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machdep.c revision 1.9.2.2
      1  1.9.2.2    skrll /*	$NetBSD: machdep.c,v 1.9.2.2 2004/09/18 14:34:02 skrll Exp $	*/
      2      1.1      scw 
      3      1.1      scw /*
      4      1.1      scw  * Copyright 2001, 2002 Wasabi Systems, Inc.
      5      1.1      scw  * All rights reserved.
      6      1.1      scw  *
      7      1.1      scw  * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
      8      1.1      scw  *
      9      1.1      scw  * Redistribution and use in source and binary forms, with or without
     10      1.1      scw  * modification, are permitted provided that the following conditions
     11      1.1      scw  * are met:
     12      1.1      scw  * 1. Redistributions of source code must retain the above copyright
     13      1.1      scw  *    notice, this list of conditions and the following disclaimer.
     14      1.1      scw  * 2. Redistributions in binary form must reproduce the above copyright
     15      1.1      scw  *    notice, this list of conditions and the following disclaimer in the
     16      1.1      scw  *    documentation and/or other materials provided with the distribution.
     17      1.1      scw  * 3. All advertising materials mentioning features or use of this software
     18      1.1      scw  *    must display the following acknowledgement:
     19      1.1      scw  *      This product includes software developed for the NetBSD Project by
     20      1.1      scw  *      Wasabi Systems, Inc.
     21      1.1      scw  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22      1.1      scw  *    or promote products derived from this software without specific prior
     23      1.1      scw  *    written permission.
     24      1.1      scw  *
     25      1.1      scw  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26      1.1      scw  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27      1.1      scw  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28      1.1      scw  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29      1.1      scw  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30      1.1      scw  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31      1.1      scw  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32      1.1      scw  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33      1.1      scw  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34      1.1      scw  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35      1.1      scw  * POSSIBILITY OF SUCH DAMAGE.
     36      1.1      scw  */
     37      1.1      scw 
     38      1.1      scw /*
     39      1.1      scw  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
     40      1.1      scw  * Copyright (C) 1995, 1996 TooLs GmbH.
     41      1.1      scw  * All rights reserved.
     42      1.1      scw  *
     43      1.1      scw  * Redistribution and use in source and binary forms, with or without
     44      1.1      scw  * modification, are permitted provided that the following conditions
     45      1.1      scw  * are met:
     46      1.1      scw  * 1. Redistributions of source code must retain the above copyright
     47      1.1      scw  *    notice, this list of conditions and the following disclaimer.
     48      1.1      scw  * 2. Redistributions in binary form must reproduce the above copyright
     49      1.1      scw  *    notice, this list of conditions and the following disclaimer in the
     50      1.1      scw  *    documentation and/or other materials provided with the distribution.
     51      1.1      scw  * 3. All advertising materials mentioning features or use of this software
     52      1.1      scw  *    must display the following acknowledgement:
     53      1.1      scw  *	This product includes software developed by TooLs GmbH.
     54      1.1      scw  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     55      1.1      scw  *    derived from this software without specific prior written permission.
     56      1.1      scw  *
     57      1.1      scw  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     58      1.1      scw  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     59      1.1      scw  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     60      1.1      scw  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     61      1.1      scw  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     62      1.1      scw  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     63      1.1      scw  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     64      1.1      scw  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     65      1.1      scw  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     66      1.1      scw  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     67      1.1      scw  */
     68      1.1      scw 
     69  1.9.2.1    skrll #include <sys/cdefs.h>
     70  1.9.2.2    skrll __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.9.2.2 2004/09/18 14:34:02 skrll Exp $");
     71  1.9.2.1    skrll 
     72      1.1      scw #include "opt_compat_netbsd.h"
     73      1.1      scw #include "opt_ddb.h"
     74      1.1      scw #include "opt_ipkdb.h"
     75      1.1      scw 
     76      1.1      scw #include <sys/param.h>
     77      1.1      scw #include <sys/buf.h>
     78      1.1      scw #include <sys/exec.h>
     79      1.1      scw #include <sys/malloc.h>
     80      1.1      scw #include <sys/mbuf.h>
     81      1.1      scw #include <sys/mount.h>
     82      1.1      scw #include <sys/msgbuf.h>
     83      1.1      scw #include <sys/proc.h>
     84      1.1      scw #include <sys/reboot.h>
     85      1.3  thorpej #include <sys/sa.h>
     86      1.1      scw #include <sys/syscallargs.h>
     87      1.1      scw #include <sys/syslog.h>
     88      1.1      scw #include <sys/systm.h>
     89      1.1      scw #include <sys/kernel.h>
     90      1.1      scw #include <sys/user.h>
     91      1.1      scw #include <sys/boot_flag.h>
     92      1.1      scw #include <sys/properties.h>
     93      1.9    ragge #include <sys/ksyms.h>
     94      1.1      scw 
     95      1.1      scw #include <uvm/uvm_extern.h>
     96      1.1      scw 
     97      1.1      scw #include <net/netisr.h>
     98      1.1      scw 
     99      1.1      scw #include <machine/bus.h>
    100      1.1      scw #include <machine/powerpc.h>
    101      1.1      scw #include <machine/trap.h>
    102      1.1      scw #include <machine/walnut.h>
    103      1.1      scw 
    104      1.1      scw #include <powerpc/spr.h>
    105      1.7  hannken #include <powerpc/ibm4xx/dcr405gp.h>
    106      1.1      scw #include <machine/bus.h>
    107      1.1      scw 
    108      1.1      scw #include <dev/cons.h>
    109      1.1      scw 
    110      1.9    ragge #include "ksyms.h"
    111      1.9    ragge 
    112      1.9    ragge #if defined(DDB)
    113      1.1      scw #include <machine/db_machdep.h>
    114      1.1      scw #include <ddb/db_extern.h>
    115      1.1      scw #endif
    116      1.1      scw 
    117      1.1      scw /*
    118      1.1      scw  * Global variables used here and there
    119      1.1      scw  */
    120      1.1      scw struct vm_map *exec_map = NULL;
    121      1.1      scw struct vm_map *mb_map = NULL;
    122      1.1      scw struct vm_map *phys_map = NULL;
    123      1.1      scw 
    124      1.1      scw /*
    125      1.1      scw  * This should probably be in autoconf!				XXX
    126      1.1      scw  */
    127      1.1      scw char cpu_model[80];
    128      1.1      scw char machine[] = MACHINE;		/* from <machine/param.h> */
    129      1.1      scw char machine_arch[] = MACHINE_ARCH;	/* from <machine/param.h> */
    130      1.1      scw 
    131      1.1      scw extern struct user *proc0paddr;
    132      1.1      scw 
    133      1.1      scw char bootpath[256];
    134      1.1      scw paddr_t msgbuf_paddr;
    135      1.1      scw vaddr_t msgbuf_vaddr;
    136      1.1      scw 
    137      1.9    ragge #if NKSYMS || defined(DDB) || defined(LKM)
    138      1.1      scw void *startsym, *endsym;
    139      1.1      scw #endif
    140      1.1      scw 
    141      1.1      scw int lcsplx(int);
    142      1.1      scw void initppc(u_int, u_int, char *, void *);
    143      1.1      scw 
    144      1.1      scw static void dumpsys(void);
    145      1.1      scw static void install_extint(void (*)(void));
    146      1.1      scw 
    147      1.1      scw #define MEMREGIONS	8
    148      1.1      scw struct mem_region physmemr[MEMREGIONS];		/* Hard code memory */
    149      1.1      scw struct mem_region availmemr[MEMREGIONS];	/* Who's supposed to set these up? */
    150      1.1      scw 
    151      1.1      scw struct board_cfg_data board_data;
    152      1.1      scw struct propdb *board_info = NULL;
    153      1.1      scw 
    154      1.1      scw void
    155      1.1      scw initppc(u_int startkernel, u_int endkernel, char *args, void *info_block)
    156      1.1      scw {
    157      1.1      scw 	extern int defaulttrap, defaultsize;
    158      1.1      scw 	extern int sctrap, scsize;
    159      1.1      scw 	extern int alitrap, alisize;
    160      1.1      scw 	extern int dsitrap, dsisize;
    161      1.1      scw 	extern int isitrap, isisize;
    162      1.1      scw 	extern int mchktrap, mchksize;
    163      1.1      scw 	extern int tlbimiss4xx, tlbim4size;
    164      1.1      scw 	extern int tlbdmiss4xx, tlbdm4size;
    165      1.1      scw 	extern int pitfitwdog, pitfitwdogsize;
    166      1.1      scw 	extern int debugtrap, debugsize;
    167      1.1      scw 	extern int errata51handler, errata51size;
    168      1.1      scw #ifdef DDB
    169      1.1      scw 	extern int ddblow, ddbsize;
    170      1.1      scw #endif
    171      1.1      scw #ifdef IPKDB
    172      1.1      scw 	extern int ipkdblow, ipkdbsize;
    173      1.1      scw #endif
    174  1.9.2.2    skrll 	int exc, dbcr0;
    175      1.6     matt 	struct cpu_info * const ci = curcpu();
    176      1.1      scw 
    177      1.1      scw 	/* Disable all external interrupts */
    178      1.1      scw 	mtdcr(DCR_UIC0_ER, 0);
    179      1.1      scw 
    180      1.1      scw         /* Initialize cache info for memcpy, etc. */
    181      1.1      scw         cpu_probe_cache();
    182      1.1      scw 
    183      1.1      scw 	/* Save info block */
    184      1.1      scw 	memcpy(&board_data, info_block, sizeof(board_data));
    185      1.1      scw 
    186      1.1      scw 	memset(physmemr, 0, sizeof physmemr);
    187      1.1      scw 	memset(availmemr, 0, sizeof availmemr);
    188      1.1      scw 	physmemr[0].start = 0;
    189      1.1      scw 	physmemr[0].size = board_data.mem_size & ~PGOFSET;
    190      1.1      scw 	/* Lower memory reserved by eval board BIOS */
    191      1.1      scw 	availmemr[0].start = startkernel;
    192      1.1      scw 	availmemr[0].size = board_data.mem_size - availmemr[0].start;
    193      1.1      scw 
    194      1.3  thorpej 	/*
    195      1.3  thorpej 	 * Initialize lwp0 and current pcb and pmap pointers.
    196      1.3  thorpej 	 */
    197      1.3  thorpej 	lwp0.l_cpu = ci;
    198      1.3  thorpej 	lwp0.l_addr = proc0paddr;
    199      1.3  thorpej 	memset(lwp0.l_addr, 0, sizeof *lwp0.l_addr);
    200      1.1      scw 
    201      1.1      scw 	curpcb = &proc0paddr->u_pcb;
    202  1.9.2.1    skrll 	curpcb->pcb_pm = pmap_kernel();
    203      1.1      scw 
    204      1.1      scw 	/*
    205      1.1      scw 	 * Set up trap vectors
    206      1.1      scw 	 */
    207      1.1      scw 	for (exc = EXC_RSVD; exc <= EXC_LAST; exc += 0x100)
    208      1.1      scw 		switch (exc) {
    209      1.1      scw 		default:
    210      1.1      scw 			memcpy((void *)exc, &defaulttrap, (size_t)&defaultsize);
    211      1.1      scw 			break;
    212      1.1      scw 		case EXC_EXI:
    213      1.1      scw 			/*
    214      1.1      scw 			 * This one is (potentially) installed during autoconf
    215      1.1      scw 			 */
    216      1.1      scw 			break;
    217      1.1      scw 		case EXC_SC:
    218      1.1      scw 			memcpy((void *)EXC_SC, &sctrap, (size_t)&scsize);
    219      1.1      scw 			break;
    220      1.1      scw 		case EXC_ALI:
    221      1.1      scw 			memcpy((void *)EXC_ALI, &alitrap, (size_t)&alisize);
    222      1.1      scw 			break;
    223      1.1      scw 		case EXC_DSI:
    224      1.1      scw 			memcpy((void *)EXC_DSI, &dsitrap, (size_t)&dsisize);
    225      1.1      scw 			break;
    226      1.1      scw 		case EXC_ISI:
    227      1.1      scw 			memcpy((void *)EXC_ISI, &isitrap, (size_t)&isisize);
    228      1.1      scw 			break;
    229      1.1      scw 		case EXC_MCHK:
    230      1.1      scw 			memcpy((void *)EXC_MCHK, &mchktrap, (size_t)&mchksize);
    231      1.1      scw 			break;
    232      1.1      scw 		case EXC_ITMISS:
    233      1.1      scw 			memcpy((void *)EXC_ITMISS, &tlbimiss4xx,
    234      1.1      scw 				(size_t)&tlbim4size);
    235      1.1      scw 			break;
    236      1.1      scw 		case EXC_DTMISS:
    237      1.1      scw 			memcpy((void *)EXC_DTMISS, &tlbdmiss4xx,
    238      1.1      scw 				(size_t)&tlbdm4size);
    239      1.1      scw 			break;
    240      1.1      scw 		/*
    241      1.1      scw 		 * EXC_PIT, EXC_FIT, EXC_WDOG handlers
    242      1.1      scw 		 * are spaced by 0x10 bytes only..
    243      1.1      scw 		 */
    244      1.1      scw 		case EXC_PIT:
    245      1.1      scw 			memcpy((void *)EXC_PIT, &pitfitwdog,
    246      1.1      scw 				(size_t)&pitfitwdogsize);
    247      1.1      scw 			break;
    248      1.1      scw 		case EXC_DEBUG:
    249      1.1      scw 			memcpy((void *)EXC_DEBUG, &debugtrap,
    250      1.1      scw 				(size_t)&debugsize);
    251      1.1      scw 			break;
    252      1.1      scw 		case EXC_DTMISS|EXC_ALI:
    253      1.1      scw                         /* PPC405GP Rev D errata item 51 */
    254      1.1      scw 			memcpy((void *)(EXC_DTMISS|EXC_ALI), &errata51handler,
    255      1.1      scw 				(size_t)&errata51size);
    256      1.1      scw 			break;
    257      1.2  thorpej #if defined(DDB) || defined(IPKDB)
    258      1.1      scw 		case EXC_PGM:
    259      1.1      scw #if defined(DDB)
    260      1.1      scw 			memcpy((void *)exc, &ddblow, (size_t)&ddbsize);
    261      1.1      scw #elif defined(IPKDB)
    262      1.1      scw 			memcpy((void *)exc, &ipkdblow, (size_t)&ipkdbsize);
    263      1.1      scw #endif
    264      1.2  thorpej #endif /* DDB | IPKDB */
    265      1.1      scw 			break;
    266      1.1      scw 		}
    267      1.1      scw 
    268      1.1      scw 	__syncicache((void *)EXC_RST, EXC_LAST - EXC_RST + 0x100);
    269      1.1      scw 	mtspr(SPR_EVPR, 0);		/* Set Exception vector base */
    270      1.1      scw 	consinit();
    271      1.1      scw 
    272      1.1      scw 	/* Handle trap instruction as PGM exception */
    273  1.9.2.2    skrll 	asm volatile("mfspr %0,%1":"=r"(dbcr0):"K"(SPR_DBCR0));
    274  1.9.2.2    skrll 	asm volatile("mtspr %0,%1"::"K"(SPR_DBCR0),"r"(dbcr0 & ~DBCR0_TDE));
    275      1.1      scw 
    276      1.1      scw 	/*
    277      1.1      scw 	 * external interrupt handler install
    278      1.1      scw 	 */
    279      1.1      scw 	install_extint(ext_intr);
    280      1.1      scw 
    281      1.1      scw 	/*
    282      1.1      scw 	 * Now enable translation (and machine checks/recoverable interrupts).
    283      1.1      scw 	 */
    284      1.1      scw 	asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0; isync"
    285      1.1      scw 		      : : "r"(0), "K"(PSL_IR|PSL_DR));
    286      1.1      scw 	/* XXXX PSL_ME - With ME set kernel gets stuck... */
    287      1.1      scw 
    288      1.1      scw 	uvm_setpagesize();
    289      1.1      scw 
    290      1.1      scw 	/*
    291      1.1      scw 	 * Initialize pmap module.
    292      1.1      scw 	 */
    293      1.1      scw 	pmap_bootstrap(startkernel, endkernel);
    294      1.1      scw 
    295      1.1      scw #ifdef DEBUG
    296      1.1      scw 	printf("Board config data:\n");
    297      1.1      scw 	printf("  usr_config_ver = %s\n", board_data.usr_config_ver);
    298      1.1      scw 	printf("  rom_sw_ver = %s\n", board_data.rom_sw_ver);
    299      1.1      scw 	printf("  mem_size = %u\n", board_data.mem_size);
    300      1.1      scw 	printf("  mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n",
    301      1.1      scw 	    board_data.mac_address_local[0], board_data.mac_address_local[1],
    302      1.1      scw 	    board_data.mac_address_local[2], board_data.mac_address_local[3],
    303      1.1      scw 	    board_data.mac_address_local[4], board_data.mac_address_local[5]);
    304      1.1      scw 	printf("  mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n",
    305      1.1      scw 	    board_data.mac_address_pci[0], board_data.mac_address_pci[1],
    306      1.1      scw 	    board_data.mac_address_pci[2], board_data.mac_address_pci[3],
    307      1.1      scw 	    board_data.mac_address_pci[4], board_data.mac_address_pci[5]);
    308      1.1      scw 	printf("  processor_speed = %u\n", board_data.processor_speed);
    309      1.1      scw 	printf("  plb_speed = %u\n", board_data.plb_speed);
    310      1.1      scw 	printf("  pci_speed = %u\n", board_data.pci_speed);
    311      1.1      scw #endif
    312      1.1      scw 
    313      1.9    ragge #if NKSYMS || defined(DDB) || defined(LKM)
    314      1.9    ragge 	ksyms_init((int)((u_int)endsym - (u_int)startsym), startsym, endsym);
    315      1.9    ragge #endif
    316      1.1      scw #ifdef DDB
    317      1.1      scw 	if (boothowto & RB_KDB)
    318      1.1      scw 		Debugger();
    319      1.1      scw #endif
    320      1.1      scw #ifdef IPKDB
    321      1.1      scw 	/*
    322      1.1      scw 	 * Now trap to IPKDB
    323      1.1      scw 	 */
    324      1.1      scw 	ipkdb_init();
    325      1.1      scw 	if (boothowto & RB_KDB)
    326      1.1      scw 		ipkdb_connect(0);
    327      1.1      scw #endif
    328      1.1      scw }
    329      1.1      scw 
    330      1.1      scw static void
    331      1.1      scw install_extint(void (*handler)(void))
    332      1.1      scw {
    333      1.1      scw 	extern int extint, extsize;
    334      1.1      scw 	extern u_long extint_call;
    335      1.1      scw 	u_long offset = (u_long)handler - (u_long)&extint_call;
    336  1.9.2.1    skrll 	int msr;
    337      1.1      scw 
    338      1.1      scw #ifdef	DIAGNOSTIC
    339      1.1      scw 	if (offset > 0x1ffffff)
    340      1.1      scw 		panic("install_extint: too far away");
    341      1.1      scw #endif
    342  1.9.2.1    skrll 	asm volatile ("mfmsr %0; wrteei 0" : "=r"(msr));
    343      1.1      scw 	extint_call = (extint_call & 0xfc000003) | offset;
    344      1.1      scw 	memcpy((void *)EXC_EXI, &extint, (size_t)&extsize);
    345      1.1      scw 	__syncicache((void *)&extint_call, sizeof extint_call);
    346      1.1      scw 	__syncicache((void *)EXC_EXI, (int)&extsize);
    347  1.9.2.1    skrll 	asm volatile ("mtmsr %0" :: "r"(msr));
    348      1.1      scw }
    349      1.1      scw 
    350      1.1      scw /*
    351      1.1      scw  * Machine dependent startup code.
    352      1.1      scw  */
    353      1.1      scw 
    354      1.1      scw char msgbuf[MSGBUFSIZE];
    355      1.1      scw 
    356      1.1      scw void
    357      1.1      scw cpu_startup(void)
    358      1.1      scw {
    359      1.1      scw 	vaddr_t minaddr, maxaddr;
    360      1.1      scw 	char pbuf[9];
    361      1.1      scw 
    362      1.1      scw 	/*
    363      1.1      scw 	 * Initialize error message buffer (at end of core).
    364      1.1      scw 	 */
    365      1.1      scw #if 0	/* For some reason this fails... --Artem
    366      1.1      scw 	 * Besides, do we really have to put it at the end of core?
    367      1.1      scw 	 * Let's use static buffer for now
    368      1.1      scw 	 */
    369      1.1      scw 	if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE))))
    370      1.1      scw 		panic("startup: no room for message buffer");
    371      1.1      scw 	for (i = 0; i < btoc(MSGBUFSIZE); i++)
    372      1.8  thorpej 		pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE,
    373      1.8  thorpej 		    msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE);
    374      1.1      scw 	initmsgbuf((caddr_t)msgbuf_vaddr, round_page(MSGBUFSIZE));
    375      1.1      scw #else
    376      1.1      scw 	initmsgbuf((caddr_t)msgbuf, round_page(MSGBUFSIZE));
    377      1.1      scw #endif
    378      1.1      scw 
    379      1.1      scw 	printf("%s", version);
    380      1.1      scw 	printf("Walnut PowerPC 405GP Evaluation Board\n");
    381      1.1      scw 
    382      1.1      scw 	format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
    383      1.1      scw 	printf("total memory = %s\n", pbuf);
    384      1.1      scw 
    385      1.1      scw 	minaddr = 0;
    386      1.1      scw 	/*
    387      1.1      scw 	 * Allocate a submap for exec arguments.  This map effectively
    388      1.1      scw 	 * limits the number of processes exec'ing at any time.
    389      1.1      scw 	 */
    390      1.1      scw 	exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
    391      1.1      scw 				 16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL);
    392      1.1      scw 
    393      1.1      scw 	/*
    394      1.1      scw 	 * Allocate a submap for physio
    395      1.1      scw 	 */
    396      1.1      scw 	phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
    397      1.1      scw 				 VM_PHYS_SIZE, 0, FALSE, NULL);
    398      1.1      scw 
    399      1.1      scw 	/*
    400      1.1      scw 	 * No need to allocate an mbuf cluster submap.  Mbuf clusters
    401      1.1      scw 	 * are allocated via the pool allocator, and we use direct-mapped
    402      1.1      scw 	 * pool pages.
    403      1.1      scw 	 */
    404      1.1      scw 
    405      1.1      scw 	format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
    406      1.1      scw 	printf("avail memory = %s\n", pbuf);
    407      1.1      scw 
    408      1.1      scw 	/*
    409      1.1      scw 	 * Set up the board properties database.
    410      1.1      scw 	 */
    411      1.1      scw 	if (!(board_info = propdb_create("board info")))
    412      1.1      scw 		panic("Cannot create board info database");
    413      1.1      scw 
    414      1.1      scw 	if (board_info_set("mem-size", &board_data.mem_size,
    415      1.1      scw 		sizeof(&board_data.mem_size), PROP_CONST, 0))
    416      1.1      scw 		panic("setting mem-size");
    417      1.1      scw 	if (board_info_set("sip0-mac-addr", &board_data.mac_address_pci,
    418      1.1      scw 		sizeof(&board_data.mac_address_pci), PROP_CONST, 0))
    419      1.1      scw 		panic("setting sip0-mac-addr");
    420      1.1      scw 	if (board_info_set("processor-frequency", &board_data.processor_speed,
    421      1.1      scw 		sizeof(&board_data.processor_speed), PROP_CONST, 0))
    422      1.1      scw 		panic("setting processor-frequency");
    423  1.9.2.1    skrll 
    424  1.9.2.1    skrll 	/*
    425  1.9.2.1    skrll 	 * Now that we have VM, malloc()s are OK in bus_space.
    426  1.9.2.1    skrll 	 */
    427  1.9.2.1    skrll 	bus_space_mallocok();
    428  1.9.2.1    skrll 	fake_mapiodev = 0;
    429      1.1      scw }
    430      1.1      scw 
    431      1.1      scw 
    432      1.1      scw static void
    433      1.1      scw dumpsys(void)
    434      1.1      scw {
    435      1.1      scw 
    436      1.1      scw 	printf("dumpsys: TBD\n");
    437      1.1      scw }
    438      1.1      scw 
    439      1.1      scw /*
    440      1.1      scw  * Soft networking interrupts.
    441      1.1      scw  */
    442      1.1      scw void
    443      1.1      scw softnet(void)
    444      1.1      scw {
    445      1.1      scw 	int isr;
    446      1.1      scw 
    447      1.1      scw 	isr = netisr;
    448      1.1      scw 	netisr = 0;
    449      1.1      scw 
    450      1.1      scw #define DONETISR(bit, fn) do {		\
    451      1.1      scw 	if (isr & (1 << bit))		\
    452      1.1      scw 		fn();			\
    453      1.1      scw } while (0)
    454      1.1      scw 
    455      1.1      scw #include <net/netisr_dispatch.h>
    456      1.1      scw 
    457      1.1      scw #undef DONETISR
    458      1.1      scw 
    459      1.1      scw }
    460      1.1      scw 
    461      1.1      scw /*
    462      1.1      scw  * Soft tty interrupts.
    463      1.1      scw  */
    464  1.9.2.1    skrll #include "com.h"
    465      1.1      scw void
    466      1.1      scw softserial(void)
    467      1.1      scw {
    468      1.1      scw #if NCOM > 0
    469      1.1      scw 	void comsoft(void);	/* XXX from dev/ic/com.c */
    470      1.1      scw 
    471      1.1      scw 	comsoft();
    472      1.1      scw #endif
    473      1.1      scw }
    474      1.1      scw 
    475      1.1      scw /*
    476      1.1      scw  * Halt or reboot the machine after syncing/dumping according to howto.
    477      1.1      scw  */
    478      1.1      scw void
    479      1.1      scw cpu_reboot(int howto, char *what)
    480      1.1      scw {
    481      1.1      scw 	static int syncing;
    482      1.1      scw 	static char str[256];
    483      1.1      scw 	char *ap = str, *ap1 = ap;
    484      1.1      scw 
    485      1.1      scw 	boothowto = howto;
    486      1.1      scw 	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
    487      1.1      scw 		syncing = 1;
    488      1.1      scw 		vfs_shutdown();		/* sync */
    489      1.1      scw 		resettodr();		/* set wall clock */
    490      1.1      scw 	}
    491      1.1      scw 
    492      1.1      scw 	splhigh();
    493      1.1      scw 
    494      1.1      scw 	if (!cold && (howto & RB_DUMP))
    495      1.1      scw 		dumpsys();
    496      1.1      scw 
    497      1.1      scw 	doshutdownhooks();
    498      1.1      scw 
    499      1.1      scw 	if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
    500      1.1      scw 	  /* Power off here if we know how...*/
    501      1.1      scw 	}
    502      1.1      scw 
    503      1.1      scw 	if (howto & RB_HALT) {
    504      1.1      scw 		printf("halted\n\n");
    505      1.1      scw 
    506      1.1      scw 		goto reboot;	/* XXX for now... */
    507      1.1      scw 
    508      1.1      scw #ifdef DDB
    509      1.1      scw 		printf("dropping to debugger\n");
    510      1.1      scw 		while(1)
    511      1.1      scw 			Debugger();
    512      1.1      scw #endif
    513      1.1      scw 	}
    514      1.1      scw 
    515      1.1      scw 	printf("rebooting\n\n");
    516      1.1      scw 	if (what && *what) {
    517      1.1      scw 		if (strlen(what) > sizeof str - 5)
    518      1.1      scw 			printf("boot string too large, ignored\n");
    519      1.1      scw 		else {
    520      1.1      scw 			strcpy(str, what);
    521      1.1      scw 			ap1 = ap = str + strlen(str);
    522      1.1      scw 			*ap++ = ' ';
    523      1.1      scw 		}
    524      1.1      scw 	}
    525      1.1      scw 	*ap++ = '-';
    526      1.1      scw 	if (howto & RB_SINGLE)
    527      1.1      scw 		*ap++ = 's';
    528      1.1      scw 	if (howto & RB_KDB)
    529      1.1      scw 		*ap++ = 'd';
    530      1.1      scw 	*ap++ = 0;
    531      1.1      scw 	if (ap[-2] == '-')
    532      1.1      scw 		*ap1 = 0;
    533      1.1      scw 
    534      1.1      scw 	/* flush cache for msgbuf */
    535      1.1      scw 	__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
    536      1.1      scw 
    537      1.1      scw  reboot:
    538      1.1      scw 	ppc4xx_reset();
    539      1.1      scw 
    540      1.1      scw 	printf("ppc4xx_reset() failed!\n");
    541      1.1      scw #ifdef DDB
    542      1.1      scw 	while(1)
    543      1.1      scw 		Debugger();
    544      1.1      scw #else
    545      1.1      scw 	while (1)
    546      1.1      scw 		/* nothing */;
    547      1.1      scw #endif
    548      1.1      scw }
    549      1.1      scw 
    550      1.1      scw int
    551      1.1      scw lcsplx(int ipl)
    552      1.1      scw {
    553      1.1      scw 
    554      1.1      scw 	return spllower(ipl); 	/* XXX */
    555      1.1      scw }
    556      1.1      scw 
    557      1.1      scw void
    558      1.1      scw mem_regions(struct mem_region **mem, struct mem_region **avail)
    559      1.1      scw {
    560      1.1      scw 
    561      1.1      scw 	*mem = physmemr;
    562      1.1      scw 	*avail = availmemr;
    563      1.1      scw }
    564