xref: /freebsd/sys/dev/cfe/cfe_env.c (revision 5f4c09dd85bff675e0ca63c55ea3c517e0fddfcc)
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 #ifndef	CFE_ENV_SIZE
34 #define	CFE_ENV_SIZE	PAGE_SIZE	/* default is one page */
35 #endif
36 
37 extern void cfe_env_init(void);
38 
39 static char cfe_env_buf[CFE_ENV_SIZE];
40 
41 void
42 cfe_env_init(void)
43 {
44 	int idx;
45 	char name[KENV_MNAMELEN], val[KENV_MVALLEN];
46 
47 	init_static_kenv(cfe_env_buf, CFE_ENV_SIZE);
48 
49 	idx = 0;
50 	while (1) {
51 		if (cfe_enumenv(idx, name, sizeof(name), val, sizeof(val)) != 0)
52 			break;
53 
54 		if (kern_setenv(name, val) != 0) {
55 			printf("No space to store CFE env: \"%s=%s\"\n",
56 				name, val);
57 		}
58 		++idx;
59 	}
60 }
61