e2db2efb2e
to ensure trap code will work (that is 0 upto ${endkernel}) and leave the
rest to pmap_tlbmiss(). Mapping whole physmem into the kernel wired way
too many TLB entries, see
http://mail-index.netbsd.org/port-powerpc/2006/10/27/0000.html
for performance analysis. While there, be a bit more descriptive in
pmap_tlbmiss() comment and use macro instead of numeric constant.
OK by Simon Burge
386 lines
9.5 KiB
C
386 lines
9.5 KiB
C
/* $NetBSD: obs200_machdep.c,v 1.5 2006/11/29 19:56:47 freza Exp $ */
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/* Original: machdep.c,v 1.3 2005/01/17 17:24:09 shige 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: obs200_machdep.c,v 1.5 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/kernel.h>
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#include <sys/ksyms.h>
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#include <sys/mount.h>
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#include <sys/reboot.h>
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#include <sys/systm.h>
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#include <uvm/uvm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/obs200.h>
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#include <machine/century_bios.h>
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#include <powerpc/spr.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pciconf.h>
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#include <powerpc/ibm4xx/dcr405gp.h>
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#include "ksyms.h"
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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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char bootpath[256];
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extern paddr_t msgbuf_paddr;
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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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void initppc(u_int, u_int, char *, void *);
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int lcsplx(int);
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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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u_int32_t pllmode;
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u_int32_t psr;
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vaddr_t va;
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u_int memsize;
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/* Disable all external interrupts */
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mtdcr(DCR_UIC0_ER, 0);
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pllmode = mfdcr(DCR_CPC0_PLLMR);
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psr = mfdcr(DCR_CPC0_PSR);
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/* Setup board from BIOS */
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bios_board_init(info_block, startkernel);
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memsize = bios_board_memsize_get();
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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(OBS405_CONADDR, roundup(memsize, TLB_PG_SIZE),
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TLB_PG_SIZE, TLB_I | TLB_G);
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/* Initialize IBM405GPr CPU */
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ibm40x_memsize_init(memsize, startkernel);
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ibm4xx_init((void (*)(void))ext_intr);
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/*
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* Set the page size.
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*/
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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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bios_board_print();
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printf(" PLL Mode Register = 0x%08x\n", pllmode);
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printf(" Chip Pin Strapping Register = 0x%08x\n", psr);
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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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void
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consinit(void)
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{
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obs405_consinit(OBS200_COM_FREQ);
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}
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int
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lcsplx(int ipl)
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{
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return spllower(ipl); /* XXX */
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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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/*
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* cpu common startup
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*/
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ibm4xx_cpu_startup("OpenBlockS S/R IBM PowerPC 405GP Board");
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/*
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* Set up the board properties database.
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*/
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bios_board_info_set();
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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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/*
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* no fake mapiodev
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*/
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fake_mapiodev = 0;
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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;
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static char str[256];
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char *ap = str, *ap1 = ap;
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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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resettodr(); /* set wall clock */
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}
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splhigh();
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if (!cold && (howto & RB_DUMP))
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ibm4xx_dumpsys();
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doshutdownhooks();
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if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
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/* Power off here if we know how...*/
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}
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if (howto & RB_HALT) {
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printf("halted\n\n");
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#if 0
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goto reboot; /* XXX for now... */
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#endif
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#ifdef DDB
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printf("dropping to debugger\n");
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while(1)
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Debugger();
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#endif
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}
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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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/* flush cache for msgbuf */
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__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
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#if 0
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reboot:
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#endif
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ppc4xx_reset();
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printf("ppc4xx_reset() failed!\n");
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#ifdef DDB
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while(1)
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Debugger();
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#else
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while (1)
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/* nothing */;
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#endif
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}
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int
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pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
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{
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/*
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* We need to map the interrupt pin to the interrupt bit
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* in the UIC associated with it.
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*
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* This platform has 4 PCI devices.
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*
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# External IRQ Mappings:
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* dev 7 (Ext IRQ3): Realtek 8139 Ethernet
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* dev 8 (Ext IRQ0): PCI Connector
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*/
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static const int irqmap[15/*device*/][4/*pin*/] = {
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{ -1, -1, -1, -1 }, /* 1: none */
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{ -1, -1, -1, -1 }, /* 2: none */
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{ -1, -1, -1, -1 }, /* 3: none */
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{ -1, -1, -1, -1 }, /* 4: none */
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{ -1, -1, -1, -1 }, /* 5: none */
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{ -1, -1, -1, -1 }, /* 6: none */
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{ 3, -1, -1, -1 }, /* 7: none */
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{ 0, -1, -1, -1 }, /* 8: none */
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{ -1, -1, -1, -1 }, /* 9: none */
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{ -1, -1, -1, -1 }, /* 10: none */
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{ -1, -1, -1, -1 }, /* 11: none */
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{ -1, -1, -1, -1 }, /* 12: none */
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{ -1, -1, -1, -1 }, /* 13: none */
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{ -1, -1, -1, -1 }, /* 14: none */
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{ -1, -1, -1, -1 }, /* 15: none */
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};
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int pin, dev, irq;
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pin = pa->pa_intrpin;
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dev = pa->pa_device;
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*ihp = -1;
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/* if interrupt pin not used... */
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if (pin == 0)
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return 1;
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if (pin > 4) {
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printf("pci_intr_map: bad interrupt pin %d\n", pin);
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return 1;
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}
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if ((dev < 1) || (dev > 15)) {
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printf("pci_intr_map: bad device %d\n", dev);
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return 1;
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}
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if ((irq = irqmap[dev - 1][pin - 1]) == -1) {
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printf("pci_intr_map: no IRQ routing for device %d pin %d\n",
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dev, pin);
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return 1;
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}
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*ihp = irq + 25;
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return 0;
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}
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void
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pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin,
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int swiz, int *iline)
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{
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static const int ilinemap[15/*device*/] = {
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-1, -1, -1, -1, /* device 1 - 4 */
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-1, -1, 28, 25, /* device 5 - 8 */
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-1, -1, -1, -1, /* device 9 - 12 */
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-1, -1, -1, /* device 13 - 15 */
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};
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if (bus == 0) {
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if ((dev < 1) || (dev > 15)) {
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printf("pci_intr_map: bad device %d\n", dev);
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*iline = 0;
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return;
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}
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*iline = ilinemap[dev - 1];
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} else {
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*iline = 19 + ((swiz + dev + 1) & 3);
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}
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}
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