xref: /freebsd/sys/dev/cfe/cfe_env.c (revision d91f8db5f1822c43cd256f19aae1d059e4b25a26)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2009 Neelkanth Natu
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <sys/param.h>
30 #include <sys/kenv.h>
31 
32 #include <dev/cfe/cfe_api.h>
33 
34 __FBSDID("$FreeBSD$");
35 
36 #ifndef	CFE_ENV_SIZE
37 #define	CFE_ENV_SIZE	PAGE_SIZE	/* default is one page */
38 #endif
39 
40 extern void cfe_env_init(void);
41 
42 static char cfe_env_buf[CFE_ENV_SIZE];
43 
44 void
45 cfe_env_init(void)
46 {
47 	int idx;
48 	char name[KENV_MNAMELEN], val[KENV_MVALLEN];
49 
50 	init_static_kenv(cfe_env_buf, CFE_ENV_SIZE);
51 
52 	idx = 0;
53 	while (1) {
54 		if (cfe_enumenv(idx, name, sizeof(name), val, sizeof(val)) != 0)
55 			break;
56 
57 		if (kern_setenv(name, val) != 0) {
58 			printf("No space to store CFE env: \"%s=%s\"\n",
59 				name, val);
60 		}
61 		++idx;
62 	}
63 }
64