Merge branch 'vmalloc' of git://git.linaro.org/people/nico/linux into devel-stable
[linux-2.6.git] / arch / arm / mach-realview / realview_eb.c
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/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 <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/localtimer.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
50 static 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
92 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
93         {
94                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_SCU_BASE),
95                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_SCU_BASE),
96                 .length         = SZ_4K,
97                 .type           = MT_DEVICE,
98         }, {
99                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
100                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
101                 .length         = SZ_4K,
102                 .type           = MT_DEVICE,
103         }, {
104                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
105                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
106                 .length         = SZ_8K,
107                 .type           = MT_DEVICE,
108         }
109 };
110
111 static void __init realview_eb_map_io(void)
112 {
113         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
114         if (core_tile_eb11mp() || core_tile_a9mp())
115                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
116 }
117
118 static struct pl061_platform_data gpio0_plat_data = {
119         .gpio_base      = 0,
120         .irq_base       = -1,
121 };
122
123 static struct pl061_platform_data gpio1_plat_data = {
124         .gpio_base      = 8,
125         .irq_base       = -1,
126 };
127
128 static struct pl061_platform_data gpio2_plat_data = {
129         .gpio_base      = 16,
130         .irq_base       = -1,
131 };
132
133 static struct pl022_ssp_controller ssp0_plat_data = {
134         .bus_id = 0,
135         .enable_dma = 0,
136         .num_chipselect = 1,
137 };
138
139 /*
140  * RealView EB AMBA devices
141  */
142
143 /*
144  * These devices are connected via the core APB bridge
145  */
146 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
147 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
148
149 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
150 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
151 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
152 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
153
154 /*
155  * These devices are connected directly to the multi-layer AHB switch
156  */
157 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
158 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
159 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
160 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
161
162 /*
163  * These devices are connected via the core APB bridge
164  */
165 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
166 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
167 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
168 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
169 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
170
171 /*
172  * These devices are connected via the DMA APB bridge
173  */
174 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
175 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
176 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
177 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
178 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
179 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
180
181 /* FPGA Primecells */
182 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
183 AMBA_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
184 AMBA_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
185 AMBA_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
186 AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
187
188 /* DevChip Primecells */
189 AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
190 AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
191 AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
192 AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
193 AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
194 AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
195 AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
196 AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
197 AMBA_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
198 AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
199 AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
200 AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
201 AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
202 AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   &ssp0_plat_data);
203
204 static struct amba_device *amba_devs[] __initdata = {
205         &dmac_device,
206         &uart0_device,
207         &uart1_device,
208         &uart2_device,
209         &uart3_device,
210         &smc_device,
211         &clcd_device,
212         &sctl_device,
213         &wdog_device,
214         &gpio0_device,
215         &gpio1_device,
216         &gpio2_device,
217         &rtc_device,
218         &sci0_device,
219         &ssp0_device,
220         &aaci_device,
221         &mmc0_device,
222         &kmi0_device,
223         &kmi1_device,
224 };
225
226 /*
227  * RealView EB platform devices
228  */
229 static struct resource realview_eb_flash_resource = {
230         .start                  = REALVIEW_EB_FLASH_BASE,
231         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
232         .flags                  = IORESOURCE_MEM,
233 };
234
235 static struct resource realview_eb_eth_resources[] = {
236         [0] = {
237                 .start          = REALVIEW_EB_ETH_BASE,
238                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
239                 .flags          = IORESOURCE_MEM,
240         },
241         [1] = {
242                 .start          = IRQ_EB_ETH,
243                 .end            = IRQ_EB_ETH,
244                 .flags          = IORESOURCE_IRQ,
245         },
246 };
247
248 /*
249  * Detect and register the correct Ethernet device. RealView/EB rev D
250  * platforms use the newer SMSC LAN9118 Ethernet chip
251  */
252 static int eth_device_register(void)
253 {
254         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
255         const char *name = NULL;
256         u32 idrev;
257
258         if (!eth_addr)
259                 return -ENOMEM;
260
261         idrev = readl(eth_addr + 0x50);
262         if ((idrev & 0xFFFF0000) != 0x01180000)
263                 /* SMSC LAN9118 not present, use LAN91C111 instead */
264                 name = "smc91x";
265
266         iounmap(eth_addr);
267         return realview_eth_register(name, realview_eb_eth_resources);
268 }
269
270 static struct resource realview_eb_isp1761_resources[] = {
271         [0] = {
272                 .start          = REALVIEW_EB_USB_BASE,
273                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
274                 .flags          = IORESOURCE_MEM,
275         },
276         [1] = {
277                 .start          = IRQ_EB_USB,
278                 .end            = IRQ_EB_USB,
279                 .flags          = IORESOURCE_IRQ,
280         },
281 };
282
283 static struct resource pmu_resources[] = {
284         [0] = {
285                 .start          = IRQ_EB11MP_PMU_CPU0,
286                 .end            = IRQ_EB11MP_PMU_CPU0,
287                 .flags          = IORESOURCE_IRQ,
288         },
289         [1] = {
290                 .start          = IRQ_EB11MP_PMU_CPU1,
291                 .end            = IRQ_EB11MP_PMU_CPU1,
292                 .flags          = IORESOURCE_IRQ,
293         },
294         [2] = {
295                 .start          = IRQ_EB11MP_PMU_CPU2,
296                 .end            = IRQ_EB11MP_PMU_CPU2,
297                 .flags          = IORESOURCE_IRQ,
298         },
299         [3] = {
300                 .start          = IRQ_EB11MP_PMU_CPU3,
301                 .end            = IRQ_EB11MP_PMU_CPU3,
302                 .flags          = IORESOURCE_IRQ,
303         },
304 };
305
306 static struct platform_device pmu_device = {
307         .name                   = "arm-pmu",
308         .id                     = ARM_PMU_DEVICE_CPU,
309         .num_resources          = ARRAY_SIZE(pmu_resources),
310         .resource               = pmu_resources,
311 };
312
313 static struct resource char_lcd_resources[] = {
314         {
315                 .start = REALVIEW_CHAR_LCD_BASE,
316                 .end   = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
317                 .flags = IORESOURCE_MEM,
318         },
319         {
320                 .start  = IRQ_EB_CHARLCD,
321                 .end    = IRQ_EB_CHARLCD,
322                 .flags  = IORESOURCE_IRQ,
323         },
324 };
325
326 static struct platform_device char_lcd_device = {
327         .name           =       "arm-charlcd",
328         .id             =       -1,
329         .num_resources  =       ARRAY_SIZE(char_lcd_resources),
330         .resource       =       char_lcd_resources,
331 };
332
333 static void __init gic_init_irq(void)
334 {
335         if (core_tile_eb11mp() || core_tile_a9mp()) {
336                 unsigned int pldctrl;
337
338                 /* new irq mode */
339                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
340                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
341                 pldctrl |= 0x00800000;
342                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
343                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
344
345                 /* core tile GIC, primary */
346                 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
347                          __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
348
349 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
350                 /* board GIC, secondary */
351                 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
352                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
353                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
354 #endif
355         } else {
356                 /* board GIC, primary */
357                 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
358                          __io_address(REALVIEW_EB_GIC_CPU_BASE));
359         }
360 }
361
362 /*
363  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
364  */
365 static void realview_eb11mp_fixup(void)
366 {
367         /* AMBA devices */
368         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
369         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
370         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
371         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
372         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
373         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
374         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
375         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
376         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
377         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
378         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
379         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
380         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
381         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
382         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
383         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
384         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
385         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
386
387         /* platform devices */
388         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
389         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
390         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
391         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
392 }
393
394 static void __init realview_eb_timer_init(void)
395 {
396         unsigned int timer_irq;
397
398         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
399         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
400         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
401         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
402
403         if (core_tile_eb11mp() || core_tile_a9mp()) {
404 #ifdef CONFIG_LOCAL_TIMERS
405                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
406 #endif
407                 timer_irq = IRQ_EB11MP_TIMER0_1;
408         } else
409                 timer_irq = IRQ_EB_TIMER0_1;
410
411         realview_timer_init(timer_irq);
412 }
413
414 static struct sys_timer realview_eb_timer = {
415         .init           = realview_eb_timer_init,
416 };
417
418 static void realview_eb_reset(char mode)
419 {
420         void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
421         void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
422
423         /*
424          * To reset, we hit the on-board reset register
425          * in the system FPGA
426          */
427         __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
428         if (core_tile_eb11mp())
429                 __raw_writel(0x0008, reset_ctrl);
430 }
431
432 static void __init realview_eb_init(void)
433 {
434         int i;
435
436         if (core_tile_eb11mp() || core_tile_a9mp()) {
437                 realview_eb11mp_fixup();
438
439 #ifdef CONFIG_CACHE_L2X0
440                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
441                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
442                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
443 #endif
444                 platform_device_register(&pmu_device);
445         }
446
447         realview_flash_register(&realview_eb_flash_resource, 1);
448         platform_device_register(&realview_i2c_device);
449         platform_device_register(&char_lcd_device);
450         eth_device_register();
451         realview_usb_register(realview_eb_isp1761_resources);
452
453         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
454                 struct amba_device *d = amba_devs[i];
455                 amba_device_register(d, &iomem_resource);
456         }
457
458 #ifdef CONFIG_LEDS
459         leds_event = realview_leds_event;
460 #endif
461         realview_reset = realview_eb_reset;
462 }
463
464 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
465         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
466         .atag_offset    = 0x100,
467         .fixup          = realview_fixup,
468         .map_io         = realview_eb_map_io,
469         .init_early     = realview_init_early,
470         .init_irq       = gic_init_irq,
471         .timer          = &realview_eb_timer,
472         .handle_irq     = gic_handle_irq,
473         .init_machine   = realview_eb_init,
474 #ifdef CONFIG_ZONE_DMA
475         .dma_zone_size  = SZ_256M,
476 #endif
477 MACHINE_END