package/uboot-ifxmips/files/board/danube/README

   1 /*
   2 ** Copyright (C) 2005 Wu Qi Ming <Qi-Ming.Wu@infineon.com>
   3 **
   4 ** This program is free software; you can redistribute it and/or modify
   5 ** it under the terms of the GNU General Public License as published by
   6 ** the Free Software Foundation; either version 2 of the License, or
   7 ** (at your option) any later version.
   8 **
   9 ** This program is distributed in the hope that it will be useful,
  10 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 ** GNU General Public License for more details.
  13 **
  14 ** You should have received a copy of the GNU General Public License
  15 ** along with this program; if not, write to the Free Software
  16 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17 */
  18
  19 To build a u-boot for danube board, user need to do the following things:
  20 To configure u-boot for a proper board, user need to modify two files accordingly.
  21
  22 To configure u-boot for evaluation board, in danube-uboot/include/configs/danube.h, set
  23 #define USE_EVALUATION_BOARD
  24 #undef  USE_REFERENCE_BOARD
  25 and vice-versa.
  26
  27 To let u-boot boot from ebu(flash,e.g), in danube-uboot/include/configus/danube.h, set
  28 #define   DANUBE_BOOT_FROM_EBU
  29 Otherwise u-boot will be compiled for booting from RAM.
  30
  31 To use DDR RAM running at 111M, in danube-uboot/include/configus/danube.
  32 h, set
  33 #define  DANUBE_DDR_RAM_111M
  34 #undef   DANUBE_DDR_RAM_166M
  35 and vice-versa.
  36
  37 To define RAM size of RAM, in danube-uboot/include/configus/danube.
  38 h, set
  39 #define RAM_SIZE                0x2000000 /*32M ram*/
  40 This is an example for a 32M RAM.
  41
  42
  43 Besides above settings, user need to change danube-uboot/board/danube/config.mk to set the loading address of u-boot.
  44 If U-Boot is to boot from EBU(flash), user needs to set
  45 TEXT_BASE=0xB0000000
  46 If u-boot is to boot from RAM, user needs to set
  47 TEXT_BASE=0xa0400000
  48
  49 Use the script gct to build a uart downloadable u-boot image:
  50 ./gct danube_ref_ddr166.conf u-boot.srec u-boot.asc
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