release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/mipssim/sim_setup.c

   1 /*
   2  * Copyright (C) 2005 MIPS Technologies, Inc.  All rights reserved.
   3  *
   4  *  This program is free software; you can distribute it and/or modify it
   5  *  under the terms of the GNU General Public License (Version 2) as
   6  *  published by the Free Software Foundation.
   7  *
   8  *  This program is distributed in the hope it will be useful, but WITHOUT
   9  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  *  for more details.
  12  *
  13  *  You should have received a copy of the GNU General Public License along
  14  *  with this program; if not, write to the Free Software Foundation, Inc.,
  15  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  16  *
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/string.h>
  21 #include <linux/kernel.h>
  22 #include <linux/io.h>
  23 #include <linux/irq.h>
  24 #include <linux/ioport.h>
  25 #include <linux/tty.h>
  26 #include <linux/serial.h>
  27 #include <linux/serial_core.h>
  28 #include <linux/serial_8250.h>
  29
  30 #include <asm/cpu.h>
  31 #include <asm/bootinfo.h>
  32 #include <asm/mips-boards/generic.h>
  33 #include <asm/mips-boards/prom.h>
  34 #include <asm/time.h>
  35 #include <asm/mips-boards/sim.h>
  36 #include <asm/mips-boards/simint.h>
  37
  38
  39 static void __init serial_init(void);
  40 unsigned int _isbonito;
  41
  42 const char *get_system_type(void)
  43 {
  44         return "MIPSsim";
  45 }
  46
  47 void __init plat_mem_setup(void)
  48 {
  49         set_io_port_base(0xbfd00000);
  50
  51         serial_init();
  52 }
  53
  54 extern struct plat_smp_ops ssmtc_smp_ops;
  55
  56 void __init prom_init(void)
  57 {
  58         set_io_port_base(0xbfd00000);
  59
  60         prom_meminit();
  61
  62 #ifdef CONFIG_MIPS_MT_SMP
  63         if (cpu_has_mipsmt)
  64                 register_smp_ops(&vsmp_smp_ops);
  65         else
  66                 register_smp_ops(&up_smp_ops);
  67 #endif
  68 #ifdef CONFIG_MIPS_MT_SMTC
  69         if (cpu_has_mipsmt)
  70                 register_smp_ops(&ssmtc_smp_ops);
  71         else
  72                 register_smp_ops(&up_smp_ops);
  73 #endif
  74 }
  75
  76 static void __init serial_init(void)
  77 {
  78 #ifdef CONFIG_SERIAL_8250
  79         struct uart_port s;
  80
  81         memset(&s, 0, sizeof(s));
  82
  83         s.iobase = 0x3f8;
  84
  85         /* hardware int 4 - the serial int, is CPU int 6
  86          but poll for now */
  87         s.irq =  0;
  88         s.uartclk = 1843200;
  89         s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
  90         s.iotype = UPIO_PORT;
  91         s.regshift = 0;
  92         s.timeout = 4;
  93
  94         if (early_serial_setup(&s) != 0) {
  95                 printk(KERN_ERR "Serial setup failed!\n");
  96         }
  97
  98 #endif
  99 }