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
|
/*
* linux/arch/arm/mach-pxa/gumstix.c
*
* Support for the Gumstix motherboards.
*
* Original Author: Craig Hughes
* Created: Feb 14, 2008
* Copyright: Craig Hughes
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Implemented based on lubbock.c by Nicolas Pitre and code from Craig
* Hughes
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/gpio.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>
#include <mach/pxa25x.h>
#include <mach/mmc.h>
#include <mach/udc.h>
#include <mach/gumstix.h>
#include "generic.h"
static struct resource flash_resource = {
.start = 0x00000000,
.end = SZ_64M - 1,
.flags = IORESOURCE_MEM,
};
static struct mtd_partition gumstix_partitions[] = {
{
.name = "Bootloader",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE /* force read-only */
} , {
.name = "rootfs",
.size = MTDPART_SIZ_FULL,
.offset = MTDPART_OFS_APPEND
}
};
static struct flash_platform_data gumstix_flash_data = {
.map_name = "cfi_probe",
.parts = gumstix_partitions,
.nr_parts = ARRAY_SIZE(gumstix_partitions),
.width = 2,
};
static struct platform_device gumstix_flash_device = {
.name = "pxa2xx-flash",
.id = 0,
.dev = {
.platform_data = &gumstix_flash_data,
},
.resource = &flash_resource,
.num_resources = 1,
};
static struct platform_device *devices[] __initdata = {
&gumstix_flash_device,
};
#ifdef CONFIG_MMC_PXA
static struct pxamci_platform_data gumstix_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
};
static void __init gumstix_mmc_init(void)
{
pxa_set_mci_info(&gumstix_mci_platform_data);
}
#else
static void __init gumstix_mmc_init(void)
{
pr_debug("Gumstix mmc disabled\n");
}
#endif
#ifdef CONFIG_USB_GADGET_PXA25X
static struct gpio_vbus_mach_info gumstix_udc_info = {
.gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
.gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
};
static struct platform_device gumstix_gpio_vbus = {
.name = "gpio-vbus",
.id = -1,
.dev = {
.platform_data = &gumstix_udc_info,
},
};
static void __init gumstix_udc_init(void)
{
platform_device_register(&gumstix_gpio_vbus);
}
#else
static void gumstix_udc_init(void)
{
pr_debug("Gumstix udc is disabled\n");
}
#endif
#ifdef CONFIG_BT
/* Normally, the bootloader would have enabled this 32kHz clock but many
** boards still have u-boot 1.1.4 so we check if it has been turned on and
** if not, we turn it on with a warning message. */
static void gumstix_setup_bt_clock(void)
{
int timeout = 500;
if (!(OSCC & OSCC_OOK))
pr_warning("32kHz clock was not on. Bootloader may need to "
"be updated\n");
else
return;
OSCC |= OSCC_OON;
do {
if (OSCC & OSCC_OOK)
break;
udelay(1);
} while (--timeout);
if (!timeout)
pr_err("Failed to start 32kHz clock\n");
}
static void __init gumstix_bluetooth_init(void)
{
int err;
gumstix_setup_bt_clock();
err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST");
if (err) {
pr_err("gumstix: failed request gpio for bluetooth reset\n");
return;
}
err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1);
if (err) {
pr_err("gumstix: can't reset bluetooth\n");
return;
}
gpio_set_value(GPIO_GUMSTIX_BTRESET, 0);
udelay(100);
gpio_set_value(GPIO_GUMSTIX_BTRESET, 1);
}
#else
static void gumstix_bluetooth_init(void)
{
pr_debug("Gumstix Bluetooth is disabled\n");
}
#endif
static unsigned long gumstix_pin_config[] __initdata = {
GPIO12_32KHz,
/* BTUART */
GPIO42_HWUART_RXD,
GPIO43_HWUART_TXD,
GPIO44_HWUART_CTS,
GPIO45_HWUART_RTS,
/* MMC */
GPIO6_MMC_CLK,
GPIO53_MMC_CLK,
GPIO8_MMC_CS0,
};
int __attribute__((weak)) am200_init(void)
{
return 0;
}
int __attribute__((weak)) am300_init(void)
{
return 0;
}
static void __init carrier_board_init(void)
{
/*
* put carrier/expansion board init here if
* they cannot be detected programatically
*/
am200_init();
am300_init();
}
static void __init gumstix_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
pxa_set_hwuart_info(NULL);
gumstix_bluetooth_init();
gumstix_udc_init();
gumstix_mmc_init();
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
carrier_board_init();
}
MACHINE_START(GUMSTIX, "Gumstix")
.boot_params = 0xa0000100, /* match u-boot bi_boot_params */
.map_io = pxa25x_map_io,
.init_irq = pxa25x_init_irq,
.timer = &pxa_timer,
.init_machine = gumstix_init,
MACHINE_END
|
