LXR uboot/board/gth2/ee

   1/* By Thomas.Lange@Corelatus.com 001025 */
   2/* Definitions for EEPROM/VOLT METER  DS2438 */
   3/* Copyright (C) 2000-2005 Corelatus AB */
   4
   5/* This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation; either version 2 of
   8 * the License, or (at your option) any later version.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  18 * MA 02111-1307 USA
  19 */
  20
  21#ifndef INCeedevh
  22#define INCeedevh
  23
  24#define E_DEBUG(fmt,args...) if( Debug ) printk(KERN_DEBUG"EE: " fmt, ##args)
  25
  26/* MIPS */
  27#define WRITE_PORT(Value) write_gpio_data(Value)
  28
  29#define READ_PORT (gpio_read()&GPIO_EEDQ)
  30
  31/* 64 bytes chip */
  32#define EE_CHIP_SIZE 64
  33
  34/* Board with new current resistor */
  35#define EE_GTH_0304 1
  36
  37/* new dsp and 64 MB SDRAM */
  38#define EE_DSP_64 0x10
  39
  40/* microsecs */
  41/* Pull line down at least this long for reset pulse */
  42#define RESET_LOW_TIME    490
  43
  44/* Read presence pulse after we release reset pulse */
  45#define PRESENCE_TIMEOUT  100
  46#define PRESENCE_LOW_TIME 200
  47
  48#define WRITE_0_LOW 60
  49#define WRITE_1_LOW 1
  50#define TOTAL_WRITE_LOW 60
  51
  52#define READ_LOW        1
  53#define READ_TIMEOUT   10
  54#define TOTAL_READ_LOW 70
  55
  56/* Rom function commands */
  57#define READ_ROM   0x33
  58#define MATCH_ROM  0x55
  59#define SKIP_ROM   0xCC
  60#define SEARCH_ROM 0xF0
  61
  62
  63/* Memory_command_function */
  64#define WRITE_SCRATCHPAD 0x4E
  65#define READ_SCRATCHPAD  0xBE
  66#define COPY_SCRATCHPAD  0x48
  67#define RECALL_MEMORY    0xB8
  68#define CONVERT_TEMP     0x44
  69#define CONVERT_VOLTAGE  0xB4
  70
  71/* Chip is divided in 8 pages, 8 bytes each */
  72
  73#define EE_PAGE_SIZE 8
  74
  75/* All chip data we want are in page 0 */
  76
  77/* Bytes in page 0 */
  78#define EE_P0_STATUS   0
  79#define EE_P0_TEMP_LSB 1
  80#define EE_P0_TEMP_MSB 2
  81#define EE_P0_VOLT_LSB 3
  82#define EE_P0_VOLT_MSB 4
  83#define EE_P0_CURRENT_LSB 5
  84#define EE_P0_CURRENT_MSB 6
  85
  86
  87/* 40 byte user data is located at page 3-7 */
  88#define EE_USER_PAGE_0 3
  89#define USER_PAGES 5
  90
  91/* Layout of gth user pages usage */
  92/* Bytes 0-16   ethernet addr in ascii ( len 17 ) */
  93
  94#define EE_ETHERNET_OFFSET       0
  95
  96#endif /* INCeedevh */
  97