File: [local] / sys / arch / alpha / stand / boot / devopen.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: devopen.c,v 1.8 2003/06/02 23:27:44 millert Exp $ */
/* $NetBSD: devopen.c,v 1.1 1995/11/23 02:39:37 cgd Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)devopen.c 8.1 (Berkeley) 6/10/93
*/
#include <lib/libsa/stand.h>
/*
* Decode the string 'fname', open the device and return the remaining
* file name if any.
*/
devopen(f, fname, file)
struct open_file *f;
const char *fname;
char **file; /* out */
{
register char *cp;
register char *ncp;
register struct devsw *dp;
register int c, i;
int ctlr = 0, unit = 0, part = 0;
char namebuf[20];
int rc;
cp = (char *)fname;
ncp = namebuf;
/* look for a string like 'disk(0,0,0)bsd' */
if (strchr(cp, '(')) {
while ((c = *cp) != '\0') {
if (c == '(') {
cp++;
break;
}
if (ncp < namebuf + sizeof(namebuf) - 1)
*ncp++ = c;
cp++;
}
/* get controller number */
if ((c = *cp) >= '0' && c <= '9') {
ctlr = c - '0';
c = *++cp;
}
if (c == ',') {
/* get SCSI device number */
if ((c = *++cp) >= '0' && c <= '9') {
unit = c - '0';
c = *++cp;
}
if (c == ',') {
/* get partition number */
if ((c = *++cp) >= '0' && c <= '9') {
part = c - '0';
c = *++cp;
}
}
}
if (c != ')')
goto defdev;
cp++;
*ncp = '\0';
} else {
defdev:
/* No valid device specification */
cp = (char *)fname;
ncp = namebuf;
dp = devsw;
ctlr = unit = part = 0;
goto fnd;
}
for (dp = devsw, i = 0; i < ndevs; dp++, i++)
if (dp->dv_name && strcmp(namebuf, dp->dv_name) == 0)
goto fnd;
printf("Unknown device '%s'\nKnown devices are:", namebuf);
for (dp = devsw, i = 0; i < ndevs; dp++, i++)
if (dp->dv_name)
printf(" %s", dp->dv_name);
printf("\n");
return (ENXIO);
fnd:
rc = (dp->dv_open)(f, ctlr, unit, part);
if (rc)
return (rc);
f->f_dev = dp;
if (file && *cp != '\0')
*file = cp;
return (0);
}