release/src-rt-6.x/linux/linux-2.6/arch/mips/mips-boards/atlas/atlas_setup.c

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   4  *
   5  *  This program is free software; you can distribute it and/or modify it
   6  *  under the terms of the GNU General Public License (Version 2) as
   7  *  published by the Free Software Foundation.
   8  *
   9  *  This program is distributed in the hope it will be useful, but WITHOUT
  10  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  *  for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License along
  15  *  with this program; if not, write to the Free Software Foundation, Inc.,
  16  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17  */
  18 #include <linux/init.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/ioport.h>
  22 #include <linux/tty.h>
  23 #include <linux/serial.h>
  24 #include <linux/serial_core.h>
  25
  26 #include <asm/cpu.h>
  27 #include <asm/bootinfo.h>
  28 #include <asm/irq.h>
  29 #include <asm/mips-boards/generic.h>
  30 #include <asm/mips-boards/prom.h>
  31 #include <asm/mips-boards/atlas.h>
  32 #include <asm/mips-boards/atlasint.h>
  33 #include <asm/time.h>
  34 #include <asm/traps.h>
  35
  36 extern void mips_reboot_setup(void);
  37 extern void mips_time_init(void);
  38 extern unsigned long mips_rtc_get_time(void);
  39
  40 #ifdef CONFIG_KGDB
  41 extern void kgdb_config(void);
  42 #endif
  43
  44 static void __init serial_init(void);
  45
  46 const char *get_system_type(void)
  47 {
  48         return "MIPS Atlas";
  49 }
  50
  51 const char display_string[] = "        LINUX ON ATLAS       ";
  52
  53 void __init plat_mem_setup(void)
  54 {
  55         mips_pcibios_init();
  56
  57         ioport_resource.end = 0x7fffffff;
  58
  59         serial_init ();
  60
  61 #ifdef CONFIG_KGDB
  62         kgdb_config();
  63 #endif
  64         mips_reboot_setup();
  65
  66         board_time_init = mips_time_init;
  67         rtc_mips_get_time = mips_rtc_get_time;
  68 }
  69
  70 static void __init serial_init(void)
  71 {
  72 #ifdef CONFIG_SERIAL_8250
  73         struct uart_port s;
  74
  75         memset(&s, 0, sizeof(s));
  76
  77 #ifdef CONFIG_CPU_LITTLE_ENDIAN
  78         s.iobase = ATLAS_UART_REGS_BASE;
  79 #else
  80         s.iobase = ATLAS_UART_REGS_BASE+3;
  81 #endif
  82         s.irq = ATLAS_INT_UART;
  83         s.uartclk = ATLAS_BASE_BAUD * 16;
  84         s.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ;
  85         s.iotype = UPIO_PORT;
  86         s.regshift = 3;
  87
  88         if (early_serial_setup(&s) != 0) {
  89                 printk(KERN_ERR "Serial setup failed!\n");
  90         }
  91 #endif
  92 }