target/linux/ar7-2.6/files/arch/mips/ar7/setup.c

   1 /*
   2  * $Id$
   3  *
   4  * Copyright (C) 2006, 2007 OpenWrt.org
   5  *
   6  * Carsten Langgaard, carstenl@mips.com
   7  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
   8  *
   9  *  This program is free software; you can distribute it and/or modify it
  10  *  under the terms of the GNU General Public License (Version 2) as
  11  *  published by the Free Software Foundation.
  12  *
  13  *  This program is distributed in the hope it will be useful, but WITHOUT
  14  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  *  for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  21  */
  22 #include <linux/init.h>
  23 #include <linux/sched.h>
  24 #include <linux/ioport.h>
  25 #include <linux/pci.h>
  26 #include <linux/tty.h>
  27 #include <linux/pm.h>
  28 #include <linux/serial_8250.h>
  29 #include <linux/serial_core.h>
  30 #include <linux/serial.h>
  31 #include <linux/serial_reg.h>
  32
  33 #include <asm/cpu.h>
  34 #include <asm/irq.h>
  35 #include <asm/mips-boards/generic.h>
  36 #include <asm/mips-boards/prom.h>
  37 #include <asm/dma.h>
  38 #include <asm/time.h>
  39 #include <asm/traps.h>
  40 #include <asm/io.h>
  41 #include <asm/reboot.h>
  42 #include <asm/gdb-stub.h>
  43 #include <asm/ar7/ar7.h>
  44
  45 extern void ar7_time_init(void);
  46 static void ar7_machine_restart(char *command);
  47 static void ar7_machine_halt(void);
  48 static void ar7_machine_power_off(void);
  49
  50 static void ar7_machine_restart(char *command)
  51 {
  52         volatile u32 *softres_reg = (u32 *)ioremap(AR7_REGS_RESET +
  53                                                    AR7_RESET_SOFTWARE, 1);
  54         *softres_reg = 1;
  55 }
  56
  57 static void ar7_machine_halt(void)
  58 {
  59         while (1);
  60 }
  61
  62 static void ar7_machine_power_off(void)
  63 {
  64         volatile u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
  65         u32 power_state = *power_reg | (3 << 30);
  66         *power_reg = power_state;
  67         ar7_machine_halt();
  68 }
  69
  70 const char *get_system_type(void)
  71 {
  72         u16 chip_id = ar7_chip_id();
  73         switch (chip_id) {
  74         case AR7_CHIP_7300:
  75                 return "TI AR7 (TNETD7300)";
  76         case AR7_CHIP_7100:
  77                 return "TI AR7 (TNETD7100)";
  78         case AR7_CHIP_7200:
  79                 return "TI AR7 (TNETD7200)";
  80         default:
  81                 return "TI AR7 (Unknown)";
  82         }
  83 }
  84
  85 static int __init ar7_init_console(void)
  86 {
  87         return 0;
  88 }
  89
  90 /*
  91  * Initializes basic routines and structures pointers, memory size (as
  92  * given by the bios and saves the command line.
  93  */
  94
  95 extern void ar7_init_clocks(void);
  96
  97 void __init plat_mem_setup(void)
  98 {
  99         unsigned long io_base;
 100
 101         _machine_restart = ar7_machine_restart;
 102         _machine_halt = ar7_machine_halt;
 103         pm_power_off = ar7_machine_power_off;
 104         board_time_init = ar7_time_init;
 105         panic_timeout = 3;
 106
 107         io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
 108         if (!io_base) panic("Can't remap IO base!\n");
 109         set_io_port_base(io_base);
 110
 111         prom_meminit();
 112 #warning FIXME: clock initialisation
 113         ar7_init_clocks();
 114
 115         ioport_resource.start = 0;
 116         ioport_resource.end   = ~0;
 117         iomem_resource.start  = 0;
 118         iomem_resource.end    = ~0;
 119
 120         printk("%s, ID: 0x%04x, Revision: 0x%02x\n", get_system_type(),
 121                 ar7_chip_id(), ar7_chip_rev());
 122 }
 123
 124 console_initcall(ar7_init_console);