LXR uboot/board/eltec/elppc/elppc.c

   1/*
   2 * (C) Copyright 2002 ELTEC Elektronik AG
   3 * Frank Gottschling <fgottschling@eltec.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 <command.h>
  26#include <mpc106.h>
  27#include <video_fb.h>
  28#include <netdev.h>
  29
  30DECLARE_GLOBAL_DATA_PTR;
  31
  32/* ------------------------------------------------------------------------- */
  33
  34int checkboard (void)
  35{
  36        puts ("Board: ELTEC PowerPC\n");
  37        return (0);
  38}
  39
  40/* ------------------------------------------------------------------------- */
  41
  42int checkflash (void)
  43{
  44        /* TODO */
  45        printf ("Test not implemented !\n");
  46        return (0);
  47}
  48
  49/* ------------------------------------------------------------------------- */
  50
  51static unsigned int mpc106_read_cfg_dword (unsigned int reg)
  52{
  53        unsigned int reg_addr = MPC106_REG | (reg & 0xFFFFFFFC);
  54
  55        out32r (MPC106_REG_ADDR, reg_addr);
  56
  57        return (in32r (MPC106_REG_DATA | (reg & 0x3)));
  58}
  59
  60/* ------------------------------------------------------------------------- */
  61
  62long int dram_size (int board_type)
  63{
  64        /*
  65         * No actual initialisation to do - done when setting up
  66         * PICRs MCCRs ME/SARs etc in asm_init.S.
  67         */
  68
  69        register unsigned long i, msar1, mear1, memSize;
  70
  71#if defined(CONFIG_SYS_MEMTEST)
  72        register unsigned long reg;
  73
  74        printf ("Testing DRAM\n");
  75
  76        /* write each mem addr with it's address */
  77        for (reg = CONFIG_SYS_MEMTEST_START; reg < CONFIG_SYS_MEMTEST_END; reg += 4)
  78                *reg = reg;
  79
  80        for (reg = CONFIG_SYS_MEMTEST_START; reg < CONFIG_SYS_MEMTEST_END; reg += 4) {
  81                if (*reg != reg)
  82                        return -1;
  83        }
  84#endif
  85
  86        /*
  87         * Since MPC107 memory controller chip has already been set to
  88         * control all memory, just read and interpret its memory boundery register.
  89         */
  90        memSize = 0;
  91        msar1 = mpc106_read_cfg_dword (MPC106_MSAR1);
  92        mear1 = mpc106_read_cfg_dword (MPC106_MEAR1);
  93        i = mpc106_read_cfg_dword (MPC106_MBER) & 0xf;
  94
  95        do {
  96                if (i & 0x01)                   /* is bank enabled ? */
  97                        memSize += (mear1 & 0xff) - (msar1 & 0xff) + 1;
  98                msar1 >>= 8;
  99                mear1 >>= 8;
 100                i >>= 1;
 101        } while (i);
 102
 103        return (memSize * 0x100000);
 104}
 105
 106/* ------------------------------------------------------------------------- */
 107
 108phys_size_t initdram (int board_type)
 109{
 110        return dram_size (board_type);
 111}
 112
 113/* ------------------------------------------------------------------------- */
 114
 115/*
 116 * The BAB 911 can be reset by writing bit 0 of the Processor Initialization
 117 * Register PI in the MPC 107 (at offset 0x41090 of the Embedded Utilities
 118 * Memory Block).
 119 */
 120int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 121{
 122        out8 (MPC107_EUMB_PI, 1);
 123        return (0);
 124}
 125
 126/* ------------------------------------------------------------------------- */
 127
 128#if defined(CONFIG_WATCHDOG)
 129
 130/*
 131 * Since the 7xx CPUs don't have an internal watchdog, this function is
 132 * board specific.
 133 */
 134void watchdog_reset (void)
 135{
 136}
 137#endif                                                  /* CONFIG_WATCHDOG */
 138
 139/* ------------------------------------------------------------------------- */
 140
 141void after_reloc (ulong dest_addr)
 142{
 143        /*
 144         * Jump to the main U-Boot board init code
 145         */
 146        board_init_r ((gd_t *)gd, dest_addr);
 147}
 148
 149/* ------------------------------------------------------------------------- */
 150
 151#ifdef CONFIG_CONSOLE_EXTRA_INFO
 152extern GraphicDevice smi;
 153
 154void video_get_info_str (int line_number, char *info)
 155{
 156        /* init video info strings for graphic console */
 157        switch (line_number) {
 158        case 1:
 159                sprintf (info, " MPC7xx V%d.%d at %d / %d MHz",
 160                                 (get_pvr () >> 8) & 0xFF, get_pvr () & 0xFF, 400, 100);
 161                return;
 162        case 2:
 163                sprintf (info, " ELTEC ELPPC with %ld MB DRAM and %ld MB FLASH",
 164                                 dram_size (0) / 0x100000, flash_init () / 0x100000);
 165                return;
 166        case 3:
 167                sprintf (info, " %s", smi.modeIdent);
 168                return;
 169        }
 170
 171        /* no more info lines */
 172        *info = 0;
 173        return;
 174}
 175#endif
 176
 177int board_eth_init(bd_t *bis)
 178{
 179        return pci_eth_init(bis);
 180}
 181