board/gdsys/dlvision/dlvision.c

   1 /*
   2  * (C) Copyright 2009
   3  * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <asm/processor.h>
  11 #include <asm/io.h>
  12 #include <asm/ppc4xx-gpio.h>
  13
  14 enum {
  15         HWTYPE_DLVISION_CPU = 0,
  16         HWTYPE_DLVISION_CON = 1,
  17 };
  18
  19 #define HWREV_100       6
  20
  21 int board_early_init_f(void)
  22 {
  23         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  24         mtdcr(UIC0ER, 0x00000000);      /* disable all ints */
  25         mtdcr(UIC0CR, 0x00000000);      /* set all to be non-critical */
  26         mtdcr(UIC0PR, 0xFFFFFF80);      /* set int polarities */
  27         mtdcr(UIC0TR, 0x10000000);      /* set int trigger levels */
  28         mtdcr(UIC0VCR, 0x00000001);     /* set vect base=0,INT0 highest prio */
  29         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  30
  31         /*
  32          * EBC Configuration Register: set ready timeout to 512 ebc-clks
  33          * -> ca. 15 us
  34          */
  35         mtebc(EBC0_CFG, 0xa8400000);    /* ebc always driven */
  36
  37         /*
  38          * setup io-latches
  39          */
  40         out_le16((void *)CONFIG_SYS_LATCH_BASE, 0x00f0);
  41         out_le16((void *)(CONFIG_SYS_LATCH_BASE + 0x100), 0x0002);
  42         out_le16((void *)(CONFIG_SYS_LATCH_BASE + 0x200), 0x0000);
  43         return 0;
  44 }
  45
  46 int misc_init_r(void)
  47 {
  48         /*
  49          * set "startup-finished"-gpios
  50          */
  51         gpio_write_bit(21, 0);
  52         gpio_write_bit(22, 1);
  53
  54         return 0;
  55 }
  56
  57 /*
  58  * Check Board Identity:
  59  */
  60 int checkboard(void)
  61 {
  62         char buf[64];
  63         int i = getenv_f("serial#", buf, sizeof(buf));
  64         u8 channel2_msr = in_8((void *)CONFIG_UART_BASE + 0x26);
  65         u8 channel3_msr = in_8((void *)CONFIG_UART_BASE + 0x36);
  66         u8 channel7_msr = in_8((void *)CONFIG_UART_BASE + 0x76);
  67         u8 unit_type;
  68         u8 local_con;
  69         u8 audio;
  70         u8 hardware_version;
  71
  72         printf("Board: ");
  73
  74         unit_type = (channel2_msr & 0x80) ? 0x01 : 0x00;
  75         local_con = (channel2_msr & 0x20) ? 0x01 : 0x00;
  76         audio = (channel3_msr & 0x20) ? 0x01 : 0x00;
  77         hardware_version =
  78                   ((channel7_msr & 0x20) ? 0x01 : 0x00)
  79                 | ((channel7_msr & 0x80) ? 0x02 : 0x00)
  80                 | ((channel7_msr & 0x40) ? 0x04 : 0x00);
  81
  82         switch (unit_type) {
  83         case HWTYPE_DLVISION_CON:
  84                 printf("DL-Vision-CON");
  85                 break;
  86
  87         case HWTYPE_DLVISION_CPU:
  88                 printf("DL-Vision-CPU");
  89                 break;
  90
  91         default:
  92                 printf("UnitType %d, unsupported", unit_type);
  93                 break;
  94         }
  95
  96         if (i > 0) {
  97                 puts(", serial# ");
  98                 puts(buf);
  99         }
 100         puts("\n       ");
 101
 102         switch (hardware_version) {
 103         case HWREV_100:
 104                 printf("HW-Ver 1.00");
 105                 break;
 106
 107         default:
 108                 printf("HW-Ver %d, unsupported",
 109                        hardware_version);
 110                 break;
 111         }
 112
 113         if (local_con)
 114                 printf(", local console");
 115
 116         if (audio)
 117                 printf(", audio support");
 118
 119         puts("\n");
 120
 121         return 0;
 122 }