summaryrefslogtreecommitdiff
path: root/arch/arm/mach-at91/setup.c
blob: 4e58bc90ed218291b30bfe44b4a5969a80134a40 (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
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
/*
 * Copyright (C) 2007 Atmel Corporation.
 * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
 *
 * Under GPLv2
 */

#define pr_fmt(fmt)	"AT91: " fmt

#include <linux/module.h>
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/pm.h>
#include <linux/of_address.h>
#include <linux/pinctrl/machine.h>
#include <linux/clk/at91_pmc.h>

#include <asm/system_misc.h>
#include <asm/mach/map.h>

#include <mach/hardware.h>
#include <mach/cpu.h>
#include <mach/at91_dbgu.h>

#include "generic.h"
#include "pm.h"

struct at91_socinfo at91_soc_initdata;
EXPORT_SYMBOL(at91_soc_initdata);

static struct map_desc at91_io_desc __initdata __maybe_unused = {
	.virtual	= (unsigned long)AT91_VA_BASE_SYS,
	.pfn		= __phys_to_pfn(AT91_BASE_SYS),
	.length		= SZ_16K,
	.type		= MT_DEVICE,
};

static struct map_desc at91_alt_io_desc __initdata __maybe_unused = {
	.virtual	= (unsigned long)AT91_ALT_VA_BASE_SYS,
	.pfn		= __phys_to_pfn(AT91_ALT_BASE_SYS),
	.length		= 24 * SZ_1K,
	.type		= MT_DEVICE,
};

static void __init soc_detect(u32 dbgu_base)
{
	u32 cidr, socid;

	cidr = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
	socid = cidr & ~AT91_CIDR_VERSION;

	switch (socid) {
	case ARCH_ID_AT91RM9200:
		at91_soc_initdata.type = AT91_SOC_RM9200;
		if (at91_soc_initdata.subtype == AT91_SOC_SUBTYPE_UNKNOWN)
			at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
		break;

	case ARCH_ID_AT91SAM9260:
		at91_soc_initdata.type = AT91_SOC_SAM9260;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
		break;

	case ARCH_ID_AT91SAM9261:
		at91_soc_initdata.type = AT91_SOC_SAM9261;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
		break;

	case ARCH_ID_AT91SAM9263:
		at91_soc_initdata.type = AT91_SOC_SAM9263;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
		break;

	case ARCH_ID_AT91SAM9G20:
		at91_soc_initdata.type = AT91_SOC_SAM9G20;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
		break;

	case ARCH_ID_AT91SAM9G45:
		at91_soc_initdata.type = AT91_SOC_SAM9G45;
		if (cidr == ARCH_ID_AT91SAM9G45ES)
			at91_soc_initdata.subtype = AT91_SOC_SAM9G45ES;
		break;

	case ARCH_ID_AT91SAM9RL64:
		at91_soc_initdata.type = AT91_SOC_SAM9RL;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
		break;

	case ARCH_ID_AT91SAM9X5:
		at91_soc_initdata.type = AT91_SOC_SAM9X5;
		break;

	case ARCH_ID_AT91SAM9N12:
		at91_soc_initdata.type = AT91_SOC_SAM9N12;
		break;

	case ARCH_ID_SAMA5:
		at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
		if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
			at91_soc_initdata.type = AT91_SOC_SAMA5D3;
		}
		break;
	}

	/* at91sam9g10 */
	if ((socid & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
		at91_soc_initdata.type = AT91_SOC_SAM9G10;
		at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
	}
	/* at91sam9xe */
	else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) {
		at91_soc_initdata.type = AT91_SOC_SAM9260;
		at91_soc_initdata.subtype = AT91_SOC_SAM9XE;
	}

	if (!at91_soc_is_detected())
		return;

	at91_soc_initdata.cidr = cidr;

	/* sub version of soc */
	if (!at91_soc_initdata.exid)
		at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);

	if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
		switch (at91_soc_initdata.exid) {
		case ARCH_EXID_AT91SAM9M10:
			at91_soc_initdata.subtype = AT91_SOC_SAM9M10;
			break;
		case ARCH_EXID_AT91SAM9G46:
			at91_soc_initdata.subtype = AT91_SOC_SAM9G46;
			break;
		case ARCH_EXID_AT91SAM9M11:
			at91_soc_initdata.subtype = AT91_SOC_SAM9M11;
			break;
		}
	}

	if (at91_soc_initdata.type == AT91_SOC_SAM9X5) {
		switch (at91_soc_initdata.exid) {
		case ARCH_EXID_AT91SAM9G15:
			at91_soc_initdata.subtype = AT91_SOC_SAM9G15;
			break;
		case ARCH_EXID_AT91SAM9G35:
			at91_soc_initdata.subtype = AT91_SOC_SAM9G35;
			break;
		case ARCH_EXID_AT91SAM9X35:
			at91_soc_initdata.subtype = AT91_SOC_SAM9X35;
			break;
		case ARCH_EXID_AT91SAM9G25:
			at91_soc_initdata.subtype = AT91_SOC_SAM9G25;
			break;
		case ARCH_EXID_AT91SAM9X25:
			at91_soc_initdata.subtype = AT91_SOC_SAM9X25;
			break;
		}
	}

	if (at91_soc_initdata.type == AT91_SOC_SAMA5D3) {
		switch (at91_soc_initdata.exid) {
		case ARCH_EXID_SAMA5D31:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D31;
			break;
		case ARCH_EXID_SAMA5D33:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D33;
			break;
		case ARCH_EXID_SAMA5D34:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D34;
			break;
		case ARCH_EXID_SAMA5D35:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D35;
			break;
		case ARCH_EXID_SAMA5D36:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D36;
			break;
		}
	}
}

static void __init alt_soc_detect(u32 dbgu_base)
{
	u32 cidr, socid;

	/* SoC ID */
	cidr = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
	socid = cidr & ~AT91_CIDR_VERSION;

	switch (socid) {
	case ARCH_ID_SAMA5:
		at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
		if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
			at91_soc_initdata.type = AT91_SOC_SAMA5D3;
		} else if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D4) {
			at91_soc_initdata.type = AT91_SOC_SAMA5D4;
		}
		break;
	}

	if (!at91_soc_is_detected())
		return;

	at91_soc_initdata.cidr = cidr;

	/* sub version of soc */
	if (!at91_soc_initdata.exid)
		at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);

	if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) {
		switch (at91_soc_initdata.exid) {
		case ARCH_EXID_SAMA5D41:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D41;
			break;
		case ARCH_EXID_SAMA5D42:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D42;
			break;
		case ARCH_EXID_SAMA5D43:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D43;
			break;
		case ARCH_EXID_SAMA5D44:
			at91_soc_initdata.subtype = AT91_SOC_SAMA5D44;
			break;
		}
	}
}

static const char *soc_name[] = {
	[AT91_SOC_RM9200]	= "at91rm9200",
	[AT91_SOC_SAM9260]	= "at91sam9260",
	[AT91_SOC_SAM9261]	= "at91sam9261",
	[AT91_SOC_SAM9263]	= "at91sam9263",
	[AT91_SOC_SAM9G10]	= "at91sam9g10",
	[AT91_SOC_SAM9G20]	= "at91sam9g20",
	[AT91_SOC_SAM9G45]	= "at91sam9g45",
	[AT91_SOC_SAM9RL]	= "at91sam9rl",
	[AT91_SOC_SAM9X5]	= "at91sam9x5",
	[AT91_SOC_SAM9N12]	= "at91sam9n12",
	[AT91_SOC_SAMA5D3]	= "sama5d3",
	[AT91_SOC_SAMA5D4]	= "sama5d4",
	[AT91_SOC_UNKNOWN]	= "Unknown",
};

const char *at91_get_soc_type(struct at91_socinfo *c)
{
	return soc_name[c->type];
}
EXPORT_SYMBOL(at91_get_soc_type);

static const char *soc_subtype_name[] = {
	[AT91_SOC_RM9200_BGA]	= "at91rm9200 BGA",
	[AT91_SOC_RM9200_PQFP]	= "at91rm9200 PQFP",
	[AT91_SOC_SAM9XE]	= "at91sam9xe",
	[AT91_SOC_SAM9G45ES]	= "at91sam9g45es",
	[AT91_SOC_SAM9M10]	= "at91sam9m10",
	[AT91_SOC_SAM9G46]	= "at91sam9g46",
	[AT91_SOC_SAM9M11]	= "at91sam9m11",
	[AT91_SOC_SAM9G15]	= "at91sam9g15",
	[AT91_SOC_SAM9G35]	= "at91sam9g35",
	[AT91_SOC_SAM9X35]	= "at91sam9x35",
	[AT91_SOC_SAM9G25]	= "at91sam9g25",
	[AT91_SOC_SAM9X25]	= "at91sam9x25",
	[AT91_SOC_SAMA5D31]	= "sama5d31",
	[AT91_SOC_SAMA5D33]	= "sama5d33",
	[AT91_SOC_SAMA5D34]	= "sama5d34",
	[AT91_SOC_SAMA5D35]	= "sama5d35",
	[AT91_SOC_SAMA5D36]	= "sama5d36",
	[AT91_SOC_SAMA5D41]	= "sama5d41",
	[AT91_SOC_SAMA5D42]	= "sama5d42",
	[AT91_SOC_SAMA5D43]	= "sama5d43",
	[AT91_SOC_SAMA5D44]	= "sama5d44",
	[AT91_SOC_SUBTYPE_NONE]	= "None",
	[AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown",
};

const char *at91_get_soc_subtype(struct at91_socinfo *c)
{
	return soc_subtype_name[c->subtype];
}
EXPORT_SYMBOL(at91_get_soc_subtype);

void __init at91_map_io(void)
{
	/* Map peripherals */
	iotable_init(&at91_io_desc, 1);

	at91_soc_initdata.type = AT91_SOC_UNKNOWN;
	at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;

	soc_detect(AT91_BASE_DBGU0);
	if (!at91_soc_is_detected())
		soc_detect(AT91_BASE_DBGU1);

	if (!at91_soc_is_detected())
		panic(pr_fmt("Impossible to detect the SOC type"));

	pr_info("Detected soc type: %s\n",
		at91_get_soc_type(&at91_soc_initdata));
	if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
		pr_info("Detected soc subtype: %s\n",
			at91_get_soc_subtype(&at91_soc_initdata));
}

void __init at91_alt_map_io(void)
{
	/* Map peripherals */
	iotable_init(&at91_alt_io_desc, 1);

	at91_soc_initdata.type = AT91_SOC_UNKNOWN;
	at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;

	alt_soc_detect(AT91_BASE_DBGU2);
	if (!at91_soc_is_detected())
		panic("AT91: Impossible to detect the SOC type");

	pr_info("AT91: Detected soc type: %s\n",
		at91_get_soc_type(&at91_soc_initdata));
	if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
		pr_info("AT91: Detected soc subtype: %s\n",
			at91_get_soc_subtype(&at91_soc_initdata));
}

void __iomem *at91_matrix_base;
EXPORT_SYMBOL_GPL(at91_matrix_base);

void __init at91_ioremap_matrix(u32 base_addr)
{
	at91_matrix_base = ioremap(base_addr, 512);
	if (!at91_matrix_base)
		panic(pr_fmt("Impossible to ioremap at91_matrix_base\n"));
}