diff options
Diffstat (limited to 'bsps/powerpc/gen5200/include/bsp/nvram.h')
| -rw-r--r-- | bsps/powerpc/gen5200/include/bsp/nvram.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/bsps/powerpc/gen5200/include/bsp/nvram.h b/bsps/powerpc/gen5200/include/bsp/nvram.h new file mode 100644 index 0000000000..b05c35986f --- /dev/null +++ b/bsps/powerpc/gen5200/include/bsp/nvram.h @@ -0,0 +1,141 @@ +/*===============================================================*\ +| 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.org/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.rtems.org/license/LICENSE. */ +/* */ +/*---------------------------------------------------------------------*/ +/* */ +/* 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__ */ |