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