PageRenderTime 20ms CodeModel.GetById 15ms app.highlight 3ms RepoModel.GetById 1ms app.codeStats 0ms

/Ethereal-msm8939-beta9/arch/mips/ar7/setup.c

https://bitbucket.org/MilosStamenkovic95/etherealos
C | 106 lines | 71 code | 14 blank | 21 comment | 4 complexity | 8d899b2bdade90c546434da65ebcbc36 MD5 | raw file
  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}