Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
[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/io.h>
29
30 #include <mach/hardware.h>
31 #include <asm/irq.h>
32 #include <asm/leds.h>
33 #include <asm/mach-types.h>
34 #include <asm/hardware/gic.h>
35 #include <asm/hardware/icst307.h>
36 #include <asm/hardware/cache-l2x0.h>
37 #include <asm/localtimer.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/time.h>
42
43 #include <mach/board-eb.h>
44 #include <mach/irqs.h>
45
46 #include "core.h"
47 #include "clock.h"
48
49 static struct map_desc realview_eb_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_EB_GIC_CPU_BASE),
57                 .pfn            = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
58                 .length         = SZ_4K,
59                 .type           = MT_DEVICE,
60         }, {
61                 .virtual        = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
62                 .pfn            = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE),
72                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
73                 .length         = SZ_4K,
74                 .type           = MT_DEVICE,
75         }, {
76                 .virtual        = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
77                 .pfn            = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
78                 .length         = SZ_4K,
79                 .type           = MT_DEVICE,
80         },
81 #ifdef CONFIG_DEBUG_LL
82         {
83                 .virtual        = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
84                 .pfn            = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
85                 .length         = SZ_4K,
86                 .type           = MT_DEVICE,
87         }
88 #endif
89 };
90
91 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
92         {
93                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
94                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
95                 .length         = SZ_4K,
96                 .type           = MT_DEVICE,
97         }, {
98                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
99                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
100                 .length         = SZ_4K,
101                 .type           = MT_DEVICE,
102         }, {
103                 .virtual        = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
104                 .pfn            = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
105                 .length         = SZ_8K,
106                 .type           = MT_DEVICE,
107         }
108 };
109
110 static void __init realview_eb_map_io(void)
111 {
112         iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
113         if (core_tile_eb11mp() || core_tile_a9mp())
114                 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
115 }
116
117 static struct pl061_platform_data gpio0_plat_data = {
118         .gpio_base      = 0,
119         .irq_base       = -1,
120 };
121
122 static struct pl061_platform_data gpio1_plat_data = {
123         .gpio_base      = 8,
124         .irq_base       = -1,
125 };
126
127 static struct pl061_platform_data gpio2_plat_data = {
128         .gpio_base      = 16,
129         .irq_base       = -1,
130 };
131
132 /*
133  * RealView EB AMBA devices
134  */
135
136 /*
137  * These devices are connected via the core APB bridge
138  */
139 #define GPIO2_IRQ       { IRQ_EB_GPIO2, NO_IRQ }
140 #define GPIO2_DMA       { 0, 0 }
141 #define GPIO3_IRQ       { IRQ_EB_GPIO3, NO_IRQ }
142 #define GPIO3_DMA       { 0, 0 }
143
144 #define AACI_IRQ        { IRQ_EB_AACI, NO_IRQ }
145 #define AACI_DMA        { 0x80, 0x81 }
146 #define MMCI0_IRQ       { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
147 #define MMCI0_DMA       { 0x84, 0 }
148 #define KMI0_IRQ        { IRQ_EB_KMI0, NO_IRQ }
149 #define KMI0_DMA        { 0, 0 }
150 #define KMI1_IRQ        { IRQ_EB_KMI1, NO_IRQ }
151 #define KMI1_DMA        { 0, 0 }
152
153 /*
154  * These devices are connected directly to the multi-layer AHB switch
155  */
156 #define EB_SMC_IRQ      { NO_IRQ, NO_IRQ }
157 #define EB_SMC_DMA      { 0, 0 }
158 #define MPMC_IRQ        { NO_IRQ, NO_IRQ }
159 #define MPMC_DMA        { 0, 0 }
160 #define EB_CLCD_IRQ     { IRQ_EB_CLCD, NO_IRQ }
161 #define EB_CLCD_DMA     { 0, 0 }
162 #define DMAC_IRQ        { IRQ_EB_DMA, NO_IRQ }
163 #define DMAC_DMA        { 0, 0 }
164
165 /*
166  * These devices are connected via the core APB bridge
167  */
168 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
169 #define SCTL_DMA        { 0, 0 }
170 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
171 #define EB_WATCHDOG_DMA { 0, 0 }
172 #define EB_GPIO0_IRQ    { IRQ_EB_GPIO0, NO_IRQ }
173 #define EB_GPIO0_DMA    { 0, 0 }
174 #define GPIO1_IRQ       { IRQ_EB_GPIO1, NO_IRQ }
175 #define GPIO1_DMA       { 0, 0 }
176 #define EB_RTC_IRQ      { IRQ_EB_RTC, NO_IRQ }
177 #define EB_RTC_DMA      { 0, 0 }
178
179 /*
180  * These devices are connected via the DMA APB bridge
181  */
182 #define SCI_IRQ         { IRQ_EB_SCI, NO_IRQ }
183 #define SCI_DMA         { 7, 6 }
184 #define EB_UART0_IRQ    { IRQ_EB_UART0, NO_IRQ }
185 #define EB_UART0_DMA    { 15, 14 }
186 #define EB_UART1_IRQ    { IRQ_EB_UART1, NO_IRQ }
187 #define EB_UART1_DMA    { 13, 12 }
188 #define EB_UART2_IRQ    { IRQ_EB_UART2, NO_IRQ }
189 #define EB_UART2_DMA    { 11, 10 }
190 #define EB_UART3_IRQ    { IRQ_EB_UART3, NO_IRQ }
191 #define EB_UART3_DMA    { 0x86, 0x87 }
192 #define EB_SSP_IRQ      { IRQ_EB_SSP, NO_IRQ }
193 #define EB_SSP_DMA      { 9, 8 }
194
195 /* FPGA Primecells */
196 AMBA_DEVICE(aaci,  "fpga:aaci",  AACI,     NULL);
197 AMBA_DEVICE(mmc0,  "fpga:mmc0",  MMCI0,    &realview_mmc0_plat_data);
198 AMBA_DEVICE(kmi0,  "fpga:kmi0",  KMI0,     NULL);
199 AMBA_DEVICE(kmi1,  "fpga:kmi1",  KMI1,     NULL);
200 AMBA_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
201
202 /* DevChip Primecells */
203 AMBA_DEVICE(smc,   "dev:smc",   EB_SMC,   NULL);
204 AMBA_DEVICE(clcd,  "dev:clcd",  EB_CLCD,  &clcd_plat_data);
205 AMBA_DEVICE(dmac,  "dev:dmac",  DMAC,     NULL);
206 AMBA_DEVICE(sctl,  "dev:sctl",  SCTL,     NULL);
207 AMBA_DEVICE(wdog,  "dev:wdog",  EB_WATCHDOG, NULL);
208 AMBA_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
209 AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1,    &gpio1_plat_data);
210 AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2,    &gpio2_plat_data);
211 AMBA_DEVICE(rtc,   "dev:rtc",   EB_RTC,   NULL);
212 AMBA_DEVICE(sci0,  "dev:sci0",  SCI,      NULL);
213 AMBA_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
214 AMBA_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
215 AMBA_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
216 AMBA_DEVICE(ssp0,  "dev:ssp0",  EB_SSP,   NULL);
217
218 static struct amba_device *amba_devs[] __initdata = {
219         &dmac_device,
220         &uart0_device,
221         &uart1_device,
222         &uart2_device,
223         &uart3_device,
224         &smc_device,
225         &clcd_device,
226         &sctl_device,
227         &wdog_device,
228         &gpio0_device,
229         &gpio1_device,
230         &gpio2_device,
231         &rtc_device,
232         &sci0_device,
233         &ssp0_device,
234         &aaci_device,
235         &mmc0_device,
236         &kmi0_device,
237         &kmi1_device,
238 };
239
240 /*
241  * RealView EB platform devices
242  */
243 static struct resource realview_eb_flash_resource = {
244         .start                  = REALVIEW_EB_FLASH_BASE,
245         .end                    = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
246         .flags                  = IORESOURCE_MEM,
247 };
248
249 static struct resource realview_eb_eth_resources[] = {
250         [0] = {
251                 .start          = REALVIEW_EB_ETH_BASE,
252                 .end            = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
253                 .flags          = IORESOURCE_MEM,
254         },
255         [1] = {
256                 .start          = IRQ_EB_ETH,
257                 .end            = IRQ_EB_ETH,
258                 .flags          = IORESOURCE_IRQ,
259         },
260 };
261
262 /*
263  * Detect and register the correct Ethernet device. RealView/EB rev D
264  * platforms use the newer SMSC LAN9118 Ethernet chip
265  */
266 static int eth_device_register(void)
267 {
268         void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
269         const char *name = NULL;
270         u32 idrev;
271
272         if (!eth_addr)
273                 return -ENOMEM;
274
275         idrev = readl(eth_addr + 0x50);
276         if ((idrev & 0xFFFF0000) != 0x01180000)
277                 /* SMSC LAN9118 not present, use LAN91C111 instead */
278                 name = "smc91x";
279
280         iounmap(eth_addr);
281         return realview_eth_register(name, realview_eb_eth_resources);
282 }
283
284 static struct resource realview_eb_isp1761_resources[] = {
285         [0] = {
286                 .start          = REALVIEW_EB_USB_BASE,
287                 .end            = REALVIEW_EB_USB_BASE + SZ_128K - 1,
288                 .flags          = IORESOURCE_MEM,
289         },
290         [1] = {
291                 .start          = IRQ_EB_USB,
292                 .end            = IRQ_EB_USB,
293                 .flags          = IORESOURCE_IRQ,
294         },
295 };
296
297 static void __init gic_init_irq(void)
298 {
299         if (core_tile_eb11mp() || core_tile_a9mp()) {
300                 unsigned int pldctrl;
301
302                 /* new irq mode */
303                 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
304                 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
305                 pldctrl |= 0x00800000;
306                 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
307                 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
308
309                 /* core tile GIC, primary */
310                 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
311                 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
312                 gic_cpu_init(0, gic_cpu_base_addr);
313
314 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
315                 /* board GIC, secondary */
316                 gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
317                 gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
318                 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
319 #endif
320         } else {
321                 /* board GIC, primary */
322                 gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
323                 gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
324                 gic_cpu_init(0, gic_cpu_base_addr);
325         }
326 }
327
328 /*
329  * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
330  */
331 static void realview_eb11mp_fixup(void)
332 {
333         /* AMBA devices */
334         dmac_device.irq[0]      = IRQ_EB11MP_DMA;
335         uart0_device.irq[0]     = IRQ_EB11MP_UART0;
336         uart1_device.irq[0]     = IRQ_EB11MP_UART1;
337         uart2_device.irq[0]     = IRQ_EB11MP_UART2;
338         uart3_device.irq[0]     = IRQ_EB11MP_UART3;
339         clcd_device.irq[0]      = IRQ_EB11MP_CLCD;
340         wdog_device.irq[0]      = IRQ_EB11MP_WDOG;
341         gpio0_device.irq[0]     = IRQ_EB11MP_GPIO0;
342         gpio1_device.irq[0]     = IRQ_EB11MP_GPIO1;
343         gpio2_device.irq[0]     = IRQ_EB11MP_GPIO2;
344         rtc_device.irq[0]       = IRQ_EB11MP_RTC;
345         sci0_device.irq[0]      = IRQ_EB11MP_SCI;
346         ssp0_device.irq[0]      = IRQ_EB11MP_SSP;
347         aaci_device.irq[0]      = IRQ_EB11MP_AACI;
348         mmc0_device.irq[0]      = IRQ_EB11MP_MMCI0A;
349         mmc0_device.irq[1]      = IRQ_EB11MP_MMCI0B;
350         kmi0_device.irq[0]      = IRQ_EB11MP_KMI0;
351         kmi1_device.irq[0]      = IRQ_EB11MP_KMI1;
352
353         /* platform devices */
354         realview_eb_eth_resources[1].start      = IRQ_EB11MP_ETH;
355         realview_eb_eth_resources[1].end        = IRQ_EB11MP_ETH;
356         realview_eb_isp1761_resources[1].start  = IRQ_EB11MP_USB;
357         realview_eb_isp1761_resources[1].end    = IRQ_EB11MP_USB;
358 }
359
360 static void __init realview_eb_timer_init(void)
361 {
362         unsigned int timer_irq;
363
364         timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
365         timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
366         timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
367         timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
368
369         if (core_tile_eb11mp() || core_tile_a9mp()) {
370 #ifdef CONFIG_LOCAL_TIMERS
371                 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
372 #endif
373                 timer_irq = IRQ_EB11MP_TIMER0_1;
374         } else
375                 timer_irq = IRQ_EB_TIMER0_1;
376
377         realview_timer_init(timer_irq);
378 }
379
380 static struct sys_timer realview_eb_timer = {
381         .init           = realview_eb_timer_init,
382 };
383
384 static void __init realview_eb_init(void)
385 {
386         int i;
387
388         if (core_tile_eb11mp() || core_tile_a9mp()) {
389                 realview_eb11mp_fixup();
390
391 #ifdef CONFIG_CACHE_L2X0
392                 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
393                  * Bits:  .... ...0 0111 1001 0000 .... .... .... */
394                 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
395 #endif
396         }
397
398         realview_flash_register(&realview_eb_flash_resource, 1);
399         platform_device_register(&realview_i2c_device);
400         eth_device_register();
401         realview_usb_register(realview_eb_isp1761_resources);
402
403         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
404                 struct amba_device *d = amba_devs[i];
405                 amba_device_register(d, &iomem_resource);
406         }
407
408 #ifdef CONFIG_LEDS
409         leds_event = realview_leds_event;
410 #endif
411 }
412
413 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
414         /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
415         .phys_io        = REALVIEW_EB_UART0_BASE,
416         .io_pg_offst    = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
417         .boot_params    = PHYS_OFFSET + 0x00000100,
418         .fixup          = realview_fixup,
419         .map_io         = realview_eb_map_io,
420         .init_irq       = gic_init_irq,
421         .timer          = &realview_eb_timer,
422         .init_machine   = realview_eb_init,
423 MACHINE_END