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File: [local] / sys / dev / cninit.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:09:36 2008 UTC (16 years, 4 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: cninit.c,v 1.6 2003/06/02 23:28:01 millert Exp $ */ /* $NetBSD: cninit.c,v 1.2 1995/04/11 22:08:10 pk 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. * * from: Utah $Hdr: cons.c 1.7 92/01/21$ * * @(#)cons.c 8.2 (Berkeley) 1/12/94 */ #include <sys/param.h> #include <sys/systm.h> #include <sys/proc.h> #include <sys/user.h> #include <sys/buf.h> #include <sys/ioctl.h> #include <sys/tty.h> #include <sys/file.h> #include <sys/conf.h> #include <sys/vnode.h> #include <dev/cons.h> void cninit() { struct consdev *cp; /* * Collect information about all possible consoles * and find the one with highest priority */ for (cp = constab; cp->cn_probe; cp++) { (*cp->cn_probe)(cp); if (cp->cn_pri > CN_DEAD && (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) cn_tab = cp; } /* * No console, we can handle it */ if ((cp = cn_tab) == NULL) return; /* * Turn on console */ (*cp->cn_init)(cp); } int cnset(dev) dev_t dev; { struct consdev *cp; /* * Look for the specified console device and use it. */ for (cp = constab; cp->cn_probe; cp++) { if (major(cp->cn_dev) == major(dev)) { /* short-circuit noop */ if (cp == cn_tab && cp->cn_dev == dev) return (0); if (cp->cn_pri > CN_DEAD) { cn_tab = cp; cp->cn_dev = dev; /* Turn it on. */ (cp->cn_init)(cp); return (0); } break; } } return (1); }