board/musenki/musenki.c

   1 /*
   2  * (C) Copyright 2001
   3  * Rob Taylor, Flying Pig Systems. robt@flyingpig.com.
   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 <mpc824x.h>
  26 #include <pci.h>
  27
  28 int checkboard (void)
  29 {
  30         ulong busfreq  = get_bus_freq(0);
  31         char  buf[32];
  32
  33         printf("Board: MUSENKI Local Bus at %s MHz\n", strmhz(buf, busfreq));
  34         return 0;
  35
  36 }
  37
  38 #if 0   /* NOT USED */
  39 int checkflash (void)
  40 {
  41         /* TODO: XXX XXX XXX */
  42         printf ("## Test not implemented yet ##\n");
  43
  44         return (0);
  45 }
  46 #endif
  47
  48 long int initdram (int board_type)
  49 {
  50         int              i, cnt;
  51         volatile uchar * base= CFG_SDRAM_BASE;
  52         volatile ulong * addr;
  53         ulong            save[32];
  54         ulong            val, ret  = 0;
  55
  56         for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) {
  57                 addr = (volatile ulong *)base + cnt;
  58                 save[i++] = *addr;
  59                 *addr = ~cnt;
  60         }
  61
  62         addr = (volatile ulong *)base;
  63         save[i] = *addr;
  64         *addr = 0;
  65
  66         if (*addr != 0) {
  67                 *addr = save[i];
  68                 goto Done;
  69         }
  70
  71         for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) {
  72                 addr = (volatile ulong *)base + cnt;
  73                 val = *addr;
  74                 *addr = save[--i];
  75                 if (val != ~cnt) {
  76                         ulong new_bank0_end = cnt * sizeof(long) - 1;
  77                         ulong mear1  = mpc824x_mpc107_getreg(MEAR1);
  78                         ulong emear1 = mpc824x_mpc107_getreg(EMEAR1);
  79                         mear1 =  (mear1  & 0xFFFFFF00) |
  80                           ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
  81                         emear1 = (emear1 & 0xFFFFFF00) |
  82                           ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
  83                         mpc824x_mpc107_setreg(MEAR1,  mear1);
  84                         mpc824x_mpc107_setreg(EMEAR1, emear1);
  85
  86                         ret = cnt * sizeof(long);
  87                         goto Done;
  88                 }
  89         }
  90
  91         ret = CFG_MAX_RAM_SIZE;
  92 Done:
  93         return ret;
  94 }
  95
  96 /*
  97  * Initialize PCI Devices
  98  */
  99 #ifndef CONFIG_PCI_PNP
 100 static struct pci_config_table pci_sandpoint_config_table[] = {
 101 #if 0
 102         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 103           0x0, 0x0, 0x0, /* unknown eth0 divice */
 104           pci_cfgfunc_config_device, { PCI_ENET0_IOADDR,
 105                                        PCI_ENET0_MEMADDR,
 106                                        PCI_COMMAND_IO |
 107                                        PCI_COMMAND_MEMORY |
 108                                        PCI_COMMAND_MASTER }},
 109         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 110           0x0, 0x0, 0x0, /* unknown eth1 device */
 111           pci_cfgfunc_config_device, { PCI_ENET1_IOADDR,
 112                                        PCI_ENET1_MEMADDR,
 113                                        PCI_COMMAND_IO |
 114                                        PCI_COMMAND_MEMORY |
 115                                        PCI_COMMAND_MASTER }},
 116 #endif
 117         { }
 118 };
 119 #endif
 120
 121 struct pci_controller hose = {
 122 #ifndef CONFIG_PCI_PNP
 123         config_table: pci_sandpoint_config_table,
 124 #endif
 125 };
 126
 127 void pci_init_board(void)
 128 {
 129         pci_mpc824x_init(&hose);
 130 }