nvram.c File Reference

#include <kernel.h>
#include <memory.h>
#include <device.h>
#include <nvram.h>
#include <string.h>
#include <stdlib.h>
#include <debug.h>
#include <stdio.h>

Functions
devcall	nvramInit (void)
char *	nvramGet (char *name)
devcall	nvramSet (char *name, char *value)
devcall	nvramUnset (char *name)
devcall	nvramCommit ()

Variables
struct nvram_header *	nvram_header = NULL
struct nvram_tuple *	nvram_tuples [NVRAM_NHASH]

Detailed Description

Functions to access the nvram settings from kernel space.

Function Documentation

devcall nvramCommit

(

)

Commit nvram settings to memory. Due to the nature of nvram settings writing to memory everytime would greatly reduce the life of flash, so after making changes you must commit them to memory.

Returns

OK on success, SYSERR on failure

char* nvramGet

(

char *

name

)

Find the value of a variable.

Parameters

*name

name of variable to find

Returns

pointer to requested tuple struct

devcall nvramInit

(

void

)

Initialize the nvram variable structures for editing

Returns

OK on success, SYSERR on failure

devcall nvramSet	(	char *	name,
		char *	value
	)

Change the variable name to value. If name does not exist, create it, otherwise replace the old value with the new.

Parameters

*name	name to modify
*value	value to set name

Returns

OK on successful change, SYSERR on failure

devcall nvramUnset

(

char *

name

)

Remove a setting from nvram.

Parameters

*name

name to remove from nvram settings

Returns

OK on success, SYSERR on failure