1/*
2 *  linux/arch/arm/mach-ep93xx/micro9.c
3 *
4 * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
5 *                    Manfred Gruber <m.gruber@tirol.com>
6 * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
7 *                    Hubert Feurstein <hubert.feurstein@contec.at>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/platform_device.h>
17#include <linux/io.h>
18
19#include <mach/hardware.h>
20
21#include <asm/mach-types.h>
22#include <asm/mach/arch.h>
23
24#include "soc.h"
25
26/*************************************************************************
27 * Micro9 NOR Flash
28 *
29 * Micro9-High has up to 64MB of 32-bit flash on CS1
30 * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
31 * Micro9-Lite uses a separate MTD map driver for flash support
32 * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
33 *************************************************************************/
34static unsigned int __init micro9_detect_bootwidth(void)
35{
36	u32 v;
37
38	/* Detect the bus width of the external flash memory */
39	v = __raw_readl(EP93XX_SYSCON_SYSCFG);
40	if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
41		return 4; /* 32-bit */
42	else
43		return 2; /* 16-bit */
44}
45
46static void __init micro9_register_flash(void)
47{
48	unsigned int width;
49
50	if (machine_is_micro9())
51		width = 4;
52	else if (machine_is_micro9m() || machine_is_micro9s())
53		width = micro9_detect_bootwidth();
54	else
55		width = 0;
56
57	if (width)
58		ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
59}
60
61
62/*************************************************************************
63 * Micro9 Ethernet
64 *************************************************************************/
65static struct ep93xx_eth_data __initdata micro9_eth_data = {
66	.phy_id		= 0x1f,
67};
68
69
70static void __init micro9_init_machine(void)
71{
72	ep93xx_init_devices();
73	ep93xx_register_eth(&micro9_eth_data, 1);
74	micro9_register_flash();
75}
76
77
78#ifdef CONFIG_MACH_MICRO9H
79MACHINE_START(MICRO9, "Contec Micro9-High")
80	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
81	.atag_offset	= 0x100,
82	.map_io		= ep93xx_map_io,
83	.init_irq	= ep93xx_init_irq,
84	.init_time	= ep93xx_timer_init,
85	.init_machine	= micro9_init_machine,
86	.init_late	= ep93xx_init_late,
87	.restart	= ep93xx_restart,
88MACHINE_END
89#endif
90
91#ifdef CONFIG_MACH_MICRO9M
92MACHINE_START(MICRO9M, "Contec Micro9-Mid")
93	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
94	.atag_offset	= 0x100,
95	.map_io		= ep93xx_map_io,
96	.init_irq	= ep93xx_init_irq,
97	.init_time	= ep93xx_timer_init,
98	.init_machine	= micro9_init_machine,
99	.init_late	= ep93xx_init_late,
100	.restart	= ep93xx_restart,
101MACHINE_END
102#endif
103
104#ifdef CONFIG_MACH_MICRO9L
105MACHINE_START(MICRO9L, "Contec Micro9-Lite")
106	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
107	.atag_offset	= 0x100,
108	.map_io		= ep93xx_map_io,
109	.init_irq	= ep93xx_init_irq,
110	.init_time	= ep93xx_timer_init,
111	.init_machine	= micro9_init_machine,
112	.init_late	= ep93xx_init_late,
113	.restart	= ep93xx_restart,
114MACHINE_END
115#endif
116
117#ifdef CONFIG_MACH_MICRO9S
118MACHINE_START(MICRO9S, "Contec Micro9-Slim")
119	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
120	.atag_offset	= 0x100,
121	.map_io		= ep93xx_map_io,
122	.init_irq	= ep93xx_init_irq,
123	.init_time	= ep93xx_timer_init,
124	.init_machine	= micro9_init_machine,
125	.init_late	= ep93xx_init_late,
126	.restart	= ep93xx_restart,
127MACHINE_END
128#endif
129