426 lines
11 KiB
C
426 lines
11 KiB
C
/* $NetBSD: machdep.c,v 1.16 2024/03/05 14:15:31 thorpej Exp $ */
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/*
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.16 2024/03/05 14:15:31 thorpej Exp $");
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#include "opt_compat_netbsd.h"
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#include "opt_ddb.h"
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#include "opt_ddbparam.h"
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#include "opt_inet.h"
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#include "opt_ccitt.h"
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#include "opt_ns.h"
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/exec.h>
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#include <sys/extent.h>
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#include <sys/intr.h>
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#include <sys/kernel.h>
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#include <sys/kgdb.h>
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#include <sys/ksyms.h>
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#include <sys/mbuf.h>
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#include <sys/mount.h>
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#include <sys/msgbuf.h>
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#include <sys/proc.h>
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#include <sys/reboot.h>
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#include <sys/syscallargs.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/powerpc.h>
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#include <machine/pmppc.h>
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#include <powerpc/db_machdep.h>
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#include <powerpc/pio.h>
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#include <powerpc/pmap.h>
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#include <powerpc/trap.h>
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#include <powerpc/oea/bat.h>
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#include <powerpc/pic/picvar.h>
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#include <ddb/db_extern.h>
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#include <dev/cons.h>
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#include <dev/ic/cpc700reg.h>
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#include <dev/ic/cpc700uic.h>
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#include "com.h"
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#if (NCOM > 0)
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#include <sys/termios.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#endif
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#include "ksyms.h"
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struct powerpc_bus_space pmppc_mem_tag = {
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_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
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0, 0, 0xffffffff,
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NULL,
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};
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struct powerpc_bus_space pmppc_pci_io_tag = {
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_BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE,
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0, CPC_PCI_IO_BASE, 0xffffffff,
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NULL,
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};
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static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)]
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__attribute__((aligned(8)));
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#ifdef KGDB
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char kgdb_devname[] = KGDB_DEVNAME;
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int comkgdbaddr = KGDB_DEVADDR;
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int comkgdbrate = KGDB_DEVRATE;
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#ifndef KGDB_DEVMODE
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#define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
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#endif
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int comkgdbmode = KGDB_DEVMODE;
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void kgdb_port_init(void);
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#endif /* KGDB */
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/*
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* Global variables used here and there
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*/
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struct mem_region physmemr[2], availmemr[2];
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struct a_config a_config;
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void initppc(u_int, u_int, u_int, void *); /* Called from locore */
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void pmppc_setup(void);
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void setleds(int leds);
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void
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initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo)
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{
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extern void consinit(void);
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extern u_long ticks_per_sec;
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extern unsigned char edata[], end[];
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memset(&edata, 0, end - edata); /* clear BSS */
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pmppc_setup();
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physmemr[0].start = 0;
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physmemr[0].size = a_config.a_mem_size;
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physmemr[1].size = 0;
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availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
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availmemr[0].size = a_config.a_mem_size - availmemr[0].start;
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availmemr[1].size = 0;
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#ifdef BOOTHOWTO
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/*
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* boothowto
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*/
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boothowto = BOOTHOWTO;
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#endif
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if (bus_space_init(&pmppc_mem_tag, "iomem",
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ex_storage[0], sizeof(ex_storage[0])))
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panic("bus_space_init failed");
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/*
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* Initialize the BAT registers
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*/
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oea_batinit(
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PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */
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CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */
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CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */
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0);
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/*
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* Set up trap vectors
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*/
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oea_init(NULL);
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/*
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* Get CPU clock
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*/
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ticks_per_sec = a_config.a_bus_freq;
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ticks_per_sec /= 4; /* 4 cycles per DEC tick */
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cpu_timebase = ticks_per_sec;
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/*
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* Set up console.
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*/
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consinit(); /* XXX should not be here */
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printf("console set up\n");
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uvm_md_init();
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/*
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* Initialize pmap module.
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*/
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pmap_bootstrap(startkernel, endkernel);
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#ifdef KGDB
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kgdb_port_init();
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if (boothowto & RB_KDB) {
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kgdb_debug_init = 1;
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kgdb_connect(1);
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}
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#endif
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}
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void
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mem_regions(struct mem_region **mem, struct mem_region **avail)
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{
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*mem = physmemr;
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*avail = availmemr;
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}
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/*
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* Machine dependent startup code.
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*/
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void
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cpu_startup(void)
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{
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oea_startup(NULL);
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/*
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* Now that we have VM, malloc()s are OK in bus_space.
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*/
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bus_space_mallocok();
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/* Set up the PCI bus tag. */
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if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0))
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panic("bus_space_init pci failed");
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/* Set up interrupt controller */
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cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE,
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CPC_INTR_MASK(PMPPC_I_ETH_INT), 0);
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pic_init();
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(void)setup_cpc700();
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oea_install_extint(pic_ext_intr);
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#if 0
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/* XXX doesn't seem to be needed anymore */
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/*
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* Now allow hardware interrupts.
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*/
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__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
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: "=r"(msr) : "K"(PSL_EE));
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#endif
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}
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/*
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* consinit
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* Initialize system console.
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*/
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void
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consinit(void)
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{
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static int initted;
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#if (NCOM > 0)
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bus_space_tag_t tag;
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#endif
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if (initted)
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return;
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initted = 1;
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#if (NCOM > 0)
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tag = &pmppc_mem_tag;
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if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq),
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COM_TYPE_NORMAL,
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((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)))
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panic("can't init serial console");
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else
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return;
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#endif
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panic("console device missing -- serial console not in kernel");
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/* Of course, this is moot if there is no console... */
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}
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#ifdef KGDB
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void
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kgdb_port_init(void)
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{
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#if (NCOM > 0)
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if(!strcmp(kgdb_devname, "com")) {
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bus_space_tag_t tag = &pmppc_mem_tag;
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com_kgdb_attach(tag, comkgdbaddr, comkgdbrate,
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CPC_COM_SPEED(a_config.a_bus_freq),
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COM_TYPE_NORMAL, comkgdbmode);
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}
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#endif
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}
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#endif
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/*
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* Halt or reboot the machine after syncing/dumping according to howto.
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*/
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void
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cpu_reboot(int howto, char *what)
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{
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static int syncing;
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static char str[256];
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char *ap = str, *ap1 = ap;
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extern void disable_intr(void);
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boothowto = howto;
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if (!cold && !(howto & RB_NOSYNC) && !syncing) {
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syncing = 1;
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vfs_shutdown(); /* sync */
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}
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splhigh();
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if (howto & RB_HALT) {
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doshutdownhooks();
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pmf_system_shutdown(boothowto);
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printf("halted\n\n");
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while(1);
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}
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if (!cold && (howto & RB_DUMP))
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oea_dumpsys();
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doshutdownhooks();
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pmf_system_shutdown(boothowto);
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printf("rebooting\n\n");
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if (what && *what) {
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if (strlen(what) > sizeof str - 5)
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printf("boot string too large, ignored\n");
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else {
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strcpy(str, what);
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ap1 = ap = str + strlen(str);
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*ap++ = ' ';
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}
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}
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*ap++ = '-';
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if (howto & RB_SINGLE)
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*ap++ = 's';
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if (howto & RB_KDB)
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*ap++ = 'd';
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*ap++ = 0;
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if (ap[-2] == '-')
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*ap1 = 0;
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disable_intr();
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/* Write the two byte reset sequence to the reset register. */
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out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1);
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out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2);
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while (1);
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}
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void
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setleds(int leds)
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{
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out8(PMPPC_LEDS, leds);
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}
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void
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pmppc_setup(void)
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{
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uint config0, config1;
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config0 = in8(PMPPC_CONFIG0);
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config1 = in8(PMPPC_CONFIG1);
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/* from page 2-8 in the Artesyn User's manual */
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a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM;
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a_config.a_has_ecc = (config1 & 0x40) != 0;
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switch (config1 & 0x30) {
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case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break;
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case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break;
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case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break;
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case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break;
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}
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a_config.a_l2_cache = (config1 >> 2) & 3;
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switch (config1 & 0x03) {
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case 0x00: a_config.a_bus_freq = 66666666; break;
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case 0x01: a_config.a_bus_freq = 83333333; break;
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case 0x02: a_config.a_bus_freq = 100000000; break;
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case 0x03: a_config.a_bus_freq = 0; break; /* XXX */
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}
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a_config.a_is_monarch = (config0 & 0x80) == 0;
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a_config.a_has_eth = (config0 & 0x20) != 0;
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a_config.a_has_rtc = (config0 & 0x10) == 0;
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switch (config0 & 0x0c) {
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case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break;
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case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break;
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case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break;
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case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break;
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}
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switch (config0 & 0x03) {
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case 0x00: a_config.a_flash_width = 64; break;
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case 0x01: a_config.a_flash_width = 32; break;
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case 0x02: a_config.a_flash_width = 16; break;
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case 0x03: a_config.a_flash_width = 0; break;
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}
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}
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