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/io.h>
27
28 #include <mach/hardware.h>
29 #include <asm/irq.h>
30 #include <asm/leds.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware/gic.h>
33 #include <asm/hardware/icst307.h>
34 #include <asm/hardware/cache-l2x0.h>
35
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/mmc.h>
39 #include <asm/mach/time.h>
40
41 #include <mach/board-eb.h>
42 #include <mach/irqs.h>
43
44 #include "core.h"
45 #include "clock.h"
46
47 static struct map_desc realview_eb_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_EB_GIC_CPU_BASE),
55 .pfn = __phys_to_pfn(REALVIEW_EB_GIC_CPU_BASE),
56 .length = SZ_4K,
57 .type = MT_DEVICE,
58 }, {
59 .virtual = IO_ADDRESS(REALVIEW_EB_GIC_DIST_BASE),
60 .pfn = __phys_to_pfn(REALVIEW_EB_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_EB_TIMER0_1_BASE),
70 .pfn = __phys_to_pfn(REALVIEW_EB_TIMER0_1_BASE),
71 .length = SZ_4K,
72 .type = MT_DEVICE,
73 }, {
74 .virtual = IO_ADDRESS(REALVIEW_EB_TIMER2_3_BASE),
75 .pfn = __phys_to_pfn(REALVIEW_EB_TIMER2_3_BASE),
76 .length = SZ_4K,
77 .type = MT_DEVICE,
78 },
79 #ifdef CONFIG_DEBUG_LL
80 {
81 .virtual = IO_ADDRESS(REALVIEW_EB_UART0_BASE),
82 .pfn = __phys_to_pfn(REALVIEW_EB_UART0_BASE),
83 .length = SZ_4K,
84 .type = MT_DEVICE,
85 }
86 #endif
87 };
88
89 static struct map_desc realview_eb11mp_io_desc[] __initdata = {
90 {
91 .virtual = IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE),
92 .pfn = __phys_to_pfn(REALVIEW_EB11MP_GIC_CPU_BASE),
93 .length = SZ_4K,
94 .type = MT_DEVICE,
95 }, {
96 .virtual = IO_ADDRESS(REALVIEW_EB11MP_GIC_DIST_BASE),
97 .pfn = __phys_to_pfn(REALVIEW_EB11MP_GIC_DIST_BASE),
98 .length = SZ_4K,
99 .type = MT_DEVICE,
100 }, {
101 .virtual = IO_ADDRESS(REALVIEW_EB11MP_L220_BASE),
102 .pfn = __phys_to_pfn(REALVIEW_EB11MP_L220_BASE),
103 .length = SZ_8K,
104 .type = MT_DEVICE,
105 }
106 };
107
realview_eb_map_io(void)108 static void __init realview_eb_map_io(void)
109 {
110 iotable_init(realview_eb_io_desc, ARRAY_SIZE(realview_eb_io_desc));
111 if (core_tile_eb11mp() || core_tile_a9mp())
112 iotable_init(realview_eb11mp_io_desc, ARRAY_SIZE(realview_eb11mp_io_desc));
113 }
114
115 /*
116 * RealView EB AMBA devices
117 */
118
119 /*
120 * These devices are connected via the core APB bridge
121 */
122 #define GPIO2_IRQ { IRQ_EB_GPIO2, NO_IRQ }
123 #define GPIO2_DMA { 0, 0 }
124 #define GPIO3_IRQ { IRQ_EB_GPIO3, NO_IRQ }
125 #define GPIO3_DMA { 0, 0 }
126
127 #define AACI_IRQ { IRQ_EB_AACI, NO_IRQ }
128 #define AACI_DMA { 0x80, 0x81 }
129 #define MMCI0_IRQ { IRQ_EB_MMCI0A, IRQ_EB_MMCI0B }
130 #define MMCI0_DMA { 0x84, 0 }
131 #define KMI0_IRQ { IRQ_EB_KMI0, NO_IRQ }
132 #define KMI0_DMA { 0, 0 }
133 #define KMI1_IRQ { IRQ_EB_KMI1, NO_IRQ }
134 #define KMI1_DMA { 0, 0 }
135
136 /*
137 * These devices are connected directly to the multi-layer AHB switch
138 */
139 #define EB_SMC_IRQ { NO_IRQ, NO_IRQ }
140 #define EB_SMC_DMA { 0, 0 }
141 #define MPMC_IRQ { NO_IRQ, NO_IRQ }
142 #define MPMC_DMA { 0, 0 }
143 #define EB_CLCD_IRQ { IRQ_EB_CLCD, NO_IRQ }
144 #define EB_CLCD_DMA { 0, 0 }
145 #define DMAC_IRQ { IRQ_EB_DMA, NO_IRQ }
146 #define DMAC_DMA { 0, 0 }
147
148 /*
149 * These devices are connected via the core APB bridge
150 */
151 #define SCTL_IRQ { NO_IRQ, NO_IRQ }
152 #define SCTL_DMA { 0, 0 }
153 #define EB_WATCHDOG_IRQ { IRQ_EB_WDOG, NO_IRQ }
154 #define EB_WATCHDOG_DMA { 0, 0 }
155 #define EB_GPIO0_IRQ { IRQ_EB_GPIO0, NO_IRQ }
156 #define EB_GPIO0_DMA { 0, 0 }
157 #define GPIO1_IRQ { IRQ_EB_GPIO1, NO_IRQ }
158 #define GPIO1_DMA { 0, 0 }
159 #define EB_RTC_IRQ { IRQ_EB_RTC, NO_IRQ }
160 #define EB_RTC_DMA { 0, 0 }
161
162 /*
163 * These devices are connected via the DMA APB bridge
164 */
165 #define SCI_IRQ { IRQ_EB_SCI, NO_IRQ }
166 #define SCI_DMA { 7, 6 }
167 #define EB_UART0_IRQ { IRQ_EB_UART0, NO_IRQ }
168 #define EB_UART0_DMA { 15, 14 }
169 #define EB_UART1_IRQ { IRQ_EB_UART1, NO_IRQ }
170 #define EB_UART1_DMA { 13, 12 }
171 #define EB_UART2_IRQ { IRQ_EB_UART2, NO_IRQ }
172 #define EB_UART2_DMA { 11, 10 }
173 #define EB_UART3_IRQ { IRQ_EB_UART3, NO_IRQ }
174 #define EB_UART3_DMA { 0x86, 0x87 }
175 #define EB_SSP_IRQ { IRQ_EB_SSP, NO_IRQ }
176 #define EB_SSP_DMA { 9, 8 }
177
178 /* FPGA Primecells */
179 AMBA_DEVICE(aaci, "fpga:04", AACI, NULL);
180 AMBA_DEVICE(mmc0, "fpga:05", MMCI0, &realview_mmc0_plat_data);
181 AMBA_DEVICE(kmi0, "fpga:06", KMI0, NULL);
182 AMBA_DEVICE(kmi1, "fpga:07", KMI1, NULL);
183 AMBA_DEVICE(uart3, "fpga:09", EB_UART3, NULL);
184
185 /* DevChip Primecells */
186 AMBA_DEVICE(smc, "dev:00", EB_SMC, NULL);
187 AMBA_DEVICE(clcd, "dev:20", EB_CLCD, &clcd_plat_data);
188 AMBA_DEVICE(dmac, "dev:30", DMAC, NULL);
189 AMBA_DEVICE(sctl, "dev:e0", SCTL, NULL);
190 AMBA_DEVICE(wdog, "dev:e1", EB_WATCHDOG, NULL);
191 AMBA_DEVICE(gpio0, "dev:e4", EB_GPIO0, NULL);
192 AMBA_DEVICE(gpio1, "dev:e5", GPIO1, NULL);
193 AMBA_DEVICE(gpio2, "dev:e6", GPIO2, NULL);
194 AMBA_DEVICE(rtc, "dev:e8", EB_RTC, NULL);
195 AMBA_DEVICE(sci0, "dev:f0", SCI, NULL);
196 AMBA_DEVICE(uart0, "dev:f1", EB_UART0, NULL);
197 AMBA_DEVICE(uart1, "dev:f2", EB_UART1, NULL);
198 AMBA_DEVICE(uart2, "dev:f3", EB_UART2, NULL);
199 AMBA_DEVICE(ssp0, "dev:f4", EB_SSP, NULL);
200
201 static struct amba_device *amba_devs[] __initdata = {
202 &dmac_device,
203 &uart0_device,
204 &uart1_device,
205 &uart2_device,
206 &uart3_device,
207 &smc_device,
208 &clcd_device,
209 &sctl_device,
210 &wdog_device,
211 &gpio0_device,
212 &gpio1_device,
213 &gpio2_device,
214 &rtc_device,
215 &sci0_device,
216 &ssp0_device,
217 &aaci_device,
218 &mmc0_device,
219 &kmi0_device,
220 &kmi1_device,
221 };
222
223 /*
224 * RealView EB platform devices
225 */
226 static struct resource realview_eb_flash_resource = {
227 .start = REALVIEW_EB_FLASH_BASE,
228 .end = REALVIEW_EB_FLASH_BASE + REALVIEW_EB_FLASH_SIZE - 1,
229 .flags = IORESOURCE_MEM,
230 };
231
232 static struct resource realview_eb_eth_resources[] = {
233 [0] = {
234 .start = REALVIEW_EB_ETH_BASE,
235 .end = REALVIEW_EB_ETH_BASE + SZ_64K - 1,
236 .flags = IORESOURCE_MEM,
237 },
238 [1] = {
239 .start = IRQ_EB_ETH,
240 .end = IRQ_EB_ETH,
241 .flags = IORESOURCE_IRQ,
242 },
243 };
244
245 /*
246 * Detect and register the correct Ethernet device. RealView/EB rev D
247 * platforms use the newer SMSC LAN9118 Ethernet chip
248 */
eth_device_register(void)249 static int eth_device_register(void)
250 {
251 void __iomem *eth_addr = ioremap(REALVIEW_EB_ETH_BASE, SZ_4K);
252 const char *name = NULL;
253 u32 idrev;
254
255 if (!eth_addr)
256 return -ENOMEM;
257
258 idrev = readl(eth_addr + 0x50);
259 if ((idrev & 0xFFFF0000) != 0x01180000)
260 /* SMSC LAN9118 not present, use LAN91C111 instead */
261 name = "smc91x";
262
263 iounmap(eth_addr);
264 return realview_eth_register(name, realview_eb_eth_resources);
265 }
266
gic_init_irq(void)267 static void __init gic_init_irq(void)
268 {
269 if (core_tile_eb11mp() || core_tile_a9mp()) {
270 unsigned int pldctrl;
271
272 /* new irq mode */
273 writel(0x0000a05f, __io_address(REALVIEW_SYS_LOCK));
274 pldctrl = readl(__io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
275 pldctrl |= 0x00800000;
276 writel(pldctrl, __io_address(REALVIEW_SYS_BASE) + REALVIEW_EB11MP_SYS_PLD_CTRL1);
277 writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
278
279 /* core tile GIC, primary */
280 gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
281 gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
282 gic_cpu_init(0, gic_cpu_base_addr);
283
284 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
285 /* board GIC, secondary */
286 gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
287 gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
288 gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
289 #endif
290 } else {
291 /* board GIC, primary */
292 gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
293 gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
294 gic_cpu_init(0, gic_cpu_base_addr);
295 }
296 }
297
298 /*
299 * Fix up the IRQ numbers for the RealView EB/ARM11MPCore tile
300 */
realview_eb11mp_fixup(void)301 static void realview_eb11mp_fixup(void)
302 {
303 /* AMBA devices */
304 dmac_device.irq[0] = IRQ_EB11MP_DMA;
305 uart0_device.irq[0] = IRQ_EB11MP_UART0;
306 uart1_device.irq[0] = IRQ_EB11MP_UART1;
307 uart2_device.irq[0] = IRQ_EB11MP_UART2;
308 uart3_device.irq[0] = IRQ_EB11MP_UART3;
309 clcd_device.irq[0] = IRQ_EB11MP_CLCD;
310 wdog_device.irq[0] = IRQ_EB11MP_WDOG;
311 gpio0_device.irq[0] = IRQ_EB11MP_GPIO0;
312 gpio1_device.irq[0] = IRQ_EB11MP_GPIO1;
313 gpio2_device.irq[0] = IRQ_EB11MP_GPIO2;
314 rtc_device.irq[0] = IRQ_EB11MP_RTC;
315 sci0_device.irq[0] = IRQ_EB11MP_SCI;
316 ssp0_device.irq[0] = IRQ_EB11MP_SSP;
317 aaci_device.irq[0] = IRQ_EB11MP_AACI;
318 mmc0_device.irq[0] = IRQ_EB11MP_MMCI0A;
319 mmc0_device.irq[1] = IRQ_EB11MP_MMCI0B;
320 kmi0_device.irq[0] = IRQ_EB11MP_KMI0;
321 kmi1_device.irq[0] = IRQ_EB11MP_KMI1;
322
323 /* platform devices */
324 realview_eb_eth_resources[1].start = IRQ_EB11MP_ETH;
325 realview_eb_eth_resources[1].end = IRQ_EB11MP_ETH;
326 }
327
realview_eb_timer_init(void)328 static void __init realview_eb_timer_init(void)
329 {
330 unsigned int timer_irq;
331
332 timer0_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE);
333 timer1_va_base = __io_address(REALVIEW_EB_TIMER0_1_BASE) + 0x20;
334 timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE);
335 timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20;
336
337 if (core_tile_eb11mp() || core_tile_a9mp()) {
338 #ifdef CONFIG_LOCAL_TIMERS
339 twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE);
340 #endif
341 timer_irq = IRQ_EB11MP_TIMER0_1;
342 } else
343 timer_irq = IRQ_EB_TIMER0_1;
344
345 realview_timer_init(timer_irq);
346 }
347
348 static struct sys_timer realview_eb_timer = {
349 .init = realview_eb_timer_init,
350 };
351
realview_eb_init(void)352 static void __init realview_eb_init(void)
353 {
354 int i;
355
356 if (core_tile_eb11mp() || core_tile_a9mp()) {
357 realview_eb11mp_fixup();
358
359 #ifdef CONFIG_CACHE_L2X0
360 /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled
361 * Bits: .... ...0 0111 1001 0000 .... .... .... */
362 l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff);
363 #endif
364 }
365
366 realview_flash_register(&realview_eb_flash_resource, 1);
367 platform_device_register(&realview_i2c_device);
368 eth_device_register();
369
370 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
371 struct amba_device *d = amba_devs[i];
372 amba_device_register(d, &iomem_resource);
373 }
374
375 #ifdef CONFIG_LEDS
376 leds_event = realview_leds_event;
377 #endif
378 }
379
380 MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
381 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
382 .phys_io = REALVIEW_EB_UART0_BASE,
383 .io_pg_offst = (IO_ADDRESS(REALVIEW_EB_UART0_BASE) >> 18) & 0xfffc,
384 .boot_params = PHYS_OFFSET + 0x00000100,
385 .map_io = realview_eb_map_io,
386 .init_irq = gic_init_irq,
387 .timer = &realview_eb_timer,
388 .init_machine = realview_eb_init,
389 MACHINE_END
390