LXR linux/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 (dm@engr.sgi.com)
   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
  29unsigned long sgi_gfxaddr;
  30EXPORT_SYMBOL_GPL(sgi_gfxaddr);
  31
  32extern void ip22_be_init(void) __init;
  33
  34void __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}
 100