1/*
2 *  linux/arch/arm/mach-realview/realview_pba8.c
3 *
4 *  Copyright (C) 2008 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#include <linux/irqchip/arm-gic.h>
31#include <linux/platform_data/clk-realview.h>
32#include <linux/reboot.h>
33
34#include <asm/irq.h>
35#include <asm/mach-types.h>
36#include <asm/pgtable.h>
37
38#include <asm/mach/arch.h>
39#include <asm/mach/map.h>
40#include <asm/mach/time.h>
41
42#include <mach/hardware.h>
43#include <mach/board-pba8.h>
44#include <mach/irqs.h>
45
46#include "core.h"
47
48static struct map_desc realview_pba8_io_desc[] __initdata = {
49	{
50		.virtual	= IO_ADDRESS(REALVIEW_SYS_BASE),
51		.pfn		= __phys_to_pfn(REALVIEW_SYS_BASE),
52		.length		= SZ_4K,
53		.type		= MT_DEVICE,
54	}, {
55		.virtual	= IO_ADDRESS(REALVIEW_PBA8_GIC_CPU_BASE),
56		.pfn		= __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
57		.length		= SZ_4K,
58		.type		= MT_DEVICE,
59	}, {
60		.virtual	= IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
61		.pfn		= __phys_to_pfn(REALVIEW_PBA8_GIC_DIST_BASE),
62		.length		= SZ_4K,
63		.type		= MT_DEVICE,
64	}, {
65		.virtual	= IO_ADDRESS(REALVIEW_SCTL_BASE),
66		.pfn		= __phys_to_pfn(REALVIEW_SCTL_BASE),
67		.length		= SZ_4K,
68		.type		= MT_DEVICE,
69	}, {
70		.virtual	= IO_ADDRESS(REALVIEW_PBA8_TIMER0_1_BASE),
71		.pfn		= __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
72		.length		= SZ_4K,
73		.type		= MT_DEVICE,
74	}, {
75		.virtual	= IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
76		.pfn		= __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
77		.length		= SZ_4K,
78		.type		= MT_DEVICE,
79	},
80#ifdef CONFIG_PCI
81	{
82		.virtual	= PCIX_UNIT_BASE,
83		.pfn		= __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
84		.length		= REALVIEW_PBA8_PCI_BASE_SIZE,
85		.type		= MT_DEVICE
86	},
87#endif
88#ifdef CONFIG_DEBUG_LL
89	{
90		.virtual	= IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
91		.pfn		= __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
92		.length		= SZ_4K,
93		.type		= MT_DEVICE,
94	},
95#endif
96};
97
98static void __init realview_pba8_map_io(void)
99{
100	iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
101}
102
103static struct pl061_platform_data gpio0_plat_data = {
104	.gpio_base	= 0,
105};
106
107static struct pl061_platform_data gpio1_plat_data = {
108	.gpio_base	= 8,
109};
110
111static struct pl061_platform_data gpio2_plat_data = {
112	.gpio_base	= 16,
113};
114
115static struct pl022_ssp_controller ssp0_plat_data = {
116	.bus_id = 0,
117	.enable_dma = 0,
118	.num_chipselect = 1,
119};
120
121/*
122 * RealView PBA8Core AMBA devices
123 */
124
125#define GPIO2_IRQ		{ IRQ_PBA8_GPIO2 }
126#define GPIO3_IRQ		{ IRQ_PBA8_GPIO3 }
127#define AACI_IRQ		{ IRQ_PBA8_AACI }
128#define MMCI0_IRQ		{ IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
129#define KMI0_IRQ		{ IRQ_PBA8_KMI0 }
130#define KMI1_IRQ		{ IRQ_PBA8_KMI1 }
131#define PBA8_SMC_IRQ		{ }
132#define MPMC_IRQ		{ }
133#define PBA8_CLCD_IRQ		{ IRQ_PBA8_CLCD }
134#define DMAC_IRQ		{ IRQ_PBA8_DMAC }
135#define SCTL_IRQ		{ }
136#define PBA8_WATCHDOG_IRQ	{ IRQ_PBA8_WATCHDOG }
137#define PBA8_GPIO0_IRQ		{ IRQ_PBA8_GPIO0 }
138#define GPIO1_IRQ		{ IRQ_PBA8_GPIO1 }
139#define PBA8_RTC_IRQ		{ IRQ_PBA8_RTC }
140#define SCI_IRQ			{ IRQ_PBA8_SCI }
141#define PBA8_UART0_IRQ		{ IRQ_PBA8_UART0 }
142#define PBA8_UART1_IRQ		{ IRQ_PBA8_UART1 }
143#define PBA8_UART2_IRQ		{ IRQ_PBA8_UART2 }
144#define PBA8_UART3_IRQ		{ IRQ_PBA8_UART3 }
145#define PBA8_SSP_IRQ		{ IRQ_PBA8_SSP }
146
147/* FPGA Primecells */
148APB_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
149APB_DEVICE(mmc0,	"fpga:mmc0",	MMCI0,		&realview_mmc0_plat_data);
150APB_DEVICE(kmi0,	"fpga:kmi0",	KMI0,		NULL);
151APB_DEVICE(kmi1,	"fpga:kmi1",	KMI1,		NULL);
152APB_DEVICE(uart3,	"fpga:uart3",	PBA8_UART3,	NULL);
153
154/* DevChip Primecells */
155AHB_DEVICE(smc,		"dev:smc",	PBA8_SMC,	NULL);
156AHB_DEVICE(sctl,	"dev:sctl",	SCTL,		NULL);
157APB_DEVICE(wdog,	"dev:wdog",	PBA8_WATCHDOG, NULL);
158APB_DEVICE(gpio0,	"dev:gpio0",	PBA8_GPIO0,	&gpio0_plat_data);
159APB_DEVICE(gpio1,	"dev:gpio1",	GPIO1,		&gpio1_plat_data);
160APB_DEVICE(gpio2,	"dev:gpio2",	GPIO2,		&gpio2_plat_data);
161APB_DEVICE(rtc,		"dev:rtc",	PBA8_RTC,	NULL);
162APB_DEVICE(sci0,	"dev:sci0",	SCI,		NULL);
163APB_DEVICE(uart0,	"dev:uart0",	PBA8_UART0,	NULL);
164APB_DEVICE(uart1,	"dev:uart1",	PBA8_UART1,	NULL);
165APB_DEVICE(uart2,	"dev:uart2",	PBA8_UART2,	NULL);
166APB_DEVICE(ssp0,	"dev:ssp0",	PBA8_SSP,	&ssp0_plat_data);
167
168/* Primecells on the NEC ISSP chip */
169AHB_DEVICE(clcd,	"issp:clcd",	PBA8_CLCD,	&clcd_plat_data);
170AHB_DEVICE(dmac,	"issp:dmac",	DMAC,		NULL);
171
172static struct amba_device *amba_devs[] __initdata = {
173	&dmac_device,
174	&uart0_device,
175	&uart1_device,
176	&uart2_device,
177	&uart3_device,
178	&smc_device,
179	&clcd_device,
180	&sctl_device,
181	&wdog_device,
182	&gpio0_device,
183	&gpio1_device,
184	&gpio2_device,
185	&rtc_device,
186	&sci0_device,
187	&ssp0_device,
188	&aaci_device,
189	&mmc0_device,
190	&kmi0_device,
191	&kmi1_device,
192};
193
194/*
195 * RealView PB-A8 platform devices
196 */
197static struct resource realview_pba8_flash_resource[] = {
198	[0] = {
199		.start		= REALVIEW_PBA8_FLASH0_BASE,
200		.end		= REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
201		.flags		= IORESOURCE_MEM,
202	},
203	[1] = {
204		.start		= REALVIEW_PBA8_FLASH1_BASE,
205		.end		= REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
206		.flags		= IORESOURCE_MEM,
207	},
208};
209
210static struct resource realview_pba8_smsc911x_resources[] = {
211	[0] = {
212		.start		= REALVIEW_PBA8_ETH_BASE,
213		.end		= REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
214		.flags		= IORESOURCE_MEM,
215	},
216	[1] = {
217		.start		= IRQ_PBA8_ETH,
218		.end		= IRQ_PBA8_ETH,
219		.flags		= IORESOURCE_IRQ,
220	},
221};
222
223static struct resource realview_pba8_isp1761_resources[] = {
224	[0] = {
225		.start		= REALVIEW_PBA8_USB_BASE,
226		.end		= REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
227		.flags		= IORESOURCE_MEM,
228	},
229	[1] = {
230		.start		= IRQ_PBA8_USB,
231		.end		= IRQ_PBA8_USB,
232		.flags		= IORESOURCE_IRQ,
233	},
234};
235
236static struct resource pmu_resource = {
237	.start		= IRQ_PBA8_PMU,
238	.end		= IRQ_PBA8_PMU,
239	.flags		= IORESOURCE_IRQ,
240};
241
242static struct platform_device pmu_device = {
243	.name			= "armv7-pmu",
244	.id			= -1,
245	.num_resources		= 1,
246	.resource		= &pmu_resource,
247};
248
249static void __init gic_init_irq(void)
250{
251	/* ARM PB-A8 on-board GIC */
252	gic_init(0, IRQ_PBA8_GIC_START,
253		 __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
254		 __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
255}
256
257static void __init realview_pba8_timer_init(void)
258{
259	timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
260	timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
261	timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
262	timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
263
264	realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
265	realview_timer_init(IRQ_PBA8_TIMER0_1);
266}
267
268static void realview_pba8_restart(enum reboot_mode mode, const char *cmd)
269{
270	void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
271	void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
272
273	/*
274	 * To reset, we hit the on-board reset register
275	 * in the system FPGA
276	 */
277	__raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
278	__raw_writel(0x0000, reset_ctrl);
279	__raw_writel(0x0004, reset_ctrl);
280	dsb();
281}
282
283static void __init realview_pba8_init(void)
284{
285	int i;
286
287	realview_flash_register(realview_pba8_flash_resource,
288				ARRAY_SIZE(realview_pba8_flash_resource));
289	realview_eth_register(NULL, realview_pba8_smsc911x_resources);
290	platform_device_register(&realview_i2c_device);
291	platform_device_register(&realview_cf_device);
292	platform_device_register(&realview_leds_device);
293	realview_usb_register(realview_pba8_isp1761_resources);
294	platform_device_register(&pmu_device);
295
296	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
297		struct amba_device *d = amba_devs[i];
298		amba_device_register(d, &iomem_resource);
299	}
300}
301
302MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
303	/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
304	.atag_offset	= 0x100,
305	.fixup		= realview_fixup,
306	.map_io		= realview_pba8_map_io,
307	.init_early	= realview_init_early,
308	.init_irq	= gic_init_irq,
309	.init_time	= realview_pba8_timer_init,
310	.init_machine	= realview_pba8_init,
311#ifdef CONFIG_ZONE_DMA
312	.dma_zone_size	= SZ_256M,
313#endif
314	.restart	= realview_pba8_restart,
315MACHINE_END
316