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 = 0;
  41
  42 extern void __init sanitize_tlb_entries(void);
  43
  44
  45 const char *get_system_type(void)
  46 {
  47         return "MIPSsim";
  48 }
  49
  50 void __init plat_mem_setup(void)
  51 {
  52         set_io_port_base(0xbfd00000);
  53
  54         serial_init();
  55
  56         pr_info("Linux started...\n");
  57
  58 #ifdef CONFIG_MIPS_MT_SMP
  59         sanitize_tlb_entries();
  60 #endif
  61 }
  62
  63 void __init prom_init(void)
  64 {
  65         set_io_port_base(0xbfd00000);
  66
  67         pr_info("\nLINUX started...\n");
  68         prom_init_cmdline();
  69         prom_meminit();
  70 }
  71
  72
  73 static void __init serial_init(void)
  74 {
  75 #ifdef CONFIG_SERIAL_8250
  76         struct uart_port s;
  77
  78         memset(&s, 0, sizeof(s));
  79
  80         s.iobase = 0x3f8;
  81
  82         /* hardware int 4 - the serial int, is CPU int 6
  83          but poll for now */
  84         s.irq =  0;
  85         s.uartclk = 1843200;
  86         s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
  87         s.iotype = UPIO_PORT;
  88         s.regshift = 0;
  89         s.timeout = 4;
  90
  91         if (early_serial_setup(&s) != 0) {
  92                 printk(KERN_ERR "Serial setup failed!\n");
  93         }
  94
  95 #endif
  96 }