;
unsigned short exe_addr_l;
char *filename;
char fileext[256];
char filebase[256];
if (argc == 1)
filename = "a.out";
else
filename = argv[1];
exe_file = open(filename, O_RDONLY,0444);
if (exe_file == -1) {
perror(filename);
exit(2);
}
snprintf(fileext, sizeof fileext, "%c%cboot", filename[4], filename[5]);
tape_vid = open(fileext, O_WRONLY|O_CREAT|O_TRUNC, 0644);
snprintf(fileext, sizeof fileext, "boot%c%c", filename[4], filename[5]);
tape_exe = open(fileext, O_WRONLY|O_CREAT|O_TRUNC,0644);
pcpul = (struct cpu_disklabel *)malloc(sizeof(struct cpu_disklabel));
bzero(pcpul, sizeof(struct cpu_disklabel));
pcpul->version = 1;
memcpy(pcpul->vid_id, "M88K", sizeof pcpul->vid_id);
fstat(exe_file, &stat);
/* size in 256 byte blocks round up after a.out header removed */
if (filename[5] == 't' ) {
pcpul->vid_oss = 1;
}else {
pcpul->vid_oss = 2;
}
pcpul->vid_osl = (((stat.st_size -0x20) +511) / 512) *2;
lseek(exe_file, 0x14, SEEK_SET);
read(exe_file, &exe_addr, 4);
/* check this, it may not work in both endian. */
/* No, it doesn't. Use a big endian machine for now. SPM */
{
union {
struct s {
unsigned short s1;
unsigned short s2;
} s;
unsigned long l;
} a;
a.l = exe_addr;
pcpul->vid_osa_u = a.s.s1;
pcpul->vid_osa_l = a.s.s2;
}
pcpul->vid_cas = 1;
pcpul->vid_cal = 1;
/* do not want to write past end of structure, not null terminated */
strncpy(pcpul->vid_mot, "MOTOROLA", 8);
if (BYTE_ORDER != BIG_ENDIAN)
swabvid(pcpul);
pcpul->cfg_rec = 0x100;
pcpul->cfg_psm = 0x200;
if (BYTE_ORDER != BIG_ENDIAN)
swabcfg(pcpul);
write(tape_vid, pcpul, sizeof(struct cpu_disklabel));
free(pcpul);
copy_exe(exe_file, tape_exe);
close(exe_file);
close(tape_vid);
close(tape_exe);
return (0);
}
#define BUF_SIZ 512
copy_exe(exe_file, tape_exe)
int exe_file, tape_exe;
{
char *buf;
int cnt = 0;
buf = (char *)malloc(BUF_SIZ);
lseek (exe_file, 0x20, SEEK_SET);
while (BUF_SIZ == (cnt = read(exe_file, buf, BUF_SIZ))) {
write(tape_exe, buf, cnt);
}
bzero(&buf[cnt], BUF_SIZ-cnt);
write(tape_exe, buf, BUF_SIZ);
}
swabvid(pcpul)
struct cpu_disklabel *pcpul;
{
M_32_SWAP(pcpul->vid_oss);
M_16_SWAP(pcpul->vid_osl);
/*
M_16_SWAP(pcpul->vid_osa_u);
M_16_SWAP(pcpul->vid_osa_l);
*/
M_32_SWAP(pcpul->vid_cas);
}
swabcfg(pcpul)
struct cpu_disklabel *pcpul;
{
M_16_SWAP(pcpul->cfg_atm);
M_16_SWAP(pcpul->cfg_prm);
M_16_SWAP(pcpul->cfg_atm);
M_16_SWAP(pcpul->cfg_rec);
M_16_SWAP(pcpul->cfg_trk);
M_16_SWAP(pcpul->cfg_psm);
M_16_SWAP(pcpul->cfg_shd);
M_16_SWAP(pcpul->cfg_pcom);
M_16_SWAP(pcpul->cfg_rwcc);
M_16_SWAP(pcpul->cfg_ecc);
M_16_SWAP(pcpul->cfg_eatm);
M_16_SWAP(pcpul->cfg_eprm);
M_16_SWAP(pcpul->cfg_eatw);
M_16_SWAP(pcpul->cfg_rsvc1);
M_16_SWAP(pcpul->cfg_rsvc2);
}
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