File: [local] / sys / arch / luna88k / luna88k / m8820x.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:06:27 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: m8820x.c,v 1.13 2006/10/30 14:32:27 aoyama Exp $ */
/*
* Copyright (c) 2004, Miodrag Vallat.
*
* 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.
*
* 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.
*/
/*
* Copyright (c) 2001 Steve Murphree, Jr.
* Copyright (c) 1996 Nivas Madhur
* 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 by Nivas Madhur.
* 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.
*
*/
/*
* Mach Operating System
* Copyright (c) 1993-1991 Carnegie Mellon University
* Copyright (c) 1991 OMRON Corporation
* All Rights Reserved.
*
* 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 AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON AND OMRON DISCLAIM 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 <uvm/uvm_extern.h>
#include <machine/asm_macro.h>
#include <machine/board.h>
#include <machine/cmmu.h>
#include <machine/cpu.h>
#include <machine/m8820x.h>
/*
* This routine sets up the CPU/CMMU configuration.
*/
void
m8820x_setup_board_config()
{
struct m8820x_cmmu *cmmu;
u_int num;
m8820x_cmmu[0].cmmu_regs = (void *)CMMU_I0;
m8820x_cmmu[1].cmmu_regs = (void *)CMMU_D0;
m8820x_cmmu[2].cmmu_regs = (void *)CMMU_I1;
m8820x_cmmu[3].cmmu_regs = (void *)CMMU_D1;
m8820x_cmmu[4].cmmu_regs = (void *)CMMU_I2;
m8820x_cmmu[5].cmmu_regs = (void *)CMMU_D2;
m8820x_cmmu[6].cmmu_regs = (void *)CMMU_I3;
m8820x_cmmu[7].cmmu_regs = (void *)CMMU_D3;
/*
* Probe CMMU address to discover which CPU slots are populated.
* On the luna88k, badaddr() returns 'good' on unpopulated slots,
* so we check the CMMU type value for each CMMU register address.
*/
cmmu = m8820x_cmmu;
for (num = 0; num < 8; num++) {
volatile unsigned *cr = m8820x_cmmu[num].cmmu_regs;
int type;
type = CMMU_TYPE(cr[CMMU_IDR]);
if (type != M88200_ID && type != M88204_ID)
break;
}
max_cpus = num >> 1;
max_cmmus = max_cpus << 1;
cmmu_shift = 1; /* fixed 2:1 configuration */
/*
* Now that we know which CMMUs are there, report every association
*/
for (num = 0; num < max_cpus; num++) {
volatile unsigned *cr;
int type;
cr = m8820x_cmmu[num << cmmu_shift].cmmu_regs;
m88k_cpus[num].ci_alive = 1; /* This cpu installed... */
type = CMMU_TYPE(cr[CMMU_IDR]);
printf("CPU%d is associated to %d MC8820%c CMMUs\n",
num, 1 << cmmu_shift, type == M88204_ID ? '4' : '0');
}
}
/*
* Find out the CPU number from accessing CMMU
* Better be at splhigh, or even better, with interrupts
* disabled.
*/
#define ILLADDRESS 0x3ffffff0 /* any faulty address for luna88k2 */
cpuid_t
m8820x_cpu_number()
{
u_int cmmu;
u_int i;
CMMU_LOCK;
for (i = 0; i < 10; i++) {
/* clear CMMU P-bus status registers */
for (cmmu = 0; cmmu < max_cmmus; cmmu++) {
if (CMMU_MODE(cmmu) != INST_CMMU)
m8820x_cmmu[cmmu].cmmu_regs[CMMU_PFSR] = 0;
}
/* access faulting address */
badaddr((vaddr_t)ILLADDRESS, 4);
/* check which CMMU is reporting the fault */
for (cmmu = 0; cmmu < max_cmmus; cmmu++) {
if (CMMU_MODE(cmmu) != INST_CMMU &&
CMMU_PFSR_FAULT(m8820x_cmmu[cmmu].
cmmu_regs[CMMU_PFSR]) != CMMU_PFSR_SUCCESS) {
/* clean register, just in case... */
m8820x_cmmu[cmmu].cmmu_regs[CMMU_PFSR] = 0;
CMMU_UNLOCK;
return cmmu >> 1;
}
}
}
CMMU_UNLOCK;
panic("m8820x_cpu_number: could not determine my cpu number");
}