NetBSD-5.0.2/sys/arch/powerpc/ibm4xx/ibm4xx_machdep.c
/* $NetBSD: ibm4xx_machdep.c,v 1.8 2008/07/02 17:28:56 ad Exp $ */
/* Original: ibm40x_machdep.c,v 1.3 2005/01/17 17:19:36 shige Exp $ */
/*
* Copyright 2001, 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ibm4xx_machdep.c,v 1.8 2008/07/02 17:28:56 ad Exp $");
#include "opt_compat_netbsd.h"
#include "opt_ddb.h"
#include "opt_kgdb.h"
#include "opt_ipkdb.h"
#include <sys/param.h>
#include <sys/msgbuf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <uvm/uvm_extern.h>
#if defined(DDB)
#include <machine/db_machdep.h>
#include <ddb/db_extern.h>
#endif
#if defined(KGDB)
#include <sys/kgdb.h>
#endif
#if defined(IPKDB)
#include <ipkdb/ipkdb.h>
#endif
#include <machine/powerpc.h>
#include <powerpc/spr.h>
#include <machine/trap.h>
/*
* Global variables used here and there
*/
extern struct user *proc0paddr;
paddr_t msgbuf_paddr;
vaddr_t msgbuf_vaddr;
char msgbuf[MSGBUFSIZE];
/*
* ibm4xx_init:
*/
void
ibm4xx_init(void (*handler)(void))
{
extern int defaulttrap, defaultsize;
extern int sctrap, scsize;
extern int alitrap, alisize;
extern int dsitrap, dsisize;
extern int isitrap, isisize;
extern int mchktrap, mchksize;
extern int tlbimiss4xx, tlbim4size;
extern int tlbdmiss4xx, tlbdm4size;
extern int pitfitwdog, pitfitwdogsize;
extern int debugtrap, debugsize;
extern int errata51handler, errata51size;
#ifdef DDB
extern int ddblow, ddbsize;
#endif
#ifdef IPKDB
extern int ipkdblow, ipkdbsize;
#endif
uintptr_t exc;
struct cpu_info * const ci = curcpu();
/* Initialize cache info for memcpy, etc. */
cpu_probe_cache();
/*
* Initialize lwp0 and current pcb and pmap pointers.
*/
KASSERT(ci != NULL);
KASSERT(curcpu() == ci);
lwp0.l_cpu = ci;
lwp0.l_addr = proc0paddr;
memset(lwp0.l_addr, 0, sizeof *lwp0.l_addr);
KASSERT(lwp0.l_cpu != NULL);
curpcb = &proc0paddr->u_pcb;
memset(curpcb, 0, sizeof(*curpcb));
curpcb->pcb_pm = pmap_kernel();
/*
* Set up trap vectors
*/
for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100)
switch (exc) {
default:
memcpy((void *)exc, &defaulttrap, (size_t)&defaultsize);
break;
case EXC_EXI:
/*
* This one is (potentially) installed during autoconf
*/
break;
case EXC_SC:
memcpy((void *)EXC_SC, &sctrap, (size_t)&scsize);
break;
case EXC_ALI:
memcpy((void *)EXC_ALI, &alitrap, (size_t)&alisize);
break;
case EXC_DSI:
memcpy((void *)EXC_DSI, &dsitrap, (size_t)&dsisize);
break;
case EXC_ISI:
memcpy((void *)EXC_ISI, &isitrap, (size_t)&isisize);
break;
case EXC_MCHK:
memcpy((void *)EXC_MCHK, &mchktrap, (size_t)&mchksize);
break;
case EXC_ITMISS:
memcpy((void *)EXC_ITMISS, &tlbimiss4xx,
(size_t)&tlbim4size);
break;
case EXC_DTMISS:
memcpy((void *)EXC_DTMISS, &tlbdmiss4xx,
(size_t)&tlbdm4size);
break;
/*
* EXC_PIT, EXC_FIT, EXC_WDOG handlers
* are spaced by 0x10 bytes only..
*/
case EXC_PIT:
memcpy((void *)EXC_PIT, &pitfitwdog,
(size_t)&pitfitwdogsize);
break;
case EXC_DEBUG:
memcpy((void *)EXC_DEBUG, &debugtrap,
(size_t)&debugsize);
break;
case EXC_DTMISS|EXC_ALI:
/* PPC405GP Rev D errata item 51 */
memcpy((void *)(EXC_DTMISS|EXC_ALI), &errata51handler,
(size_t)&errata51size);
break;
#if defined(DDB) || defined(IPKDB)
case EXC_PGM:
#if defined(DDB)
memcpy((void *)exc, &ddblow, (size_t)&ddbsize);
#elif defined(IPKDB)
memcpy((void *)exc, &ipkdblow, (size_t)&ipkdbsize);
#endif
#endif /* DDB | IPKDB */
break;
}
__syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100);
mtspr(SPR_EVPR, 0); /* Set Exception vector base */
consinit();
/* Handle trap instruction as PGM exception */
{
int dbcr0;
__asm volatile("mfspr %0,%1":"=r"(dbcr0):"K"(SPR_DBCR0));
__asm volatile("mtspr %0,%1"::"K"(SPR_DBCR0),"r"(dbcr0 & ~DBCR0_TDE));
}
/*
* external interrupt handler install
*/
if (handler)
ibm4xx_install_extint(handler);
/*
* Now enable translation (and machine checks/recoverable interrupts).
*/
__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0; isync"
: : "r"(0), "K"(PSL_IR|PSL_DR));
/* XXXX PSL_ME - With ME set kernel gets stuck... */
KASSERT(curcpu() == ci);
}
void
ibm4xx_install_extint(void (*handler)(void))
{
extern int extint, extsize;
extern u_long extint_call;
u_long offset = (u_long)handler - (u_long)&extint_call;
int msr;
#ifdef DIAGNOSTIC
if (offset > 0x1ffffff)
panic("install_extint: too far away");
#endif
__asm volatile ("mfmsr %0; wrteei 0" : "=r"(msr));
extint_call = (extint_call & 0xfc000003) | offset;
memcpy((void *)EXC_EXI, &extint, (size_t)&extsize);
__syncicache((void *)&extint_call, sizeof extint_call);
__syncicache((void *)EXC_EXI, (int)&extsize);
__asm volatile ("mtmsr %0" :: "r"(msr));
}
/*
* ibm4xx_cpu_startup:
* Machine dependent startup code.
*/
void
ibm4xx_cpu_startup(const char *model)
{
vaddr_t minaddr, maxaddr;
char pbuf[9];
KASSERT(curcpu() != NULL);
KASSERT(lwp0.l_cpu != NULL);
KASSERT(curcpu()->ci_intstk != 0);
KASSERT(curcpu()->ci_intrdepth == -1);
/*
* Initialize error message buffer (at end of core).
*/
#if 0 /* For some reason this fails... --Artem
* Besides, do we really have to put it at the end of core?
* Let's use static buffer for now
*/
if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE),
0, UVM_KMF_VAONLY)))
panic("startup: no room for message buffer");
for (i = 0; i < btoc(MSGBUFSIZE); i++)
pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE,
msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE);
initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE));
#else
initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE));
#endif
printf("%s%s", copyright, version);
if (model != NULL)
printf("Model: %s\n", model);
format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
printf("total memory = %s\n", pbuf);
minaddr = 0;
/*
* Allocate a submap for physio
*/
phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
VM_PHYS_SIZE, 0, false, NULL);
/*
* No need to allocate an mbuf cluster submap. Mbuf clusters
* are allocated via the pool allocator, and we use direct-mapped
* pool pages.
*/
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
printf("avail memory = %s\n", pbuf);
}
/*
* ibm4xx_dumpsys:
* Crash dump handling.
*/
void
ibm4xx_dumpsys(void)
{
printf("dumpsys: TBD\n");
}