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
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
/*
* GPR board platform device registration (Au1550)
*
* Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/reboot.h>
#include <asm/mach-au1x00/au1000.h>
#include <prom.h>
const char *get_system_type(void)
{
return "GPR";
}
void __init prom_init(void)
{
unsigned char *memsize_str;
unsigned long memsize;
prom_argc = fw_arg0;
prom_argv = (char **)fw_arg1;
prom_envp = (char **)fw_arg2;
prom_init_cmdline();
memsize_str = prom_getenv("memsize");
if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
memsize = 0x04000000;
add_memory_region(0, memsize, BOOT_MEM_RAM);
}
void prom_putchar(unsigned char c)
{
alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
}
static void gpr_reset(char *c)
{
/* switch System-LED to orange (red# and green# on) */
alchemy_gpio_direction_output(4, 0);
alchemy_gpio_direction_output(5, 0);
/* trigger watchdog to reset board in 200ms */
printk(KERN_EMERG "Triggering watchdog soft reset...\n");
raw_local_irq_disable();
alchemy_gpio_direction_output(1, 0);
udelay(1);
alchemy_gpio_set_value(1, 1);
while (1)
cpu_wait();
}
static void gpr_power_off(void)
{
while (1)
cpu_wait();
}
void __init board_setup(void)
{
printk(KERN_INFO "Trapeze ITS GPR board\n");
pm_power_off = gpr_power_off;
_machine_halt = gpr_power_off;
_machine_restart = gpr_reset;
/* Enable UART1/3 */
alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
alchemy_uart_enable(AU1000_UART1_PHYS_ADDR);
/* Take away Reset of UMTS-card */
alchemy_gpio_direction_output(215, 1);
}
/*
* Watchdog
*/
static struct resource gpr_wdt_resource[] = {
[0] = {
.start = 1,
.end = 1,
.name = "gpr-adm6320-wdt",
.flags = IORESOURCE_IRQ,
}
};
static struct platform_device gpr_wdt_device = {
.name = "adm6320-wdt",
.id = 0,
.num_resources = ARRAY_SIZE(gpr_wdt_resource),
.resource = gpr_wdt_resource,
};
/*
* FLASH
*
* 0x00000000-0x00200000 : "kernel"
* 0x00200000-0x00a00000 : "rootfs"
* 0x01d00000-0x01f00000 : "config"
* 0x01c00000-0x01d00000 : "yamon"
* 0x01d00000-0x01d40000 : "yamon env vars"
* 0x00000000-0x00a00000 : "kernel+rootfs"
*/
static struct mtd_partition gpr_mtd_partitions[] = {
{
.name = "kernel",
.size = 0x00200000,
.offset = 0,
},
{
.name = "rootfs",
.size = 0x00800000,
.offset = MTDPART_OFS_APPEND,
.mask_flags = MTD_WRITEABLE,
},
{
.name = "config",
.size = 0x00200000,
.offset = 0x01d00000,
},
{
.name = "yamon",
.size = 0x00100000,
.offset = 0x01c00000,
},
{
.name = "yamon env vars",
.size = 0x00040000,
.offset = MTDPART_OFS_APPEND,
},
{
.name = "kernel+rootfs",
.size = 0x00a00000,
.offset = 0,
},
};
static struct physmap_flash_data gpr_flash_data = {
.width = 4,
.nr_parts = ARRAY_SIZE(gpr_mtd_partitions),
.parts = gpr_mtd_partitions,
};
static struct resource gpr_mtd_resource = {
.start = 0x1e000000,
.end = 0x1fffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device gpr_mtd_device = {
.name = "physmap-flash",
.dev = {
.platform_data = &gpr_flash_data,
},
.num_resources = 1,
.resource = &gpr_mtd_resource,
};
/*
* LEDs
*/
static struct gpio_led gpr_gpio_leds[] = {
{ /* green */
.name = "gpr:green",
.gpio = 4,
.active_low = 1,
},
{ /* red */
.name = "gpr:red",
.gpio = 5,
.active_low = 1,
}
};
static struct gpio_led_platform_data gpr_led_data = {
.num_leds = ARRAY_SIZE(gpr_gpio_leds),
.leds = gpr_gpio_leds,
};
static struct platform_device gpr_led_devices = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &gpr_led_data,
}
};
/*
* I2C
*/
static struct i2c_gpio_platform_data gpr_i2c_data = {
.sda_pin = 209,
.sda_is_open_drain = 1,
.scl_pin = 210,
.scl_is_open_drain = 1,
.udelay = 2, /* ~100 kHz */
.timeout = HZ,
};
static struct platform_device gpr_i2c_device = {
.name = "i2c-gpio",
.id = -1,
.dev.platform_data = &gpr_i2c_data,
};
static struct i2c_board_info gpr_i2c_info[] __initdata = {
{
I2C_BOARD_INFO("lm83", 0x18),
.type = "lm83"
}
};
static struct resource alchemy_pci_host_res[] = {
[0] = {
.start = AU1500_PCI_PHYS_ADDR,
.end = AU1500_PCI_PHYS_ADDR + 0xfff,
.flags = IORESOURCE_MEM,
},
};
static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
{
if ((slot == 0) && (pin == 1))
return AU1550_PCI_INTA;
else if ((slot == 0) && (pin == 2))
return AU1550_PCI_INTB;
return 0xff;
}
static struct alchemy_pci_platdata gpr_pci_pd = {
.board_map_irq = gpr_map_pci_irq,
.pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
PCI_CONFIG_CH |
#if defined(__MIPSEB__)
PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
#else
0,
#endif
};
static struct platform_device gpr_pci_host_dev = {
.dev.platform_data = &gpr_pci_pd,
.name = "alchemy-pci",
.id = 0,
.num_resources = ARRAY_SIZE(alchemy_pci_host_res),
.resource = alchemy_pci_host_res,
};
static struct platform_device *gpr_devices[] __initdata = {
&gpr_wdt_device,
&gpr_mtd_device,
&gpr_i2c_device,
&gpr_led_devices,
};
static int __init gpr_pci_init(void)
{
return platform_device_register(&gpr_pci_host_dev);
}
/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
arch_initcall(gpr_pci_init);
static int __init gpr_dev_init(void)
{
i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
}
device_initcall(gpr_dev_init);
|
