firmware/target/arm/s5l8700/ata-nand-s5l8700.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "nand.h"
  22 #include "ata_idle_notify.h"
  23 #include "system.h"
  24 #include <string.h>
  25 #include "thread.h"
  26 #include "led.h"
  27 #include "disk.h"
  28 #include "panic.h"
  29 #include "usb.h"
  30
  31 /* for compatibility */
  32 long last_disk_activity = -1;
  33
  34 /** static, private data **/
  35 static bool initialized = false;
  36
  37 static long next_yield = 0;
  38 #define MIN_YIELD_PERIOD 2000
  39
  40 /* API Functions */
  41
  42 void nand_led(bool onoff)
  43 {
  44     led(onoff);
  45 }
  46
  47 int nand_read_sectors(IF_MD2(int drive,) unsigned long start, int incount,
  48                      void* inbuf)
  49 {
  50     (void)start;
  51     (void)incount;
  52     (void)inbuf;
  53     return 0;
  54 }
  55
  56 int nand_write_sectors(IF_MD2(int drive,) unsigned long start, int count,
  57                       const void* outbuf)
  58 {
  59     (void)start;
  60     (void)count;
  61     (void)outbuf;
  62     return 0;
  63 }
  64
  65 void nand_spindown(int seconds)
  66 {
  67     (void)seconds;
  68 }
  69
  70 void nand_sleep(void)
  71 {
  72 }
  73
  74 void nand_spin(void)
  75 {
  76 }
  77
  78 void nand_enable(bool on)
  79 {
  80     (void)on;
  81 }
  82
  83 void nand_get_info(IF_MD2(int drive,) struct storage_info *info)
  84 {
  85     (void)info;
  86 }
  87
  88 long nand_last_disk_activity(void)
  89 {
  90     return 0;
  91 }
  92
  93 int nand_init(void)
  94 {
  95     initialized = true;
  96     return 0;
  97 }
  98
  99 #ifdef CONFIG_STORAGE_MULTI
 100 int nand_num_drives(int first_drive)
 101 {
 102     /* We don't care which logical drive number(s) we have been assigned */
 103     (void)first_drive;
 104
 105     return 1;
 106 }
 107 #endif