1/*
2 *  linux/arch/arm/mach-realview/realview_eb.c
3 *
4 *  Copyright (C) 2004 ARM Limited
5 *  Copyright (C) 2000 Deep Blue Solutions Ltd
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 */
21
22#include <linux/init.h>
23#include <linux/platform_device.h>
24#include <linux/device.h>
25#include <linux/amba/bus.h>
26#include <linux/amba/pl061.h>
27#include <linux/amba/mmci.h>
28#include <linux/amba/pl022.h>
29#include <linux/io.h>
30
31#include <mach/hardware.h>
32#include <asm/irq.h>
33#include <asm/leds.h>
34#include <asm/mach-types.h>
35#include <asm/pmu.h>
36#include <asm/pgtable.h>
37#include <asm/hardware/gic.h>
38#include <asm/hardware/cache-l2x0.h>
39#include <asm/smp_twd.h>
40
41#include <asm/mach/arch.h>
42#include <asm/mach/map.h>
43#include <asm/mach/time.h>
44
45#include <mach/board-eb.h>
46#include <mach/irqs.h>
47
48#include "core.h"
49
50static struct map_desc realview_eb_io_desc[] __initdata = {
51	{
52		.virtual	= IO_ADDRESS(REALVIEW_SYS_BASE),
53		.pfn		= __phys_to_pfn(REALVIEW_SYS_BASE),
54		.length		= SZ_4K,
55		.type		= MT_DEVICE,
56	}, {
57		.virtual	= IO_ADDRESS(REALVIEW_EB_GIC_CPU_BASE),
58		.pfn		= __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
59		.length		= SZ_4K,
60		.type		= MT_DEVICE,
61	}, {
62		.virtual	= IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
63		.pfn		= __phys_to_pfn(REALVIEW_EB_GIC_DIST_BASE),
64		.length		= SZ_4K,
65		.type		= MT_DEVICE,
66	}, {
67		.virtual	= IO_ADDRESS(REALVIEW_SCTL_BASE),
68		.pfn		= __phys_to_pfn(REALVIEW_SCTL_BASE),
69		.length		= SZ_4K,
70		.type		= MT_DEVICE,
71	}, {
72		.virtual	= IO_ADDRESS(REALVIEW_EB_TIMER0_1_BASE),
73		.pfn		= __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
74		.length		= SZ_4K,
75		.type		= MT_DEVICE,
76	}, {
77		.virtual	= IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
78		.pfn		= __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
79		.length		= SZ_4K,
80		.type		= MT_DEVICE,
81	},
82#ifdef CONFIG_DEBUG_LL
83	{
84		.virtual	= IO_ADDRESS(REALVIEW_EB_UART0_BASE),
85		.pfn		= __phys_to_pfn(REALVIEW_EB_UART0_BASE),
86		.length		= SZ_4K,
87		.type		= MT_DEVICE,
88	}
89#endif
90};
91
92static struct map_desc realview_eb11mp_io_desc[] __initdata = {
93	{
94		.virtual	= IO_ADDRESS(REALVIEW_EB11MP_PRIV_MEM_BASE),
95		.pfn		= __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE),
96		.length		= REALVIEW_EB11MP_PRIV_MEM_SIZE,
97		.type		= MT_DEVICE,
98	}, {
99		.virtual	= IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
100		.pfn		= __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
101		.length		= SZ_8K,
102		.type		= MT_DEVICE,
103	}
104};
105
106static void __init realview_eb_map_io(void)
107{
108	iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
109	if (core_tile_eb11mp() || core_tile_a9mp())
110		iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
111}
112
113static struct pl061_platform_data gpio0_plat_data = {
114	.gpio_base	= 0,
115};
116
117static struct pl061_platform_data gpio1_plat_data = {
118	.gpio_base	= 8,
119};
120
121static struct pl061_platform_data gpio2_plat_data = {
122	.gpio_base	= 16,
123};
124
125static struct pl022_ssp_controller ssp0_plat_data = {
126	.bus_id = 0,
127	.enable_dma = 0,
128	.num_chipselect = 1,
129};
130
131/*
132 * RealView EB AMBA devices
133 */
134
135/*
136 * These devices are connected via the core APB bridge
137 */
138#define GPIO2_IRQ	{ IRQ_EB_GPIO2 }
139#define GPIO3_IRQ	{ IRQ_EB_GPIO3 }
140
141#define AACI_IRQ	{ IRQ_EB_AACI }
142#define MMCI0_IRQ	{ IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
143#define KMI0_IRQ	{ IRQ_EB_KMI0 }
144#define KMI1_IRQ	{ IRQ_EB_KMI1 }
145
146/*
147 * These devices are connected directly to the multi-layer AHB switch
148 */
149#define EB_SMC_IRQ	{ }
150#define MPMC_IRQ	{ }
151#define EB_CLCD_IRQ	{ IRQ_EB_CLCD }
152#define DMAC_IRQ	{ IRQ_EB_DMA }
153
154/*
155 * These devices are connected via the core APB bridge
156 */
157#define SCTL_IRQ	{ }
158#define EB_WATCHDOG_IRQ	{ IRQ_EB_WDOG }
159#define EB_GPIO0_IRQ	{ IRQ_EB_GPIO0 }
160#define GPIO1_IRQ	{ IRQ_EB_GPIO1 }
161#define EB_RTC_IRQ	{ IRQ_EB_RTC }
162
163/*
164 * These devices are connected via the DMA APB bridge
165 */
166#define SCI_IRQ		{ IRQ_EB_SCI }
167#define EB_UART0_IRQ	{ IRQ_EB_UART0 }
168#define EB_UART1_IRQ	{ IRQ_EB_UART1 }
169#define EB_UART2_IRQ	{ IRQ_EB_UART2 }
170#define EB_UART3_IRQ	{ IRQ_EB_UART3 }
171#define EB_SSP_IRQ	{ IRQ_EB_SSP }
172
173/* FPGA Primecells */
174APB_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
175APB_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
176APB_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
177APB_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
178APB_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
179
180/* DevChip Primecells */
181AHB_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
182AHB_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
183AHB_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
184AHB_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
185APB_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
186APB_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
187APB_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
188APB_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
189APB_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
190APB_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
191APB_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
192APB_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
193APB_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
194APB_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);
195
196static struct amba_device *amba_devs[] __initdata = {
197	&dmac_device,
198	&uart0_device,
199	&uart1_device,
200	&uart2_device,
201	&uart3_device,
202	&smc_device,
203	&clcd_device,
204	&sctl_device,
205	&wdog_device,
206	&gpio0_device,
207	&gpio1_device,
208	&gpio2_device,
209	&rtc_device,
210	&sci0_device,
211	&ssp0_device,
212	&aaci_device,
213	&mmc0_device,
214	&kmi0_device,
215	&kmi1_device,
216};
217
218/*
219 * RealView EB platform devices
220 */
221static struct resource realview_eb_flash_resource = {
222	.start			= REALVIEW_EB_FLASH_BASE,
223	.end			= REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
224	.flags			= IORESOURCE_MEM,
225};
226
227static struct resource realview_eb_eth_resources[] = {
228	[0] = {
229		.start		= REALVIEW_EB_ETH_BASE,
230		.end		= REALVIEW_EB_ETH_BASE + SZ_64K - 1,
231		.flags		= IORESOURCE_MEM,
232	},
233	[1] = {
234		.start		= IRQ_EB_ETH,
235		.end		= IRQ_EB_ETH,
236		.flags		= IORESOURCE_IRQ,
237	},
238};
239
240/*
241 * Detect and register the correct Ethernet device. RealView/EB rev D
242 * platforms use the newer SMSC LAN9118 Ethernet chip
243 */
244static int eth_device_register(void)
245{
246	void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
247	const char *name = NULL;
248	u32 idrev;
249
250	if (!eth_addr)
251		return -ENOMEM;
252
253	idrev = readl(eth_addr + 0x50);
254	if ((idrev & 0xFFFF0000) != 0x01180000)
255		/* SMSC LAN9118 not present, use LAN91C111 instead */
256		name = "smc91x";
257
258	iounmap(eth_addr);
259	return realview_eth_register(name, realview_eb_eth_resources);
260}
261
262static struct resource realview_eb_isp1761_resources[] = {
263	[0] = {
264		.start		= REALVIEW_EB_USB_BASE,
265		.end		= REALVIEW_EB_USB_BASE + SZ_128K - 1,
266		.flags		= IORESOURCE_MEM,
267	},
268	[1] = {
269		.start		= IRQ_EB_USB,
270		.end		= IRQ_EB_USB,
271		.flags		= IORESOURCE_IRQ,
272	},
273};
274
275static struct resource pmu_resources[] = {
276	[0] = {
277		.start		= IRQ_EB11MP_PMU_CPU0,
278		.end		= IRQ_EB11MP_PMU_CPU0,
279		.flags		= IORESOURCE_IRQ,
280	},
281	[1] = {
282		.start		= IRQ_EB11MP_PMU_CPU1,
283		.end		= IRQ_EB11MP_PMU_CPU1,
284		.flags		= IORESOURCE_IRQ,
285	},
286	[2] = {
287		.start		= IRQ_EB11MP_PMU_CPU2,
288		.end		= IRQ_EB11MP_PMU_CPU2,
289		.flags		= IORESOURCE_IRQ,
290	},
291	[3] = {
292		.start		= IRQ_EB11MP_PMU_CPU3,
293		.end		= IRQ_EB11MP_PMU_CPU3,
294		.flags		= IORESOURCE_IRQ,
295	},
296};
297
298static struct platform_device pmu_device = {
299	.name			= "arm-pmu",
300	.id			= ARM_PMU_DEVICE_CPU,
301	.num_resources		= ARRAY_SIZE(pmu_resources),
302	.resource		= pmu_resources,
303};
304
305static struct resource char_lcd_resources[] = {
306	{
307		.start = REALVIEW_CHAR_LCD_BASE,
308		.end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
309		.flags = IORESOURCE_MEM,
310	},
311	{
312		.start	= IRQ_EB_CHARLCD,
313		.end	= IRQ_EB_CHARLCD,
314		.flags	= IORESOURCE_IRQ,
315	},
316};
317
318static struct platform_device char_lcd_device = {
319	.name		=	"arm-charlcd",
320	.id		=	-1,
321	.num_resources	=	ARRAY_SIZE(char_lcd_resources),
322	.resource	=	char_lcd_resources,
323};
324
325static void __init gic_init_irq(void)
326{
327	if (core_tile_eb11mp() || core_tile_a9mp()) {
328		unsigned int pldctrl;
329
330		/* new irq mode */
331		writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
332		pldctrl = readl(__io_address(REALVIEW_SYS_BASE)	+ REALVIEW_EB11MP_SYS_PLD_CTRL1);
333		pldctrl |= 0x00800000;
334		writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
335		writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
336
337		/* core tile GIC, primary */
338		gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
339			 __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
340
341#ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
342		/* board GIC, secondary */
343		gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
344			 __io_address(REALVIEW_EB_GIC_CPU_BASE));
345		gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
346#endif
347	} else {
348		/* board GIC, primary */
349		gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
350			 __io_address(REALVIEW_EB_GIC_CPU_BASE));
351	}
352}
353
354/*
355 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
356 */
357static void realview_eb11mp_fixup(void)
358{
359	/* AMBA devices */
360	dmac_device.irq[0]	= IRQ_EB11MP_DMA;
361	uart0_device.irq[0]	= IRQ_EB11MP_UART0;
362	uart1_device.irq[0]	= IRQ_EB11MP_UART1;
363	uart2_device.irq[0]	= IRQ_EB11MP_UART2;
364	uart3_device.irq[0]	= IRQ_EB11MP_UART3;
365	clcd_device.irq[0]	= IRQ_EB11MP_CLCD;
366	wdog_device.irq[0]	= IRQ_EB11MP_WDOG;
367	gpio0_device.irq[0]	= IRQ_EB11MP_GPIO0;
368	gpio1_device.irq[0]	= IRQ_EB11MP_GPIO1;
369	gpio2_device.irq[0]	= IRQ_EB11MP_GPIO2;
370	rtc_device.irq[0]	= IRQ_EB11MP_RTC;
371	sci0_device.irq[0]	= IRQ_EB11MP_SCI;
372	ssp0_device.irq[0]	= IRQ_EB11MP_SSP;
373	aaci_device.irq[0]	= IRQ_EB11MP_AACI;
374	mmc0_device.irq[0]	= IRQ_EB11MP_MMCI0A;
375	mmc0_device.irq[1]	= IRQ_EB11MP_MMCI0B;
376	kmi0_device.irq[0]	= IRQ_EB11MP_KMI0;
377	kmi1_device.irq[0]	= IRQ_EB11MP_KMI1;
378
379	/* platform devices */
380	realview_eb_eth_resources[1].start	= IRQ_EB11MP_ETH;
381	realview_eb_eth_resources[1].end	= IRQ_EB11MP_ETH;
382	realview_eb_isp1761_resources[1].start	= IRQ_EB11MP_USB;
383	realview_eb_isp1761_resources[1].end	= IRQ_EB11MP_USB;
384}
385
386#ifdef CONFIG_HAVE_ARM_TWD
387static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
388			      REALVIEW_EB11MP_TWD_BASE,
389			      IRQ_LOCALTIMER);
390
391static void __init realview_eb_twd_init(void)
392{
393	if (core_tile_eb11mp() || core_tile_a9mp()) {
394		int err = twd_local_timer_register(&twd_local_timer);
395		if (err)
396			pr_err("twd_local_timer_register failed %d\n", err);
397	}
398}
399#else
400#define realview_eb_twd_init()	do { } while(0)
401#endif
402
403static void __init realview_eb_timer_init(void)
404{
405	unsigned int timer_irq;
406
407	timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
408	timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
409	timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
410	timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
411
412	if (core_tile_eb11mp() || core_tile_a9mp())
413		timer_irq = IRQ_EB11MP_TIMER0_1;
414	else
415		timer_irq = IRQ_EB_TIMER0_1;
416
417	realview_timer_init(timer_irq);
418	realview_eb_twd_init();
419}
420
421static struct sys_timer realview_eb_timer = {
422	.init		= realview_eb_timer_init,
423};
424
425static void realview_eb_restart(char mode, const char *cmd)
426{
427	void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
428	void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
429
430	/*
431	 * To reset, we hit the on-board reset register
432	 * in the system FPGA
433	 */
434	__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
435	if (core_tile_eb11mp())
436		__raw_writel(0x0008, reset_ctrl);
437	dsb();
438}
439
440static void __init realview_eb_init(void)
441{
442	int i;
443
444	if (core_tile_eb11mp() || core_tile_a9mp()) {
445		realview_eb11mp_fixup();
446
447#ifdef CONFIG_CACHE_L2X0
448		/* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
449		 * Bits:  .... ...0 0111 1001 0000 .... .... .... */
450		l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
451#endif
452		platform_device_register(&pmu_device);
453	}
454
455	realview_flash_register(&realview_eb_flash_resource, 1);
456	platform_device_register(&realview_i2c_device);
457	platform_device_register(&char_lcd_device);
458	eth_device_register();
459	realview_usb_register(realview_eb_isp1761_resources);
460
461	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
462		struct amba_device *d = amba_devs[i];
463		amba_device_register(d, &iomem_resource);
464	}
465
466#ifdef CONFIG_LEDS
467	leds_event = realview_leds_event;
468#endif
469}
470
471MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
472	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
473	.atag_offset	= 0x100,
474	.fixup		= realview_fixup,
475	.map_io		= realview_eb_map_io,
476	.init_early	= realview_init_early,
477	.init_irq	= gic_init_irq,
478	.timer		= &realview_eb_timer,
479	.handle_irq	= gic_handle_irq,
480	.init_machine	= realview_eb_init,
481#ifdef CONFIG_ZONE_DMA
482	.dma_zone_size	= SZ_256M,
483#endif
484	.restart	= realview_eb_restart,
485MACHINE_END
486