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 #include <linux/irqchip/arm-gic.h>
30 #include <linux/platform_data/clk-realview.h>
31 #include <linux/reboot.h>
32 #include <linux/memblock.h>
33
34 #include <asm/irq.h>
35 #include <asm/mach-types.h>
36 #include <asm/smp_twd.h>
37 #include <asm/pgtable.h>
38 #include <asm/hardware/cache-l2x0.h>
39
40 #include <asm/mach/arch.h>
41 #include <asm/mach/map.h>
42 #include <asm/mach/time.h>
43
44 #include <mach/hardware.h>
45 #include <mach/board-pbx.h>
46 #include <mach/irqs.h>
47
48 #include "core.h"
49
50 static struct map_desc realview_pbx_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_PBX_GIC_CPU_BASE),
58 .pfn = __phys_to_pfn(REALVIEW_PBX_GIC_CPU_BASE),
59 .length = SZ_4K,
60 .type = MT_DEVICE,
61 }, {
62 .virtual = IO_ADDRESS(REALVIEW_PBX_GIC_DIST_BASE),
63 .pfn = __phys_to_pfn(REALVIEW_PBX_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_PBX_TIMER0_1_BASE),
73 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER0_1_BASE),
74 .length = SZ_4K,
75 .type = MT_DEVICE,
76 }, {
77 .virtual = IO_ADDRESS(REALVIEW_PBX_TIMER2_3_BASE),
78 .pfn = __phys_to_pfn(REALVIEW_PBX_TIMER2_3_BASE),
79 .length = SZ_4K,
80 .type = MT_DEVICE,
81 },
82 #ifdef CONFIG_PCI
83 {
84 .virtual = PCIX_UNIT_BASE,
85 .pfn = __phys_to_pfn(REALVIEW_PBX_PCI_BASE),
86 .length = REALVIEW_PBX_PCI_BASE_SIZE,
87 .type = MT_DEVICE,
88 },
89 #endif
90 #ifdef CONFIG_DEBUG_LL
91 {
92 .virtual = IO_ADDRESS(REALVIEW_PBX_UART0_BASE),
93 .pfn = __phys_to_pfn(REALVIEW_PBX_UART0_BASE),
94 .length = SZ_4K,
95 .type = MT_DEVICE,
96 },
97 #endif
98 };
99
100 static struct map_desc realview_local_io_desc[] __initdata = {
101 {
102 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_SCU_BASE),
103 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_SCU_BASE),
104 .length = SZ_4K,
105 .type = MT_DEVICE,
106 }, {
107 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_DIST_BASE),
108 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_DIST_BASE),
109 .length = SZ_4K,
110 .type = MT_DEVICE,
111 }, {
112 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_L220_BASE),
113 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_L220_BASE),
114 .length = SZ_8K,
115 .type = MT_DEVICE,
116 }
117 };
118
realview_pbx_map_io(void)119 static void __init realview_pbx_map_io(void)
120 {
121 iotable_init(realview_pbx_io_desc, ARRAY_SIZE(realview_pbx_io_desc));
122 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
123 iotable_init(realview_local_io_desc, ARRAY_SIZE(realview_local_io_desc));
124 }
125
126 static struct pl061_platform_data gpio0_plat_data = {
127 .gpio_base = 0,
128 };
129
130 static struct pl061_platform_data gpio1_plat_data = {
131 .gpio_base = 8,
132 };
133
134 static struct pl061_platform_data gpio2_plat_data = {
135 .gpio_base = 16,
136 };
137
138 static struct pl022_ssp_controller ssp0_plat_data = {
139 .bus_id = 0,
140 .enable_dma = 0,
141 .num_chipselect = 1,
142 };
143
144 /*
145 * RealView PBXCore AMBA devices
146 */
147
148 #define GPIO2_IRQ { IRQ_PBX_GPIO2 }
149 #define GPIO3_IRQ { IRQ_PBX_GPIO3 }
150 #define AACI_IRQ { IRQ_PBX_AACI }
151 #define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
152 #define KMI0_IRQ { IRQ_PBX_KMI0 }
153 #define KMI1_IRQ { IRQ_PBX_KMI1 }
154 #define PBX_SMC_IRQ { }
155 #define MPMC_IRQ { }
156 #define PBX_CLCD_IRQ { IRQ_PBX_CLCD }
157 #define DMAC_IRQ { IRQ_PBX_DMAC }
158 #define SCTL_IRQ { }
159 #define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG }
160 #define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0 }
161 #define GPIO1_IRQ { IRQ_PBX_GPIO1 }
162 #define PBX_RTC_IRQ { IRQ_PBX_RTC }
163 #define SCI_IRQ { IRQ_PBX_SCI }
164 #define PBX_UART0_IRQ { IRQ_PBX_UART0 }
165 #define PBX_UART1_IRQ { IRQ_PBX_UART1 }
166 #define PBX_UART2_IRQ { IRQ_PBX_UART2 }
167 #define PBX_UART3_IRQ { IRQ_PBX_UART3 }
168 #define PBX_SSP_IRQ { IRQ_PBX_SSP }
169
170 /* FPGA Primecells */
171 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
172 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
173 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
174 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
175 APB_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL);
176
177 /* DevChip Primecells */
178 AHB_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
179 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
180 APB_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
181 APB_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data);
182 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
183 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
184 APB_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL);
185 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
186 APB_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
187 APB_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
188 APB_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
189 APB_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data);
190
191 /* Primecells on the NEC ISSP chip */
192 AHB_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
193 AHB_DEVICE(dmac, "issp:dmac", DMAC, NULL);
194
195 static struct amba_device *amba_devs[] __initdata = {
196 &dmac_device,
197 &uart0_device,
198 &uart1_device,
199 &uart2_device,
200 &uart3_device,
201 &smc_device,
202 &clcd_device,
203 &sctl_device,
204 &wdog_device,
205 &gpio0_device,
206 &gpio1_device,
207 &gpio2_device,
208 &rtc_device,
209 &sci0_device,
210 &ssp0_device,
211 &aaci_device,
212 &mmc0_device,
213 &kmi0_device,
214 &kmi1_device,
215 };
216
217 /*
218 * RealView PB-X platform devices
219 */
220 static struct resource realview_pbx_flash_resources[] = {
221 [0] = {
222 .start = REALVIEW_PBX_FLASH0_BASE,
223 .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
224 .flags = IORESOURCE_MEM,
225 },
226 [1] = {
227 .start = REALVIEW_PBX_FLASH1_BASE,
228 .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
229 .flags = IORESOURCE_MEM,
230 },
231 };
232
233 static struct resource realview_pbx_smsc911x_resources[] = {
234 [0] = {
235 .start = REALVIEW_PBX_ETH_BASE,
236 .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
237 .flags = IORESOURCE_MEM,
238 },
239 [1] = {
240 .start = IRQ_PBX_ETH,
241 .end = IRQ_PBX_ETH,
242 .flags = IORESOURCE_IRQ,
243 },
244 };
245
246 static struct resource realview_pbx_isp1761_resources[] = {
247 [0] = {
248 .start = REALVIEW_PBX_USB_BASE,
249 .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
250 .flags = IORESOURCE_MEM,
251 },
252 [1] = {
253 .start = IRQ_PBX_USB,
254 .end = IRQ_PBX_USB,
255 .flags = IORESOURCE_IRQ,
256 },
257 };
258
259 static struct resource pmu_resources[] = {
260 [0] = {
261 .start = IRQ_PBX_PMU_CPU0,
262 .end = IRQ_PBX_PMU_CPU0,
263 .flags = IORESOURCE_IRQ,
264 },
265 [1] = {
266 .start = IRQ_PBX_PMU_CPU1,
267 .end = IRQ_PBX_PMU_CPU1,
268 .flags = IORESOURCE_IRQ,
269 },
270 [2] = {
271 .start = IRQ_PBX_PMU_CPU2,
272 .end = IRQ_PBX_PMU_CPU2,
273 .flags = IORESOURCE_IRQ,
274 },
275 [3] = {
276 .start = IRQ_PBX_PMU_CPU3,
277 .end = IRQ_PBX_PMU_CPU3,
278 .flags = IORESOURCE_IRQ,
279 },
280 };
281
282 static struct platform_device pmu_device = {
283 .name = "armv7-pmu",
284 .id = -1,
285 .num_resources = ARRAY_SIZE(pmu_resources),
286 .resource = pmu_resources,
287 };
288
gic_init_irq(void)289 static void __init gic_init_irq(void)
290 {
291 /* ARM PBX on-board GIC */
292 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
293 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
294 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
295 } else {
296 gic_init(0, IRQ_PBX_GIC_START,
297 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
298 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
299 }
300 }
301
302 #ifdef CONFIG_HAVE_ARM_TWD
303 static DEFINE_TWD_LOCAL_TIMER(twd_local_timer,
304 REALVIEW_PBX_TILE_TWD_BASE,
305 IRQ_LOCALTIMER);
306
realview_pbx_twd_init(void)307 static void __init realview_pbx_twd_init(void)
308 {
309 int err = twd_local_timer_register(&twd_local_timer);
310 if (err)
311 pr_err("twd_local_timer_register failed %d\n", err);
312 }
313 #else
314 #define realview_pbx_twd_init() do { } while(0)
315 #endif
316
realview_pbx_timer_init(void)317 static void __init realview_pbx_timer_init(void)
318 {
319 timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
320 timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
321 timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
322 timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
323
324 realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
325 realview_timer_init(IRQ_PBX_TIMER0_1);
326 realview_pbx_twd_init();
327 }
328
realview_pbx_fixup(struct tag * tags,char ** from)329 static void realview_pbx_fixup(struct tag *tags, char **from)
330 {
331 #ifdef CONFIG_SPARSEMEM
332 /*
333 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
334 * asm/mach/memory.h for more information).
335 */
336
337 memblock_add(0, SZ_256M);
338 memblock_add(0x20000000, SZ_512M);
339 memblock_add(0x80000000, SZ_256M);
340 #else
341 realview_fixup(tags, from);
342 #endif
343 }
344
realview_pbx_restart(enum reboot_mode mode,const char * cmd)345 static void realview_pbx_restart(enum reboot_mode mode, const char *cmd)
346 {
347 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
348 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
349
350 /*
351 * To reset, we hit the on-board reset register
352 * in the system FPGA
353 */
354 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
355 __raw_writel(0x00F0, reset_ctrl);
356 __raw_writel(0x00F4, reset_ctrl);
357 dsb();
358 }
359
realview_pbx_init(void)360 static void __init realview_pbx_init(void)
361 {
362 int i;
363
364 #ifdef CONFIG_CACHE_L2X0
365 if (core_tile_pbxa9mp()) {
366 void __iomem *l2x0_base =
367 __io_address(REALVIEW_PBX_TILE_L220_BASE);
368
369 /* set RAM latencies to 1 cycle for eASIC */
370 writel(0, l2x0_base + L310_TAG_LATENCY_CTRL);
371 writel(0, l2x0_base + L310_DATA_LATENCY_CTRL);
372
373 /* 16KB way size, 8-way associativity, parity disabled
374 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
375 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
376 platform_device_register(&pmu_device);
377 }
378 #endif
379
380 realview_flash_register(realview_pbx_flash_resources,
381 ARRAY_SIZE(realview_pbx_flash_resources));
382 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
383 platform_device_register(&realview_i2c_device);
384 platform_device_register(&realview_cf_device);
385 platform_device_register(&realview_leds_device);
386 realview_usb_register(realview_pbx_isp1761_resources);
387
388 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
389 struct amba_device *d = amba_devs[i];
390 amba_device_register(d, &iomem_resource);
391 }
392 }
393
394 MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
395 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
396 .atag_offset = 0x100,
397 .smp = smp_ops(realview_smp_ops),
398 .fixup = realview_pbx_fixup,
399 .map_io = realview_pbx_map_io,
400 .init_early = realview_init_early,
401 .init_irq = gic_init_irq,
402 .init_time = realview_pbx_timer_init,
403 .init_machine = realview_pbx_init,
404 #ifdef CONFIG_ZONE_DMA
405 .dma_zone_size = SZ_256M,
406 #endif
407 .restart = realview_pbx_restart,
408 MACHINE_END
409