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arcbios.c revision 1.12.28.1
      1  1.12.28.1   jruoho /*	$NetBSD: arcbios.c,v 1.12.28.1 2011/06/06 09:07:44 jruoho Exp $	*/
      2        1.1  thorpej 
      3        1.1  thorpej /*-
      4        1.1  thorpej  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5        1.1  thorpej  * All rights reserved.
      6        1.1  thorpej  *
      7        1.1  thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8        1.1  thorpej  * by Jason R. Thorpe.
      9        1.1  thorpej  *
     10        1.1  thorpej  * Redistribution and use in source and binary forms, with or without
     11        1.1  thorpej  * modification, are permitted provided that the following conditions
     12        1.1  thorpej  * are met:
     13        1.1  thorpej  * 1. Redistributions of source code must retain the above copyright
     14        1.1  thorpej  *    notice, this list of conditions and the following disclaimer.
     15        1.1  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     16        1.1  thorpej  *    notice, this list of conditions and the following disclaimer in the
     17        1.1  thorpej  *    documentation and/or other materials provided with the distribution.
     18        1.1  thorpej  *
     19        1.1  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20        1.1  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21        1.1  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22        1.1  thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23        1.1  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24        1.1  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25        1.1  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26        1.1  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27        1.1  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28        1.1  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29        1.1  thorpej  * POSSIBILITY OF SUCH DAMAGE.
     30        1.1  thorpej  */
     31        1.5    lukem 
     32        1.5    lukem #include <sys/cdefs.h>
     33  1.12.28.1   jruoho __KERNEL_RCSID(0, "$NetBSD: arcbios.c,v 1.12.28.1 2011/06/06 09:07:44 jruoho Exp $");
     34        1.1  thorpej 
     35        1.1  thorpej #include <sys/param.h>
     36        1.1  thorpej 
     37        1.4    rafal #include <sys/systm.h>
     38        1.1  thorpej #include <dev/cons.h>
     39        1.4    rafal #include <sys/conf.h>
     40        1.1  thorpej 
     41        1.1  thorpej #include <dev/arcbios/arcbios.h>
     42        1.1  thorpej #include <dev/arcbios/arcbiosvar.h>
     43        1.1  thorpej 
     44        1.1  thorpej const struct arcbios_spb *ARCBIOS_SPB;
     45        1.1  thorpej const struct arcbios_fv *ARCBIOS;
     46        1.1  thorpej 
     47        1.3  thorpej char arcbios_sysid_vendor[ARCBIOS_SYSID_FIELDLEN + 1];
     48        1.3  thorpej char arcbios_sysid_product[ARCBIOS_SYSID_FIELDLEN + 1];
     49        1.3  thorpej 
     50        1.3  thorpej char arcbios_system_identifier[64 + 1];
     51        1.3  thorpej 
     52        1.1  thorpej int	arcbios_cngetc(dev_t);
     53        1.1  thorpej void	arcbios_cnputc(dev_t, int);
     54        1.1  thorpej 
     55        1.3  thorpej void	arcbios_fetch_system_identifier(struct arcbios_component *,
     56        1.3  thorpej 	    struct arcbios_treewalk_context *);
     57        1.3  thorpej 
     58        1.1  thorpej struct consdev arcbios_cn = {
     59        1.9    perry 	NULL, NULL, arcbios_cngetc, arcbios_cnputc, nullcnpollc,
     60        1.7    rafal 	    NULL, NULL, NULL, NODEV, CN_NORMAL,
     61        1.1  thorpej };
     62        1.1  thorpej 
     63        1.6  gehenna extern const struct cdevsw arcbios_cdevsw;
     64        1.4    rafal 
     65        1.1  thorpej /*
     66        1.1  thorpej  * arcbios_init:
     67        1.1  thorpej  *
     68        1.1  thorpej  *	Initialize the ARC BIOS.
     69        1.1  thorpej  */
     70        1.1  thorpej int
     71        1.1  thorpej arcbios_init(vaddr_t pblkva)
     72        1.1  thorpej {
     73        1.4    rafal 	int maj;
     74        1.3  thorpej 	struct arcbios_sysid *sid;
     75        1.1  thorpej 
     76        1.1  thorpej 	ARCBIOS_SPB = (struct arcbios_spb *) pblkva;
     77        1.8   sekiya 
     78        1.1  thorpej 	switch (ARCBIOS_SPB->SPBSignature) {
     79        1.1  thorpej 	case ARCBIOS_SPB_SIGNATURE:
     80        1.1  thorpej 	case ARCBIOS_SPB_SIGNATURE_1:
     81        1.1  thorpej 		/* Okay. */
     82        1.1  thorpej 		break;
     83        1.1  thorpej 
     84        1.1  thorpej 	default:
     85        1.1  thorpej 		/* Don't know what this is. */
     86        1.1  thorpej 		return (1);
     87        1.1  thorpej 	}
     88        1.1  thorpej 
     89        1.1  thorpej 	/* Initialize our pointer to the firmware vector. */
     90  1.12.28.1   jruoho 	ARCBIOS = (void *)(intptr_t)ARCBIOS_SPB->FirmwareVector;
     91        1.4    rafal 
     92        1.4    rafal 	/* Find the ARC BIOS console device major (needed by cnopen) */
     93        1.6  gehenna 	maj = cdevsw_lookup_major(&arcbios_cdevsw);
     94        1.4    rafal 
     95        1.4    rafal 	arcbios_cn.cn_dev = makedev(maj, 0);
     96        1.1  thorpej 
     97        1.1  thorpej 	/* Initialize the bootstrap console. */
     98        1.1  thorpej 	cn_tab = &arcbios_cn;
     99        1.1  thorpej 
    100        1.3  thorpej 	/*
    101        1.3  thorpej 	 * Fetch the system ID.
    102        1.3  thorpej 	 */
    103  1.12.28.1   jruoho 	sid = arcbios_GetSystemId();
    104        1.3  thorpej 	if (sid != NULL) {
    105        1.3  thorpej 		memcpy(arcbios_sysid_vendor, sid->VendorId,
    106        1.3  thorpej 		    sizeof(sid->VendorId));
    107        1.3  thorpej 		arcbios_sysid_vendor[sizeof(sid->VendorId)] = '\0';
    108        1.3  thorpej 
    109        1.3  thorpej 		memcpy(arcbios_sysid_product, sid->ProductId,
    110        1.3  thorpej 		    sizeof(sid->ProductId));
    111        1.3  thorpej 		arcbios_sysid_product[sizeof(sid->ProductId)] = '\0';
    112        1.3  thorpej 	}
    113        1.3  thorpej 
    114        1.3  thorpej 	/*
    115        1.3  thorpej 	 * Fetch the identifier string from the `system' component.
    116        1.3  thorpej 	 * Machdep code will use this to initialize the system type.
    117        1.3  thorpej 	 */
    118        1.3  thorpej 	arcbios_tree_walk(arcbios_fetch_system_identifier, NULL);
    119        1.3  thorpej 
    120        1.1  thorpej 	return (0);
    121        1.1  thorpej }
    122        1.2  thorpej 
    123        1.3  thorpej void
    124        1.3  thorpej arcbios_fetch_system_identifier(struct arcbios_component *node,
    125        1.3  thorpej     struct arcbios_treewalk_context *atc)
    126        1.3  thorpej {
    127        1.3  thorpej 
    128        1.3  thorpej 	switch (node->Class) {
    129        1.3  thorpej 	case COMPONENT_CLASS_SystemClass:
    130        1.3  thorpej 		arcbios_component_id_copy(node,
    131        1.3  thorpej 		    arcbios_system_identifier,
    132        1.3  thorpej 		    sizeof(arcbios_system_identifier));
    133        1.3  thorpej 		atc->atc_terminate = 1;
    134        1.3  thorpej 		break;
    135        1.3  thorpej 
    136        1.3  thorpej 	default:
    137        1.3  thorpej 		break;
    138        1.3  thorpej 	}
    139        1.3  thorpej }
    140        1.3  thorpej 
    141        1.2  thorpej /****************************************************************************
    142        1.2  thorpej  * ARC component tree walking routines.
    143        1.2  thorpej  ****************************************************************************/
    144        1.2  thorpej 
    145        1.2  thorpej static void
    146        1.2  thorpej arcbios_subtree_walk(struct arcbios_component *node,
    147        1.2  thorpej     void (*func)(struct arcbios_component *, struct arcbios_treewalk_context *),
    148        1.2  thorpej     struct arcbios_treewalk_context *atc)
    149        1.2  thorpej {
    150        1.2  thorpej 
    151  1.12.28.1   jruoho 	for (node = arcbios_GetChild(node);
    152        1.2  thorpej 	     node != NULL && atc->atc_terminate == 0;
    153  1.12.28.1   jruoho 	     node = arcbios_GetPeer(node)) {
    154        1.2  thorpej 		(*func)(node, atc);
    155        1.2  thorpej 		if (atc->atc_terminate)
    156        1.2  thorpej 			return;
    157        1.2  thorpej 		arcbios_subtree_walk(node, func, atc);
    158        1.2  thorpej 	}
    159        1.2  thorpej }
    160        1.2  thorpej 
    161        1.2  thorpej void
    162        1.2  thorpej arcbios_tree_walk(void (*func)(struct arcbios_component *,
    163        1.2  thorpej     struct arcbios_treewalk_context *), void *cookie)
    164        1.2  thorpej {
    165        1.2  thorpej 	struct arcbios_treewalk_context atc;
    166        1.2  thorpej 
    167        1.2  thorpej 	atc.atc_cookie = cookie;
    168        1.2  thorpej 	atc.atc_terminate = 0;
    169        1.2  thorpej 
    170        1.2  thorpej 	arcbios_subtree_walk(NULL, func, &atc);
    171        1.3  thorpej }
    172        1.3  thorpej 
    173        1.3  thorpej void
    174        1.3  thorpej arcbios_component_id_copy(struct arcbios_component *node,
    175        1.3  thorpej     char *dst, size_t dstsize)
    176        1.3  thorpej {
    177        1.3  thorpej 
    178        1.3  thorpej 	dstsize--;
    179        1.3  thorpej 	if (dstsize > node->IdentifierLength)
    180        1.3  thorpej 		dstsize = node->IdentifierLength;
    181  1.12.28.1   jruoho 	memcpy(dst, (void *)(intptr_t)node->Identifier, dstsize);
    182        1.3  thorpej 	dst[dstsize] = '\0';
    183        1.2  thorpej }
    184        1.2  thorpej 
    185        1.2  thorpej /****************************************************************************
    186        1.2  thorpej  * Bootstrap console routines.
    187        1.2  thorpej  ****************************************************************************/
    188        1.1  thorpej 
    189        1.1  thorpej int
    190        1.1  thorpej arcbios_cngetc(dev_t dev)
    191        1.1  thorpej {
    192       1.10  tsutsui 	u_long count;
    193        1.1  thorpej 	char c;
    194        1.1  thorpej 
    195  1.12.28.1   jruoho 	arcbios_Read(ARCBIOS_STDIN, &c, 1, &count);
    196        1.1  thorpej 	return (c);
    197        1.1  thorpej }
    198        1.1  thorpej 
    199        1.1  thorpej void
    200        1.1  thorpej arcbios_cnputc(dev_t dev, int c)
    201        1.1  thorpej {
    202       1.10  tsutsui 	u_long count;
    203        1.1  thorpej 	char ch = c;
    204        1.1  thorpej 
    205  1.12.28.1   jruoho 	arcbios_Write(ARCBIOS_STDOUT, &ch, 1, &count);
    206        1.1  thorpej }
    207