/* $NetBSD: ibm4xx_machdep.c,v 1.15 2011/01/18 01:02:54 matt 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 __KERNEL_RCSID(0, "$NetBSD: ibm4xx_machdep.c,v 1.15 2011/01/18 01:02:54 matt Exp $"); #include "opt_compat_netbsd.h" #include "opt_ddb.h" #include "opt_kgdb.h" #include "opt_ipkdb.h" #include #include #include #include #if defined(DDB) #include #include #endif #if defined(KGDB) #include #endif #if defined(IPKDB) #include #endif #include #include #include #include #include /* * Global variables used here and there */ 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; curpcb = lwp_getpcb(&lwp0); memset(curpcb, 0, sizeof(struct pcb)); 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_idepth == -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, 0); 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"); }