xref: /freebsd/sys/dev/cfe/cfe_env.c (revision 38d120bc13ac1de5b739b67b87016b9122149374)
1 /*-
2  * Copyright (c) 2009 Neelkanth Natu
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/param.h>
28 #include <sys/kenv.h>
29 
30 #include <dev/cfe/cfe_api.h>
31 
32 __FBSDID("$FreeBSD$");
33 
34 #ifndef	CFE_ENV_SIZE
35 #define	CFE_ENV_SIZE	PAGE_SIZE	/* default is one page */
36 #endif
37 
38 extern void cfe_env_init(void);
39 
40 static char cfe_env_buf[CFE_ENV_SIZE];
41 
42 void
43 cfe_env_init(void)
44 {
45 	int idx;
46 	char name[KENV_MNAMELEN], val[KENV_MVALLEN];
47 
48 	init_static_kenv(cfe_env_buf, CFE_ENV_SIZE);
49 
50 	idx = 0;
51 	while (1) {
52 		if (cfe_enumenv(idx, name, sizeof(name), val, sizeof(val)) != 0)
53 			break;
54 
55 		if (kern_setenv(name, val) != 0) {
56 			printf("No space to store CFE env: \"%s=%s\"\n",
57 				name, val);
58 		}
59 		++idx;
60 	}
61 }
62