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 * $FreeBSD$ 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 46 extern void WriteCommandTable(void); 47 extern void SetBootCommand(int index, char *command); 48 extern void DumpBootCommands(void); 49 extern void LoadBootCommands(void); 50 extern void ExecuteEnvironmentFunctions(void); 51 52 #endif /* !__ASSEMBLY__ */ 53 54 #endif /* _ENV_VARS_H_ */ 55