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

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  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 extern void ip22_be_init(void) __init;
 30 
 31 void __init plat_mem_setup(void)
 32 {
 33         char *ctype;
 34         char *cserial;
 35 
 36         board_be_init = ip22_be_init;
 37 
 38         /* Init the INDY HPC I/O controller.  Need to call this before
 39          * fucking with the memory controller because it needs to know the
 40          * boardID and whether this is a Guiness or a FullHouse machine.
 41          */
 42         sgihpc_init();
 43 
 44         /* Init INDY memory controller. */
 45         sgimc_init();
 46 
 47 #ifdef CONFIG_BOARD_SCACHE
 48         /* Now enable boardcaches, if any. */
 49         indy_sc_init();
 50 #endif
 51 
 52         /* Set EISA IO port base for Indigo2
 53          * ioremap cannot fail */
 54         set_io_port_base((unsigned long)ioremap(0x00080000,
 55                                                 0x1fffffff - 0x00080000));
 56         /* ARCS console environment variable is set to "g?" for
 57          * graphics console, it is set to "d" for the first serial
 58          * line and "d2" for the second serial line.
 59          *
 60          * Need to check if the case is 'g' but no keyboard:
 61          * (ConsoleIn/Out = serial)
 62          */
 63         ctype = ArcGetEnvironmentVariable("console");
 64         cserial = ArcGetEnvironmentVariable("ConsoleOut");
 65 
 66         if ((ctype && *ctype == 'd') || (cserial && *cserial == 's')) {
 67                 static char options[8] __initdata;
 68                 char *baud = ArcGetEnvironmentVariable("dbaud");
 69                 if (baud)
 70                         strcpy(options, baud);
 71                 add_preferred_console("ttyS", *(ctype + 1) == '2' ? 1 : 0,
 72                                       baud ? options : NULL);
 73         } else if (!ctype || *ctype != 'g') {
 74                 /* Use ARC if we don't want serial ('d') or graphics ('g'). */
 75                 prom_flags |= PROM_FLAG_USE_AS_CONSOLE;
 76                 add_preferred_console("arc", 0, NULL);
 77         }
 78 }
 79 

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