LXR linux/arch/mips/ar7/setup.c

   1/*
   2 * Carsten Langgaard, carstenl@mips.com
   3 * Copyright (C) 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/ioport.h>
  20#include <linux/pm.h>
  21#include <linux/time.h>
  22
  23#include <asm/reboot.h>
  24#include <asm/mach-ar7/ar7.h>
  25#include <asm/mach-ar7/prom.h>
  26
  27static void ar7_machine_restart(char *command)
  28{
  29        u32 *softres_reg = ioremap(AR7_REGS_RESET +
  30                                          AR7_RESET_SOFTWARE, 1);
  31        writel(1, softres_reg);
  32}
  33
  34static void ar7_machine_halt(void)
  35{
  36        while (1)
  37                ;
  38}
  39
  40static void ar7_machine_power_off(void)
  41{
  42        u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
  43        u32 power_state = readl(power_reg) | (3 << 30);
  44        writel(power_state, power_reg);
  45        ar7_machine_halt();
  46}
  47
  48const char *get_system_type(void)
  49{
  50        u16 chip_id = ar7_chip_id();
  51        switch (chip_id) {
  52        case AR7_CHIP_7300:
  53                return "TI AR7 (TNETD7300)";
  54        case AR7_CHIP_7100:
  55                return "TI AR7 (TNETD7100)";
  56        case AR7_CHIP_7200:
  57                return "TI AR7 (TNETD7200)";
  58        default:
  59                return "TI AR7 (Unknown)";
  60        }
  61}
  62
  63static int __init ar7_init_console(void)
  64{
  65        return 0;
  66}
  67console_initcall(ar7_init_console);
  68
  69/*
  70 * Initializes basic routines and structures pointers, memory size (as
  71 * given by the bios and saves the command line.
  72 */
  73
  74void __init plat_mem_setup(void)
  75{
  76        unsigned long io_base;
  77
  78        _machine_restart = ar7_machine_restart;
  79        _machine_halt = ar7_machine_halt;
  80        pm_power_off = ar7_machine_power_off;
  81        panic_timeout = 3;
  82
  83        io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
  84        if (!io_base)
  85                panic("Can't remap IO base!\n");
  86        set_io_port_base(io_base);
  87
  88        prom_meminit();
  89
  90        printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
  91                                        get_system_type(),
  92                ar7_chip_id(), ar7_chip_rev());
  93}
  94