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
96	io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
97	if (!io_base)
98		panic("Can't remap IO base!");
99	set_io_port_base(io_base);
100
101	prom_meminit();
102
103	printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
104			get_system_type(), ar7_chip_id(), ar7_chip_rev());
105}
106