File: [local] / sys / arch / hp300 / stand / common / dcm.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:05:34 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: dcm.c,v 1.5 2006/08/17 06:31:10 miod Exp $ */
/* $NetBSD: dcm.c,v 1.2 1997/04/14 05:58:32 scottr Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
*
* @(#)dcm.c 8.1 (Berkeley) 6/10/93
*/
#ifdef DCMCONSOLE
#include <sys/param.h>
#include <hp300/dev/dcmreg.h>
#include "samachdep.h"
#include "consdefs.h"
#include "device.h"
struct dcmdevice *dcmcnaddr = NULL;
#define DCMCONUNIT 1 /* XXX */
void
dcmprobe(struct consdev *cp)
{
extern struct hp_hw sc_table[];
struct hp_hw *hw;
struct dcmdevice *dcm;
for (hw = sc_table; hw < &sc_table[MAXCTLRS]; hw++)
if (HW_ISDEV(hw, D_COMMDCM) && !badaddr((caddr_t)hw->hw_kva))
break;
if (!HW_ISDEV(hw, D_COMMDCM))
return;
dcmcnaddr = (struct dcmdevice *) hw->hw_kva;
dcm = dcmcnaddr;
switch (dcm->dcm_rsid) {
case DCMID:
cp->cn_pri = CN_NORMAL;
break;
case DCMID|DCMCON:
cp->cn_pri = CN_REMOTE;
break;
default:
break;
}
}
void
dcminit(struct consdev *cp)
{
struct dcmdevice *dcm = dcmcnaddr;
int port = DCMCONUNIT;
dcm->dcm_ic = IC_ID;
while (dcm->dcm_thead[port].ptr != dcm->dcm_ttail[port].ptr)
;
dcm->dcm_data[port].dcm_baud = BR_9600;
dcm->dcm_data[port].dcm_conf = LC_8BITS | LC_1STOP;
SEM_LOCK(dcm);
dcm->dcm_cmdtab[port].dcm_data |= CT_CON;
dcm->dcm_cr |= (1 << port);
SEM_UNLOCK(dcm);
DELAY(15000);
}
/* ARGSUSED */
int
dcmgetchar(dev_t dev)
{
#ifndef SMALL
struct dcmdevice *dcm = dcmcnaddr;
struct dcmrfifo *fifo;
struct dcmpreg *pp;
unsigned head;
int c, stat, port;
port = DCMCONUNIT;
pp = dcm_preg(dcm, port);
head = pp->r_head & RX_MASK;
if (head == (pp->r_tail & RX_MASK))
return(0);
fifo = &dcm->dcm_rfifos[3-port][head>>1];
c = fifo->data_char;
stat = fifo->data_stat;
pp->r_head = (head + 2) & RX_MASK;
SEM_LOCK(dcm);
stat = dcm->dcm_iir;
SEM_UNLOCK(dcm);
return(c);
#else
return(0);
#endif
}
/* ARGSUSED */
void
dcmputchar(dev_t dev, int c)
{
struct dcmdevice *dcm = dcmcnaddr;
struct dcmpreg *pp;
int timo;
unsigned tail;
int port, stat;
port = DCMCONUNIT;
pp = dcm_preg(dcm, port);
tail = pp->t_tail & TX_MASK;
timo = 50000;
while (tail != (pp->t_head & TX_MASK) && --timo)
;
dcm->dcm_tfifos[3-port][tail].data_char = c;
pp->t_tail = tail = (tail + 1) & TX_MASK;
SEM_LOCK(dcm);
dcm->dcm_cmdtab[port].dcm_data |= CT_TX;
dcm->dcm_cr |= (1 << port);
SEM_UNLOCK(dcm);
timo = 1000000;
while (tail != (pp->t_head & TX_MASK) && --timo)
;
SEM_LOCK(dcm);
stat = dcm->dcm_iir;
SEM_UNLOCK(dcm);
}
#endif