Merge branch 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic...
[linux-2.6-block.git] / arch / arm / mach-realview / realview_pbx.c
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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>
eb7fffa3 25#include <linux/amba/pl061.h>
6ef297f8 26#include <linux/amba/mmci.h>
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27#include <linux/io.h>
28
29#include <asm/irq.h>
30#include <asm/leds.h>
31#include <asm/mach-types.h>
f417cbad 32#include <asm/pmu.h>
c3c21740 33#include <asm/smp_twd.h>
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34#include <asm/hardware/gic.h>
35#include <asm/hardware/cache-l2x0.h>
36
37#include <asm/mach/arch.h>
38#include <asm/mach/map.h>
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39#include <asm/mach/time.h>
40
41#include <mach/hardware.h>
42#include <mach/board-pbx.h>
43#include <mach/irqs.h>
44
45#include "core.h"
46
47static struct map_desc realview_pbx_io_desc[] __initdata = {
48 {
49 .virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
50 .pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
51 .length = SZ_4K,
52 .type = MT_DEVICE,
53 }, {
54 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_CPU_BASE),
55 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
56 .length = SZ_4K,
57 .type = MT_DEVICE,
58 }, {
59 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
60 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_DIST_BASE),
61 .length = SZ_4K,
62 .type = MT_DEVICE,
63 }, {
64 .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
65 .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
66 .length = SZ_4K,
67 .type = MT_DEVICE,
68 }, {
69 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER0_1_BASE),
70 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
71 .length = SZ_4K,
72 .type = MT_DEVICE,
73 }, {
74 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
75 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
76 .length = SZ_4K,
77 .type = MT_DEVICE,
78 },
79#ifdef CONFIG_PCI
80 {
81 .virtual = PCIX_UNIT_BASE,
82 .pfn = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
83 .length = REALVIEW_PBX_PCI_BASE_SIZE,
84 .type = MT_DEVICE,
85 },
86#endif
87#ifdef CONFIG_DEBUG_LL
88 {
89 .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
90 .pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
91 .length = SZ_4K,
92 .type = MT_DEVICE,
93 },
94#endif
95};
96
97static struct map_desc realview_local_io_desc[] __initdata = {
98 {
99 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
100 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_BASE),
101 .length = SZ_4K,
102 .type = MT_DEVICE,
103 }, {
104 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
105 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
106 .length = SZ_4K,
107 .type = MT_DEVICE,
108 }, {
109 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
110 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
111 .length = SZ_8K,
112 .type = MT_DEVICE,
113 }
114};
115
116static void __init realview_pbx_map_io(void)
117{
118 iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
119 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
120 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
121}
122
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123static struct pl061_platform_data gpio0_plat_data = {
124 .gpio_base = 0,
125 .irq_base = -1,
126};
127
128static struct pl061_platform_data gpio1_plat_data = {
129 .gpio_base = 8,
130 .irq_base = -1,
131};
132
133static struct pl061_platform_data gpio2_plat_data = {
134 .gpio_base = 16,
135 .irq_base = -1,
136};
137
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138/*
139 * RealView PBXCore AMBA devices
140 */
141
142#define GPIO2_IRQ { IRQ_PBX_GPIO2, NO_IRQ }
143#define GPIO2_DMA { 0, 0 }
144#define GPIO3_IRQ { IRQ_PBX_GPIO3, NO_IRQ }
145#define GPIO3_DMA { 0, 0 }
146#define AACI_IRQ { IRQ_PBX_AACI, NO_IRQ }
147#define AACI_DMA { 0x80, 0x81 }
148#define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
149#define MMCI0_DMA { 0x84, 0 }
150#define KMI0_IRQ { IRQ_PBX_KMI0, NO_IRQ }
151#define KMI0_DMA { 0, 0 }
152#define KMI1_IRQ { IRQ_PBX_KMI1, NO_IRQ }
153#define KMI1_DMA { 0, 0 }
154#define PBX_SMC_IRQ { NO_IRQ, NO_IRQ }
155#define PBX_SMC_DMA { 0, 0 }
156#define MPMC_IRQ { NO_IRQ, NO_IRQ }
157#define MPMC_DMA { 0, 0 }
158#define PBX_CLCD_IRQ { IRQ_PBX_CLCD, NO_IRQ }
159#define PBX_CLCD_DMA { 0, 0 }
160#define DMAC_IRQ { IRQ_PBX_DMAC, NO_IRQ }
161#define DMAC_DMA { 0, 0 }
162#define SCTL_IRQ { NO_IRQ, NO_IRQ }
163#define SCTL_DMA { 0, 0 }
164#define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG, NO_IRQ }
165#define PBX_WATCHDOG_DMA { 0, 0 }
166#define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0, NO_IRQ }
167#define PBX_GPIO0_DMA { 0, 0 }
168#define GPIO1_IRQ { IRQ_PBX_GPIO1, NO_IRQ }
169#define GPIO1_DMA { 0, 0 }
170#define PBX_RTC_IRQ { IRQ_PBX_RTC, NO_IRQ }
171#define PBX_RTC_DMA { 0, 0 }
172#define SCI_IRQ { IRQ_PBX_SCI, NO_IRQ }
173#define SCI_DMA { 7, 6 }
174#define PBX_UART0_IRQ { IRQ_PBX_UART0, NO_IRQ }
175#define PBX_UART0_DMA { 15, 14 }
176#define PBX_UART1_IRQ { IRQ_PBX_UART1, NO_IRQ }
177#define PBX_UART1_DMA { 13, 12 }
178#define PBX_UART2_IRQ { IRQ_PBX_UART2, NO_IRQ }
179#define PBX_UART2_DMA { 11, 10 }
180#define PBX_UART3_IRQ { IRQ_PBX_UART3, NO_IRQ }
181#define PBX_UART3_DMA { 0x86, 0x87 }
182#define PBX_SSP_IRQ { IRQ_PBX_SSP, NO_IRQ }
183#define PBX_SSP_DMA { 9, 8 }
184
185/* FPGA Primecells */
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186AMBA_DEVICE(aaci, "fpga:aaci", AACI, NULL);
187AMBA_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
188AMBA_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
189AMBA_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
190AMBA_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL);
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191
192/* DevChip Primecells */
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193AMBA_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
194AMBA_DEVICE(sctl, "dev:sctl", SCTL, NULL);
195AMBA_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
196AMBA_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data);
197AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
198AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
199AMBA_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL);
200AMBA_DEVICE(sci0, "dev:sci0", SCI, NULL);
201AMBA_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
202AMBA_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
203AMBA_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
204AMBA_DEVICE(ssp0, "dev:ssp0", PBX_SSP, NULL);
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205
206/* Primecells on the NEC ISSP chip */
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207AMBA_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
208AMBA_DEVICE(dmac, "issp:dmac", DMAC, NULL);
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209
210static struct amba_device *amba_devs[] __initdata = {
211 &dmac_device,
212 &uart0_device,
213 &uart1_device,
214 &uart2_device,
215 &uart3_device,
216 &smc_device,
217 &clcd_device,
218 &sctl_device,
219 &wdog_device,
220 &gpio0_device,
221 &gpio1_device,
222 &gpio2_device,
223 &rtc_device,
224 &sci0_device,
225 &ssp0_device,
226 &aaci_device,
227 &mmc0_device,
228 &kmi0_device,
229 &kmi1_device,
230};
231
232/*
233 * RealView PB-X platform devices
234 */
235static struct resource realview_pbx_flash_resources[] = {
236 [0] = {
237 .start = REALVIEW_PBX_FLASH0_BASE,
238 .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
239 .flags = IORESOURCE_MEM,
240 },
241 [1] = {
242 .start = REALVIEW_PBX_FLASH1_BASE,
243 .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
244 .flags = IORESOURCE_MEM,
245 },
246};
247
248static struct resource realview_pbx_smsc911x_resources[] = {
249 [0] = {
250 .start = REALVIEW_PBX_ETH_BASE,
251 .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
252 .flags = IORESOURCE_MEM,
253 },
254 [1] = {
255 .start = IRQ_PBX_ETH,
256 .end = IRQ_PBX_ETH,
257 .flags = IORESOURCE_IRQ,
258 },
259};
260
261static struct resource realview_pbx_isp1761_resources[] = {
262 [0] = {
263 .start = REALVIEW_PBX_USB_BASE,
264 .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
265 .flags = IORESOURCE_MEM,
266 },
267 [1] = {
268 .start = IRQ_PBX_USB,
269 .end = IRQ_PBX_USB,
270 .flags = IORESOURCE_IRQ,
271 },
272};
273
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274static struct resource pmu_resources[] = {
275 [0] = {
276 .start = IRQ_PBX_PMU_CPU0,
277 .end = IRQ_PBX_PMU_CPU0,
278 .flags = IORESOURCE_IRQ,
279 },
280 [1] = {
281 .start = IRQ_PBX_PMU_CPU1,
282 .end = IRQ_PBX_PMU_CPU1,
283 .flags = IORESOURCE_IRQ,
284 },
285 [2] = {
286 .start = IRQ_PBX_PMU_CPU2,
287 .end = IRQ_PBX_PMU_CPU2,
288 .flags = IORESOURCE_IRQ,
289 },
290 [3] = {
291 .start = IRQ_PBX_PMU_CPU3,
292 .end = IRQ_PBX_PMU_CPU3,
293 .flags = IORESOURCE_IRQ,
294 },
295};
296
297static struct platform_device pmu_device = {
298 .name = "arm-pmu",
299 .id = ARM_PMU_DEVICE_CPU,
300 .num_resources = ARRAY_SIZE(pmu_resources),
301 .resource = pmu_resources,
302};
303
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304static void __init gic_init_irq(void)
305{
306 /* ARM PBX on-board GIC */
307 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
308 gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
309 gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
310 29);
311 gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
312 } else {
313 gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
314 gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
315 IRQ_PBX_GIC_START);
316 gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
317 }
318}
319
320static void __init realview_pbx_timer_init(void)
321{
322 timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
323 timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
324 timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
325 timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
326
327#ifdef CONFIG_LOCAL_TIMERS
328 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
329 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
330#endif
331 realview_timer_init(IRQ_PBX_TIMER0_1);
332}
333
334static struct sys_timer realview_pbx_timer = {
335 .init = realview_pbx_timer_init,
336};
337
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338static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
339 char **from, struct meminfo *meminfo)
340{
341#ifdef CONFIG_SPARSEMEM
342 /*
343 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
344 * asm/mach/memory.h for more information).
345 */
346 meminfo->bank[0].start = 0;
347 meminfo->bank[0].size = SZ_256M;
348 meminfo->bank[1].start = 0x20000000;
349 meminfo->bank[1].size = SZ_512M;
350 meminfo->bank[2].start = 0x80000000;
351 meminfo->bank[2].size = SZ_256M;
352 meminfo->nr_banks = 3;
353#else
354 realview_fixup(mdesc, tags, from, meminfo);
355#endif
356}
357
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358static void realview_pbx_reset(char mode)
359{
360 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
361 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
362
363 /*
364 * To reset, we hit the on-board reset register
365 * in the system FPGA
366 */
367 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
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368 __raw_writel(0x00F0, reset_ctrl);
369 __raw_writel(0x00F4, reset_ctrl);
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370}
371
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372static void __init realview_pbx_init(void)
373{
374 int i;
375
376#ifdef CONFIG_CACHE_L2X0
377 if (core_tile_pbxa9mp()) {
378 void __iomem *l2x0_base =
379 __io_address(REALVIEW_PBX_TILE_L220_BASE);
380
381 /* set RAM latencies to 1 cycle for eASIC */
382 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
383 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
384
385 /* 16KB way size, 8-way associativity, parity disabled
386 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
387 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
f417cbad 388 platform_device_register(&pmu_device);
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389 }
390#endif
391
392 realview_flash_register(realview_pbx_flash_resources,
393 ARRAY_SIZE(realview_pbx_flash_resources));
394 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
395 platform_device_register(&realview_i2c_device);
396 platform_device_register(&realview_cf_device);
397 realview_usb_register(realview_pbx_isp1761_resources);
398
399 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
400 struct amba_device *d = amba_devs[i];
401 amba_device_register(d, &iomem_resource);
402 }
403
404#ifdef CONFIG_LEDS
405 leds_event = realview_leds_event;
406#endif
4c9f8be7 407 realview_reset = realview_pbx_reset;
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408}
409
410MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
411 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
412 .phys_io = REALVIEW_PBX_UART0_BASE,
413 .io_pg_offst = (IO_ADDRESS(REALVIEW_PBX_UART0_BASE) >> 18) & 0xfffc,
414 .boot_params = PHYS_OFFSET + 0x00000100,
c97c5aa8 415 .fixup = realview_pbx_fixup,
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416 .map_io = realview_pbx_map_io,
417 .init_irq = gic_init_irq,
418 .timer = &realview_pbx_timer,
419 .init_machine = realview_pbx_init,
420MACHINE_END