arch/mips/sgi-ip22/ip22-setup.c

   1 /*
   2  * ip22-setup.c: SGI specific setup, including init of the feature struct.
   3  *
   4  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
   5  * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
   6  */
   7 #include <linux/init.h>
   8 #include <linux/kernel.h>
   9 #include <linux/kdev_t.h>
  10 #include <linux/types.h>
  11 #include <linux/module.h>
  12 #include <linux/console.h>
  13 #include <linux/sched.h>
  14 #include <linux/tty.h>
  15
  16 #include <asm/addrspace.h>
  17 #include <asm/bcache.h>
  18 #include <asm/bootinfo.h>
  19 #include <asm/irq.h>
  20 #include <asm/reboot.h>
  21 #include <asm/time.h>
  22 #include <asm/io.h>
  23 #include <asm/traps.h>
  24 #include <asm/sgialib.h>
  25 #include <asm/sgi/mc.h>
  26 #include <asm/sgi/hpc3.h>
  27 #include <asm/sgi/ip22.h>
  28
  29 unsigned long sgi_gfxaddr;
  30 EXPORT_SYMBOL_GPL(sgi_gfxaddr);
  31
  32 extern void ip22_be_init(void) __init;
  33
  34 void __init plat_mem_setup(void)
  35 {
  36         char *ctype;
  37         char *cserial;
  38
  39         board_be_init = ip22_be_init;
  40
  41         /* Init the INDY HPC I/O controller.  Need to call this before
  42          * fucking with the memory controller because it needs to know the
  43          * boardID and whether this is a Guiness or a FullHouse machine.
  44          */
  45         sgihpc_init();
  46
  47         /* Init INDY memory controller. */
  48         sgimc_init();
  49
  50 #ifdef CONFIG_BOARD_SCACHE
  51         /* Now enable boardcaches, if any. */
  52         indy_sc_init();
  53 #endif
  54
  55         /* Set EISA IO port base for Indigo2
  56          * ioremap cannot fail */
  57         set_io_port_base((unsigned long)ioremap(0x00080000,
  58                                                 0x1fffffff - 0x00080000));
  59         /* ARCS console environment variable is set to "g?" for
  60          * graphics console, it is set to "d" for the first serial
  61          * line and "d2" for the second serial line.
  62          *
  63          * Need to check if the case is 'g' but no keyboard:
  64          * (ConsoleIn/Out = serial)
  65          */
  66         ctype = ArcGetEnvironmentVariable("console");
  67         cserial = ArcGetEnvironmentVariable("ConsoleOut");
  68
  69         if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
  70                 static char options[8] __initdata;
  71                 char *baud = ArcGetEnvironmentVariable("dbaud");
  72                 if (baud)
  73                         strcpy(options, baud);
  74                 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
  75                                       baud ? options : NULL);
  76         } else if (!ctype || *ctype != 'g') {
  77                 /* Use ARC if we don't want serial ('d') or graphics ('g'). */
  78                 prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
  79                 add_preferred_console("arc", 0, NULL);
  80         }
  81
  82 #if defined(CONFIG_VT) && defined(CONFIG_SGI_NEWPORT_CONSOLE)
  83         {
  84                 ULONG *gfxinfo;
  85                 ULONG * (*__vec)(void) = (void *) (long)
  86                         *((_PULONG *)(long)((PROMBLOCK)->pvector + 0x20));
  87
  88                 gfxinfo = __vec();
  89                 sgi_gfxaddr = ((gfxinfo[1] >= 0xa0000000
  90                                && gfxinfo[1] <= 0xc0000000)
  91                                ? gfxinfo[1] - 0xa0000000 : 0);
  92
  93                 /* newport addresses? */
  94                 if (sgi_gfxaddr == 0x1f0f0000 || sgi_gfxaddr == 0x1f4f0000) {
  95                         conswitchp = &newport_con;
  96                 }
  97         }
  98 #endif
  99 }