|
|
/*===============================================================*\
| Project: RTEMS generic MPC5200 BSP |
+-----------------------------------------------------------------+
| Partially based on the code references which are named below. |
| Adaptions, modifications, enhancements and any recent parts of |
| the code are: |
| Copyright (c) 2005 |
| Embedded Brains GmbH |
| Obere Lagerstr. 30 |
| D-82178 Puchheim |
| Germany |
| rtems@embedded-brains.de |
+-----------------------------------------------------------------+
| The license and distribution terms for this file may be |
| found in the file LICENSE in this distribution or at |
| |
| http://www.rtems.com/license/LICENSE. |
| |
+-----------------------------------------------------------------+
| this file contains the nvram declarations |
\*===============================================================*/
/***********************************************************************/
/* */
/* Module: nvram.h */
/* Date: 07/17/2003 */
/* Purpose: RTEMS M93C64-based header file */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Description: M93C46 is a serial microwire EEPROM which contains */
/* 1Kbit (128 bytes/64 words) of non-volatile memory. */
/* The device can be configured for byte- or word- */
/* access. The driver provides a file-like interface */
/* to this memory. */
/* */
/* MPC5x00 PIN settings: */
/* */
/* PSC3_6 (output) -> MC93C46 serial data in (D) */
/* PSC3_7 (input) -> MC93C46 serial data out (Q) */
/* PSC3_8 (output) -> MC93C46 chip select input (S) */
/* PSC3_9 (output) -> MC93C46 serial clock (C) */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Code */
/* References: DS1307-based Non-Volatile memory device driver */
/* Module: nvram.h */
/* Project: RTEMS 4.6.0pre1 / MCF5206Elite BSP */
/* Version 1.1 */
/* Date: 10/26/2001 */
/* Author: Victor V. Vengerov */
/* Copyright: Copyright (C) 2000 OKTET Ltd.,St.-Petersburg,Russia */
/* */
/* The license and distribution terms for this file may be */
/* found in the file LICENSE in this distribution or at */
/* http://www.OARcorp.com/rtems/license.html. */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Partially based on the code references which are named above. */
/* Adaptions, modifications, enhancements and any recent parts of */
/* the code are under the right of */
/* */
/* IPR Engineering, Dachauer Straße 38, D-80335 München */
/* Copyright(C) 2003 */
/* */
/*---------------------------------------------------------------------*/
/* */
/* IPR Engineering makes no representation or warranties with */
/* respect to the performance of this computer program, and */
/* specifically disclaims any responsibility for any damages, */
/* special or consequential, connected with the use of this program. */
/* */
/*---------------------------------------------------------------------*/
/* */
/* Version history: 1.0 */
/* */
/***********************************************************************/
#ifndef __NVRAM_H__
#define __NVRAM_H__
#ifdef __cplusplus
extern "C" {
#endif
/* include <bsp.h> */
#include <bsp.h>
/* Macros for TBL read access */
#define TBL_READ(count) __asm__ volatile ("mftb %0\n" : "=r" (count) : "0" (count))
#define TMBASE_CLOCK (G2_CLOCK/4)
/* Simple usec delay function prototype */
void wait_usec(unsigned long);
/* nvram_driver_initialize --
* Non-volatile memory device driver initialization.
*/
rtems_device_driver
nvram_driver_initialize(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
/* nvram_driver_open --
* Non-volatile memory device driver open primitive.
*/
rtems_device_driver
nvram_driver_open(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
/* nvram_driver_close --
* Non-volatile memory device driver close primitive.
*/
rtems_device_driver
nvram_driver_close(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
/* nvram_driver_read --
* Non-volatile memory device driver read primitive.
*/
rtems_device_driver
nvram_driver_read(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
/* nvram_driver_write --
* Non-volatile memory device driver write primitive.
*/
rtems_device_driver
nvram_driver_write(rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg);
#ifdef __cplusplus
}
#endif
#endif /* __NVRAM_H__ */
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