LXR uboot/board/svm_sc8xx/svm

   1/*
   2 * (C) Copyright 2000, 2001, 2002
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <mpc8xx.h>
  26
  27/* ------------------------------------------------------------------------- */
  28const uint sdram_table[] =
  29{
  30/*-----------------
  31 UPM A contents:
  32----------------- */
  33/*---------------------------------------------------
  34 Read Single Beat Cycle. Offset 0 in the RAM array.
  35---------------------------------------------------- */
  360x1f07fc04,  0xeeaefc04,  0x11adfc04,  0xefbbbc00 ,
  370x1ff77c47,  0x1ff77c35,  0xefeabc34,  0x1fb57c35 ,
  38/*------------------------------------------------
  39 Read Burst Cycle. Offset 0x8 in the RAM array.
  40------------------------------------------------ */
  410x1f07fc04,  0xeeaefc04,  0x10adfc04,  0xf0affc00,
  420xf0affc00,  0xf1affc00,  0xefbbbc00,  0x1ff77c47,
  430xffffffff,  0xffffffff,  0xffffffff,  0xffffffff,
  440xffffffff,  0xffffffff,  0xffffffff,  0xffffffff,
  45/*-------------------------------------------------------
  46 Write Single Beat Cycle. Offset 0x18 in the RAM array
  47------------------------------------------------------- */
  480x1f27fc04,  0xeeaebc00,  0x01b93c04,  0x1ff77c47 ,
  490xffffffff,  0xffffffff,  0xffffffff,  0xffffffff ,
  50/*-------------------------------------------------
  51 Write Burst Cycle. Offset 0x20 in the RAM array
  52------------------------------------------------- */
  530x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00,
  540xf0affc00, 0xe1bbbc04, 0x1ff77c47, 0xffffffff,
  550xffffffff,  0xffffffff,  0xffffffff,  0xffffffff ,
  560xffffffff,  0xffffffff,  0xffffffff,  0xffffffff ,
  57/*------------------------------------------------------------------------
  58 Periodic Timer Expired. For DRAM refresh. Offset 0x30 in the RAM array
  59------------------------------------------------------------------------ */
  600x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04,
  610xfffffc84, 0xfffffc07, 0xffffffff, 0xffffffff,
  620xffffffff,  0xffffffff,  0xffffffff,  0xffffffff ,
  63/*-----------
  64*  Exception:
  65*  ----------- */
  660x7ffefc07,  0xffffffff,  0xffffffff,  0xffffffff ,
  67};
  68
  69/* ------------------------------------------------------------------------- */
  70/*
  71 * Check Board Identity:
  72 *
  73 * Test ID string (SVM8...)
  74 *
  75 * Return 1 for "SC8xx" type, 0 else.
  76 */
  77
  78int checkboard(void)
  79{
  80        char buf[64];
  81        int i;
  82        int l = getenv_f("serial#", buf, sizeof(buf));
  83
  84        if (l < 0 || strncmp(buf, "SVM8", 4)) {
  85                printf("### No HW ID - assuming SVM SC8xx\n");
  86                return (0);
  87        }
  88
  89        for (i = 0; i < l; ++i) {
  90                if (buf[i] == ' ')
  91                        break;
  92                putc(buf[i]);
  93        }
  94
  95        putc('\n');
  96
  97        return 0;
  98}
  99
 100/* ------------------------------------------------------------------------- */
 101
 102phys_size_t initdram (int board_type)
 103{
 104        volatile immap_t     *immap  = (immap_t *)CONFIG_SYS_IMMR;
 105        volatile memctl8xx_t *memctl = &immap->im_memctl;
 106        long int size_b0 = 0;
 107
 108        upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
 109
 110        memctl->memc_mptpr = CONFIG_SYS_MPTPR;
 111#if defined (CONFIG_SDRAM_16M)
 112        memctl->memc_mamr = 0x00802114 | CONFIG_SYS_MxMR_PTx;
 113        memctl->memc_mcr  = 0x80002105;     /* SDRAM bank 0 */
 114        udelay(1);
 115        memctl->memc_mcr  = 0x80002830;
 116        udelay(1);
 117        memctl->memc_mar  = 0x00000088;
 118        udelay(1);
 119        memctl->memc_mcr  = 0x80002106;
 120        udelay(1);
 121        memctl->memc_or1 =  0xff000a00;
 122        size_b0 = 0x01000000;
 123#elif defined (CONFIG_SDRAM_32M)
 124        memctl->memc_mamr = 0x00904114 | CONFIG_SYS_MxMR_PTx;
 125        memctl->memc_mcr  = 0x80002105;     /* SDRAM bank 0 */
 126        udelay(1);
 127        memctl->memc_mcr  = 0x80002830;
 128        udelay(1);
 129        memctl->memc_mar  = 0x00000088;
 130        udelay(1);
 131        memctl->memc_mcr  = 0x80002106;
 132        udelay(1);
 133        memctl->memc_or1 =  0xfe000a00;
 134        size_b0 = 0x02000000;
 135#elif defined (CONFIG_SDRAM_64M)
 136        memctl->memc_mamr = 0x00a04114 | CONFIG_SYS_MxMR_PTx;
 137        memctl->memc_mcr  = 0x80002105;     /* SDRAM bank 0 */
 138        udelay(1);
 139        memctl->memc_mcr  = 0x80002830;
 140        udelay(1);
 141        memctl->memc_mar  = 0x00000088;
 142        udelay(1);
 143        memctl->memc_mcr  = 0x80002106;
 144        udelay(1);
 145        memctl->memc_or1 =  0xfc000a00;
 146        size_b0 = 0x04000000;
 147#else
 148#error SDRAM size configuration missing.
 149#endif
 150        memctl->memc_br1 =  0x00000081;
 151        udelay(200);
 152        return (size_b0 );
 153}
 154
 155#if defined(CONFIG_CMD_DOC)
 156void doc_init (void)
 157{
 158                doc_probe (CONFIG_SYS_DOC_BASE);
 159}
 160#endif
 161