Merge commit 'v2.6.39' into 20110526
[linux-2.6.git] / arch / arm / mach-realview / realview_pbx.c
1 /*
2  *  arch/arm/mach-realview/realview_pbx.c
3  *
4  *  Copyright (C) 2009 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 version 2 as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/init.h>
22 #include <linux/platform_device.h>
23 #include <linux/sysdev.h>
24 #include <linux/amba/bus.h>
25 #include <linux/amba/pl061.h>
26 #include <linux/amba/mmci.h>
27 #include <linux/amba/pl022.h>
28 #include <linux/io.h>
29
30 #include <asm/irq.h>
31 #include <asm/leds.h>
32 #include <asm/mach-types.h>
33 #include <asm/pmu.h>
34 #include <asm/smp_twd.h>
35 #include <asm/pgtable.h>
36 #include <asm/hardware/gic.h>
37 #include <asm/hardware/cache-l2x0.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/time.h>
42
43 #include <mach/hardware.h>
44 #include <mach/board-pbx.h>
45 #include <mach/irqs.h>
46
47 #include "core.h"
48
49 static struct map_desc realview_pbx_io_desc[] __initdata = {
50         {
51                 .virtual        = IO_ADDRESS(REALVIEW_SYS_BASE),
52                 .pfn            = __phys_to_pfn(REALVIEW_SYS_BASE),
53                 .length         = SZ_4K,
54                 .type           = MT_DEVICE,
55         }, {
56                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
57                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
58                 .length         = SZ_4K,
59                 .type           = MT_DEVICE,
60         }, {
61                 .virtual        = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
62                 .pfn            = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
63                 .length         = SZ_4K,
64                 .type           = MT_DEVICE,
65         }, {
66                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
67                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
68                 .length         = SZ_4K,
69                 .type           = MT_DEVICE,
70         }, {
71                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
72                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
73                 .length         = SZ_4K,
74                 .type           = MT_DEVICE,
75         }, {
76                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
77                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
78                 .length         = SZ_4K,
79                 .type           = MT_DEVICE,
80         },
81 #ifdef CONFIG_PCI
82         {
83                 .virtual        = PCIX_UNIT_BASE,
84                 .pfn            = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
85                 .length         = REALVIEW_PBX_PCI_BASE_SIZE,
86                 .type           = MT_DEVICE,
87         },
88 #endif
89 #ifdef CONFIG_DEBUG_LL
90         {
91                 .virtual        = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
92                 .pfn            = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
93                 .length         = SZ_4K,
94                 .type           = MT_DEVICE,
95         },
96 #endif
97 };
98
99 static struct map_desc realview_local_io_desc[] __initdata = {
100         {
101                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
102                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_BASE),
103                 .length         = SZ_4K,
104                 .type           = MT_DEVICE,
105         }, {
106                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
107                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
108                 .length         = SZ_4K,
109                 .type           = MT_DEVICE,
110         }, {
111                 .virtual        = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
112                 .pfn            = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
113                 .length         = SZ_8K,
114                 .type           = MT_DEVICE,
115         }
116 };
117
118 static void __init realview_pbx_map_io(void)
119 {
120         iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
121         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
122                 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
123 }
124
125 static struct pl061_platform_data gpio0_plat_data = {
126         .gpio_base      = 0,
127         .irq_base       = -1,
128 };
129
130 static struct pl061_platform_data gpio1_plat_data = {
131         .gpio_base      = 8,
132         .irq_base       = -1,
133 };
134
135 static struct pl061_platform_data gpio2_plat_data = {
136         .gpio_base      = 16,
137         .irq_base       = -1,
138 };
139
140 static struct pl022_ssp_controller ssp0_plat_data = {
141         .bus_id = 0,
142         .enable_dma = 0,
143         .num_chipselect = 1,
144 };
145
146 /*
147  * RealView PBXCore AMBA devices
148  */
149
150 #define GPIO2_IRQ               { IRQ_PBX_GPIO2, NO_IRQ }
151 #define GPIO3_IRQ               { IRQ_PBX_GPIO3, NO_IRQ }
152 #define AACI_IRQ                { IRQ_PBX_AACI, NO_IRQ }
153 #define MMCI0_IRQ               { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
154 #define KMI0_IRQ                { IRQ_PBX_KMI0, NO_IRQ }
155 #define KMI1_IRQ                { IRQ_PBX_KMI1, NO_IRQ }
156 #define PBX_SMC_IRQ             { NO_IRQ, NO_IRQ }
157 #define MPMC_IRQ                { NO_IRQ, NO_IRQ }
158 #define PBX_CLCD_IRQ            { IRQ_PBX_CLCD, NO_IRQ }
159 #define DMAC_IRQ                { IRQ_PBX_DMAC, NO_IRQ }
160 #define SCTL_IRQ                { NO_IRQ, NO_IRQ }
161 #define PBX_WATCHDOG_IRQ        { IRQ_PBX_WATCHDOG, NO_IRQ }
162 #define PBX_GPIO0_IRQ           { IRQ_PBX_GPIO0, NO_IRQ }
163 #define GPIO1_IRQ               { IRQ_PBX_GPIO1, NO_IRQ }
164 #define PBX_RTC_IRQ             { IRQ_PBX_RTC, NO_IRQ }
165 #define SCI_IRQ                 { IRQ_PBX_SCI, NO_IRQ }
166 #define PBX_UART0_IRQ           { IRQ_PBX_UART0, NO_IRQ }
167 #define PBX_UART1_IRQ           { IRQ_PBX_UART1, NO_IRQ }
168 #define PBX_UART2_IRQ           { IRQ_PBX_UART2, NO_IRQ }
169 #define PBX_UART3_IRQ           { IRQ_PBX_UART3, NO_IRQ }
170 #define PBX_SSP_IRQ             { IRQ_PBX_SSP, NO_IRQ }
171
172 /* FPGA Primecells */
173 AMBA_DEVICE(aaci,       "fpga:aaci",    AACI,           NULL);
174 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
175 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
176 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
177 AMBA_DEVICE(uart3,      "fpga:uart3",   PBX_UART3,      NULL);
178
179 /* DevChip Primecells */
180 AMBA_DEVICE(smc,        "dev:smc",      PBX_SMC,        NULL);
181 AMBA_DEVICE(sctl,       "dev:sctl",     SCTL,           NULL);
182 AMBA_DEVICE(wdog,       "dev:wdog",     PBX_WATCHDOG,   NULL);
183 AMBA_DEVICE(gpio0,      "dev:gpio0",    PBX_GPIO0,      &gpio0_plat_data);
184 AMBA_DEVICE(gpio1,      "dev:gpio1",    GPIO1,          &gpio1_plat_data);
185 AMBA_DEVICE(gpio2,      "dev:gpio2",    GPIO2,          &gpio2_plat_data);
186 AMBA_DEVICE(rtc,        "dev:rtc",      PBX_RTC,        NULL);
187 AMBA_DEVICE(sci0,       "dev:sci0",     SCI,            NULL);
188 AMBA_DEVICE(uart0,      "dev:uart0",    PBX_UART0,      NULL);
189 AMBA_DEVICE(uart1,      "dev:uart1",    PBX_UART1,      NULL);
190 AMBA_DEVICE(uart2,      "dev:uart2",    PBX_UART2,      NULL);
191 AMBA_DEVICE(ssp0,       "dev:ssp0",     PBX_SSP,        &ssp0_plat_data);
192
193 /* Primecells on the NEC ISSP chip */
194 AMBA_DEVICE(clcd,       "issp:clcd",    PBX_CLCD,       &clcd_plat_data);
195 AMBA_DEVICE(dmac,       "issp:dmac",    DMAC,           NULL);
196
197 static struct amba_device *amba_devs[] __initdata = {
198         &dmac_device,
199         &uart0_device,
200         &uart1_device,
201         &uart2_device,
202         &uart3_device,
203         &smc_device,
204         &clcd_device,
205         &sctl_device,
206         &wdog_device,
207         &gpio0_device,
208         &gpio1_device,
209         &gpio2_device,
210         &rtc_device,
211         &sci0_device,
212         &ssp0_device,
213         &aaci_device,
214         &mmc0_device,
215         &kmi0_device,
216         &kmi1_device,
217 };
218
219 /*
220  * RealView PB-X platform devices
221  */
222 static struct resource realview_pbx_flash_resources[] = {
223         [0] = {
224                 .start          = REALVIEW_PBX_FLASH0_BASE,
225                 .end            = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
226                 .flags          = IORESOURCE_MEM,
227         },
228         [1] = {
229                 .start          = REALVIEW_PBX_FLASH1_BASE,
230                 .end            = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
231                 .flags          = IORESOURCE_MEM,
232         },
233 };
234
235 static struct resource realview_pbx_smsc911x_resources[] = {
236         [0] = {
237                 .start          = REALVIEW_PBX_ETH_BASE,
238                 .end            = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
239                 .flags          = IORESOURCE_MEM,
240         },
241         [1] = {
242                 .start          = IRQ_PBX_ETH,
243                 .end            = IRQ_PBX_ETH,
244                 .flags          = IORESOURCE_IRQ,
245         },
246 };
247
248 static struct resource realview_pbx_isp1761_resources[] = {
249         [0] = {
250                 .start          = REALVIEW_PBX_USB_BASE,
251                 .end            = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
252                 .flags          = IORESOURCE_MEM,
253         },
254         [1] = {
255                 .start          = IRQ_PBX_USB,
256                 .end            = IRQ_PBX_USB,
257                 .flags          = IORESOURCE_IRQ,
258         },
259 };
260
261 static struct resource pmu_resources[] = {
262         [0] = {
263                 .start          = IRQ_PBX_PMU_CPU0,
264                 .end            = IRQ_PBX_PMU_CPU0,
265                 .flags          = IORESOURCE_IRQ,
266         },
267         [1] = {
268                 .start          = IRQ_PBX_PMU_CPU1,
269                 .end            = IRQ_PBX_PMU_CPU1,
270                 .flags          = IORESOURCE_IRQ,
271         },
272         [2] = {
273                 .start          = IRQ_PBX_PMU_CPU2,
274                 .end            = IRQ_PBX_PMU_CPU2,
275                 .flags          = IORESOURCE_IRQ,
276         },
277         [3] = {
278                 .start          = IRQ_PBX_PMU_CPU3,
279                 .end            = IRQ_PBX_PMU_CPU3,
280                 .flags          = IORESOURCE_IRQ,
281         },
282 };
283
284 static struct platform_device pmu_device = {
285         .name                   = "arm-pmu",
286         .id                     = ARM_PMU_DEVICE_CPU,
287         .num_resources          = ARRAY_SIZE(pmu_resources),
288         .resource               = pmu_resources,
289 };
290
291 static void __init gic_init_irq(void)
292 {
293         /* ARM PBX on-board GIC */
294         if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
295                 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
296                          __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
297         } else {
298                 gic_init(0, IRQ_PBX_GIC_START,
299                          __io_address(REALVIEW_PBX_GIC_DIST_BASE),
300                          __io_address(REALVIEW_PBX_GIC_CPU_BASE));
301         }
302 }
303
304 static void __init realview_pbx_timer_init(void)
305 {
306         timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
307         timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
308         timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
309         timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
310
311 #ifdef CONFIG_LOCAL_TIMERS
312         if (core_tile_pbx11mp() || core_tile_pbxa9mp())
313                 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
314 #endif
315         realview_timer_init(IRQ_PBX_TIMER0_1);
316 }
317
318 static struct sys_timer realview_pbx_timer = {
319         .init           = realview_pbx_timer_init,
320 };
321
322 static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
323                                char **from, struct meminfo *meminfo)
324 {
325 #ifdef CONFIG_SPARSEMEM
326         /*
327          * Memory configuration with SPARSEMEM enabled on RealView PBX (see
328          * asm/mach/memory.h for more information).
329          */
330         meminfo->bank[0].start = 0;
331         meminfo->bank[0].size = SZ_256M;
332         meminfo->bank[1].start = 0x20000000;
333         meminfo->bank[1].size = SZ_512M;
334         meminfo->bank[2].start = 0x80000000;
335         meminfo->bank[2].size = SZ_256M;
336         meminfo->nr_banks = 3;
337 #else
338         realview_fixup(mdesc, tags, from, meminfo);
339 #endif
340 }
341
342 static void realview_pbx_reset(char mode)
343 {
344         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
345         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
346
347         /*
348          * To reset, we hit the on-board reset register
349          * in the system FPGA
350          */
351         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
352         __raw_writel(0x00F0, reset_ctrl);
353         __raw_writel(0x00F4, reset_ctrl);
354 }
355
356 static void __init realview_pbx_init(void)
357 {
358         int i;
359
360 #ifdef CONFIG_CACHE_L2X0
361         if (core_tile_pbxa9mp()) {
362                 void __iomem *l2x0_base =
363                         __io_address(REALVIEW_PBX_TILE_L220_BASE);
364
365                 /* set RAM latencies to 1 cycle for eASIC */
366                 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
367                 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
368
369                 /* 16KB way size, 8-way associativity, parity disabled
370                  * Bits:  .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
371                 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
372                 platform_device_register(&pmu_device);
373         }
374 #endif
375
376         realview_flash_register(realview_pbx_flash_resources,
377                                 ARRAY_SIZE(realview_pbx_flash_resources));
378         realview_eth_register(NULL, realview_pbx_smsc911x_resources);
379         platform_device_register(&realview_i2c_device);
380         platform_device_register(&realview_cf_device);
381         realview_usb_register(realview_pbx_isp1761_resources);
382
383         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
384                 struct amba_device *d = amba_devs[i];
385                 amba_device_register(d, &iomem_resource);
386         }
387
388 #ifdef CONFIG_LEDS
389         leds_event = realview_leds_event;
390 #endif
391         realview_reset = realview_pbx_reset;
392 }
393
394 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
395         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
396         .boot_params    = PLAT_PHYS_OFFSET + 0x00000100,
397         .fixup          = realview_pbx_fixup,
398         .map_io         = realview_pbx_map_io,
399         .init_early     = realview_init_early,
400         .init_irq       = gic_init_irq,
401         .timer          = &realview_pbx_timer,
402         .init_machine   = realview_pbx_init,
403 MACHINE_END