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obs266_machdep.c revision 1.20.52.1 
      1 /*	$NetBSD: obs266_machdep.c,v 1.20.52.1 2018/07/28 04:37:33 pgoyette Exp $	*/
      2 /*	Original: md_machdep.c,v 1.3 2005/01/24 18:47:37 shige Exp $	*/
      3 
      4 /*
      5  * Copyright 2001, 2002 Wasabi Systems, Inc.
      6  * All rights reserved.
      7  *
      8  * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *      This product includes software developed for the NetBSD Project by
     21  *      Wasabi Systems, Inc.
     22  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     23  *    or promote products derived from this software without specific prior
     24  *    written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
     41  * Copyright (C) 1995, 1996 TooLs GmbH.
     42  * All rights reserved.
     43  *
     44  * Redistribution and use in source and binary forms, with or without
     45  * modification, are permitted provided that the following conditions
     46  * are met:
     47  * 1. Redistributions of source code must retain the above copyright
     48  *    notice, this list of conditions and the following disclaimer.
     49  * 2. Redistributions in binary form must reproduce the above copyright
     50  *    notice, this list of conditions and the following disclaimer in the
     51  *    documentation and/or other materials provided with the distribution.
     52  * 3. All advertising materials mentioning features or use of this software
     53  *    must display the following acknowledgement:
     54  *	This product includes software developed by TooLs GmbH.
     55  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     56  *    derived from this software without specific prior written permission.
     57  *
     58  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     59  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     60  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     61  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     62  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     63  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     64  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     65  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     66  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     67  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     68  */
     69 
     70 #include <sys/cdefs.h>
     71 __KERNEL_RCSID(0, "$NetBSD: obs266_machdep.c,v 1.20.52.1 2018/07/28 04:37:33 pgoyette Exp $");
     72 
     73 #include "opt_compat_netbsd.h"
     74 #include "opt_ddb.h"
     75 
     76 #include <sys/param.h>
     77 #include <sys/kernel.h>
     78 #include <sys/ksyms.h>
     79 #include <sys/mount.h>
     80 #include <sys/reboot.h>
     81 #include <sys/systm.h>
     82 #include <sys/device.h>
     83 #include <sys/module.h>
     84 #include <sys/bus.h>
     85 #include <sys/cpu.h>
     86 
     87 #include <uvm/uvm_extern.h>
     88 
     89 #include <machine/obs266.h>
     90 
     91 #include <powerpc/ibm4xx/dcr4xx.h>
     92 #include <powerpc/ibm4xx/cpu.h>
     93 #include <powerpc/ibm4xx/ibm405gp.h>
     94 #include <powerpc/ibm4xx/pci_machdep.h>
     95 #include <powerpc/ibm4xx/openbios.h>
     96 #include <powerpc/ibm4xx/dev/comopbvar.h>
     97 
     98 #include <powerpc/spr.h>
     99 #include <powerpc/ibm4xx/spr.h>
    100 
    101 #include <dev/ic/comreg.h>
    102 #include <dev/pci/pcivar.h>
    103 #include <dev/pci/pciconf.h>
    104 
    105 #include "ksyms.h"
    106 
    107 #include "com.h"
    108 #if (NCOM > 0)
    109 #include <sys/termios.h>
    110 
    111 #ifndef CONADDR
    112 #define CONADDR		IBM405GP_UART0_BASE
    113 #endif
    114 #ifndef CONSPEED
    115 #define CONSPEED	B9600
    116 #endif
    117 #ifndef CONMODE
    118 			/* 8N1 */
    119 #define CONMODE		((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)
    120 #endif
    121 #endif	/* NCOM */
    122 
    123 #define	TLB_PG_SIZE 	(16*1024*1024)
    124 
    125 /*
    126  * Global variables used here and there
    127  */
    128 char bootpath[256];
    129 
    130 extern paddr_t msgbuf_paddr;
    131 
    132 void initppc(vaddr_t, vaddr_t, char *, void *);
    133 
    134 void
    135 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block)
    136 {
    137 	vaddr_t va;
    138 	u_int memsize;
    139 
    140 	/* Setup board from OpenBIOS */
    141 	openbios_board_init(info_block, startkernel);
    142 	memsize = openbios_board_memsize_get();
    143 
    144 	/* Linear map kernel memory */
    145 	for (va = 0; va < endkernel; va += TLB_PG_SIZE)
    146 		ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX);
    147 
    148 	/* Map console after RAM (see pmap_tlbmiss()) */
    149 	ppc4xx_tlb_reserve(CONADDR, roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE,
    150 	    TLB_I | TLB_G);
    151 
    152 	/* Initialize IBM405GPr CPU */
    153 	ibm40x_memsize_init(memsize, startkernel);
    154 	ibm4xx_init(startkernel, endkernel, pic_ext_intr);
    155 
    156 #ifdef DEBUG
    157 	openbios_board_print();
    158 #endif
    159 
    160 #ifdef DDB
    161 	if (boothowto & RB_KDB)
    162 		Debugger();
    163 #endif
    164 
    165 	/*
    166 	 * Look for the ibm4xx modules in the right place.
    167 	 */
    168 	module_machine = module_machine_ibm4xx;
    169 }
    170 
    171 void
    172 consinit(void)
    173 {
    174 
    175 #if (NCOM > 0)
    176 	com_opb_cnattach(OBS266_COM_FREQ, CONADDR, CONSPEED, CONMODE);
    177 #endif
    178 }
    179 
    180 /*
    181  * Machine dependent startup code.
    182  */
    183 void
    184 cpu_startup(void)
    185 {
    186 
    187 	/*
    188 	 * cpu common startup
    189 	 */
    190 	ibm4xx_cpu_startup("OpenBlockS266 IBM PowerPC 405GPr Board");
    191 
    192 	/*
    193 	 * Set up the board properties database.
    194 	 */
    195 	openbios_board_info_set();
    196 
    197 	/*
    198 	 * Now that we have VM, malloc()s are OK in bus_space.
    199 	 */
    200 	bus_space_mallocok();
    201 
    202 	/*
    203 	 * no fake mapiodev
    204 	 */
    205 	fake_mapiodev = 0;
    206 }
    207 
    208 /*
    209  * Halt or reboot the machine after syncing/dumping according to howto.
    210  */
    211 void
    212 cpu_reboot(int howto, char *what)
    213 {
    214 	static int syncing;
    215 	static char str[256];
    216 	char *ap = str, *ap1 = ap;
    217 
    218 	boothowto = howto;
    219 	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
    220 		syncing = 1;
    221 		vfs_shutdown();		/* sync */
    222 		resettodr();		/* set wall clock */
    223 	}
    224 
    225 	splhigh();
    226 
    227 	if (!cold && (howto & RB_DUMP))
    228 		ibm4xx_dumpsys();
    229 
    230 	doshutdownhooks();
    231 
    232 	pmf_system_shutdown(boothowto);
    233 
    234 	if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
    235 	  /* Power off here if we know how...*/
    236 	}
    237 
    238 	if (howto & RB_HALT) {
    239 		printf("halted\n\n");
    240 
    241 #if 0
    242 		goto reboot;	/* XXX for now... */
    243 #endif
    244 
    245 #ifdef DDB
    246 		printf("dropping to debugger\n");
    247 		while(1)
    248 			Debugger();
    249 #endif
    250 	}
    251 
    252 	printf("rebooting\n\n");
    253 	if (what && *what) {
    254 		if (strlen(what) > sizeof str - 5)
    255 			printf("boot string too large, ignored\n");
    256 		else {
    257 			strcpy(str, what);
    258 			ap1 = ap = str + strlen(str);
    259 			*ap++ = ' ';
    260 		}
    261 	}
    262 	*ap++ = '-';
    263 	if (howto & RB_SINGLE)
    264 		*ap++ = 's';
    265 	if (howto & RB_KDB)
    266 		*ap++ = 'd';
    267 	*ap++ = 0;
    268 	if (ap[-2] == '-')
    269 		*ap1 = 0;
    270 
    271 	/* flush cache for msgbuf */
    272 	__syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE));
    273 
    274 #if 0
    275  reboot:
    276 #endif
    277 	ppc4xx_reset();
    278 
    279 	printf("ppc4xx_reset() failed!\n");
    280 #ifdef DDB
    281 	while(1)
    282 		Debugger();
    283 #else
    284 	while (1)
    285 		/* nothing */;
    286 #endif
    287 }
    288 
    289 int
    290 ibm4xx_pci_bus_maxdevs(void *v, int busno)
    291 {
    292 
    293 	/*
    294 	 * Bus number is irrelevant.  Configuration Mechanism 1 is in
    295 	 * use, can have devices 0-32 (i.e. the `normal' range).
    296 	 */
    297 	return 31;
    298 }
    299 
    300 int
    301 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
    302 {
    303 	/*
    304 	 * We need to map the interrupt pin to the interrupt bit
    305 	 * in the UIC associated with it.
    306 	 *
    307 	 * This platform has 4 PCI devices.
    308 	 *
    309 	 # External IRQ Mappings:
    310 	 *  dev 1 (Ext IRQ3):	PCI Connector
    311 	 *  dev 2 (Ext IRQ4):	PCI Connector
    312 	 *  dev 3 (Ext IRQ5):	HPT IDE Controller
    313 	 *  dev 4 (Ext IRQ6):	Davicom Ethernet
    314 	 */
    315 	static const int irqmap[4/*device*/][4/*pin*/] = {
    316 		{  3,  3,  3,  3 },	/* 1: PCI Connector 1 */
    317 		{  4,  4,  4,  4 },	/* 2: PCI Connector 2 */
    318 		{  5,  5, -1, -1 },	/* 3: HPT IDE Controller */
    319 		{  6,  6, -1, -1 },	/* 4: Damicom Ethernet */
    320 	};
    321 
    322 	int pin, dev, irq;
    323 
    324 	pin = pa->pa_intrpin;
    325 	dev = pa->pa_device;
    326         *ihp = -1;
    327 
    328 	/* if interrupt pin not used... */
    329 	if (pin == 0)
    330 		return 1;
    331 
    332 	if (pin > 4) {
    333 		printf("pci_intr_map: bad interrupt pin %d\n", pin);
    334 		return 1;
    335 	}
    336 
    337 	if ((dev < 1) || (dev > 4)) {
    338 		printf("pci_intr_map: bad device %d\n", dev);
    339 		return 1;
    340 	}
    341 
    342 
    343 	if ((irq = irqmap[dev - 1][pin - 1]) == -1) {
    344 		printf("pci_intr_map: no IRQ routing for device %d pin %d\n",
    345 			dev, pin);
    346 		return 1;
    347 	}
    348 
    349 	*ihp = irq + 25;
    350 	return 0;
    351 }
    352 
    353 void
    354 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz,
    355     int *iline)
    356 {
    357 
    358 	static const int ilinemap[4/*device*/] = {
    359 		28, 29, 30, 31
    360 	};
    361 
    362 	if ((dev < 1) || (dev > 4)) {
    363 		printf("%s: bad device %d\n", __func__, dev);
    364 		*iline = 0;
    365 		return;
    366 	}
    367 	*iline = ilinemap[dev - 1];
    368 }
    369