env_vars.h revision 267654 
1/******************************************************************************
2 *
3 * Filename: env_vars.h
4 *
5 * Definition of environment variables, structures, and other globals.
6 *
7 * Revision information:
8 *
9 * 20AUG2004	kb_admin	initial creation
10 *
11 * BEGIN_KBDD_BLOCK
12 * No warranty, expressed or implied, is included with this software.  It is
13 * provided "AS IS" and no warranty of any kind including statutory or aspects
14 * relating to merchantability or fitness for any purpose is provided.  All
15 * intellectual property rights of others is maintained with the respective
16 * owners.  This software is not copyrighted and is intended for reference
17 * only.
18 * END_BLOCK
19 *
20 * $FreeBSD: releng/9.3/sys/boot/arm/at91/bootspi/env_vars.h 161370 2006-08-16 23:39:58Z imp $
21 *****************************************************************************/
22
23#ifndef _ENV_VARS_H_
24#define _ENV_VARS_H_
25
26/* each environment variable is a string following the standard command	*/
27/* definition used by the interactive loader in the following format:	*/
28/*  <command> <parm1> <parm2> ...					*/
29/* all environment variables (or commands) are stored in a string	*/
30/* format: NULL-terminated.						*/
31/* this implies that commands can never utilize 0-values: actual 0, not	*/
32/* the string '0'.  this is not an issue as the string '0' is handled	*/
33/* by the command parse routine.					*/
34
35/* the following defines the maximum size of the environment for 	*/
36/* including variables.							*/
37/* this value must match that declared in the low-level file that	*/
38/* actually reserves the space for the non-volatile environment.	*/
39#define	MAX_ENV_SIZE_BYTES	0x100
40
41#define MAX_BOOT_COMMANDS	10
42
43/* C-style reference section						*/
44#ifndef __ASSEMBLY__
45
46extern void	WriteCommandTable(void);
47extern void	SetBootCommand(int index, char *command);
48extern void	DumpBootCommands(void);
49extern void	LoadBootCommands(void);
50extern void	ExecuteEnvironmentFunctions(void);
51
52#endif /* !__ASSEMBLY__ */
53
54#endif /* _ENV_VARS_H_ */
55