env_vars.h revision 302408
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: stable/11/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