board/gdsys/dlvision/dlvision.c

   1 /*
   2  * (C) Copyright 2009
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.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 <asm/processor.h>
  27 #include <asm/io.h>
  28 #include <asm/ppc4xx-gpio.h>
  29
  30 enum {
  31         HWTYPE_DLVISION_CPU = 0,
  32         HWTYPE_DLVISION_CON = 1,
  33 };
  34
  35 #define HWREV_100       6
  36
  37 int board_early_init_f(void)
  38 {
  39         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  40         mtdcr(UIC0ER, 0x00000000);      /* disable all ints */
  41         mtdcr(UIC0CR, 0x00000000);      /* set all to be non-critical */
  42         mtdcr(UIC0PR, 0xFFFFFF80);      /* set int polarities */
  43         mtdcr(UIC0TR, 0x10000000);      /* set int trigger levels */
  44         mtdcr(UIC0VCR, 0x00000001);     /* set vect base=0,INT0 highest prio */
  45         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  46
  47         /*
  48          * EBC Configuration Register: set ready timeout to 512 ebc-clks
  49          * -> ca. 15 us
  50          */
  51         mtebc(EBC0_CFG, 0xa8400000);    /* ebc always driven */
  52
  53         /*
  54          * setup io-latches
  55          */
  56         out_le16((void *)CONFIG_SYS_LATCH_BASE, 0x00f0);
  57         out_le16((void *)(CONFIG_SYS_LATCH_BASE + 0x100), 0x0002);
  58         out_le16((void *)(CONFIG_SYS_LATCH_BASE + 0x200), 0x0000);
  59         return 0;
  60 }
  61
  62 int misc_init_r(void)
  63 {
  64         /*
  65          * set "startup-finished"-gpios
  66          */
  67         gpio_write_bit(21, 0);
  68         gpio_write_bit(22, 1);
  69
  70         return 0;
  71 }
  72
  73 /*
  74  * Check Board Identity:
  75  */
  76 int checkboard(void)
  77 {
  78         char *s = getenv("serial#");
  79         u8 channel2_msr = in_8((void *)CONFIG_UART_BASE + 0x26);
  80         u8 channel3_msr = in_8((void *)CONFIG_UART_BASE + 0x36);
  81         u8 channel7_msr = in_8((void *)CONFIG_UART_BASE + 0x76);
  82         u8 unit_type;
  83         u8 local_con;
  84         u8 audio;
  85         u8 hardware_version;
  86
  87         printf("Board: ");
  88
  89         unit_type = (channel2_msr & 0x80) ? 0x01 : 0x00;
  90         local_con = (channel2_msr & 0x20) ? 0x01 : 0x00;
  91         audio = (channel3_msr & 0x20) ? 0x01 : 0x00;
  92         hardware_version =
  93                   ((channel7_msr & 0x20) ? 0x01 : 0x00)
  94                 | ((channel7_msr & 0x80) ? 0x02 : 0x00)
  95                 | ((channel7_msr & 0x40) ? 0x04 : 0x00);
  96
  97         switch (unit_type) {
  98         case HWTYPE_DLVISION_CON:
  99                 printf("DL-Vision-CON");
 100                 break;
 101
 102         case HWTYPE_DLVISION_CPU:
 103                 printf("DL-Vision-CPU");
 104                 break;
 105
 106         default:
 107                 printf("UnitType %d, unsupported", unit_type);
 108                 break;
 109         }
 110
 111         if (s != NULL) {
 112                 puts(", serial# ");
 113                 puts(s);
 114         }
 115         puts("\n       ");
 116
 117         switch (hardware_version) {
 118         case HWREV_100:
 119                 printf("HW-Ver 1.00");
 120                 break;
 121
 122         default:
 123                 printf("HW-Ver %d, unsupported",
 124                        hardware_version);
 125                 break;
 126         }
 127
 128         if (local_con)
 129                 printf(", local console");
 130
 131         if (audio)
 132                 printf(", audio support");
 133
 134         puts("\n");
 135
 136         return 0;
 137 }