/* $NetBSD: machdep.c,v 1.31 2006/11/29 19:56:47 freza 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: machdep.c,v 1.31 2006/11/29 19:56:47 freza Exp $"); #include "opt_compat_netbsd.h" #include "opt_ddb.h" #include "opt_ipkdb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ksyms.h" #if defined(DDB) #include #include #endif #define TLB_PG_SIZE (16*1024*1024) /* * Global variables used here and there */ struct vm_map *exec_map = NULL; struct vm_map *mb_map = NULL; struct vm_map *phys_map = NULL; /* * This should probably be in autoconf! XXX */ char cpu_model[80]; char machine[] = MACHINE; /* from */ char machine_arch[] = MACHINE_ARCH; /* from */ extern struct user *proc0paddr; char bootpath[256]; paddr_t msgbuf_paddr; vaddr_t msgbuf_vaddr; #if NKSYMS || defined(DDB) || defined(LKM) void *startsym, *endsym; #endif int lcsplx(int); void initppc(u_int, u_int, char *, void *); static void dumpsys(void); static void install_extint(void (*)(void)); #define MEMREGIONS 8 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */ struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */ struct board_cfg_data board_data; void initppc(u_int startkernel, u_int endkernel, char *args, void *info_block) { 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 vaddr_t va; int exc, dbcr0; struct cpu_info * const ci = curcpu(); /* Disable all external interrupts */ mtdcr(DCR_UIC0_ER, 0); /* Initialize cache info for memcpy, etc. */ cpu_probe_cache(); /* Save info block */ memcpy(&board_data, info_block, sizeof(board_data)); memset(physmemr, 0, sizeof physmemr); memset(availmemr, 0, sizeof availmemr); physmemr[0].start = 0; physmemr[0].size = board_data.mem_size & ~PGOFSET; /* Lower memory reserved by eval board BIOS */ availmemr[0].start = startkernel; availmemr[0].size = board_data.mem_size - availmemr[0].start; /* Linear map kernel memory */ for (va = 0; va < endkernel; va += TLB_PG_SIZE) ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); /* Map console after physmem (see pmap_tlbmiss()) */ ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE), TLB_PG_SIZE, TLB_I | TLB_G); /* * Initialize lwp0 and current pcb and pmap pointers. */ lwp0.l_cpu = ci; lwp0.l_addr = proc0paddr; memset(lwp0.l_addr, 0, sizeof *lwp0.l_addr); curpcb = &proc0paddr->u_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 */ __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 */ install_extint(ext_intr); /* * 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... */ uvm_setpagesize(); /* * Initialize pmap module. */ pmap_bootstrap(startkernel, endkernel); #ifdef DEBUG printf("Board config data:\n"); printf(" usr_config_ver = %s\n", board_data.usr_config_ver); printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); printf(" mem_size = %u\n", board_data.mem_size); printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", board_data.mac_address_local[0], board_data.mac_address_local[1], board_data.mac_address_local[2], board_data.mac_address_local[3], board_data.mac_address_local[4], board_data.mac_address_local[5]); printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", board_data.mac_address_pci[0], board_data.mac_address_pci[1], board_data.mac_address_pci[2], board_data.mac_address_pci[3], board_data.mac_address_pci[4], board_data.mac_address_pci[5]); printf(" processor_speed = %u\n", board_data.processor_speed); printf(" plb_speed = %u\n", board_data.plb_speed); printf(" pci_speed = %u\n", board_data.pci_speed); #endif #if NKSYMS || defined(DDB) || defined(LKM) ksyms_init((int)((u_int)endsym - (u_int)startsym), startsym, endsym); #endif #ifdef DDB if (boothowto & RB_KDB) Debugger(); #endif #ifdef IPKDB /* * Now trap to IPKDB */ ipkdb_init(); if (boothowto & RB_KDB) ipkdb_connect(0); #endif } static void 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)); } /* * Machine dependent startup code. */ char msgbuf[MSGBUFSIZE]; void cpu_startup(void) { vaddr_t minaddr, maxaddr; prop_number_t pn; prop_data_t pd; char pbuf[9]; /* * 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((caddr_t)msgbuf_vaddr, round_page(MSGBUFSIZE)); #else initmsgbuf((caddr_t)msgbuf, round_page(MSGBUFSIZE)); #endif printf("%s%s", copyright, version); printf("Walnut PowerPC 405GP Evaluation Board\n"); format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); printf("total memory = %s\n", pbuf); minaddr = 0; /* * Allocate a submap for exec arguments. This map effectively * limits the number of processes exec'ing at any time. */ exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); /* * 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); /* * Set up the board properties dictionary. */ board_properties = prop_dictionary_create(); KASSERT(board_properties != NULL); pn = prop_number_create_integer(board_data.mem_size); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "mem-size", pn) == FALSE) panic("setting mem-size"); prop_object_release(pn); pd = prop_data_create_data_nocopy(board_data.mac_address_local, sizeof(board_data.mac_address_local)); KASSERT(pd != NULL); if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == FALSE) panic("setting emac0-mac-addr"); prop_object_release(pd); pd = prop_data_create_data_nocopy(board_data.mac_address_pci, sizeof(board_data.mac_address_pci)); KASSERT(pd != NULL); if (prop_dictionary_set(board_properties, "sip0-mac-addr", pd) == FALSE) panic("setting sip0-mac-addr"); prop_object_release(pd); pn = prop_number_create_integer(board_data.processor_speed); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "processor-frequency", pn) == FALSE) panic("setting processor-frequency"); prop_object_release(pn); /* * Now that we have VM, malloc()s are OK in bus_space. */ bus_space_mallocok(); fake_mapiodev = 0; } static void dumpsys(void) { printf("dumpsys: TBD\n"); } /* * Halt or reboot the machine after syncing/dumping according to howto. */ void cpu_reboot(int howto, char *what) { 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; }