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
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 /* ------------------------------------------------------------------------- */
  33
  34 int checkboard (void)
  35 {
  36         puts ("Board: ELTEC PowerPC\n");
  37         return (0);
  38 }
  39
  40 /* ------------------------------------------------------------------------- */
  41
  42 int checkflash (void)
  43 {
  44         /* TODO */
  45         printf ("Test not implemented !\n");
  46         return (0);
  47 }
  48
  49 /* ------------------------------------------------------------------------- */
  50
  51 static 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
  62 long 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
 108 phys_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  */
 120 int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *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  */
 134 void watchdog_reset (void)
 135 {
 136 }
 137 #endif                                                  /* CONFIG_WATCHDOG */
 138
 139 /* ------------------------------------------------------------------------- */
 140
 141 void 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
 152 extern GraphicDevice smi;
 153
 154 void 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
 177 int board_eth_init(bd_t *bis)
 178 {
 179         return pci_eth_init(bis);
 180 }