summaryrefslogtreecommitdiffstats
path: root/arch/arm/boards/at91sam9260ek/init.c
blob: d0a8458c9ade4560a924fe3572d03b946e96124f (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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
/*
 * Copyright (C) 2007 Sascha Hauer, Pengutronix
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 */

#include <common.h>
#include <net.h>
#include <init.h>
#include <environment.h>
#include <fec.h>
#include <asm/armlinux.h>
#include <generated/mach-types.h>
#include <partition.h>
#include <fs.h>
#include <fcntl.h>
#include <io.h>
#include <asm/hardware.h>
#include <nand.h>
#include <sizes.h>
#include <linux/mtd/nand.h>
#include <mach/board.h>
#include <mach/at91sam9_smc.h>
#include <mach/sam9_smc.h>
#include <gpio.h>
#include <mach/io.h>
#include <mach/at91_pmc.h>
#include <mach/at91_rstc.h>

/*
 * board revision encoding
 * bit 0:
 *	0 => 1 mmc
 *	1 => 2 mmcs (board from revision C)
 */
#define HAVE_2MMC	(1 << 0)
static void ek_set_board_type(void)
{
	if (machine_is_at91sam9g20ek()) {
		armlinux_set_architecture(MACH_TYPE_AT91SAM9G20EK);
#ifdef CONFIG_AT91_HAVE_2MMC
		armlinux_set_revision(HAVE_2MMC);
#endif
	} else {
		armlinux_set_architecture(MACH_TYPE_AT91SAM9260EK);
	}
}

static struct atmel_nand_data nand_pdata = {
	.ale		= 21,
	.cle		= 22,
/*	.det_pin	= ... not connected */
	.rdy_pin	= AT91_PIN_PC13,
	.enable_pin	= AT91_PIN_PC14,
#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
	.bus_width_16	= 1,
#else
	.bus_width_16	= 0,
#endif
	.on_flash_bbt	= 1,
};

static struct sam9_smc_config ek_9260_nand_smc_config = {
	.ncs_read_setup		= 0,
	.nrd_setup		= 1,
	.ncs_write_setup	= 0,
	.nwe_setup		= 1,

	.ncs_read_pulse		= 3,
	.nrd_pulse		= 3,
	.ncs_write_pulse	= 3,
	.nwe_pulse		= 3,

	.read_cycle		= 5,
	.write_cycle		= 5,

	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
	.tdf_cycles		= 2,
};

static struct sam9_smc_config ek_9g20_nand_smc_config = {
	.ncs_read_setup		= 0,
	.nrd_setup		= 2,
	.ncs_write_setup	= 0,
	.nwe_setup		= 2,

	.ncs_read_pulse		= 4,
	.nrd_pulse		= 4,
	.ncs_write_pulse	= 4,
	.nwe_pulse		= 4,

	.read_cycle		= 7,
	.write_cycle		= 7,

	.mode			= AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
	.tdf_cycles		= 3,
};

static void ek_add_device_nand(void)
{
	struct sam9_smc_config *smc;

	if (machine_is_at91sam9g20ek())
		smc = &ek_9g20_nand_smc_config;
	else
		smc = &ek_9260_nand_smc_config;

	/* setup bus-width (8 or 16) */
	if (nand_pdata.bus_width_16)
		smc->mode |= AT91_SMC_DBW_16;
	else
		smc->mode |= AT91_SMC_DBW_8;

	/* configure chip-select 3 (NAND) */
	sam9_smc_configure(3, smc);

	at91_add_device_nand(&nand_pdata);
}

static struct at91_ether_platform_data macb_pdata = {
	.flags    = AT91SAM_ETHER_RMII,
	.phy_addr = 0,
};

static void at91sam9260ek_phy_reset(void)
{
	unsigned long rstc;
	at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC);

	at91_set_gpio_input(AT91_PIN_PA14, 0);
	at91_set_gpio_input(AT91_PIN_PA15, 0);
	at91_set_gpio_input(AT91_PIN_PA17, 0);
	at91_set_gpio_input(AT91_PIN_PA25, 0);
	at91_set_gpio_input(AT91_PIN_PA26, 0);
	at91_set_gpio_input(AT91_PIN_PA28, 0);

	rstc = at91_sys_read(AT91_RSTC_MR) & AT91_RSTC_ERSTL;

	/* Need to reset PHY -> 500ms reset */
	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
				     (AT91_RSTC_ERSTL & (0x0d << 8)) |
				     AT91_RSTC_URSTEN);

	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);

	/* Wait for end hardware reset */
	while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));

	/* Restore NRST value */
	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
				     (rstc) |
				     AT91_RSTC_URSTEN);
}

/*
 * MCI (SD/MMC)
 */
#if defined(CONFIG_MCI_ATMEL)
static struct atmel_mci_platform_data __initdata ek_mci_data = {
	.bus_width	= 4,
	.slot_b		= 1,
};

static void ek_usb_add_device_mci(void)
{
	if (machine_is_at91sam9g20ek())
		ek_mci_data.detect_pin = AT91_PIN_PC9;

	at91_add_device_mci(0, &ek_mci_data);
}
#else
static void ek_usb_add_device_mci(void) {}
#endif

/*
 * USB Host port
 */
static struct at91_usbh_data __initdata ek_usbh_data = {
	.ports		= 2,
};

/*
 * USB Device port
 */
static struct at91_udc_data __initdata ek_udc_data = {
	.vbus_pin	= AT91_PIN_PC5,
	.pullup_pin	= -EINVAL,		/* pull-up driven by UDC */
};

struct gpio_led leds[] = {
	{
		.gpio	= AT91_PIN_PA6,
		.active_low	= 1,
		.led	= {
			.name = "ds5",
		},
	}, {
		.gpio	= AT91_PIN_PA9,
		.led	= {
			.name = "ds3",
		},
	},
};

static void __init ek_add_led(void)
{
	int i;

#ifdef CONFIG_AT91_HAVE_2MMC
	leds[0].gpio = AT91_PIN_PB8;
	leds[1].gpio = AT91_PIN_PB9;
#endif

	for (i = 0; i < ARRAY_SIZE(leds); i++) {
		at91_set_gpio_output(leds[i].gpio, leds[i].active_low);
		led_gpio_register(&leds[i]);
	}
	led_set_trigger(LED_TRIGGER_HEARTBEAT, &leds[1].led);
}

static int at91sam9260ek_mem_init(void)
{
	at91_add_device_sdram(0);

	return 0;
}
mem_initcall(at91sam9260ek_mem_init);

static void __init ek_add_device_buttons(void)
{
	at91_set_gpio_input(AT91_PIN_PA30, 1);	/* btn3 */
	at91_set_deglitch(AT91_PIN_PA30, 1);
	export_env_ull("dfu_button", AT91_PIN_PA30);
	at91_set_gpio_input(AT91_PIN_PA31, 1);	/* btn4 */
	at91_set_deglitch(AT91_PIN_PA31, 1);
	export_env_ull("btn4", AT91_PIN_PA31);
}

static int at91sam9260ek_devices_init(void)
{
	ek_add_device_nand();
	at91sam9260ek_phy_reset();
	at91_add_device_eth(0, &macb_pdata);
	at91_add_device_usbh_ohci(&ek_usbh_data);
	at91_add_device_udc(&ek_udc_data);
	ek_usb_add_device_mci();
	ek_add_device_buttons();
	ek_add_led();

	armlinux_set_bootparams((void *)(AT91_CHIPSELECT_1 + 0x100));
	ek_set_board_type();

	devfs_add_partition("nand0", 0x00000, SZ_128K, DEVFS_PARTITION_FIXED, "at91bootstrap_raw");
	dev_add_bb_dev("at91bootstrap_raw", "at91bootstrap");
	devfs_add_partition("nand0", SZ_128K, SZ_256K, DEVFS_PARTITION_FIXED, "self_raw");
	dev_add_bb_dev("self_raw", "self0");
	devfs_add_partition("nand0", SZ_256K + SZ_128K, SZ_128K, DEVFS_PARTITION_FIXED, "env_raw");
	dev_add_bb_dev("env_raw", "env0");
	devfs_add_partition("nand0", SZ_512K, SZ_128K, DEVFS_PARTITION_FIXED, "env_raw1");
	dev_add_bb_dev("env_raw1", "env1");

	return 0;
}

device_initcall(at91sam9260ek_devices_init);

static int at91sam9260ek_console_init(void)
{
	at91_register_uart(0, 0);
	return 0;
}

console_initcall(at91sam9260ek_console_init);