Merge commit 'v2.6.39' into 20110526
[linux-2.6.git] / arch / arm / mach-realview / realview_pba8.c
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/sysdev.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 <asm/irq.h>
32 #include <asm/leds.h>
33 #include <asm/mach-types.h>
34 #include <asm/pmu.h>
35 #include <asm/pgtable.h>
36 #include <asm/hardware/gic.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
48 static 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
98 static void __init realview_pba8_map_io(void)
99 {
100         iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
101 }
102
103 static struct pl061_platform_data gpio0_plat_data = {
104         .gpio_base      = 0,
105         .irq_base       = -1,
106 };
107
108 static struct pl061_platform_data gpio1_plat_data = {
109         .gpio_base      = 8,
110         .irq_base       = -1,
111 };
112
113 static struct pl061_platform_data gpio2_plat_data = {
114         .gpio_base      = 16,
115         .irq_base       = -1,
116 };
117
118 static struct pl022_ssp_controller ssp0_plat_data = {
119         .bus_id = 0,
120         .enable_dma = 0,
121         .num_chipselect = 1,
122 };
123
124 /*
125  * RealView PBA8Core AMBA devices
126  */
127
128 #define GPIO2_IRQ               { IRQ_PBA8_GPIO2, NO_IRQ }
129 #define GPIO3_IRQ               { IRQ_PBA8_GPIO3, NO_IRQ }
130 #define AACI_IRQ                { IRQ_PBA8_AACI, NO_IRQ }
131 #define MMCI0_IRQ               { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
132 #define KMI0_IRQ                { IRQ_PBA8_KMI0, NO_IRQ }
133 #define KMI1_IRQ                { IRQ_PBA8_KMI1, NO_IRQ }
134 #define PBA8_SMC_IRQ            { NO_IRQ, NO_IRQ }
135 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
136 #define PBA8_CLCD_IRQ           { IRQ_PBA8_CLCD, NO_IRQ }
137 #define DMAC_IRQ                { IRQ_PBA8_DMAC, NO_IRQ }
138 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
139 #define PBA8_WATCHDOG_IRQ       { IRQ_PBA8_WATCHDOG, NO_IRQ }
140 #define PBA8_GPIO0_IRQ          { IRQ_PBA8_GPIO0, NO_IRQ }
141 #define GPIO1_IRQ               { IRQ_PBA8_GPIO1, NO_IRQ }
142 #define PBA8_RTC_IRQ            { IRQ_PBA8_RTC, NO_IRQ }
143 #define SCI_IRQ                 { IRQ_PBA8_SCI, NO_IRQ }
144 #define PBA8_UART0_IRQ          { IRQ_PBA8_UART0, NO_IRQ }
145 #define PBA8_UART1_IRQ          { IRQ_PBA8_UART1, NO_IRQ }
146 #define PBA8_UART2_IRQ          { IRQ_PBA8_UART2, NO_IRQ }
147 #define PBA8_UART3_IRQ          { IRQ_PBA8_UART3, NO_IRQ }
148 #define PBA8_SSP_IRQ            { IRQ_PBA8_SSP, NO_IRQ }
149
150 /* FPGA Primecells */
151 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
152 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
153 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
154 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
155 AMBA_DEVICE(uart3,      "fpga:uart3",   PBA8_UART3,     NULL);
156
157 /* DevChip Primecells */
158 AMBA_DEVICE(smc,        "dev:smc",      PBA8_SMC,       NULL);
159 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
160 AMBA_DEVICE(wdog,       "dev:wdog",     PBA8_WATCHDOG, NULL);
161 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBA8_GPIO0,     &gpio0_plat_data);
162 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
163 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
164 AMBA_DEVICE(rtc,        "dev:rtc",      PBA8_RTC,       NULL);
165 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
166 AMBA_DEVICE(uart0,      "dev:uart0",    PBA8_UART0,     NULL);
167 AMBA_DEVICE(uart1,      "dev:uart1",    PBA8_UART1,     NULL);
168 AMBA_DEVICE(uart2,      "dev:uart2",    PBA8_UART2,     NULL);
169 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBA8_SSP,       &ssp0_plat_data);
170
171 /* Primecells on the NEC ISSP chip */
172 AMBA_DEVICE(clcd,       "issp:clcd",    PBA8_CLCD,      &clcd_plat_data);
173 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
174
175 static struct amba_device *amba_devs[] __initdata = {
176         &dmac_device,
177         &uart0_device,
178         &uart1_device,
179         &uart2_device,
180         &uart3_device,
181         &smc_device,
182         &clcd_device,
183         &sctl_device,
184         &wdog_device,
185         &gpio0_device,
186         &gpio1_device,
187         &gpio2_device,
188         &rtc_device,
189         &sci0_device,
190         &ssp0_device,
191         &aaci_device,
192         &mmc0_device,
193         &kmi0_device,
194         &kmi1_device,
195 };
196
197 /*
198  * RealView PB-A8 platform devices
199  */
200 static struct resource realview_pba8_flash_resource[] = {
201         [0] = {
202                 .start          = REALVIEW_PBA8_FLASH0_BASE,
203                 .end            = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
204                 .flags          = IORESOURCE_MEM,
205         },
206         [1] = {
207                 .start          = REALVIEW_PBA8_FLASH1_BASE,
208                 .end            = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
209                 .flags          = IORESOURCE_MEM,
210         },
211 };
212
213 static struct resource realview_pba8_smsc911x_resources[] = {
214         [0] = {
215                 .start          = REALVIEW_PBA8_ETH_BASE,
216                 .end            = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
217                 .flags          = IORESOURCE_MEM,
218         },
219         [1] = {
220                 .start          = IRQ_PBA8_ETH,
221                 .end            = IRQ_PBA8_ETH,
222                 .flags          = IORESOURCE_IRQ,
223         },
224 };
225
226 static struct resource realview_pba8_isp1761_resources[] = {
227         [0] = {
228                 .start          = REALVIEW_PBA8_USB_BASE,
229                 .end            = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
230                 .flags          = IORESOURCE_MEM,
231         },
232         [1] = {
233                 .start          = IRQ_PBA8_USB,
234                 .end            = IRQ_PBA8_USB,
235                 .flags          = IORESOURCE_IRQ,
236         },
237 };
238
239 static struct resource pmu_resource = {
240         .start          = IRQ_PBA8_PMU,
241         .end            = IRQ_PBA8_PMU,
242         .flags          = IORESOURCE_IRQ,
243 };
244
245 static struct platform_device pmu_device = {
246         .name                   = "arm-pmu",
247         .id                     = ARM_PMU_DEVICE_CPU,
248         .num_resources          = 1,
249         .resource               = &pmu_resource,
250 };
251
252 static void __init gic_init_irq(void)
253 {
254         /* ARM PB-A8 on-board GIC */
255         gic_init(0, IRQ_PBA8_GIC_START,
256                  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
257                  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
258 }
259
260 static void __init realview_pba8_timer_init(void)
261 {
262         timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
263         timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
264         timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
265         timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
266
267         realview_timer_init(IRQ_PBA8_TIMER0_1);
268 }
269
270 static struct sys_timer realview_pba8_timer = {
271         .init           = realview_pba8_timer_init,
272 };
273
274 static void realview_pba8_reset(char mode)
275 {
276         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
277         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
278
279         /*
280          * To reset, we hit the on-board reset register
281          * in the system FPGA
282          */
283         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
284         __raw_writel(0x0000, reset_ctrl);
285         __raw_writel(0x0004, reset_ctrl);
286 }
287
288 static void __init realview_pba8_init(void)
289 {
290         int i;
291
292         realview_flash_register(realview_pba8_flash_resource,
293                                 ARRAY_SIZE(realview_pba8_flash_resource));
294         realview_eth_register(NULL, realview_pba8_smsc911x_resources);
295         platform_device_register(&realview_i2c_device);
296         platform_device_register(&realview_cf_device);
297         realview_usb_register(realview_pba8_isp1761_resources);
298         platform_device_register(&pmu_device);
299
300         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
301                 struct amba_device *d = amba_devs[i];
302                 amba_device_register(d, &iomem_resource);
303         }
304
305 #ifdef CONFIG_LEDS
306         leds_event = realview_leds_event;
307 #endif
308         realview_reset = realview_pba8_reset;
309 }
310
311 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
312         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
313         .boot_params    = PLAT_PHYS_OFFSET + 0x00000100,
314         .fixup          = realview_fixup,
315         .map_io         = realview_pba8_map_io,
316         .init_early     = realview_init_early,
317         .init_irq       = gic_init_irq,
318         .timer          = &realview_pba8_timer,
319         .init_machine   = realview_pba8_init,
320 MACHINE_END