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