1 /*
2 * linux/arch/arm/mach-realview/realview_pb1176.c
3 *
4 * Copyright (C) 2008 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/mtd/physmap.h>
30 #include <linux/mtd/partitions.h>
31 #include <linux/io.h>
32 #include <linux/irqchip/arm-gic.h>
33 #include <linux/platform_data/clk-realview.h>
34 #include <linux/reboot.h>
35 #include <linux/memblock.h>
36
37 #include <mach/hardware.h>
38 #include <asm/irq.h>
39 #include <asm/mach-types.h>
40 #include <asm/pgtable.h>
41 #include <asm/hardware/cache-l2x0.h>
42
43 #include <asm/mach/arch.h>
44 #include <asm/mach/flash.h>
45 #include <asm/mach/map.h>
46 #include <asm/mach/time.h>
47
48 #include <mach/board-pb1176.h>
49 #include <mach/irqs.h>
50
51 #include "core.h"
52
53 static struct map_desc realview_pb1176_io_desc[] __initdata = {
54 {
55 .virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
56 .pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
57 .length = SZ_4K,
58 .type = MT_DEVICE,
59 }, {
60 .virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
61 .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
62 .length = SZ_4K,
63 .type = MT_DEVICE,
64 }, {
65 .virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
66 .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
67 .length = SZ_4K,
68 .type = MT_DEVICE,
69 }, {
70 .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
71 .pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
72 .length = SZ_4K,
73 .type = MT_DEVICE,
74 }, {
75 .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
76 .pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
77 .length = SZ_4K,
78 .type = MT_DEVICE,
79 }, {
80 .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
81 .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
82 .length = SZ_4K,
83 .type = MT_DEVICE,
84 }, {
85 .virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
86 .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
87 .length = SZ_4K,
88 .type = MT_DEVICE,
89 }, {
90 .virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
91 .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
92 .length = SZ_4K,
93 .type = MT_DEVICE,
94 }, {
95 .virtual = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
96 .pfn = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
97 .length = SZ_8K,
98 .type = MT_DEVICE,
99 },
100 #ifdef CONFIG_DEBUG_LL
101 {
102 .virtual = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
103 .pfn = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
104 .length = SZ_4K,
105 .type = MT_DEVICE,
106 },
107 #endif
108 };
109
realview_pb1176_map_io(void)110 static void __init realview_pb1176_map_io(void)
111 {
112 iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
113 }
114
115 static struct pl061_platform_data gpio0_plat_data = {
116 .gpio_base = 0,
117 };
118
119 static struct pl061_platform_data gpio1_plat_data = {
120 .gpio_base = 8,
121 };
122
123 static struct pl061_platform_data gpio2_plat_data = {
124 .gpio_base = 16,
125 };
126
127 static struct pl022_ssp_controller ssp0_plat_data = {
128 .bus_id = 0,
129 .enable_dma = 0,
130 .num_chipselect = 1,
131 };
132
133 /*
134 * RealView PB1176 AMBA devices
135 */
136 #define GPIO2_IRQ { IRQ_PB1176_GPIO2 }
137 #define GPIO3_IRQ { IRQ_PB1176_GPIO3 }
138 #define AACI_IRQ { IRQ_PB1176_AACI }
139 #define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
140 #define KMI0_IRQ { IRQ_PB1176_KMI0 }
141 #define KMI1_IRQ { IRQ_PB1176_KMI1 }
142 #define PB1176_SMC_IRQ { }
143 #define MPMC_IRQ { }
144 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
145 #define SCTL_IRQ { }
146 #define PB1176_WATCHDOG_IRQ { IRQ_DC1176_WATCHDOG }
147 #define PB1176_GPIO0_IRQ { IRQ_DC1176_GPIO0 }
148 #define GPIO1_IRQ { IRQ_PB1176_GPIO1 }
149 #define PB1176_RTC_IRQ { IRQ_DC1176_RTC }
150 #define SCI_IRQ { IRQ_PB1176_SCI }
151 #define PB1176_UART0_IRQ { IRQ_DC1176_UART0 }
152 #define PB1176_UART1_IRQ { IRQ_DC1176_UART1 }
153 #define PB1176_UART2_IRQ { IRQ_DC1176_UART2 }
154 #define PB1176_UART3_IRQ { IRQ_DC1176_UART3 }
155 #define PB1176_UART4_IRQ { IRQ_PB1176_UART4 }
156 #define PB1176_SSP_IRQ { IRQ_DC1176_SSP }
157
158 /* FPGA Primecells */
159 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
160 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
161 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
162 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
163 APB_DEVICE(uart4, "fpga:uart4", PB1176_UART4, NULL);
164
165 /* DevChip Primecells */
166 AHB_DEVICE(smc, "dev:smc", PB1176_SMC, NULL);
167 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
168 APB_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG, NULL);
169 APB_DEVICE(gpio0, "dev:gpio0", PB1176_GPIO0, &gpio0_plat_data);
170 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
171 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
172 APB_DEVICE(rtc, "dev:rtc", PB1176_RTC, NULL);
173 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
174 APB_DEVICE(uart0, "dev:uart0", PB1176_UART0, NULL);
175 APB_DEVICE(uart1, "dev:uart1", PB1176_UART1, NULL);
176 APB_DEVICE(uart2, "dev:uart2", PB1176_UART2, NULL);
177 APB_DEVICE(uart3, "dev:uart3", PB1176_UART3, NULL);
178 APB_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, &ssp0_plat_data);
179 AHB_DEVICE(clcd, "dev:clcd", PB1176_CLCD, &clcd_plat_data);
180
181 static struct amba_device *amba_devs[] __initdata = {
182 &uart0_device,
183 &uart1_device,
184 &uart2_device,
185 &uart3_device,
186 &uart4_device,
187 &smc_device,
188 &clcd_device,
189 &sctl_device,
190 &wdog_device,
191 &gpio0_device,
192 &gpio1_device,
193 &gpio2_device,
194 &rtc_device,
195 &sci0_device,
196 &ssp0_device,
197 &aaci_device,
198 &mmc0_device,
199 &kmi0_device,
200 &kmi1_device,
201 };
202
203 /*
204 * RealView PB1176 platform devices
205 */
206 static struct resource realview_pb1176_flash_resources[] = {
207 {
208 .start = REALVIEW_PB1176_FLASH_BASE,
209 .end = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
210 .flags = IORESOURCE_MEM,
211 },
212 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
213 {
214 .start = REALVIEW_PB1176_SEC_FLASH_BASE,
215 .end = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
216 .flags = IORESOURCE_MEM,
217 },
218 #endif
219 };
220
221 static struct physmap_flash_data pb1176_rom_pdata = {
222 .probe_type = "map_rom",
223 .width = 4,
224 .nr_parts = 0,
225 };
226
227 static struct resource pb1176_rom_resources[] = {
228 /*
229 * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
230 * The reference manual states that this is actually a pseudo-ROM
231 * programmed in NVRAM.
232 */
233 {
234 .start = REALVIEW_DC1176_ROM_BASE,
235 .end = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
236 .flags = IORESOURCE_MEM,
237 }
238 };
239
240 static struct platform_device pb1176_rom_device = {
241 .name = "physmap-flash",
242 .id = -1,
243 .num_resources = ARRAY_SIZE(pb1176_rom_resources),
244 .resource = pb1176_rom_resources,
245 .dev = {
246 .platform_data = &pb1176_rom_pdata,
247 },
248 };
249
250 static struct resource realview_pb1176_smsc911x_resources[] = {
251 [0] = {
252 .start = REALVIEW_PB1176_ETH_BASE,
253 .end = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
254 .flags = IORESOURCE_MEM,
255 },
256 [1] = {
257 .start = IRQ_PB1176_ETH,
258 .end = IRQ_PB1176_ETH,
259 .flags = IORESOURCE_IRQ,
260 },
261 };
262
263 static struct resource realview_pb1176_isp1761_resources[] = {
264 [0] = {
265 .start = REALVIEW_PB1176_USB_BASE,
266 .end = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
267 .flags = IORESOURCE_MEM,
268 },
269 [1] = {
270 .start = IRQ_PB1176_USB,
271 .end = IRQ_PB1176_USB,
272 .flags = IORESOURCE_IRQ,
273 },
274 };
275
276 static struct resource pmu_resource = {
277 .start = IRQ_DC1176_CORE_PMU,
278 .end = IRQ_DC1176_CORE_PMU,
279 .flags = IORESOURCE_IRQ,
280 };
281
282 static struct platform_device pmu_device = {
283 .name = "armv6-pmu",
284 .id = -1,
285 .num_resources = 1,
286 .resource = &pmu_resource,
287 };
288
289 static struct resource char_lcd_resources[] = {
290 {
291 .start = REALVIEW_CHAR_LCD_BASE,
292 .end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
293 .flags = IORESOURCE_MEM,
294 },
295 {
296 .start = IRQ_PB1176_CHARLCD,
297 .end = IRQ_PB1176_CHARLCD,
298 .flags = IORESOURCE_IRQ,
299 },
300 };
301
302 static struct platform_device char_lcd_device = {
303 .name = "arm-charlcd",
304 .id = -1,
305 .num_resources = ARRAY_SIZE(char_lcd_resources),
306 .resource = char_lcd_resources,
307 };
308
gic_init_irq(void)309 static void __init gic_init_irq(void)
310 {
311 /* ARM1176 DevChip GIC, primary */
312 gic_init(0, IRQ_DC1176_GIC_START,
313 __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
314 __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
315
316 /* board GIC, secondary */
317 gic_init(1, IRQ_PB1176_GIC_START,
318 __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
319 __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
320 gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
321 }
322
realview_pb1176_timer_init(void)323 static void __init realview_pb1176_timer_init(void)
324 {
325 timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
326 timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
327 timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
328 timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
329
330 realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
331 realview_timer_init(IRQ_DC1176_TIMER0);
332 }
333
realview_pb1176_restart(enum reboot_mode mode,const char * cmd)334 static void realview_pb1176_restart(enum reboot_mode mode, const char *cmd)
335 {
336 void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
337 void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
338 __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
339 __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
340 dsb();
341 }
342
realview_pb1176_fixup(struct tag * tags,char ** from)343 static void realview_pb1176_fixup(struct tag *tags, char **from)
344 {
345 /*
346 * RealView PB1176 only has 128MB of RAM mapped at 0.
347 */
348 memblock_add(0, SZ_128M);
349 }
350
realview_pb1176_init(void)351 static void __init realview_pb1176_init(void)
352 {
353 int i;
354
355 #ifdef CONFIG_CACHE_L2X0
356 /*
357 * The PL220 needs to be manually configured as the hardware
358 * doesn't report the correct sizes.
359 * 128kB (16kB/way), 8-way associativity, event monitor and
360 * parity enabled, ignore share bit, no force write allocate
361 * Bits: .... ...0 0111 0011 0000 .... .... ....
362 */
363 l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
364 #endif
365
366 realview_flash_register(realview_pb1176_flash_resources,
367 ARRAY_SIZE(realview_pb1176_flash_resources));
368 platform_device_register(&pb1176_rom_device);
369 realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
370 platform_device_register(&realview_i2c_device);
371 realview_usb_register(realview_pb1176_isp1761_resources);
372 platform_device_register(&pmu_device);
373 platform_device_register(&char_lcd_device);
374 platform_device_register(&realview_leds_device);
375
376 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
377 struct amba_device *d = amba_devs[i];
378 amba_device_register(d, &iomem_resource);
379 }
380 }
381
382 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
383 /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
384 .atag_offset = 0x100,
385 .fixup = realview_pb1176_fixup,
386 .map_io = realview_pb1176_map_io,
387 .init_early = realview_init_early,
388 .init_irq = gic_init_irq,
389 .init_time = realview_pb1176_timer_init,
390 .init_machine = realview_pb1176_init,
391 #ifdef CONFIG_ZONE_DMA
392 .dma_zone_size = SZ_256M,
393 #endif
394 .restart = realview_pb1176_restart,
395 MACHINE_END
396