aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-realview/realview_eb.c
blob: a33e33b76733100ccf7872dd1f7d3929c39359ab (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
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
/*
 *  linux/arch/arm/mach-realview/realview_eb.c
 *
 *  Copyright (C) 2004 ARM Limited
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
#include <linux/amba/mmci.h>
#include <linux/amba/pl022.h>
#include <linux/io.h>
#include <linux/platform_data/clk-realview.h>

#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/leds.h>
#include <asm/mach-types.h>
#include <asm/pmu.h>
#include <asm/pgtable.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/smp_twd.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>

#include <mach/board-eb.h>
#include <mach/irqs.h>

#include "core.h"

static struct map_desc realview_eb_io_desc[] __initdata = {
	{
		.virtual	= IO_ADDRESS(REALVIEW_SYS_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_SYS_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_SCTL_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_SCTL_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	},
#ifdef CONFIG_DEBUG_LL
	{
		.virtual	= IO_ADDRESS(REALVIEW_EB_UART0_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB_UART0_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}
#endif
};

static struct map_desc realview_eb11mp_io_desc[] __initdata = {
	{
		.virtual	= IO_ADDRESS(REALVIEW_EB11MP_PRIV_MEM_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE),
		.length		= REALVIEW_EB11MP_PRIV_MEM_SIZE,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
		.length		= SZ_8K,
		.type		= MT_DEVICE,
	}
};

static void __init realview_eb_map_io(void)
{
	iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
	if (core_tile_eb11mp() || core_tile_a9mp())
		iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
}

static struct pl061_platform_data gpio0_plat_data = {
	.gpio_base	= 0,
};

static struct pl061_platform_data gpio1_plat_data = {
	.gpio_base	= 8,
};

static struct pl061_platform_data gpio2_plat_data = {
	.gpio_base	= 16,
};

static struct pl022_ssp_controller ssp0_plat_data = {
	.bus_id = 0,
	.enable_dma = 0,
	.num_chipselect = 1,
};

/*
 * RealView EB AMBA devices
 */

/*
 * These devices are connected via the core APB bridge
 */
#define GPIO2_IRQ	{ IRQ_EB_GPIO2 }
#define GPIO3_IRQ	{ IRQ_EB_GPIO3 }

#define AACI_IRQ	{ IRQ_EB_AACI }
#define MMCI0_IRQ	{ IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
#define KMI0_IRQ	{ IRQ_EB_KMI0 }
#define KMI1_IRQ	{ IRQ_EB_KMI1 }

/*
 * These devices are connected directly to the multi-layer AHB switch
 */
#define EB_SMC_IRQ	{ }
#define MPMC_IRQ	{ }
#define EB_CLCD_IRQ	{ IRQ_EB_CLCD }
#define DMAC_IRQ	{ IRQ_EB_DMA }

/*
 * These devices are connected via the core APB bridge
 */
#define SCTL_IRQ	{ }
#define EB_WATCHDOG_IRQ	{ IRQ_EB_WDOG }
#define EB_GPIO0_IRQ	{ IRQ_EB_GPIO0 }
#define GPIO1_IRQ	{ IRQ_EB_GPIO1 }
#define EB_RTC_IRQ	{ IRQ_EB_RTC }

/*
 * These devices are connected via the DMA APB bridge
 */
#define SCI_IRQ		{ IRQ_EB_SCI }
#define EB_UART0_IRQ	{ IRQ_EB_UART0 }
#define EB_UART1_IRQ	{ IRQ_EB_UART1 }
#define EB_UART2_IRQ	{ IRQ_EB_UART2 }
#define EB_UART3_IRQ	{ IRQ_EB_UART3 }
#define EB_SSP_IRQ	{ IRQ_EB_SSP }

/* FPGA Primecells */
APB_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
APB_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
APB_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
APB_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
APB_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);

/* DevChip Primecells */
AHB_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
AHB_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
AHB_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
AHB_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
APB_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
APB_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
APB_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
APB_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
APB_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
APB_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
APB_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
APB_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
APB_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
APB_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);

static struct amba_device *amba_devs[] __initdata = {
	&dmac_device,
	&uart0_device,
	&uart1_device,
	&uart2_device,
	&uart3_device,
	&smc_device,
	&clcd_device,
	&sctl_device,
	&wdog_device,
	&gpio0_device,
	&gpio1_device,
	&gpio2_device,
	&rtc_device,
	&sci0_device,
	&ssp0_device,
	&aaci_device,
	&mmc0_device,
	&kmi0_device,
	&kmi1_device,
};

/*
 * RealView EB platform devices
 */
static struct resource realview_eb_flash_resource = {
	.start			= REALVIEW_EB_FLASH_BASE,
	.end			= REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
	.flags			= IORESOURCE_MEM,
};

static struct resource realview_eb_eth_resources[] = {
	[0] = {
		.start		= REALVIEW_EB_ETH_BASE,
		.end		= REALVIEW_EB_ETH_BASE + SZ_64K - 1,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_EB_ETH,
		.end		= IRQ_EB_ETH,
		.flags		= IORESOURCE_IRQ,
	},
};

/*
 * Detect and register the correct Ethernet device. RealView/EB rev D
 * platforms use the newer SMSC LAN9118 Ethernet chip
 */
static int eth_device_register(void)
{
	void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
	const char *name = NULL;
	u32 idrev;

	if (!eth_addr)
		return -ENOMEM;

	idrev = readl(eth_addr + 0x50);
	if ((idrev & 0xFFFF0000) != 0x01180000)
		/* SMSC LAN9118 not present, use LAN91C111 instead */
		name = "smc91x";

	iounmap(eth_addr);
	return realview_eth_register(name, realview_eb_eth_resources);
}

static struct resource realview_eb_isp1761_resources[] = {
	[0] = {
		.start		= REALVIEW_EB_USB_BASE,
		.end		= REALVIEW_EB_USB_BASE + SZ_128K - 1,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_EB_USB,
		.end		= IRQ_EB_USB,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct resource pmu_resources[] = {
	[0] = {
		.start		= IRQ_EB11MP_PMU_CPU0,
		.end		= IRQ_EB11MP_PMU_CPU0,
		.flags		= IORESOURCE_IRQ,
	},
	[1] = {
		.start		= IRQ_EB11MP_PMU_CPU1,
		.end		= IRQ_EB11MP_PMU_CPU1,
		.flags		= IORESOURCE_IRQ,
	},
	[2] = {
		.start		= IRQ_EB11MP_PMU_CPU2,
		.end		= IRQ_EB11MP_PMU_CPU2,
		.flags		= IORESOURCE_IRQ,
	},
	[3] = {
		.start		= IRQ_EB11MP_PMU_CPU3,
		.end		= IRQ_EB11MP_PMU_CPU3,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device pmu_device = {
	.name			= "arm-pmu",
	.id			= ARM_PMU_DEVICE_CPU,
	.num_resources		= ARRAY_SIZE(pmu_resources),
	.resource		= pmu_resources,
};

static struct resource char_lcd_resources[] = {
	{
		.start = REALVIEW_CHAR_LCD_BASE,
		.end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
		.flags = IORESOURCE_MEM,
	},
	{
		.start	= IRQ_EB_CHARLCD,
		.end	= IRQ_EB_CHARLCD,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device char_lcd_device = {
	.name		=	"arm-charlcd",
	.id		=	-1,
	.num_resources	=	ARRAY_SIZE(char_lcd_resources),
	.resource	=	char_lcd_resources,
};

static void __init gic_init_irq(void)
{
	if (core_tile_eb11mp() || core_tile_a9mp()) {
		unsigned int pldctrl;

		/* new irq mode */
		writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
		pldctrl = readl(__io_address(REALVIEW_SYS_BASE)	+ REALVIEW_EB11MP_SYS_PLD_CTRL1);
		pldctrl |= 0x00800000;
		writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
		writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));

		/* core tile GIC, primary */
		gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
			 __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));

#ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
		/* board GIC, secondary */
		gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
			 __io_address(REALVIEW_EB_GIC_CPU_BASE));
		gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
#endif
	} else {
		/* board GIC, primary */
		gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
			 __io_address(REALVIEW_EB_GIC_CPU_BASE));
	}
}

/*
 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
 */
static void realview_eb11mp_fixup(void)
{
	/* AMBA devices */
	dmac_device.irq[0]	= IRQ_EB11MP_DMA;
	uart0_device.irq[0]	= IRQ_EB11MP_UART0;
	uart1_device.irq[0]	= IRQ_EB11MP_UART1;
	uart2_device.irq[0]	= IRQ_EB11MP_UART2;
	uart3_device.irq[0]	= IRQ_EB11MP_UART3;
	clcd_device.irq[0]	= IRQ_EB11MP_CLCD;
	wdog_device.irq[0]	= IRQ_EB11MP_WDOG;
	gpio0_device.irq[0]	= IRQ_EB11MP_GPIO0;
	gpio1_device.irq[0]	= IRQ_EB11MP_GPIO1;
	gpio2_device.irq[0]	= IRQ_EB11MP_GPIO2;
	rtc_device.irq[0]	= IRQ_EB11MP_RTC;
	sci0_device.irq[0]	= IRQ_EB11MP_SCI;
	ssp0_device.irq[0]	= IRQ_EB11MP_SSP;
	aaci_device.irq[0]	= IRQ_EB11MP_AACI;
	mmc0_device.irq[0]	= IRQ_EB11MP_MMCI0A;
	mmc0_device.irq[1]	= IRQ_EB11MP_MMCI0B;
	kmi0_device.irq[0]	= IRQ_EB11MP_KMI0;
	kmi1_device.irq[0]	= IRQ_EB11MP_KMI1;

	/* platform devices */
	realview_eb_eth_resources[1].start	= IRQ_EB11MP_ETH;
	realview_eb_eth_resources[1].end	= IRQ_EB11MP_ETH;
	realview_eb_isp1761_resources[1].start	= IRQ_EB11MP_USB;
	realview_eb_isp1761_resources[1].end	= IRQ_EB11MP_USB;
}

#ifdef CONFIG_HAVE_ARM_TWD
static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
			      REALVIEW_EB11MP_TWD_BASE,
			      IRQ_LOCALTIMER);

static void __init realview_eb_twd_init(void)
{
	if (core_tile_eb11mp() || core_tile_a9mp()) {
		int err = twd_local_timer_register(&twd_local_timer);
		if (err)
			pr_err("twd_local_timer_register failed %d\n", err);
	}
}
#else
#define realview_eb_twd_init()	do { } while(0)
#endif

static void __init realview_eb_timer_init(void)
{
	unsigned int timer_irq;

	timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
	timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
	timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
	timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;

	if (core_tile_eb11mp() || core_tile_a9mp())
		timer_irq = IRQ_EB11MP_TIMER0_1;
	else
		timer_irq = IRQ_EB_TIMER0_1;

	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
	realview_timer_init(timer_irq);
	realview_eb_twd_init();
}

static struct sys_timer realview_eb_timer = {
	.init		= realview_eb_timer_init,
};

static void realview_eb_restart(char mode, const char *cmd)
{
	void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
	void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);

	/*
	 * To reset, we hit the on-board reset register
	 * in the system FPGA
	 */
	__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
	if (core_tile_eb11mp())
		__raw_writel(0x0008, reset_ctrl);
	dsb();
}

static void __init realview_eb_init(void)
{
	int i;

	if (core_tile_eb11mp() || core_tile_a9mp()) {
		realview_eb11mp_fixup();

#ifdef CONFIG_CACHE_L2X0
		/* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
		 * Bits:  .... ...0 0111 1001 0000 .... .... .... */
		l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
#endif
		platform_device_register(&pmu_device);
	}

	realview_flash_register(&realview_eb_flash_resource, 1);
	platform_device_register(&realview_i2c_device);
	platform_device_register(&char_lcd_device);
	eth_device_register();
	realview_usb_register(realview_eb_isp1761_resources);

	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
		struct amba_device *d = amba_devs[i];
		amba_device_register(d, &iomem_resource);
	}

#ifdef CONFIG_LEDS
	leds_event = realview_leds_event;
#endif
}

MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
	.atag_offset	= 0x100,
	.fixup		= realview_fixup,
	.map_io		= realview_eb_map_io,
	.init_early	= realview_init_early,
	.init_irq	= gic_init_irq,
	.timer		= &realview_eb_timer,
	.handle_irq	= gic_handle_irq,
	.init_machine	= realview_eb_init,
#ifdef CONFIG_ZONE_DMA
	.dma_zone_size	= SZ_256M,
#endif
	.restart	= realview_eb_restart,
MACHINE_END