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/device.h>
24 #include <linux/amba/bus.h>
25 #include <linux/amba/pl061.h>
26 #include <linux/amba/mmci.h>
27 #include <linux/amba/pl022.h>
28 #include <linux/io.h>
29
30 #include <asm/irq.h>
31 #include <asm/leds.h>
32 #include <asm/mach-types.h>
33 #include <asm/pmu.h>
34 #include <asm/smp_twd.h>
35 #include <asm/pgtable.h>
36 #include <asm/hardware/gic.h>
37 #include <asm/hardware/cache-l2x0.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/map.h>
41 #include <asm/mach/time.h>
42
43 #include <mach/hardware.h>
44 #include <mach/board-pbx.h>
45 #include <mach/irqs.h>
46
47 #include "core.h"
48
49 static struct map_desc realview_pbx_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_PBX_GIC_CPU_BASE),
57 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
58 .length = SZ_4K,
59 .type = MT_DEVICE,
60 }, {
61 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
62 .pfn = __phys_to_pfn(REALVIEW_PBX_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_PBX_TIMER0_1_BASE),
72 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
73 .length = SZ_4K,
74 .type = MT_DEVICE,
75 }, {
76 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
77 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
78 .length = SZ_4K,
79 .type = MT_DEVICE,
80 },
81 #ifdef CONFIG_PCI
82 {
83 .virtual = PCIX_UNIT_BASE,
84 .pfn = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
85 .length = REALVIEW_PBX_PCI_BASE_SIZE,
86 .type = MT_DEVICE,
87 },
88 #endif
89 #ifdef CONFIG_DEBUG_LL
90 {
91 .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
92 .pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
93 .length = SZ_4K,
94 .type = MT_DEVICE,
95 },
96 #endif
97 };
98
99 static struct map_desc realview_local_io_desc[] __initdata = {
100 {
101 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
102 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
103 .length = SZ_4K,
104 .type = MT_DEVICE,
105 }, {
106 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
107 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
108 .length = SZ_4K,
109 .type = MT_DEVICE,
110 }, {
111 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
112 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
113 .length = SZ_8K,
114 .type = MT_DEVICE,
115 }
116 };
117
realview_pbx_map_io(void)118 static void __init realview_pbx_map_io(void)
119 {
120 iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
121 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
122 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
123 }
124
125 static struct pl061_platform_data gpio0_plat_data = {
126 .gpio_base = 0,
127 };
128
129 static struct pl061_platform_data gpio1_plat_data = {
130 .gpio_base = 8,
131 };
132
133 static struct pl061_platform_data gpio2_plat_data = {
134 .gpio_base = 16,
135 };
136
137 static struct pl022_ssp_controller ssp0_plat_data = {
138 .bus_id = 0,
139 .enable_dma = 0,
140 .num_chipselect = 1,
141 };
142
143 /*
144 * RealView PBXCore AMBA devices
145 */
146
147 #define GPIO2_IRQ { IRQ_PBX_GPIO2 }
148 #define GPIO3_IRQ { IRQ_PBX_GPIO3 }
149 #define AACI_IRQ { IRQ_PBX_AACI }
150 #define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
151 #define KMI0_IRQ { IRQ_PBX_KMI0 }
152 #define KMI1_IRQ { IRQ_PBX_KMI1 }
153 #define PBX_SMC_IRQ { }
154 #define MPMC_IRQ { }
155 #define PBX_CLCD_IRQ { IRQ_PBX_CLCD }
156 #define DMAC_IRQ { IRQ_PBX_DMAC }
157 #define SCTL_IRQ { }
158 #define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG }
159 #define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 }
160 #define GPIO1_IRQ { IRQ_PBX_GPIO1 }
161 #define PBX_RTC_IRQ { IRQ_PBX_RTC }
162 #define SCI_IRQ { IRQ_PBX_SCI }
163 #define PBX_UART0_IRQ { IRQ_PBX_UART0 }
164 #define PBX_UART1_IRQ { IRQ_PBX_UART1 }
165 #define PBX_UART2_IRQ { IRQ_PBX_UART2 }
166 #define PBX_UART3_IRQ { IRQ_PBX_UART3 }
167 #define PBX_SSP_IRQ { IRQ_PBX_SSP }
168
169 /* FPGA Primecells */
170 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
171 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
172 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
173 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
174 APB_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL);
175
176 /* DevChip Primecells */
177 AHB_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
178 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
179 APB_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
180 APB_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data);
181 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
182 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
183 APB_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL);
184 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
185 APB_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
186 APB_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
187 APB_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
188 APB_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data);
189
190 /* Primecells on the NEC ISSP chip */
191 AHB_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
192 AHB_DEVICE(dmac, "issp:dmac", DMAC, NULL);
193
194 static struct amba_device *amba_devs[] __initdata = {
195 &dmac_device,
196 &uart0_device,
197 &uart1_device,
198 &uart2_device,
199 &uart3_device,
200 &smc_device,
201 &clcd_device,
202 &sctl_device,
203 &wdog_device,
204 &gpio0_device,
205 &gpio1_device,
206 &gpio2_device,
207 &rtc_device,
208 &sci0_device,
209 &ssp0_device,
210 &aaci_device,
211 &mmc0_device,
212 &kmi0_device,
213 &kmi1_device,
214 };
215
216 /*
217 * RealView PB-X platform devices
218 */
219 static struct resource realview_pbx_flash_resources[] = {
220 [0] = {
221 .start = REALVIEW_PBX_FLASH0_BASE,
222 .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
223 .flags = IORESOURCE_MEM,
224 },
225 [1] = {
226 .start = REALVIEW_PBX_FLASH1_BASE,
227 .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
228 .flags = IORESOURCE_MEM,
229 },
230 };
231
232 static struct resource realview_pbx_smsc911x_resources[] = {
233 [0] = {
234 .start = REALVIEW_PBX_ETH_BASE,
235 .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
236 .flags = IORESOURCE_MEM,
237 },
238 [1] = {
239 .start = IRQ_PBX_ETH,
240 .end = IRQ_PBX_ETH,
241 .flags = IORESOURCE_IRQ,
242 },
243 };
244
245 static struct resource realview_pbx_isp1761_resources[] = {
246 [0] = {
247 .start = REALVIEW_PBX_USB_BASE,
248 .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
249 .flags = IORESOURCE_MEM,
250 },
251 [1] = {
252 .start = IRQ_PBX_USB,
253 .end = IRQ_PBX_USB,
254 .flags = IORESOURCE_IRQ,
255 },
256 };
257
258 static struct resource pmu_resources[] = {
259 [0] = {
260 .start = IRQ_PBX_PMU_CPU0,
261 .end = IRQ_PBX_PMU_CPU0,
262 .flags = IORESOURCE_IRQ,
263 },
264 [1] = {
265 .start = IRQ_PBX_PMU_CPU1,
266 .end = IRQ_PBX_PMU_CPU1,
267 .flags = IORESOURCE_IRQ,
268 },
269 [2] = {
270 .start = IRQ_PBX_PMU_CPU2,
271 .end = IRQ_PBX_PMU_CPU2,
272 .flags = IORESOURCE_IRQ,
273 },
274 [3] = {
275 .start = IRQ_PBX_PMU_CPU3,
276 .end = IRQ_PBX_PMU_CPU3,
277 .flags = IORESOURCE_IRQ,
278 },
279 };
280
281 static struct platform_device pmu_device = {
282 .name = "arm-pmu",
283 .id = ARM_PMU_DEVICE_CPU,
284 .num_resources = ARRAY_SIZE(pmu_resources),
285 .resource = pmu_resources,
286 };
287
gic_init_irq(void)288 static void __init gic_init_irq(void)
289 {
290 /* ARM PBX on-board GIC */
291 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
292 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
293 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
294 } else {
295 gic_init(0, IRQ_PBX_GIC_START,
296 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
297 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
298 }
299 }
300
301 #ifdef CONFIG_HAVE_ARM_TWD
302 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
303 REALVIEW_PBX_TILE_TWD_BASE,
304 IRQ_LOCALTIMER);
305
realview_pbx_twd_init(void)306 static void __init realview_pbx_twd_init(void)
307 {
308 int err = twd_local_timer_register(&twd_local_timer);
309 if (err)
310 pr_err("twd_local_timer_register failed %d\n", err);
311 }
312 #else
313 #define realview_pbx_twd_init() do { } while(0)
314 #endif
315
realview_pbx_timer_init(void)316 static void __init realview_pbx_timer_init(void)
317 {
318 timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
319 timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
320 timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
321 timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
322
323 realview_timer_init(IRQ_PBX_TIMER0_1);
324 realview_pbx_twd_init();
325 }
326
327 static struct sys_timer realview_pbx_timer = {
328 .init = realview_pbx_timer_init,
329 };
330
realview_pbx_fixup(struct tag * tags,char ** from,struct meminfo * meminfo)331 static void realview_pbx_fixup(struct tag *tags, char **from,
332 struct meminfo *meminfo)
333 {
334 #ifdef CONFIG_SPARSEMEM
335 /*
336 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
337 * asm/mach/memory.h for more information).
338 */
339 meminfo->bank[0].start = 0;
340 meminfo->bank[0].size = SZ_256M;
341 meminfo->bank[1].start = 0x20000000;
342 meminfo->bank[1].size = SZ_512M;
343 meminfo->bank[2].start = 0x80000000;
344 meminfo->bank[2].size = SZ_256M;
345 meminfo->nr_banks = 3;
346 #else
347 realview_fixup(tags, from, meminfo);
348 #endif
349 }
350
realview_pbx_restart(char mode,const char * cmd)351 static void realview_pbx_restart(char mode, const char *cmd)
352 {
353 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
354 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
355
356 /*
357 * To reset, we hit the on-board reset register
358 * in the system FPGA
359 */
360 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
361 __raw_writel(0x00F0, reset_ctrl);
362 __raw_writel(0x00F4, reset_ctrl);
363 dsb();
364 }
365
realview_pbx_init(void)366 static void __init realview_pbx_init(void)
367 {
368 int i;
369
370 #ifdef CONFIG_CACHE_L2X0
371 if (core_tile_pbxa9mp()) {
372 void __iomem *l2x0_base =
373 __io_address(REALVIEW_PBX_TILE_L220_BASE);
374
375 /* set RAM latencies to 1 cycle for eASIC */
376 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
377 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
378
379 /* 16KB way size, 8-way associativity, parity disabled
380 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
381 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
382 platform_device_register(&pmu_device);
383 }
384 #endif
385
386 realview_flash_register(realview_pbx_flash_resources,
387 ARRAY_SIZE(realview_pbx_flash_resources));
388 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
389 platform_device_register(&realview_i2c_device);
390 platform_device_register(&realview_cf_device);
391 realview_usb_register(realview_pbx_isp1761_resources);
392
393 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
394 struct amba_device *d = amba_devs[i];
395 amba_device_register(d, &iomem_resource);
396 }
397
398 #ifdef CONFIG_LEDS
399 leds_event = realview_leds_event;
400 #endif
401 }
402
403 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
404 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
405 .atag_offset = 0x100,
406 .fixup = realview_pbx_fixup,
407 .map_io = realview_pbx_map_io,
408 .init_early = realview_init_early,
409 .init_irq = gic_init_irq,
410 .timer = &realview_pbx_timer,
411 .handle_irq = gic_handle_irq,
412 .init_machine = realview_pbx_init,
413 #ifdef CONFIG_ZONE_DMA
414 .dma_zone_size = SZ_256M,
415 #endif
416 .restart = realview_pbx_restart,
417 MACHINE_END
418