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      1 /*-
      2  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Paul Fleischer <paul (at) xpg.dk>
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 #include <sys/param.h>
     30 #include <sys/disklabel.h>
     31 
     32 #include <netinet/in.h>
     33 
     34 #include <lib/libkern/libkern.h>
     35 #include <lib/libsa/stand.h>
     36 #include <lib/libsa/nfs.h>
     37 #include <lib/libsa/tftp.h>
     38 #include <lib/libsa/ext2fs.h>
     39 #include <lib/libsa/dosfs.h>
     40 #include <lib/libsa/ufs.h>
     41 
     42 #include "dev_sdmmc.h"
     43 #include <arch/evbarm/mini2440/mini2440_bootinfo.h>
     44 
     45 /* Implemented in dev_net.c */
     46 int net_open(struct open_file *, ...);
     47 int net_close(struct open_file *);
     48 int net_strategy(void *, int, daddr_t, size_t, void *, size_t *);
     49 
     50 /* Implemented in dev_sdmmc.c */
     51 int sdmmc_open(struct open_file *, ...);
     52 int sdmmc_close(struct open_file *);
     53 int sdmmc_strategy(void *, int, daddr_t, size_t, void *, size_t *);
     54 int sdmmc_get_fstype(void*);
     55 
     56 struct devsw devsw[] = {
     57 	{ "dm9000", net_strategy, net_open, net_close, noioctl },
     58 	{ "s3c sdio", sdmmc_strategy, sdmmc_open, sdmmc_close, noioctl }
     59 };
     60 
     61 struct fs_ops ops_nfs = FS_OPS(nfs);
     62 struct fs_ops ops_tftp = FS_OPS(tftp);
     63 struct fs_ops ops_ext2fs = FS_OPS(ext2fs);
     64 struct fs_ops ops_dosfs = FS_OPS(dosfs);
     65 struct fs_ops ops_bsdfs = FS_OPS(ufs);
     66 struct fs_ops file_system[1];
     67 int nfsys = 1;
     68 
     69 extern struct btinfo_bootpath		bi_path;
     70 extern struct btinfo_rootdevice		bi_rdev;
     71 
     72 static void parseunit(const char *name, int *unitp, int *partp, char **pathp);
     73 
     74 int
     75 devopen(struct open_file *of, const char *name, char **file)
     76 {
     77 	int error;
     78 	extern char bootfile[];
     79 
     80 	if (strncmp("net:", name, 4) == 0 ||
     81 	    strncmp("nfs:", name, 4) == 0 ) {
     82 		of->f_dev = &devsw[0];
     83 		if ((error = net_open(of, name+4, "nfs")) != 0)
     84 			return error;
     85 		file_system[0] = ops_nfs;
     86 		*file = bootfile;
     87 		strncpy(bi_path.bootpath, bootfile, sizeof(bi_path.bootpath));
     88 
     89 		return 0;
     90 	} else if (strncmp("tftp:", name, 5) == 0) {
     91 		of->f_dev = &devsw[0];
     92 		if ((error = net_open(of, name+5, "tftp")) != 0) {
     93 			return error;
     94 		}
     95 		file_system[0] = ops_tftp;
     96 		*file = bootfile;
     97 		strncpy(bi_path.bootpath, bootfile, sizeof(bi_path.bootpath));
     98 
     99 		return 0;
    100 	} else if (name[0] == 'l' && name[1] == 'd') {
    101 		int unit, part;
    102 		parseunit(&name[2], &unit, &part, file);
    103 		if (*file == NULL || strlen(*file) == 0) {
    104 			strcpy(*file, "netbsd");
    105 		}
    106 		of->f_dev = &devsw[1];
    107 		if ((error = sdmmc_open(of, unit, part)) != 0)
    108 			return error;
    109 
    110 		strncpy(bi_path.bootpath, *file, sizeof(bi_path.bootpath));
    111 
    112 		snprintf(bi_rdev.devname, sizeof(bi_rdev.devname), "ld");
    113 		bi_rdev.cookie = unit;
    114 		bi_rdev.partition = part;
    115 		switch(sdmmc_get_fstype(of->f_devdata)) {
    116 		case FS_EX2FS:
    117 			file_system[0] = ops_ext2fs;
    118 			break;
    119 		case FS_MSDOS:
    120 			file_system[0] = ops_dosfs;
    121 			break;
    122 		case FS_BSDFFS:
    123 			file_system[0] = ops_bsdfs;
    124 			break;
    125 		default:
    126 			return ENOENT;
    127 		}
    128 
    129 		return 0;
    130 	}
    131 	return ENOENT;
    132 }
    133 
    134 static void
    135 parseunit(const char *name, int *unitp, int *partp, char **pathp)
    136 {
    137 	const char *p = name;
    138 	int unit, part;
    139 
    140 	unit = part = -1;
    141 	while (*p != ':' && *p != '\0') {
    142 		if (unit == -1 && *p >= '0' && *p <= '9')
    143 			unit = *p - '0';
    144 		if (part == -1 && *p >= 'a' && *p < 'a' + 16)
    145 			part = *p - 'a';
    146 		p += 1;
    147 	}
    148 	*unitp = (unit == -1) ? 0 : unit;
    149 	*partp = (part == -1) ? 0 : part;
    150 	*pathp = (*p == ':') ? (char *)p + 1 : NULL;
    151 }
    152