summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-vexpress/v2m.c
blob: b2fea70d412de3463c9f7b835666c95c9fa4f3e2 (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
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
/*
 * Versatile Express V2M Motherboard Support
 */
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
#include <linux/smsc911x.h>
#include <linux/spinlock.h>
#include <linux/usb/isp1760.h>
#include <linux/mtd/physmap.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/vexpress.h>
#include <linux/clkdev.h>

#include <asm/mach-types.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/hardware/timer-sp.h>

#include <mach/ct-ca9x4.h>
#include <mach/motherboard.h>

#include <plat/sched_clock.h>
#include <plat/platsmp.h>

#include "core.h"

#define V2M_PA_CS0	0x40000000
#define V2M_PA_CS1	0x44000000
#define V2M_PA_CS2	0x48000000
#define V2M_PA_CS3	0x4c000000
#define V2M_PA_CS7	0x10000000

static struct map_desc v2m_io_desc[] __initdata = {
	{
		.virtual	= V2M_PERIPH,
		.pfn		= __phys_to_pfn(V2M_PA_CS7),
		.length		= SZ_128K,
		.type		= MT_DEVICE,
	},
};

static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
{
	if (WARN_ON(!base || irq == NO_IRQ))
		return;

	sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
	sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
}


static struct resource v2m_pcie_i2c_resource = {
	.start	= V2M_SERIAL_BUS_PCI,
	.end	= V2M_SERIAL_BUS_PCI + SZ_4K - 1,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device v2m_pcie_i2c_device = {
	.name		= "versatile-i2c",
	.id		= 0,
	.num_resources	= 1,
	.resource	= &v2m_pcie_i2c_resource,
};

static struct resource v2m_ddc_i2c_resource = {
	.start	= V2M_SERIAL_BUS_DVI,
	.end	= V2M_SERIAL_BUS_DVI + SZ_4K - 1,
	.flags	= IORESOURCE_MEM,
};

static struct platform_device v2m_ddc_i2c_device = {
	.name		= "versatile-i2c",
	.id		= 1,
	.num_resources	= 1,
	.resource	= &v2m_ddc_i2c_resource,
};

static struct resource v2m_eth_resources[] = {
	{
		.start	= V2M_LAN9118,
		.end	= V2M_LAN9118 + SZ_64K - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_V2M_LAN9118,
		.end	= IRQ_V2M_LAN9118,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct smsc911x_platform_config v2m_eth_config = {
	.flags		= SMSC911X_USE_32BIT,
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
	.phy_interface	= PHY_INTERFACE_MODE_MII,
};

static struct platform_device v2m_eth_device = {
	.name		= "smsc911x",
	.id		= -1,
	.resource	= v2m_eth_resources,
	.num_resources	= ARRAY_SIZE(v2m_eth_resources),
	.dev.platform_data = &v2m_eth_config,
};

static struct regulator_consumer_supply v2m_eth_supplies[] = {
	REGULATOR_SUPPLY("vddvario", "smsc911x"),
	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
};

static struct resource v2m_usb_resources[] = {
	{
		.start	= V2M_ISP1761,
		.end	= V2M_ISP1761 + SZ_128K - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= IRQ_V2M_ISP1761,
		.end	= IRQ_V2M_ISP1761,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct isp1760_platform_data v2m_usb_config = {
	.is_isp1761		= true,
	.bus_width_16		= false,
	.port1_otg		= true,
	.analog_oc		= false,
	.dack_polarity_high	= false,
	.dreq_polarity_high	= false,
};

static struct platform_device v2m_usb_device = {
	.name		= "isp1760",
	.id		= -1,
	.resource	= v2m_usb_resources,
	.num_resources	= ARRAY_SIZE(v2m_usb_resources),
	.dev.platform_data = &v2m_usb_config,
};

static struct physmap_flash_data v2m_flash_data = {
	.width		= 4,
};

static struct resource v2m_flash_resources[] = {
	{
		.start	= V2M_NOR0,
		.end	= V2M_NOR0 + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= V2M_NOR1,
		.end	= V2M_NOR1 + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device v2m_flash_device = {
	.name		= "physmap-flash",
	.id		= -1,
	.resource	= v2m_flash_resources,
	.num_resources	= ARRAY_SIZE(v2m_flash_resources),
	.dev.platform_data = &v2m_flash_data,
};

static struct pata_platform_info v2m_pata_data = {
	.ioport_shift	= 2,
};

static struct resource v2m_pata_resources[] = {
	{
		.start	= V2M_CF,
		.end	= V2M_CF + 0xff,
		.flags	= IORESOURCE_MEM,
	}, {
		.start	= V2M_CF + 0x100,
		.end	= V2M_CF + SZ_4K - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device v2m_cf_device = {
	.name		= "pata_platform",
	.id		= -1,
	.resource	= v2m_pata_resources,
	.num_resources	= ARRAY_SIZE(v2m_pata_resources),
	.dev.platform_data = &v2m_pata_data,
};

static struct mmci_platform_data v2m_mmci_data = {
	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
	.gpio_wp	= VEXPRESS_GPIO_MMC_WPROT,
	.gpio_cd	= VEXPRESS_GPIO_MMC_CARDIN,
};

static struct resource v2m_sysreg_resources[] = {
	{
		.start	= V2M_SYSREGS,
		.end	= V2M_SYSREGS + 0xfff,
		.flags	= IORESOURCE_MEM,
	},
};

static struct platform_device v2m_sysreg_device = {
	.name		= "vexpress-sysreg",
	.id		= -1,
	.resource	= v2m_sysreg_resources,
	.num_resources	= ARRAY_SIZE(v2m_sysreg_resources),
};

static struct platform_device v2m_muxfpga_device = {
	.name		= "vexpress-muxfpga",
	.id		= 0,
	.num_resources	= 1,
	.resource	= (struct resource []) {
		VEXPRESS_RES_FUNC(0, 7),
	}
};

static struct platform_device v2m_shutdown_device = {
	.name		= "vexpress-shutdown",
	.id		= 0,
	.num_resources	= 1,
	.resource	= (struct resource []) {
		VEXPRESS_RES_FUNC(0, 8),
	}
};

static struct platform_device v2m_reboot_device = {
	.name		= "vexpress-reboot",
	.id		= 0,
	.num_resources	= 1,
	.resource	= (struct resource []) {
		VEXPRESS_RES_FUNC(0, 9),
	}
};

static struct platform_device v2m_dvimode_device = {
	.name		= "vexpress-dvimode",
	.id		= 0,
	.num_resources	= 1,
	.resource	= (struct resource []) {
		VEXPRESS_RES_FUNC(0, 11),
	}
};

static AMBA_APB_DEVICE(aaci,  "mb:aaci",  0, V2M_AACI, IRQ_V2M_AACI, NULL);
static AMBA_APB_DEVICE(mmci,  "mb:mmci",  0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data);
static AMBA_APB_DEVICE(kmi0,  "mb:kmi0",  0, V2M_KMI0, IRQ_V2M_KMI0, NULL);
static AMBA_APB_DEVICE(kmi1,  "mb:kmi1",  0, V2M_KMI1, IRQ_V2M_KMI1, NULL);
static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL);
static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL);
static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL);
static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL);
static AMBA_APB_DEVICE(wdt,   "mb:wdt",   0, V2M_WDT, IRQ_V2M_WDT, NULL);
static AMBA_APB_DEVICE(rtc,   "mb:rtc",   0, V2M_RTC, IRQ_V2M_RTC, NULL);

static struct amba_device *v2m_amba_devs[] __initdata = {
	&aaci_device,
	&mmci_device,
	&kmi0_device,
	&kmi1_device,
	&uart0_device,
	&uart1_device,
	&uart2_device,
	&uart3_device,
	&wdt_device,
	&rtc_device,
};

static void __init v2m_timer_init(void)
{
	vexpress_clk_init(ioremap(V2M_SYSCTL, SZ_4K));
	v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
}

static void __init v2m_init_early(void)
{
	if (ct_desc->init_early)
		ct_desc->init_early();
	versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000);
}

struct ct_desc *ct_desc;

static struct ct_desc *ct_descs[] __initdata = {
#ifdef CONFIG_ARCH_VEXPRESS_CA9X4
	&ct_ca9x4_desc,
#endif
};

static void __init v2m_populate_ct_desc(void)
{
	int i;
	u32 current_tile_id;

	ct_desc = NULL;
	current_tile_id = vexpress_get_procid(VEXPRESS_SITE_MASTER)
				& V2M_CT_ID_MASK;

	for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
		if (ct_descs[i]->id == current_tile_id)
			ct_desc = ct_descs[i];

	if (!ct_desc)
		panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
		      "You may need a device tree blob or a different kernel to boot on this board.\n",
		      current_tile_id);
}

static void __init v2m_map_io(void)
{
	iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
	vexpress_sysreg_early_init(ioremap(V2M_SYSREGS, SZ_4K));
	v2m_populate_ct_desc();
	ct_desc->map_io();
}

static void __init v2m_init_irq(void)
{
	ct_desc->init_irq();
}

static void __init v2m_init(void)
{
	int i;

	regulator_register_fixed(0, v2m_eth_supplies,
			ARRAY_SIZE(v2m_eth_supplies));

	platform_device_register(&v2m_muxfpga_device);
	platform_device_register(&v2m_shutdown_device);
	platform_device_register(&v2m_reboot_device);
	platform_device_register(&v2m_dvimode_device);

	platform_device_register(&v2m_sysreg_device);
	platform_device_register(&v2m_pcie_i2c_device);
	platform_device_register(&v2m_ddc_i2c_device);
	platform_device_register(&v2m_flash_device);
	platform_device_register(&v2m_cf_device);
	platform_device_register(&v2m_eth_device);
	platform_device_register(&v2m_usb_device);

	for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
		amba_device_register(v2m_amba_devs[i], &iomem_resource);

	ct_desc->init_tile();
}

MACHINE_START(VEXPRESS, "ARM-Versatile Express")
	.atag_offset	= 0x100,
	.smp		= smp_ops(vexpress_smp_ops),
	.map_io		= v2m_map_io,
	.init_early	= v2m_init_early,
	.init_irq	= v2m_init_irq,
	.init_time	= v2m_timer_init,
	.init_machine	= v2m_init,
MACHINE_END

static struct map_desc v2m_rs1_io_desc __initdata = {
	.virtual	= V2M_PERIPH,
	.pfn		= __phys_to_pfn(0x1c000000),
	.length		= SZ_2M,
	.type		= MT_DEVICE,
};

static int __init v2m_dt_scan_memory_map(unsigned long node, const char *uname,
		int depth, void *data)
{
	const char **map = data;

	if (strcmp(uname, "motherboard") != 0)
		return 0;

	*map = of_get_flat_dt_prop(node, "arm,v2m-memory-map", NULL);

	return 1;
}

void __init v2m_dt_map_io(void)
{
	const char *map = NULL;

	of_scan_flat_dt(v2m_dt_scan_memory_map, &map);

	if (map && strcmp(map, "rs1") == 0)
		iotable_init(&v2m_rs1_io_desc, 1);
	else
		iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));

#if defined(CONFIG_SMP)
	vexpress_dt_smp_map_io();
#endif
}

void __init v2m_dt_init_early(void)
{
	u32 dt_hbi;

	vexpress_sysreg_of_early_init();

	/* Confirm board type against DT property, if available */
	if (of_property_read_u32(of_allnodes, "arm,hbi", &dt_hbi) == 0) {
		u32 hbi = vexpress_get_hbi(VEXPRESS_SITE_MASTER);

		if (WARN_ON(dt_hbi != hbi))
			pr_warning("vexpress: DT HBI (%x) is not matching "
					"hardware (%x)!\n", dt_hbi, hbi);
	}

	versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000);
}

static const struct of_device_id v2m_dt_bus_match[] __initconst = {
	{ .compatible = "simple-bus", },
	{ .compatible = "arm,amba-bus", },
	{ .compatible = "arm,vexpress,config-bus", },
	{}
};

static void __init v2m_dt_init(void)
{
	of_platform_populate(NULL, v2m_dt_bus_match, NULL, NULL);
}

static const char * const v2m_dt_match[] __initconst = {
	"arm,vexpress",
	NULL,
};

DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
	.dt_compat	= v2m_dt_match,
	.l2c_aux_val	= 0x00400000,
	.l2c_aux_mask	= 0xfe0fffff,
	.smp		= smp_ops(vexpress_smp_ops),
	.smp_init	= smp_init_ops(vexpress_smp_init_ops),
	.map_io		= v2m_dt_map_io,
	.init_early	= v2m_dt_init_early,
	.init_machine	= v2m_dt_init,
MACHINE_END