563 lines
15 KiB
C
563 lines
15 KiB
C
/* $NetBSD: machdep.c,v 1.31 2006/11/29 19:56:47 freza Exp $ */
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/*
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* Copyright 2001, 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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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 1.31 2006/11/29 19:56:47 freza Exp $");
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#include "opt_compat_netbsd.h"
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#include "opt_ddb.h"
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#include "opt_ipkdb.h"
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/exec.h>
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#include <sys/malloc.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/sa.h>
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#include <sys/syscallargs.h>
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#include <sys/syslog.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/user.h>
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#include <sys/boot_flag.h>
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#include <sys/ksyms.h>
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#include <uvm/uvm_extern.h>
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#include <net/netisr.h>
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#include <prop/proplib.h>
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#include <machine/bus.h>
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#include <machine/powerpc.h>
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#include <machine/trap.h>
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#include <machine/walnut.h>
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#include <powerpc/spr.h>
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#include <powerpc/ibm4xx/dcr405gp.h>
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#include <machine/bus.h>
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#include <dev/cons.h>
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#include "ksyms.h"
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#if defined(DDB)
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#include <machine/db_machdep.h>
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#include <ddb/db_extern.h>
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#endif
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#define TLB_PG_SIZE (16*1024*1024)
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/*
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* Global variables used here and there
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*/
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struct vm_map *exec_map = NULL;
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struct vm_map *mb_map = NULL;
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struct vm_map *phys_map = NULL;
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/*
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* This should probably be in autoconf! XXX
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*/
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char cpu_model[80];
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char machine[] = MACHINE; /* from <machine/param.h> */
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char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */
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extern struct user *proc0paddr;
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char bootpath[256];
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paddr_t msgbuf_paddr;
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vaddr_t msgbuf_vaddr;
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#if NKSYMS || defined(DDB) || defined(LKM)
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void *startsym, *endsym;
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#endif
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int lcsplx(int);
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void initppc(u_int, u_int, char *, void *);
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static void dumpsys(void);
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static void install_extint(void (*)(void));
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#define MEMREGIONS 8
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struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */
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struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */
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struct board_cfg_data board_data;
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void
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initppc(u_int startkernel, u_int endkernel, char *args, void *info_block)
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{
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extern int defaulttrap, defaultsize;
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extern int sctrap, scsize;
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extern int alitrap, alisize;
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extern int dsitrap, dsisize;
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extern int isitrap, isisize;
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extern int mchktrap, mchksize;
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extern int tlbimiss4xx, tlbim4size;
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extern int tlbdmiss4xx, tlbdm4size;
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extern int pitfitwdog, pitfitwdogsize;
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extern int debugtrap, debugsize;
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extern int errata51handler, errata51size;
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#ifdef DDB
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extern int ddblow, ddbsize;
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#endif
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#ifdef IPKDB
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extern int ipkdblow, ipkdbsize;
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#endif
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vaddr_t va;
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int exc, dbcr0;
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struct cpu_info * const ci = curcpu();
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/* Disable all external interrupts */
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mtdcr(DCR_UIC0_ER, 0);
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/* Initialize cache info for memcpy, etc. */
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cpu_probe_cache();
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/* Save info block */
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memcpy(&board_data, info_block, sizeof(board_data));
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memset(physmemr, 0, sizeof physmemr);
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memset(availmemr, 0, sizeof availmemr);
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physmemr[0].start = 0;
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physmemr[0].size = board_data.mem_size & ~PGOFSET;
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/* Lower memory reserved by eval board BIOS */
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availmemr[0].start = startkernel;
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availmemr[0].size = board_data.mem_size - availmemr[0].start;
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/* Linear map kernel memory */
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for (va = 0; va < endkernel; va += TLB_PG_SIZE)
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ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
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/* Map console after physmem (see pmap_tlbmiss()) */
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ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE),
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TLB_PG_SIZE, TLB_I | TLB_G);
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/*
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* Initialize lwp0 and current pcb and pmap pointers.
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*/
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lwp0.l_cpu = ci;
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lwp0.l_addr = proc0paddr;
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memset(lwp0.l_addr, 0, sizeof *lwp0.l_addr);
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curpcb = &proc0paddr->u_pcb;
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curpcb->pcb_pm = pmap_kernel();
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/*
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* Set up trap vectors
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*/
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for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100)
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switch (exc) {
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default:
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memcpy((void *)exc, &defaulttrap, (size_t)&defaultsize);
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break;
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case EXC_EXI:
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/*
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* This one is (potentially) installed during autoconf
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*/
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break;
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case EXC_SC:
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memcpy((void *)EXC_SC, &sctrap, (size_t)&scsize);
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break;
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case EXC_ALI:
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memcpy((void *)EXC_ALI, &alitrap, (size_t)&alisize);
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break;
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case EXC_DSI:
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memcpy((void *)EXC_DSI, &dsitrap, (size_t)&dsisize);
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break;
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case EXC_ISI:
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memcpy((void *)EXC_ISI, &isitrap, (size_t)&isisize);
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break;
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case EXC_MCHK:
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memcpy((void *)EXC_MCHK, &mchktrap, (size_t)&mchksize);
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break;
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case EXC_ITMISS:
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memcpy((void *)EXC_ITMISS, &tlbimiss4xx,
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(size_t)&tlbim4size);
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break;
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case EXC_DTMISS:
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memcpy((void *)EXC_DTMISS, &tlbdmiss4xx,
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(size_t)&tlbdm4size);
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break;
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/*
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* EXC_PIT, EXC_FIT, EXC_WDOG handlers
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* are spaced by 0x10 bytes only..
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*/
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case EXC_PIT:
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memcpy((void *)EXC_PIT, &pitfitwdog,
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(size_t)&pitfitwdogsize);
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break;
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case EXC_DEBUG:
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memcpy((void *)EXC_DEBUG, &debugtrap,
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(size_t)&debugsize);
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break;
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case EXC_DTMISS|EXC_ALI:
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/* PPC405GP Rev D errata item 51 */
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memcpy((void *)(EXC_DTMISS|EXC_ALI), &errata51handler,
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(size_t)&errata51size);
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break;
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#if defined(DDB) || defined(IPKDB)
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case EXC_PGM:
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#if defined(DDB)
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memcpy((void *)exc, &ddblow, (size_t)&ddbsize);
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#elif defined(IPKDB)
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memcpy((void *)exc, &ipkdblow, (size_t)&ipkdbsize);
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#endif
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#endif /* DDB | IPKDB */
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break;
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}
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__syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100);
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mtspr(SPR_EVPR, 0); /* Set Exception vector base */
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consinit();
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/* Handle trap instruction as PGM exception */
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__asm volatile("mfspr %0,%1":"=r"(dbcr0):"K"(SPR_DBCR0));
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__asm volatile("mtspr %0,%1"::"K"(SPR_DBCR0),"r"(dbcr0 & ~DBCR0_TDE));
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/*
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* external interrupt handler install
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*/
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install_extint(ext_intr);
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/*
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* Now enable translation (and machine checks/recoverable interrupts).
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*/
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__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0; isync"
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: : "r"(0), "K"(PSL_IR|PSL_DR));
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/* XXXX PSL_ME - With ME set kernel gets stuck... */
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uvm_setpagesize();
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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 DEBUG
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printf("Board config data:\n");
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printf(" usr_config_ver = %s\n", board_data.usr_config_ver);
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printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver);
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printf(" mem_size = %u\n", board_data.mem_size);
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printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n",
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board_data.mac_address_local[0], board_data.mac_address_local[1],
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board_data.mac_address_local[2], board_data.mac_address_local[3],
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board_data.mac_address_local[4], board_data.mac_address_local[5]);
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printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n",
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board_data.mac_address_pci[0], board_data.mac_address_pci[1],
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board_data.mac_address_pci[2], board_data.mac_address_pci[3],
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board_data.mac_address_pci[4], board_data.mac_address_pci[5]);
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printf(" processor_speed = %u\n", board_data.processor_speed);
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printf(" plb_speed = %u\n", board_data.plb_speed);
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printf(" pci_speed = %u\n", board_data.pci_speed);
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#endif
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#if NKSYMS || defined(DDB) || defined(LKM)
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ksyms_init((int)((u_int)endsym - (u_int)startsym), startsym, endsym);
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#endif
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#ifdef DDB
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if (boothowto & RB_KDB)
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Debugger();
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#endif
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#ifdef IPKDB
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/*
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* Now trap to IPKDB
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*/
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ipkdb_init();
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if (boothowto & RB_KDB)
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ipkdb_connect(0);
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#endif
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}
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static void
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install_extint(void (*handler)(void))
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{
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extern int extint, extsize;
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extern u_long extint_call;
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u_long offset = (u_long)handler - (u_long)&extint_call;
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int msr;
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#ifdef DIAGNOSTIC
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if (offset > 0x1ffffff)
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panic("install_extint: too far away");
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#endif
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__asm volatile ("mfmsr %0; wrteei 0" : "=r"(msr));
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extint_call = (extint_call & 0xfc000003) | offset;
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memcpy((void *)EXC_EXI, &extint, (size_t)&extsize);
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__syncicache((void *)&extint_call, sizeof extint_call);
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__syncicache((void *)EXC_EXI, (int)&extsize);
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__asm volatile ("mtmsr %0" :: "r"(msr));
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}
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/*
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* Machine dependent startup code.
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*/
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char msgbuf[MSGBUFSIZE];
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void
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cpu_startup(void)
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{
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vaddr_t minaddr, maxaddr;
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prop_number_t pn;
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prop_data_t pd;
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char pbuf[9];
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/*
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* Initialize error message buffer (at end of core).
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*/
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#if 0 /* For some reason this fails... --Artem
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* Besides, do we really have to put it at the end of core?
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* Let's use static buffer for now
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*/
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if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0,
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UVM_KMF_VAONLY)))
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panic("startup: no room for message buffer");
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for (i = 0; i < btoc(MSGBUFSIZE); i++)
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pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE,
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msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE);
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initmsgbuf((caddr_t)msgbuf_vaddr, round_page(MSGBUFSIZE));
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#else
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initmsgbuf((caddr_t)msgbuf, round_page(MSGBUFSIZE));
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#endif
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printf("%s%s", copyright, version);
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printf("Walnut PowerPC 405GP Evaluation Board\n");
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format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
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printf("total memory = %s\n", pbuf);
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minaddr = 0;
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/*
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* Allocate a submap for exec arguments. This map effectively
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* limits the number of processes exec'ing at any time.
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*/
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exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
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16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL);
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/*
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* Allocate a submap for physio
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*/
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phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
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VM_PHYS_SIZE, 0, FALSE, NULL);
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/*
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* No need to allocate an mbuf cluster submap. Mbuf clusters
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* are allocated via the pool allocator, and we use direct-mapped
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* pool pages.
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*/
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format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
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printf("avail memory = %s\n", pbuf);
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/*
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* Set up the board properties dictionary.
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*/
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board_properties = prop_dictionary_create();
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KASSERT(board_properties != NULL);
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pn = prop_number_create_integer(board_data.mem_size);
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KASSERT(pn != NULL);
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if (prop_dictionary_set(board_properties, "mem-size", pn) == FALSE)
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panic("setting mem-size");
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prop_object_release(pn);
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pd = prop_data_create_data_nocopy(board_data.mac_address_local,
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sizeof(board_data.mac_address_local));
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KASSERT(pd != NULL);
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if (prop_dictionary_set(board_properties, "emac0-mac-addr",
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pd) == FALSE)
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panic("setting emac0-mac-addr");
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prop_object_release(pd);
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pd = prop_data_create_data_nocopy(board_data.mac_address_pci,
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sizeof(board_data.mac_address_pci));
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KASSERT(pd != NULL);
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if (prop_dictionary_set(board_properties, "sip0-mac-addr",
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pd) == FALSE)
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panic("setting sip0-mac-addr");
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prop_object_release(pd);
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pn = prop_number_create_integer(board_data.processor_speed);
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KASSERT(pn != NULL);
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if (prop_dictionary_set(board_properties, "processor-frequency",
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pn) == FALSE)
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panic("setting processor-frequency");
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prop_object_release(pn);
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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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fake_mapiodev = 0;
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}
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static void
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dumpsys(void)
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{
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printf("dumpsys: TBD\n");
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}
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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;
|
|
static char str[256];
|
|
char *ap = str, *ap1 = ap;
|
|
|
|
boothowto = howto;
|
|
if (!cold && !(howto & RB_NOSYNC) && !syncing) {
|
|
syncing = 1;
|
|
vfs_shutdown(); /* sync */
|
|
resettodr(); /* set wall clock */
|
|
}
|
|
|
|
splhigh();
|
|
|
|
if (!cold && (howto & RB_DUMP))
|
|
dumpsys();
|
|
|
|
doshutdownhooks();
|
|
|
|
if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
|
|
/* Power off here if we know how...*/
|
|
}
|
|
|
|
if (howto & RB_HALT) {
|
|
printf("halted\n\n");
|
|
|
|
goto reboot; /* XXX for now... */
|
|
|
|
#ifdef DDB
|
|
printf("dropping to debugger\n");
|
|
while(1)
|
|
Debugger();
|
|
#endif
|
|
}
|
|
|
|
printf("rebooting\n\n");
|
|
if (what && *what) {
|
|
if (strlen(what) > sizeof str - 5)
|
|
printf("boot string too large, ignored\n");
|
|
else {
|
|
strcpy(str, what);
|
|
ap1 = ap = str + strlen(str);
|
|
*ap++ = ' ';
|
|
}
|
|
}
|
|
*ap++ = '-';
|
|
if (howto & RB_SINGLE)
|
|
*ap++ = 's';
|
|
if (howto & RB_KDB)
|
|
*ap++ = 'd';
|
|
*ap++ = 0;
|
|
if (ap[-2] == '-')
|
|
*ap1 = 0;
|
|
|
|
/* flush cache for msgbuf */
|
|
__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
|
|
|
|
reboot:
|
|
ppc4xx_reset();
|
|
|
|
printf("ppc4xx_reset() failed!\n");
|
|
#ifdef DDB
|
|
while(1)
|
|
Debugger();
|
|
#else
|
|
while (1)
|
|
/* nothing */;
|
|
#endif
|
|
}
|
|
|
|
int
|
|
lcsplx(int ipl)
|
|
{
|
|
|
|
return spllower(ipl); /* XXX */
|
|
}
|
|
|
|
void
|
|
mem_regions(struct mem_region **mem, struct mem_region **avail)
|
|
{
|
|
|
|
*mem = physmemr;
|
|
*avail = availmemr;
|
|
}
|