File: [local] / sys / arch / vax / vax / findcpu.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:46 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: findcpu.c,v 1.12 2006/08/27 16:55:41 miod Exp $ */
/* $NetBSD: findcpu.c,v 1.5 1999/08/23 19:10:43 ragge Exp $ */
/*
* Copyright (c) 1994, 1998 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed at Ludd, University of Lule}.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <machine/sid.h>
#include <machine/nexus.h>
#include <machine/mtpr.h>
#include <machine/cpu.h>
/*
* We set up some information about the machine we're
* running on and thus initializes/uses vax_cputype and vax_boardtype.
* There should be no need to change/reinitialize these variables
* outside of this routine, they should be read only!
*/
int vax_cputype; /* highest byte of SID register */
int vax_bustype; /* holds/defines all busses on this machine */
int vax_boardtype; /* machine dependend, combination of SID and SIE */
int vax_cpudata = 0; /* contents of the SID register */
int vax_siedata = 0; /* contents of the SIE register */
int vax_confdata; /* machine dependend, configuration/setup data */
void findcpu(void);
/*
* Try to figure out which type of system this is.
*/
void
findcpu(void)
{
vax_cpudata = mfpr(PR_SID);
vax_cputype = vax_cpudata >> 24;
vax_boardtype = vax_cputype << 24;
switch (vax_cputype) {
case VAX_TYP_780:
vax_bustype = VAX_SBIBUS;
break;
case VAX_TYP_750:
vax_bustype = VAX_CMIBUS;
break;
case VAX_TYP_790:
vax_bustype = VAX_ABUS;
break;
case VAX_TYP_UV2:
case VAX_TYP_CVAX:
case VAX_TYP_RIGEL:
case VAX_TYP_MARIAH:
case VAX_TYP_NVAX:
case VAX_TYP_SOC:
vax_siedata = *(int *)(0x20040004); /* SIE address */
vax_boardtype |= vax_siedata >> 24;
switch (vax_boardtype) {
case VAX_BTYP_420: /* They are very similar */
case VAX_BTYP_410:
case VAX_BTYP_43:
case VAX_BTYP_46:
case VAX_BTYP_48:
case VAX_BTYP_IS1:
vax_confdata = *(int *)(0x20020000);
vax_bustype = VAX_VSBUS;
break;
case VAX_BTYP_49:
vax_confdata = *(int *)(0x25800000);
vax_bustype = VAX_VSBUS;
break;
case VAX_BTYP_VXT:
vax_confdata = *(int *)(0x200c0000);
vax_bustype = VAX_VXTBUS;
break;
case VAX_BTYP_9CC:
case VAX_BTYP_9RR:
case VAX_BTYP_1202:
case VAX_BTYP_1302:
vax_bustype = VAX_XMIBUS;
break;
case VAX_BTYP_60:
case VAX_BTYP_630:
case VAX_BTYP_650:
case VAX_BTYP_660:
case VAX_BTYP_670:
case VAX_BTYP_1301:
case VAX_BTYP_1303:
case VAX_BTYP_1305:
vax_bustype = VAX_IBUS;
break;
}
break;
case VAX_TYP_8SS:
vax_boardtype = VAX_BTYP_8000;
vax_bustype = VAX_BIBUS;
break;
case VAX_TYP_8NN:
case VAX_TYP_8PS:
vax_boardtype = VAX_BTYP_8800;
vax_bustype = VAX_NBIBUS;
break;
default:
/* CPU not supported, just give up */
asm("halt");
}
}