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File: [local] / sys / arch / hp300 / stand / common / dca.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:05:34 2008 UTC (16 years, 5 months ago) by nbrk
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) |
/* $OpenBSD: dca.c,v 1.6 2006/08/17 06:31:10 miod Exp $ */ /* $NetBSD: dca.c,v 1.10 1996/10/06 01:42:48 mycroft 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. * * @(#)dca.c 8.1 (Berkeley) 6/10/93 */ #ifdef DCACONSOLE #include <sys/param.h> #include <hp300/dev/dcareg.h> #include "samachdep.h" #include "consdefs.h" struct dcadevice *dcacnaddr = 0; #define DCACONSCODE 9 /* XXX */ void dcaprobe(struct consdev *cp) { struct dcadevice *dca; dcacnaddr = (struct dcadevice *) sctoaddr(DCACONSCODE); if (badaddr((char *)dcacnaddr)) return; dca = dcacnaddr; switch (dca->dca_id) { case DCAID0: case DCAID1: cp->cn_pri = CN_NORMAL; break; case DCAID0 | DCACON: case DCAID1 | DCACON: cp->cn_pri = CN_REMOTE; break; default: break; } } void dcainit(struct consdev *cp) { struct dcadevice *dca = dcacnaddr; dca->dca_reset = 0xFF; DELAY(100); dca->dca_ic = 0; dca->dca_cfcr = CFCR_DLAB; dca->dca_data = DCABRD(9600) & 0xFF; dca->dca_ier = DCABRD(9600) >> 8; dca->dca_cfcr = CFCR_8BITS; dca->dca_fifo = FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1; dca->dca_mcr = MCR_DTR | MCR_RTS; } /* ARGSUSED */ int dcagetchar(dev_t dev) { #ifndef SMALL struct dcadevice *dca = dcacnaddr; short stat; int c; if (((stat = dca->dca_lsr) & LSR_RXRDY) == 0) return(0); c = dca->dca_data; return(c); #else return(0); #endif } /* ARGSUSED */ void dcaputchar(dev_t dev, int c) { struct dcadevice *dca = dcacnaddr; int timo; short stat; /* wait a reasonable time for the transmitter to come ready */ timo = 50000; while (((stat = dca->dca_lsr) & LSR_TXRDY) == 0 && --timo) ; dca->dca_data = c; /* wait for this transmission to complete */ timo = 1000000; while (((stat = dca->dca_lsr) & LSR_TXRDY) == 0 && --timo) ; } #endif