File: [local] / sys / arch / alpha / stand / headersize.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:49 2008 UTC (16 years, 5 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
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/* $OpenBSD: headersize.c,v 1.8 2005/08/10 16:58:42 todd Exp $ */
/* $NetBSD: headersize.c,v 1.5 1996/09/23 04:32:59 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#define ELFSIZE 64
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/exec.h>
#include <sys/exec_ecoff.h>
#include <sys/exec_elf.h>
#include <unistd.h>
#include <stdio.h>
#include <err.h>
#define HDR_BUFSIZE 512
int
main(argc, argv)
int argc;
char *argv[];
{
char buf[HDR_BUFSIZE], *fname;
#ifdef ALPHA_BOOT_ELF
Elf64_Ehdr *elfp;
#endif
int fd;
unsigned long loadaddr;
if (argc != 3)
errx(1, "must be given two arguments (load addr, file name)");
if (sscanf(argv[1], "%lx", &loadaddr) != 1)
errx(1, "load addr argument (%s) not valid", argv[1]);
fname = argv[2];
if ((fd = open(fname, O_RDONLY, 0)) == -1)
err(1, "%s: open failed", fname);
if (read(fd, &buf, HDR_BUFSIZE) < HDR_BUFSIZE)
err(1, "%s: read failed", fname);
#ifdef ALPHA_BOOT_ELF
elfp = (Elf64_Ehdr *)buf;
#endif
#ifdef ALPHA_BOOT_ELF
if (memcmp(ELFMAG, elfp->e_ident, SELFMAG) == 0) {
Elf64_Phdr phdr;
/* XXX assume the first segment is the one we want */
if (lseek(fd, elfp->e_phoff, SEEK_SET) == -1)
err(1, "%s: lseek phdr failed", fname);
if (read(fd, (void *)&phdr, sizeof(phdr)) != sizeof(phdr))
err(1, "%s: read phdr failed", fname);
printf("%ld\n", phdr.p_offset + (loadaddr - phdr.p_vaddr));
}
else
#endif
errx(1, "%s: bad magic number", fname);
close(fd);
exit(0);
}