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/console.h>
  12 #include <linux/sched.h>
  13 #include <linux/tty.h>
  14
  15 #include <asm/addrspace.h>
  16 #include <asm/bcache.h>
  17 #include <asm/bootinfo.h>
  18 #include <asm/irq.h>
  19 #include <asm/reboot.h>
  20 #include <asm/time.h>
  21 #include <asm/io.h>
  22 #include <asm/traps.h>
  23 #include <asm/sgialib.h>
  24 #include <asm/sgi/mc.h>
  25 #include <asm/sgi/hpc3.h>
  26 #include <asm/sgi/ip22.h>
  27
  28 extern void ip22_be_init(void) __init;
  29
  30 void __init plat_mem_setup(void)
  31 {
  32         char *ctype;
  33         char *cserial;
  34
  35         board_be_init = ip22_be_init;
  36
  37         /* Init the INDY HPC I/O controller.  Need to call this before
  38          * fucking with the memory controller because it needs to know the
  39          * boardID and whether this is a Guiness or a FullHouse machine.
  40          */
  41         sgihpc_init();
  42
  43         /* Init INDY memory controller. */
  44         sgimc_init();
  45
  46 #ifdef CONFIG_BOARD_SCACHE
  47         /* Now enable boardcaches, if any. */
  48         indy_sc_init();
  49 #endif
  50
  51         /* Set EISA IO port base for Indigo2
  52          * ioremap cannot fail */
  53         set_io_port_base((unsigned long)ioremap(0x00080000,
  54                                                 0x1fffffff - 0x00080000));
  55         /* ARCS console environment variable is set to "g?" for
  56          * graphics console, it is set to "d" for the first serial
  57          * line and "d2" for the second serial line.
  58          *
  59          * Need to check if the case is 'g' but no keyboard:
  60          * (ConsoleIn/Out = serial)
  61          */
  62         ctype = ArcGetEnvironmentVariable("console");
  63         cserial = ArcGetEnvironmentVariable("ConsoleOut");
  64
  65         if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
  66                 static char options[8] __initdata;
  67                 char *baud = ArcGetEnvironmentVariable("dbaud");
  68                 if (baud)
  69                         strcpy(options, baud);
  70                 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
  71                                       baud ? options : NULL);
  72         } else if (!ctype || *ctype != 'g') {
  73                 /* Use ARC if we don't want serial ('d') or graphics ('g'). */
  74                 prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
  75                 add_preferred_console("arc", 0, NULL);
  76         }
  77 }