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#include <asm/mach-ar7/gpio.h>
  27
  28static void ar7_machine_restart(char *command)
  29{
  30        u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1);
  31
  32        writel(1, softres_reg);
  33}
  34
  35static void ar7_machine_halt(void)
  36{
  37        while (1)
  38                ;
  39}
  40
  41static void ar7_machine_power_off(void)
  42{
  43        u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
  44        u32 power_state = readl(power_reg) | (3 << 30);
  45
  46        writel(power_state, power_reg);
  47        ar7_machine_halt();
  48}
  49
  50const char *get_system_type(void)
  51{
  52        u16 chip_id = ar7_chip_id();
  53        u16 titan_variant_id = titan_chip_id();
  54
  55        switch (chip_id) {
  56        case AR7_CHIP_7100:
  57                return "TI AR7 (TNETD7100)";
  58        case AR7_CHIP_7200:
  59                return "TI AR7 (TNETD7200)";
  60        case AR7_CHIP_7300:
  61                return "TI AR7 (TNETD7300)";
  62        case AR7_CHIP_TITAN:
  63                switch (titan_variant_id) {
  64                case TITAN_CHIP_1050:
  65                        return "TI AR7 (TNETV1050)";
  66                case TITAN_CHIP_1055:
  67                        return "TI AR7 (TNETV1055)";
  68                case TITAN_CHIP_1056:
  69                        return "TI AR7 (TNETV1056)";
  70                case TITAN_CHIP_1060:
  71                        return "TI AR7 (TNETV1060)";
  72                }
  73        default:
  74                return "TI AR7 (unknown)";
  75        }
  76}
  77
  78static int __init ar7_init_console(void)
  79{
  80        return 0;
  81}
  82console_initcall(ar7_init_console);
  83
  84/*
  85 * Initializes basic routines and structures pointers, memory size (as
  86 * given by the bios and saves the command line.
  87 */
  88void __init plat_mem_setup(void)
  89{
  90        unsigned long io_base;
  91
  92        _machine_restart = ar7_machine_restart;
  93        _machine_halt = ar7_machine_halt;
  94        pm_power_off = ar7_machine_power_off;
  95        panic_timeout = 3;
  96
  97        io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
  98        if (!io_base)
  99                panic("Can't remap IO base!");
 100        set_io_port_base(io_base);
 101
 102        prom_meminit();
 103
 104        printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
 105                        get_system_type(), ar7_chip_id(), ar7_chip_rev());
 106}
 107