summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ep93xx/ts72xx.c
blob: e24566b88a783744059639191d35af51db83aba4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/*
 * arch/arm/mach-ep93xx/ts72xx.c
 * Technologic Systems TS72xx SBC support.
 *
 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/m48t86.h>
#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

static struct map_desc ts72xx_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_MODEL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
		.length		= TS72XX_MODEL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_OPTIONS_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
		.length		= TS72XX_OPTIONS_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_OPTIONS2_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
		.length		= TS72XX_OPTIONS2_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_RTC_INDEX_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE),
		.length		= TS72XX_RTC_INDEX_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_RTC_DATA_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE),
		.length		= TS72XX_RTC_DATA_SIZE,
		.type		= MT_DEVICE,
	}
};

static struct map_desc ts72xx_nand_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_NAND_DATA_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
		.length		= TS72XX_NAND_DATA_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_CONTROL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
		.length		= TS72XX_NAND_CONTROL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_BUSY_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
		.length		= TS72XX_NAND_BUSY_SIZE,
		.type		= MT_DEVICE,
	}
};

static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
	{
		.virtual	= TS72XX_NAND_DATA_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
		.length		= TS72XX_NAND_DATA_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_CONTROL_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
		.length		= TS72XX_NAND_CONTROL_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= TS72XX_NAND_BUSY_VIRT_BASE,
		.pfn		= __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
		.length		= TS72XX_NAND_BUSY_SIZE,
		.type		= MT_DEVICE,
	}
};

static void __init ts72xx_map_io(void)
{
	ep93xx_map_io();
	iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));

	/*
	 * The TS-7200 has NOR flash, the other models have NAND flash.
	 */
	if (!board_is_ts7200()) {
		if (is_ts9420_installed()) {
			iotable_init(ts72xx_alternate_nand_io_desc,
				ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
		} else {
			iotable_init(ts72xx_nand_io_desc,
				ARRAY_SIZE(ts72xx_nand_io_desc));
		}
	}
}

static unsigned char ts72xx_rtc_readbyte(unsigned long addr)
{
	__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
	return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
}

static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr)
{
	__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
	__raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
}

static struct m48t86_ops ts72xx_rtc_ops = {
	.readbyte		= ts72xx_rtc_readbyte,
	.writebyte		= ts72xx_rtc_writebyte,
};

static struct platform_device ts72xx_rtc_device = {
	.name			= "rtc-m48t86",
	.id			= -1,
	.dev			= {
		.platform_data		= &ts72xx_rtc_ops,
	},
	.num_resources		= 0,
};

static void __init ts72xx_init_machine(void)
{
	ep93xx_init_devices();
	if (board_is_ts7200())
		physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL);
	platform_device_register(&ts72xx_rtc_device);
}

MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.phys_io	= EP93XX_APB_PHYS_BASE,
	.io_pg_offst	= ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params	= 0x00000100,
	.map_io		= ts72xx_map_io,
	.init_irq	= ep93xx_init_irq,
	.timer		= &ep93xx_timer,
	.init_machine	= ts72xx_init_machine,
MACHINE_END
OpenPOWER on IntegriCloud