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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/sysdev.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
49static 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
99static struct map_desc realview_local_io_desc[] __initdata = {
100 {
101 .virtual = IO_ADDRESS(REALVIEW_PBX_TILE_GIC_CPU_BASE),
102 .pfn = __phys_to_pfn(REALVIEW_PBX_TILE_GIC_CPU_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
118static 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
125static struct pl061_platform_data gpio0_plat_data = {
126 .gpio_base = 0,
127 .irq_base = -1,
128};
129
130static struct pl061_platform_data gpio1_plat_data = {
131 .gpio_base = 8,
132 .irq_base = -1,
133};
134
135static struct pl061_platform_data gpio2_plat_data = {
136 .gpio_base = 16,
137 .irq_base = -1,
138};
139
140static struct pl022_ssp_controller ssp0_plat_data = {
141 .bus_id = 0,
142 .enable_dma = 0,
143 .num_chipselect = 1,
144};
145
146/*
147 * RealView PBXCore AMBA devices
148 */
149
150#define GPIO2_IRQ { IRQ_PBX_GPIO2, NO_IRQ }
151#define GPIO3_IRQ { IRQ_PBX_GPIO3, NO_IRQ }
152#define AACI_IRQ { IRQ_PBX_AACI, NO_IRQ }
153#define MMCI0_IRQ { IRQ_PBX_MMCI0A, IRQ_PBX_MMCI0B }
154#define KMI0_IRQ { IRQ_PBX_KMI0, NO_IRQ }
155#define KMI1_IRQ { IRQ_PBX_KMI1, NO_IRQ }
156#define PBX_SMC_IRQ { NO_IRQ, NO_IRQ }
157#define MPMC_IRQ { NO_IRQ, NO_IRQ }
158#define PBX_CLCD_IRQ { IRQ_PBX_CLCD, NO_IRQ }
159#define DMAC_IRQ { IRQ_PBX_DMAC, NO_IRQ }
160#define SCTL_IRQ { NO_IRQ, NO_IRQ }
161#define PBX_WATCHDOG_IRQ { IRQ_PBX_WATCHDOG, NO_IRQ }
162#define PBX_GPIO0_IRQ { IRQ_PBX_GPIO0, NO_IRQ }
163#define GPIO1_IRQ { IRQ_PBX_GPIO1, NO_IRQ }
164#define PBX_RTC_IRQ { IRQ_PBX_RTC, NO_IRQ }
165#define SCI_IRQ { IRQ_PBX_SCI, NO_IRQ }
166#define PBX_UART0_IRQ { IRQ_PBX_UART0, NO_IRQ }
167#define PBX_UART1_IRQ { IRQ_PBX_UART1, NO_IRQ }
168#define PBX_UART2_IRQ { IRQ_PBX_UART2, NO_IRQ }
169#define PBX_UART3_IRQ { IRQ_PBX_UART3, NO_IRQ }
170#define PBX_SSP_IRQ { IRQ_PBX_SSP, NO_IRQ }
171
172/* FPGA Primecells */
173AMBA_DEVICE(aaci, "fpga:aaci", AACI, NULL);
174AMBA_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
175AMBA_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
176AMBA_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
177AMBA_DEVICE(uart3, "fpga:uart3", PBX_UART3, NULL);
178
179/* DevChip Primecells */
180AMBA_DEVICE(smc, "dev:smc", PBX_SMC, NULL);
181AMBA_DEVICE(sctl, "dev:sctl", SCTL, NULL);
182AMBA_DEVICE(wdog, "dev:wdog", PBX_WATCHDOG, NULL);
183AMBA_DEVICE(gpio0, "dev:gpio0", PBX_GPIO0, &gpio0_plat_data);
184AMBA_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
185AMBA_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
186AMBA_DEVICE(rtc, "dev:rtc", PBX_RTC, NULL);
187AMBA_DEVICE(sci0, "dev:sci0", SCI, NULL);
188AMBA_DEVICE(uart0, "dev:uart0", PBX_UART0, NULL);
189AMBA_DEVICE(uart1, "dev:uart1", PBX_UART1, NULL);
190AMBA_DEVICE(uart2, "dev:uart2", PBX_UART2, NULL);
191AMBA_DEVICE(ssp0, "dev:ssp0", PBX_SSP, &ssp0_plat_data);
192
193/* Primecells on the NEC ISSP chip */
194AMBA_DEVICE(clcd, "issp:clcd", PBX_CLCD, &clcd_plat_data);
195AMBA_DEVICE(dmac, "issp:dmac", DMAC, NULL);
196
197static struct amba_device *amba_devs[] __initdata = {
198 &dmac_device,
199 &uart0_device,
200 &uart1_device,
201 &uart2_device,
202 &uart3_device,
203 &smc_device,
204 &clcd_device,
205 &sctl_device,
206 &wdog_device,
207 &gpio0_device,
208 &gpio1_device,
209 &gpio2_device,
210 &rtc_device,
211 &sci0_device,
212 &ssp0_device,
213 &aaci_device,
214 &mmc0_device,
215 &kmi0_device,
216 &kmi1_device,
217};
218
219/*
220 * RealView PB-X platform devices
221 */
222static struct resource realview_pbx_flash_resources[] = {
223 [0] = {
224 .start = REALVIEW_PBX_FLASH0_BASE,
225 .end = REALVIEW_PBX_FLASH0_BASE + REALVIEW_PBX_FLASH0_SIZE - 1,
226 .flags = IORESOURCE_MEM,
227 },
228 [1] = {
229 .start = REALVIEW_PBX_FLASH1_BASE,
230 .end = REALVIEW_PBX_FLASH1_BASE + REALVIEW_PBX_FLASH1_SIZE - 1,
231 .flags = IORESOURCE_MEM,
232 },
233};
234
235static struct resource realview_pbx_smsc911x_resources[] = {
236 [0] = {
237 .start = REALVIEW_PBX_ETH_BASE,
238 .end = REALVIEW_PBX_ETH_BASE + SZ_64K - 1,
239 .flags = IORESOURCE_MEM,
240 },
241 [1] = {
242 .start = IRQ_PBX_ETH,
243 .end = IRQ_PBX_ETH,
244 .flags = IORESOURCE_IRQ,
245 },
246};
247
248static struct resource realview_pbx_isp1761_resources[] = {
249 [0] = {
250 .start = REALVIEW_PBX_USB_BASE,
251 .end = REALVIEW_PBX_USB_BASE + SZ_128K - 1,
252 .flags = IORESOURCE_MEM,
253 },
254 [1] = {
255 .start = IRQ_PBX_USB,
256 .end = IRQ_PBX_USB,
257 .flags = IORESOURCE_IRQ,
258 },
259};
260
261static struct resource pmu_resources[] = {
262 [0] = {
263 .start = IRQ_PBX_PMU_CPU0,
264 .end = IRQ_PBX_PMU_CPU0,
265 .flags = IORESOURCE_IRQ,
266 },
267 [1] = {
268 .start = IRQ_PBX_PMU_CPU1,
269 .end = IRQ_PBX_PMU_CPU1,
270 .flags = IORESOURCE_IRQ,
271 },
272 [2] = {
273 .start = IRQ_PBX_PMU_CPU2,
274 .end = IRQ_PBX_PMU_CPU2,
275 .flags = IORESOURCE_IRQ,
276 },
277 [3] = {
278 .start = IRQ_PBX_PMU_CPU3,
279 .end = IRQ_PBX_PMU_CPU3,
280 .flags = IORESOURCE_IRQ,
281 },
282};
283
284static struct platform_device pmu_device = {
285 .name = "arm-pmu",
286 .id = ARM_PMU_DEVICE_CPU,
287 .num_resources = ARRAY_SIZE(pmu_resources),
288 .resource = pmu_resources,
289};
290
291static void __init gic_init_irq(void)
292{
293 /* ARM PBX on-board GIC */
294 if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
295 gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
296 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
297 } else {
298 gic_init(0, IRQ_PBX_GIC_START,
299 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
300 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
301 }
302}
303
304static void __init realview_pbx_timer_init(void)
305{
306 timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE);
307 timer1_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE) + 0x20;
308 timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE);
309 timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20;
310
311#ifdef CONFIG_LOCAL_TIMERS
312 if (core_tile_pbx11mp() || core_tile_pbxa9mp())
313 twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE);
314#endif
315 realview_timer_init(IRQ_PBX_TIMER0_1);
316}
317
318static struct sys_timer realview_pbx_timer = {
319 .init = realview_pbx_timer_init,
320};
321
322static void realview_pbx_fixup(struct machine_desc *mdesc, struct tag *tags,
323 char **from, struct meminfo *meminfo)
324{
325#ifdef CONFIG_SPARSEMEM
326 /*
327 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
328 * asm/mach/memory.h for more information).
329 */
330 meminfo->bank[0].start = 0;
331 meminfo->bank[0].size = SZ_256M;
332 meminfo->bank[1].start = 0x20000000;
333 meminfo->bank[1].size = SZ_512M;
334 meminfo->bank[2].start = 0x80000000;
335 meminfo->bank[2].size = SZ_256M;
336 meminfo->nr_banks = 3;
337#else
338 realview_fixup(mdesc, tags, from, meminfo);
339#endif
340}
341
342static void realview_pbx_reset(char mode)
343{
344 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
345 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
346
347 /*
348 * To reset, we hit the on-board reset register
349 * in the system FPGA
350 */
351 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
352 __raw_writel(0x00F0, reset_ctrl);
353 __raw_writel(0x00F4, reset_ctrl);
354}
355
356static void __init realview_pbx_init(void)
357{
358 int i;
359
360#ifdef CONFIG_CACHE_L2X0
361 if (core_tile_pbxa9mp()) {
362 void __iomem *l2x0_base =
363 __io_address(REALVIEW_PBX_TILE_L220_BASE);
364
365 /* set RAM latencies to 1 cycle for eASIC */
366 writel(0, l2x0_base + L2X0_TAG_LATENCY_CTRL);
367 writel(0, l2x0_base + L2X0_DATA_LATENCY_CTRL);
368
369 /* 16KB way size, 8-way associativity, parity disabled
370 * Bits: .. 0 0 0 0 1 00 1 0 1 001 0 000 0 .... .... .... */
371 l2x0_init(l2x0_base, 0x02520000, 0xc0000fff);
372 platform_device_register(&pmu_device);
373 }
374#endif
375
376 realview_flash_register(realview_pbx_flash_resources,
377 ARRAY_SIZE(realview_pbx_flash_resources));
378 realview_eth_register(NULL, realview_pbx_smsc911x_resources);
379 platform_device_register(&realview_i2c_device);
380 platform_device_register(&realview_cf_device);
381 realview_usb_register(realview_pbx_isp1761_resources);
382
383 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
384 struct amba_device *d = amba_devs[i];
385 amba_device_register(d, &iomem_resource);
386 }
387
388#ifdef CONFIG_LEDS
389 leds_event = realview_leds_event;
390#endif
391 realview_reset = realview_pbx_reset;
392}
393
394MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
395 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
396 .boot_params = PLAT_PHYS_OFFSET + 0x00000100,
397 .fixup = realview_pbx_fixup,
398 .map_io = realview_pbx_map_io,
399 .init_early = realview_init_early,
400 .init_irq = gic_init_irq,
401 .timer = &realview_pbx_timer,
402 .init_machine = realview_pbx_init,
403#ifdef CONFIG_ZONE_DMA
404 .dma_zone_size = SZ_256M,
405#endif
406MACHINE_END