File: [local] / sys / arch / alpha / alpha / mainbus.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:42 2008 UTC (16 years, 3 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: mainbus.c,v 1.13 2005/10/17 18:34:22 miod Exp $ */
/* $NetBSD: mainbus.c,v 1.27 1998/06/24 01:10:35 ross Exp $ */
/*
* Copyright (c) 1994, 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/conf.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <machine/cpuconf.h>
/* Definition of the mainbus driver. */
static int mbmatch(struct device *, void *, void *);
static void mbattach(struct device *, struct device *, void *);
static int mbprint(void *, const char *);
struct cfattach mainbus_ca = {
sizeof(struct device), mbmatch, mbattach
};
struct cfdriver mainbus_cd = {
NULL, "mainbus", DV_DULL
};
/* There can be only one. */
int mainbus_found;
static int
mbmatch(parent, cf, aux)
struct device *parent;
void *cf;
void *aux;
{
if (mainbus_found)
return (0);
return (1);
}
static void
mbattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct mainbus_attach_args ma;
struct pcs *pcsp;
int i, cpuattachcnt;
extern int alpha_cpus;
mainbus_found = 1;
printf("\n");
/*
* Try to find and attach all of the CPUs in the machine.
*/
cpuattachcnt = 0;
for (i = 0; i < hwrpb->rpb_pcs_cnt; i++) {
pcsp = LOCATE_PCS(hwrpb, i);
if ((pcsp->pcs_flags & PCS_PP) == 0)
continue;
ma.ma_name = "cpu";
ma.ma_slot = i;
if (config_found(self, &ma, mbprint) != NULL)
cpuattachcnt++;
}
if (alpha_cpus != cpuattachcnt)
printf("WARNING: %d cpus in machine, %d attached\n",
alpha_cpus, cpuattachcnt);
if (platform.iobus != NULL) {
ma.ma_name = platform.iobus;
ma.ma_slot = 0; /* meaningless */
config_found(self, &ma, mbprint);
}
}
static int
mbprint(aux, pnp)
void *aux;
const char *pnp;
{
struct mainbus_attach_args *ma = aux;
if (pnp)
printf("%s at %s", ma->ma_name, pnp);
return (UNCONF);
}