board/dbau1x00/dbau1x00.c

   1 /*
   2  * (C) Copyright 2003
   3  * Thomas.Lange@corelatus.se
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <command.h>
  10 #include <asm/au1x00.h>
  11 #include <asm/mipsregs.h>
  12 #include <asm/io.h>
  13
  14 phys_size_t initdram(int board_type)
  15 {
  16         /* Sdram is setup by assembler code */
  17         /* If memory could be changed, we should return the true value here */
  18         return MEM_SIZE*1024*1024;
  19 }
  20
  21 #define BCSR_PCMCIA_PC0DRVEN            0x0010
  22 #define BCSR_PCMCIA_PC0RST              0x0080
  23
  24 /* In arch/mips/cpu/cpu.c */
  25 void write_one_tlb( int index, u32 pagemask, u32 hi, u32 low0, u32 low1 );
  26
  27 int checkboard (void)
  28 {
  29 #ifdef CONFIG_IDE_PCMCIA
  30         u16 status;
  31         volatile u32 *pcmcia_bcsr = (u32*)(DB1XX0_BCSR_ADDR+0x10);
  32 #endif  /* CONFIG_IDE_PCMCIA */
  33         volatile u32 *phy = (u32*)(DB1XX0_BCSR_ADDR+0xC);
  34         volatile u32 *sys_counter = (volatile u32*)SYS_COUNTER_CNTRL;
  35         u32 proc_id;
  36
  37         *sys_counter = 0x100; /* Enable 32 kHz oscillator for RTC/TOY */
  38
  39         proc_id = read_c0_prid();
  40
  41         switch (proc_id >> 24) {
  42         case 0:
  43                 puts ("Board: Merlot (DbAu1000)\n");
  44                 printf ("CPU: Au1000 396 MHz, id: 0x%02x, rev: 0x%02x\n",
  45                         (proc_id >> 8) & 0xFF, proc_id & 0xFF);
  46                 break;
  47         case 1:
  48                 puts ("Board: DbAu1500\n");
  49                 printf ("CPU: Au1500, id: 0x%02x, rev: 0x%02x\n",
  50                         (proc_id >> 8) & 0xFF, proc_id & 0xFF);
  51                 break;
  52         case 2:
  53                 puts ("Board: DbAu1100\n");
  54                 printf ("CPU: Au1100, id: 0x%02x, rev: 0x%02x\n",
  55                         (proc_id >> 8) & 0xFF, proc_id & 0xFF);
  56                 break;
  57         case 3:
  58                 puts ("Board: DbAu1550\n");
  59                 printf ("CPU: Au1550, id: 0x%02x, rev: 0x%02x\n",
  60                         (proc_id >> 8) & 0xFF, proc_id & 0xFF);
  61                 break;
  62         default:
  63                 printf ("Unsupported cpu %d, proc_id=0x%x\n", proc_id >> 24, proc_id);
  64         }
  65
  66         set_io_port_base(0);
  67
  68 #ifdef CONFIG_IDE_PCMCIA
  69         /* Enable 3.3 V on slot 0 ( VCC )
  70            No 5V */
  71         status = 4;
  72         *pcmcia_bcsr = status;
  73
  74         status |= BCSR_PCMCIA_PC0DRVEN;
  75         *pcmcia_bcsr = status;
  76         au_sync();
  77
  78         udelay(300*1000);
  79
  80         status |= BCSR_PCMCIA_PC0RST;
  81         *pcmcia_bcsr = status;
  82         au_sync();
  83
  84         udelay(100*1000);
  85
  86         /* PCMCIA is on a 36 bit physical address.
  87            We need to map it into a 32 bit addresses */
  88
  89 #if 0
  90         /* We dont need theese unless we run whole pcmcia package */
  91         write_one_tlb(20,                 /* index */
  92                       0x01ffe000,         /* Pagemask, 16 MB pages */
  93                       CONFIG_SYS_PCMCIA_IO_BASE, /* Hi */
  94                       0x3C000017,         /* Lo0 */
  95                       0x3C200017);        /* Lo1 */
  96
  97         write_one_tlb(21,                   /* index */
  98                       0x01ffe000,           /* Pagemask, 16 MB pages */
  99                       CONFIG_SYS_PCMCIA_ATTR_BASE, /* Hi */
 100                       0x3D000017,           /* Lo0 */
 101                       0x3D200017);          /* Lo1 */
 102 #endif  /* 0 */
 103         write_one_tlb(22,                   /* index */
 104                       0x01ffe000,           /* Pagemask, 16 MB pages */
 105                       CONFIG_SYS_PCMCIA_MEM_ADDR,  /* Hi */
 106                       0x3E000017,           /* Lo0 */
 107                       0x3E200017);          /* Lo1 */
 108 #endif  /* CONFIG_IDE_PCMCIA */
 109
 110         /* Release reset of ethernet PHY chips */
 111         /* Always do this, because linux does not know about it */
 112         *phy = 3;
 113
 114         return 0;
 115 }