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/device.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/smp_twd.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_PRIV_MEM_BASE),
95 .pfn = __phys_to_pfn(REALVIEW_EB11MP_PRIV_MEM_BASE),
96 .length = REALVIEW_EB11MP_PRIV_MEM_SIZE,
97 .type = MT_DEVICE,
98 }, {
99 .virtual = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
100 .pfn = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
101 .length = SZ_8K,
102 .type = MT_DEVICE,
103 }
104 };
105
realview_eb_map_io(void)106 static void __init realview_eb_map_io(void)
107 {
108 iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
109 if (core_tile_eb11mp() || core_tile_a9mp())
110 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
111 }
112
113 static struct pl061_platform_data gpio0_plat_data = {
114 .gpio_base = 0,
115 };
116
117 static struct pl061_platform_data gpio1_plat_data = {
118 .gpio_base = 8,
119 };
120
121 static struct pl061_platform_data gpio2_plat_data = {
122 .gpio_base = 16,
123 };
124
125 static struct pl022_ssp_controller ssp0_plat_data = {
126 .bus_id = 0,
127 .enable_dma = 0,
128 .num_chipselect = 1,
129 };
130
131 /*
132 * RealView EB AMBA devices
133 */
134
135 /*
136 * These devices are connected via the core APB bridge
137 */
138 #define GPIO2_IRQ { IRQ_EB_GPIO2 }
139 #define GPIO3_IRQ { IRQ_EB_GPIO3 }
140
141 #define AACI_IRQ { IRQ_EB_AACI }
142 #define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
143 #define KMI0_IRQ { IRQ_EB_KMI0 }
144 #define KMI1_IRQ { IRQ_EB_KMI1 }
145
146 /*
147 * These devices are connected directly to the multi-layer AHB switch
148 */
149 #define EB_SMC_IRQ { }
150 #define MPMC_IRQ { }
151 #define EB_CLCD_IRQ { IRQ_EB_CLCD }
152 #define DMAC_IRQ { IRQ_EB_DMA }
153
154 /*
155 * These devices are connected via the core APB bridge
156 */
157 #define SCTL_IRQ { }
158 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG }
159 #define EB_GPIO0_IRQ { IRQ_EB_GPIO0 }
160 #define GPIO1_IRQ { IRQ_EB_GPIO1 }
161 #define EB_RTC_IRQ { IRQ_EB_RTC }
162
163 /*
164 * These devices are connected via the DMA APB bridge
165 */
166 #define SCI_IRQ { IRQ_EB_SCI }
167 #define EB_UART0_IRQ { IRQ_EB_UART0 }
168 #define EB_UART1_IRQ { IRQ_EB_UART1 }
169 #define EB_UART2_IRQ { IRQ_EB_UART2 }
170 #define EB_UART3_IRQ { IRQ_EB_UART3 }
171 #define EB_SSP_IRQ { IRQ_EB_SSP }
172
173 /* FPGA Primecells */
174 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
175 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
176 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
177 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
178 APB_DEVICE(uart3, "fpga:uart3", EB_UART3, NULL);
179
180 /* DevChip Primecells */
181 AHB_DEVICE(smc, "dev:smc", EB_SMC, NULL);
182 AHB_DEVICE(clcd, "dev:clcd", EB_CLCD, &clcd_plat_data);
183 AHB_DEVICE(dmac, "dev:dmac", DMAC, NULL);
184 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
185 APB_DEVICE(wdog, "dev:wdog", EB_WATCHDOG, NULL);
186 APB_DEVICE(gpio0, "dev:gpio0", EB_GPIO0, &gpio0_plat_data);
187 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
188 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
189 APB_DEVICE(rtc, "dev:rtc", EB_RTC, NULL);
190 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
191 APB_DEVICE(uart0, "dev:uart0", EB_UART0, NULL);
192 APB_DEVICE(uart1, "dev:uart1", EB_UART1, NULL);
193 APB_DEVICE(uart2, "dev:uart2", EB_UART2, NULL);
194 APB_DEVICE(ssp0, "dev:ssp0", EB_SSP, &ssp0_plat_data);
195
196 static struct amba_device *amba_devs[] __initdata = {
197 &dmac_device,
198 &uart0_device,
199 &uart1_device,
200 &uart2_device,
201 &uart3_device,
202 &smc_device,
203 &clcd_device,
204 &sctl_device,
205 &wdog_device,
206 &gpio0_device,
207 &gpio1_device,
208 &gpio2_device,
209 &rtc_device,
210 &sci0_device,
211 &ssp0_device,
212 &aaci_device,
213 &mmc0_device,
214 &kmi0_device,
215 &kmi1_device,
216 };
217
218 /*
219 * RealView EB platform devices
220 */
221 static struct resource realview_eb_flash_resource = {
222 .start = REALVIEW_EB_FLASH_BASE,
223 .end = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
224 .flags = IORESOURCE_MEM,
225 };
226
227 static struct resource realview_eb_eth_resources[] = {
228 [0] = {
229 .start = REALVIEW_EB_ETH_BASE,
230 .end = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
231 .flags = IORESOURCE_MEM,
232 },
233 [1] = {
234 .start = IRQ_EB_ETH,
235 .end = IRQ_EB_ETH,
236 .flags = IORESOURCE_IRQ,
237 },
238 };
239
240 /*
241 * Detect and register the correct Ethernet device. RealView/EB rev D
242 * platforms use the newer SMSC LAN9118 Ethernet chip
243 */
eth_device_register(void)244 static int eth_device_register(void)
245 {
246 void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
247 const char *name = NULL;
248 u32 idrev;
249
250 if (!eth_addr)
251 return -ENOMEM;
252
253 idrev = readl(eth_addr + 0x50);
254 if ((idrev & 0xFFFF0000) != 0x01180000)
255 /* SMSC LAN9118 not present, use LAN91C111 instead */
256 name = "smc91x";
257
258 iounmap(eth_addr);
259 return realview_eth_register(name, realview_eb_eth_resources);
260 }
261
262 static struct resource realview_eb_isp1761_resources[] = {
263 [0] = {
264 .start = REALVIEW_EB_USB_BASE,
265 .end = REALVIEW_EB_USB_BASE + SZ_128K - 1,
266 .flags = IORESOURCE_MEM,
267 },
268 [1] = {
269 .start = IRQ_EB_USB,
270 .end = IRQ_EB_USB,
271 .flags = IORESOURCE_IRQ,
272 },
273 };
274
275 static struct resource pmu_resources[] = {
276 [0] = {
277 .start = IRQ_EB11MP_PMU_CPU0,
278 .end = IRQ_EB11MP_PMU_CPU0,
279 .flags = IORESOURCE_IRQ,
280 },
281 [1] = {
282 .start = IRQ_EB11MP_PMU_CPU1,
283 .end = IRQ_EB11MP_PMU_CPU1,
284 .flags = IORESOURCE_IRQ,
285 },
286 [2] = {
287 .start = IRQ_EB11MP_PMU_CPU2,
288 .end = IRQ_EB11MP_PMU_CPU2,
289 .flags = IORESOURCE_IRQ,
290 },
291 [3] = {
292 .start = IRQ_EB11MP_PMU_CPU3,
293 .end = IRQ_EB11MP_PMU_CPU3,
294 .flags = IORESOURCE_IRQ,
295 },
296 };
297
298 static struct platform_device pmu_device = {
299 .name = "arm-pmu",
300 .id = ARM_PMU_DEVICE_CPU,
301 .num_resources = ARRAY_SIZE(pmu_resources),
302 .resource = pmu_resources,
303 };
304
305 static struct resource char_lcd_resources[] = {
306 {
307 .start = REALVIEW_CHAR_LCD_BASE,
308 .end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
309 .flags = IORESOURCE_MEM,
310 },
311 {
312 .start = IRQ_EB_CHARLCD,
313 .end = IRQ_EB_CHARLCD,
314 .flags = IORESOURCE_IRQ,
315 },
316 };
317
318 static struct platform_device char_lcd_device = {
319 .name = "arm-charlcd",
320 .id = -1,
321 .num_resources = ARRAY_SIZE(char_lcd_resources),
322 .resource = char_lcd_resources,
323 };
324
gic_init_irq(void)325 static void __init gic_init_irq(void)
326 {
327 if (core_tile_eb11mp() || core_tile_a9mp()) {
328 unsigned int pldctrl;
329
330 /* new irq mode */
331 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
332 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
333 pldctrl |= 0x00800000;
334 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
335 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
336
337 /* core tile GIC, primary */
338 gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
339 __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
340
341 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
342 /* board GIC, secondary */
343 gic_init(1, 96, __io_address(REALVIEW_EB_GIC_DIST_BASE),
344 __io_address(REALVIEW_EB_GIC_CPU_BASE));
345 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
346 #endif
347 } else {
348 /* board GIC, primary */
349 gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
350 __io_address(REALVIEW_EB_GIC_CPU_BASE));
351 }
352 }
353
354 /*
355 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
356 */
realview_eb11mp_fixup(void)357 static void realview_eb11mp_fixup(void)
358 {
359 /* AMBA devices */
360 dmac_device.irq[0] = IRQ_EB11MP_DMA;
361 uart0_device.irq[0] = IRQ_EB11MP_UART0;
362 uart1_device.irq[0] = IRQ_EB11MP_UART1;
363 uart2_device.irq[0] = IRQ_EB11MP_UART2;
364 uart3_device.irq[0] = IRQ_EB11MP_UART3;
365 clcd_device.irq[0] = IRQ_EB11MP_CLCD;
366 wdog_device.irq[0] = IRQ_EB11MP_WDOG;
367 gpio0_device.irq[0] = IRQ_EB11MP_GPIO0;
368 gpio1_device.irq[0] = IRQ_EB11MP_GPIO1;
369 gpio2_device.irq[0] = IRQ_EB11MP_GPIO2;
370 rtc_device.irq[0] = IRQ_EB11MP_RTC;
371 sci0_device.irq[0] = IRQ_EB11MP_SCI;
372 ssp0_device.irq[0] = IRQ_EB11MP_SSP;
373 aaci_device.irq[0] = IRQ_EB11MP_AACI;
374 mmc0_device.irq[0] = IRQ_EB11MP_MMCI0A;
375 mmc0_device.irq[1] = IRQ_EB11MP_MMCI0B;
376 kmi0_device.irq[0] = IRQ_EB11MP_KMI0;
377 kmi1_device.irq[0] = IRQ_EB11MP_KMI1;
378
379 /* platform devices */
380 realview_eb_eth_resources[1].start = IRQ_EB11MP_ETH;
381 realview_eb_eth_resources[1].end = IRQ_EB11MP_ETH;
382 realview_eb_isp1761_resources[1].start = IRQ_EB11MP_USB;
383 realview_eb_isp1761_resources[1].end = IRQ_EB11MP_USB;
384 }
385
386 #ifdef CONFIG_HAVE_ARM_TWD
387 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
388 REALVIEW_EB11MP_TWD_BASE,
389 IRQ_LOCALTIMER);
390
realview_eb_twd_init(void)391 static void __init realview_eb_twd_init(void)
392 {
393 if (core_tile_eb11mp() || core_tile_a9mp()) {
394 int err = twd_local_timer_register(&twd_local_timer);
395 if (err)
396 pr_err("twd_local_timer_register failed %d\n", err);
397 }
398 }
399 #else
400 #define realview_eb_twd_init() do { } while(0)
401 #endif
402
realview_eb_timer_init(void)403 static void __init realview_eb_timer_init(void)
404 {
405 unsigned int timer_irq;
406
407 timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
408 timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
409 timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
410 timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
411
412 if (core_tile_eb11mp() || core_tile_a9mp())
413 timer_irq = IRQ_EB11MP_TIMER0_1;
414 else
415 timer_irq = IRQ_EB_TIMER0_1;
416
417 realview_timer_init(timer_irq);
418 realview_eb_twd_init();
419 }
420
421 static struct sys_timer realview_eb_timer = {
422 .init = realview_eb_timer_init,
423 };
424
realview_eb_restart(char mode,const char * cmd)425 static void realview_eb_restart(char mode, const char *cmd)
426 {
427 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
428 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
429
430 /*
431 * To reset, we hit the on-board reset register
432 * in the system FPGA
433 */
434 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
435 if (core_tile_eb11mp())
436 __raw_writel(0x0008, reset_ctrl);
437 dsb();
438 }
439
realview_eb_init(void)440 static void __init realview_eb_init(void)
441 {
442 int i;
443
444 if (core_tile_eb11mp() || core_tile_a9mp()) {
445 realview_eb11mp_fixup();
446
447 #ifdef CONFIG_CACHE_L2X0
448 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
449 * Bits: .... ...0 0111 1001 0000 .... .... .... */
450 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
451 #endif
452 platform_device_register(&pmu_device);
453 }
454
455 realview_flash_register(&realview_eb_flash_resource, 1);
456 platform_device_register(&realview_i2c_device);
457 platform_device_register(&char_lcd_device);
458 eth_device_register();
459 realview_usb_register(realview_eb_isp1761_resources);
460
461 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
462 struct amba_device *d = amba_devs[i];
463 amba_device_register(d, &iomem_resource);
464 }
465
466 #ifdef CONFIG_LEDS
467 leds_event = realview_leds_event;
468 #endif
469 }
470
471 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
472 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
473 .atag_offset = 0x100,
474 .fixup = realview_fixup,
475 .map_io = realview_eb_map_io,
476 .init_early = realview_init_early,
477 .init_irq = gic_init_irq,
478 .timer = &realview_eb_timer,
479 .handle_irq = gic_handle_irq,
480 .init_machine = realview_eb_init,
481 #ifdef CONFIG_ZONE_DMA
482 .dma_zone_size = SZ_256M,
483 #endif
484 .restart = realview_eb_restart,
485 MACHINE_END
486