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/**
* @file
*
* @brief Provide SRAM support for the NV Disk
* @ingroup libblock
*/
/*
* RTEMS Project (http://www.rtems.org/)
*
* Copyright 2007 Chris Johns (chrisj@rtems.org)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/nvdisk-sram.h>
#ifndef NVDISK_SRAM_ERROR_TRACE
#define NVDISK_SRAM_ERROR_TRACE (0)
#endif
static int
rtems_nvdisk_sram_read (uint32_t device RTEMS_UNUSED,
uint32_t flags RTEMS_UNUSED,
void* base,
uint32_t offset,
void* buffer,
size_t size)
{
memcpy (buffer, (base + offset), size);
return 0;
}
static int
rtems_nvdisk_sram_write (uint32_t device RTEMS_UNUSED,
uint32_t flags RTEMS_UNUSED,
void* base,
uint32_t offset,
const void* buffer,
size_t size)
{
memcpy ((base + offset), buffer, size);
return 0;
}
static int
rtems_nvdisk_sram_verify (uint32_t device RTEMS_UNUSED,
uint32_t flags RTEMS_UNUSED,
void* base,
uint32_t offset,
const void* buffer,
size_t size)
{
return memcmp ((base + offset), buffer, size) == 0 ? 0 : EIO;
}
const rtems_nvdisk_driver_handlers rtems_nvdisk_sram_handlers =
{
.read = rtems_nvdisk_sram_read,
.write = rtems_nvdisk_sram_write,
.verify = rtems_nvdisk_sram_verify
};
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