summaryrefslogtreecommitdiffstats
path: root/kernel/arch/arm/mach-realview/realview_pb1176.c
blob: ce92c182349468244dd02c02fc3abd5e1e93ea6d (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
/*
 *  linux/arch/arm/mach-realview/realview_pb1176.c
 *
 *  Copyright (C) 2008 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/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/platform_data/clk-realview.h>
#include <linux/reboot.h>
#include <linux/memblock.h>

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

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

#include <mach/board-pb1176.h>
#include <mach/irqs.h>

#include "core.h"

static struct map_desc realview_pb1176_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_PB1176_GIC_CPU_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_DC1176_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_PB1176_TIMER0_1_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	}, {
		.virtual	= IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
		.length		= SZ_8K,
		.type		= MT_DEVICE,
	},
#ifdef CONFIG_DEBUG_LL
	{
		.virtual	= IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
		.pfn		= __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	},
#endif
};

static void __init realview_pb1176_map_io(void)
{
	iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_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 PB1176 AMBA devices
 */
#define GPIO2_IRQ	{ IRQ_PB1176_GPIO2 }
#define GPIO3_IRQ	{ IRQ_PB1176_GPIO3 }
#define AACI_IRQ	{ IRQ_PB1176_AACI }
#define MMCI0_IRQ	{ IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
#define KMI0_IRQ	{ IRQ_PB1176_KMI0 }
#define KMI1_IRQ	{ IRQ_PB1176_KMI1 }
#define PB1176_SMC_IRQ	{ }
#define MPMC_IRQ	{ }
#define PB1176_CLCD_IRQ	{ IRQ_DC1176_CLCD }
#define SCTL_IRQ	{ }
#define PB1176_WATCHDOG_IRQ	{ IRQ_DC1176_WATCHDOG }
#define PB1176_GPIO0_IRQ	{ IRQ_DC1176_GPIO0 }
#define GPIO1_IRQ	{ IRQ_PB1176_GPIO1 }
#define PB1176_RTC_IRQ	{ IRQ_DC1176_RTC }
#define SCI_IRQ		{ IRQ_PB1176_SCI }
#define PB1176_UART0_IRQ	{ IRQ_DC1176_UART0 }
#define PB1176_UART1_IRQ	{ IRQ_DC1176_UART1 }
#define PB1176_UART2_IRQ	{ IRQ_DC1176_UART2 }
#define PB1176_UART3_IRQ	{ IRQ_DC1176_UART3 }
#define PB1176_UART4_IRQ	{ IRQ_PB1176_UART4 }
#define PB1176_SSP_IRQ		{ IRQ_DC1176_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(uart4,	"fpga:uart4",	PB1176_UART4,	NULL);

/* DevChip Primecells */
AHB_DEVICE(smc,		"dev:smc",	PB1176_SMC,	NULL);
AHB_DEVICE(sctl,	"dev:sctl",	SCTL,		NULL);
APB_DEVICE(wdog,	"dev:wdog",	PB1176_WATCHDOG,	NULL);
APB_DEVICE(gpio0,	"dev:gpio0",	PB1176_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",	PB1176_RTC,	NULL);
APB_DEVICE(sci0,	"dev:sci0",	SCI,		NULL);
APB_DEVICE(uart0,	"dev:uart0",	PB1176_UART0,	NULL);
APB_DEVICE(uart1,	"dev:uart1",	PB1176_UART1,	NULL);
APB_DEVICE(uart2,	"dev:uart2",	PB1176_UART2,	NULL);
APB_DEVICE(uart3,	"dev:uart3",	PB1176_UART3,	NULL);
APB_DEVICE(ssp0,	"dev:ssp0",	PB1176_SSP,	&ssp0_plat_data);
AHB_DEVICE(clcd,	"dev:clcd",	PB1176_CLCD,	&clcd_plat_data);

static struct amba_device *amba_devs[] __initdata = {
	&uart0_device,
	&uart1_device,
	&uart2_device,
	&uart3_device,
	&uart4_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 PB1176 platform devices
 */
static struct resource realview_pb1176_flash_resources[] = {
	{
		.start		= REALVIEW_PB1176_FLASH_BASE,
		.end		= REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
		.flags		= IORESOURCE_MEM,
	},
#ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
	{
		.start		= REALVIEW_PB1176_SEC_FLASH_BASE,
		.end		= REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
		.flags		= IORESOURCE_MEM,
	},
#endif
};

static struct physmap_flash_data pb1176_rom_pdata = {
	.probe_type	= "map_rom",
	.width		= 4,
	.nr_parts	= 0,
};

static struct resource pb1176_rom_resources[] = {
	/*
	 * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
	 * The reference manual states that this is actually a pseudo-ROM
	 * programmed in NVRAM.
	 */
	{
		.start		= REALVIEW_DC1176_ROM_BASE,
		.end		= REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
		.flags		= IORESOURCE_MEM,
	}
};

static struct platform_device pb1176_rom_device = {
	.name		= "physmap-flash",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(pb1176_rom_resources),
	.resource	= pb1176_rom_resources,
	.dev = {
		.platform_data = &pb1176_rom_pdata,
	},
};

static struct resource realview_pb1176_smsc911x_resources[] = {
	[0] = {
		.start		= REALVIEW_PB1176_ETH_BASE,
		.end		= REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_PB1176_ETH,
		.end		= IRQ_PB1176_ETH,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct resource realview_pb1176_isp1761_resources[] = {
	[0] = {
		.start		= REALVIEW_PB1176_USB_BASE,
		.end		= REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
		.flags		= IORESOURCE_MEM,
	},
	[1] = {
		.start		= IRQ_PB1176_USB,
		.end		= IRQ_PB1176_USB,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct resource pmu_resource = {
	.start		= IRQ_DC1176_CORE_PMU,
	.end		= IRQ_DC1176_CORE_PMU,
	.flags		= IORESOURCE_IRQ,
};

static struct platform_device pmu_device = {
	.name			= "armv6-pmu",
	.id			= -1,
	.num_resources		= 1,
	.resource		= &pmu_resource,
};

static struct resource char_lcd_resources[] = {
	{
		.start = REALVIEW_CHAR_LCD_BASE,
		.end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
		.flags = IORESOURCE_MEM,
	},
	{
		.start	= IRQ_PB1176_CHARLCD,
		.end	= IRQ_PB1176_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)
{
	/* ARM1176 DevChip GIC, primary */
	gic_init(0, IRQ_DC1176_GIC_START,
		 __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
		 __io_address(REALVIEW_DC1176_GIC_CPU_BASE));

	/* board GIC, secondary */
	gic_init(1, IRQ_PB1176_GIC_START,
		 __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
		 __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
	gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
}

static void __init realview_pb1176_timer_init(void)
{
	timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
	timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
	timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
	timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;

	realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
	realview_timer_init(IRQ_DC1176_TIMER0);
}

static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
{
	void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
	void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
	__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
	__raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
	dsb();
}

static void realview_pb1176_fixup(struct tag *tags, char **from)
{
	/*
	 * RealView PB1176 only has 128MB of RAM mapped at 0.
	 */
	memblock_add(0, SZ_128M);
}

static void __init realview_pb1176_init(void)
{
	int i;

#ifdef CONFIG_CACHE_L2X0
	/*
	 * The PL220 needs to be manually configured as the hardware
	 * doesn't report the correct sizes.
	 * 128kB (16kB/way), 8-way associativity, event monitor and
	 * parity enabled, ignore share bit, no force write allocate
	 * Bits:  .... ...0 0111 0011 0000 .... .... ....
	 */
	l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
#endif

	realview_flash_register(realview_pb1176_flash_resources,
				ARRAY_SIZE(realview_pb1176_flash_resources));
	platform_device_register(&pb1176_rom_device);
	realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
	platform_device_register(&realview_i2c_device);
	realview_usb_register(realview_pb1176_isp1761_resources);
	platform_device_register(&pmu_device);
	platform_device_register(&char_lcd_device);
	platform_device_register(&realview_leds_device);

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

MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
	.atag_offset	= 0x100,
	.fixup		= realview_pb1176_fixup,
	.map_io		= realview_pb1176_map_io,
	.init_early	= realview_init_early,
	.init_irq	= gic_init_irq,
	.init_time	= realview_pb1176_timer_init,
	.init_machine	= realview_pb1176_init,
#ifdef CONFIG_ZONE_DMA
	.dma_zone_size	= SZ_256M,
#endif
	.restart	= realview_pb1176_restart,
MACHINE_END