release/src-rt-6.x/linux/linux-2.6/arch/mips/mips-boards/sim/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/ioport.h>
  23 #include <linux/tty.h>
  24 #include <linux/serial.h>
  25 #include <linux/serial_core.h>
  26
  27 #include <asm/cpu.h>
  28 #include <asm/bootinfo.h>
  29 #include <asm/irq.h>
  30 #include <asm/mips-boards/generic.h>
  31 #include <asm/mips-boards/prom.h>
  32 #include <asm/serial.h>
  33 #include <asm/io.h>
  34 #include <asm/time.h>
  35 #include <asm/mips-boards/sim.h>
  36 #include <asm/mips-boards/simint.h>
  37
  38
  39 extern void sim_time_init(void);
  40 static void __init serial_init(void);
  41 unsigned int _isbonito = 0;
  42
  43 extern void __init sanitize_tlb_entries(void);
  44
  45
  46 const char *get_system_type(void)
  47 {
  48         return "MIPSsim";
  49 }
  50
  51 void __init plat_mem_setup(void)
  52 {
  53         set_io_port_base(0xbfd00000);
  54
  55         serial_init();
  56
  57         board_time_init = sim_time_init;
  58         pr_info("Linux started...\n");
  59
  60 #ifdef CONFIG_MIPS_MT_SMP
  61         sanitize_tlb_entries();
  62 #endif
  63 }
  64
  65 void prom_init(void)
  66 {
  67         set_io_port_base(0xbfd00000);
  68
  69         pr_info("\nLINUX started...\n");
  70         prom_init_cmdline();
  71         prom_meminit();
  72 }
  73
  74
  75 static void __init serial_init(void)
  76 {
  77 #ifdef CONFIG_SERIAL_8250
  78         struct uart_port s;
  79
  80         memset(&s, 0, sizeof(s));
  81
  82         s.iobase = 0x3f8;
  83
  84         /* hardware int 4 - the serial int, is CPU int 6
  85          but poll for now */
  86         s.irq =  0;
  87         s.uartclk = BASE_BAUD * 16;
  88         s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
  89         s.iotype = UPIO_PORT;
  90         s.regshift = 0;
  91         s.timeout = 4;
  92
  93         if (early_serial_setup(&s) != 0) {
  94                 printk(KERN_ERR "Serial setup failed!\n");
  95         }
  96
  97 #endif
  98 }