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realview_pb1176.c
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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/platform_data/clk-realview.h>
33 
34 #include <mach/hardware.h>
35 #include <asm/irq.h>
36 #include <asm/mach-types.h>
37 #include <asm/pgtable.h>
38 #include <asm/hardware/gic.h>
39 #include <asm/hardware/cache-l2x0.h>
40 
41 #include <asm/mach/arch.h>
42 #include <asm/mach/flash.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/time.h>
45 
46 #include <mach/board-pb1176.h>
47 #include <mach/irqs.h>
48 
49 #include "core.h"
50 
51 static struct map_desc realview_pb1176_io_desc[] __initdata = {
52  {
53  .virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
54  .pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
55  .length = SZ_4K,
56  .type = MT_DEVICE,
57  }, {
58  .virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_CPU_BASE),
59  .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_CPU_BASE),
60  .length = SZ_4K,
61  .type = MT_DEVICE,
62  }, {
63  .virtual = IO_ADDRESS(REALVIEW_PB1176_GIC_DIST_BASE),
64  .pfn = __phys_to_pfn(REALVIEW_PB1176_GIC_DIST_BASE),
65  .length = SZ_4K,
66  .type = MT_DEVICE,
67  }, {
68  .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_CPU_BASE),
69  .pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_CPU_BASE),
70  .length = SZ_4K,
71  .type = MT_DEVICE,
72  }, {
73  .virtual = IO_ADDRESS(REALVIEW_DC1176_GIC_DIST_BASE),
74  .pfn = __phys_to_pfn(REALVIEW_DC1176_GIC_DIST_BASE),
75  .length = SZ_4K,
76  .type = MT_DEVICE,
77  }, {
78  .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
79  .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
80  .length = SZ_4K,
81  .type = MT_DEVICE,
82  }, {
83  .virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER0_1_BASE),
84  .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER0_1_BASE),
85  .length = SZ_4K,
86  .type = MT_DEVICE,
87  }, {
88  .virtual = IO_ADDRESS(REALVIEW_PB1176_TIMER2_3_BASE),
89  .pfn = __phys_to_pfn(REALVIEW_PB1176_TIMER2_3_BASE),
90  .length = SZ_4K,
91  .type = MT_DEVICE,
92  }, {
93  .virtual = IO_ADDRESS(REALVIEW_PB1176_L220_BASE),
94  .pfn = __phys_to_pfn(REALVIEW_PB1176_L220_BASE),
95  .length = SZ_8K,
96  .type = MT_DEVICE,
97  },
98 #ifdef CONFIG_DEBUG_LL
99  {
100  .virtual = IO_ADDRESS(REALVIEW_PB1176_UART0_BASE),
101  .pfn = __phys_to_pfn(REALVIEW_PB1176_UART0_BASE),
102  .length = SZ_4K,
103  .type = MT_DEVICE,
104  },
105 #endif
106 };
107 
108 static void __init realview_pb1176_map_io(void)
109 {
110  iotable_init(realview_pb1176_io_desc, ARRAY_SIZE(realview_pb1176_io_desc));
111 }
112 
113 static struct pl061_platform_data gpio0_plat_data = {
114  .gpio_base = 0,
115 };
116 
117 static struct pl061_platform_data gpio1_plat_data = {
118  .gpio_base = 8,
119 };
120 
121 static struct pl061_platform_data gpio2_plat_data = {
122  .gpio_base = 16,
123 };
124 
125 static struct pl022_ssp_controller ssp0_plat_data = {
126  .bus_id = 0,
127  .enable_dma = 0,
128  .num_chipselect = 1,
129 };
130 
131 /*
132  * RealView PB1176 AMBA devices
133  */
134 #define GPIO2_IRQ { IRQ_PB1176_GPIO2 }
135 #define GPIO3_IRQ { IRQ_PB1176_GPIO3 }
136 #define AACI_IRQ { IRQ_PB1176_AACI }
137 #define MMCI0_IRQ { IRQ_PB1176_MMCI0A, IRQ_PB1176_MMCI0B }
138 #define KMI0_IRQ { IRQ_PB1176_KMI0 }
139 #define KMI1_IRQ { IRQ_PB1176_KMI1 }
140 #define PB1176_SMC_IRQ { }
141 #define MPMC_IRQ { }
142 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD }
143 #define SCTL_IRQ { }
144 #define PB1176_WATCHDOG_IRQ { IRQ_DC1176_WATCHDOG }
145 #define PB1176_GPIO0_IRQ { IRQ_DC1176_GPIO0 }
146 #define GPIO1_IRQ { IRQ_PB1176_GPIO1 }
147 #define PB1176_RTC_IRQ { IRQ_DC1176_RTC }
148 #define SCI_IRQ { IRQ_PB1176_SCI }
149 #define PB1176_UART0_IRQ { IRQ_DC1176_UART0 }
150 #define PB1176_UART1_IRQ { IRQ_DC1176_UART1 }
151 #define PB1176_UART2_IRQ { IRQ_DC1176_UART2 }
152 #define PB1176_UART3_IRQ { IRQ_DC1176_UART3 }
153 #define PB1176_UART4_IRQ { IRQ_PB1176_UART4 }
154 #define PB1176_SSP_IRQ { IRQ_DC1176_SSP }
155 
156 /* FPGA Primecells */
157 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
158 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
159 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
160 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
161 APB_DEVICE(uart4, "fpga:uart4", PB1176_UART4, NULL);
162 
163 /* DevChip Primecells */
164 AHB_DEVICE(smc, "dev:smc", PB1176_SMC, NULL);
165 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
166 APB_DEVICE(wdog, "dev:wdog", PB1176_WATCHDOG, NULL);
167 APB_DEVICE(gpio0, "dev:gpio0", PB1176_GPIO0, &gpio0_plat_data);
168 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
169 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
170 APB_DEVICE(rtc, "dev:rtc", PB1176_RTC, NULL);
171 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
172 APB_DEVICE(uart0, "dev:uart0", PB1176_UART0, NULL);
173 APB_DEVICE(uart1, "dev:uart1", PB1176_UART1, NULL);
174 APB_DEVICE(uart2, "dev:uart2", PB1176_UART2, NULL);
175 APB_DEVICE(uart3, "dev:uart3", PB1176_UART3, NULL);
176 APB_DEVICE(ssp0, "dev:ssp0", PB1176_SSP, &ssp0_plat_data);
177 AHB_DEVICE(clcd, "dev:clcd", PB1176_CLCD, &clcd_plat_data);
178 
179 static struct amba_device *amba_devs[] __initdata = {
180  &uart0_device,
181  &uart1_device,
182  &uart2_device,
183  &uart3_device,
184  &uart4_device,
185  &smc_device,
186  &clcd_device,
187  &sctl_device,
188  &wdog_device,
189  &gpio0_device,
190  &gpio1_device,
191  &gpio2_device,
192  &rtc_device,
193  &sci0_device,
194  &ssp0_device,
195  &aaci_device,
196  &mmc0_device,
197  &kmi0_device,
198  &kmi1_device,
199 };
200 
201 /*
202  * RealView PB1176 platform devices
203  */
204 static struct resource realview_pb1176_flash_resources[] = {
205  {
206  .start = REALVIEW_PB1176_FLASH_BASE,
207  .end = REALVIEW_PB1176_FLASH_BASE + REALVIEW_PB1176_FLASH_SIZE - 1,
208  .flags = IORESOURCE_MEM,
209  },
210 #ifdef CONFIG_REALVIEW_PB1176_SECURE_FLASH
211  {
212  .start = REALVIEW_PB1176_SEC_FLASH_BASE,
213  .end = REALVIEW_PB1176_SEC_FLASH_BASE + REALVIEW_PB1176_SEC_FLASH_SIZE - 1,
214  .flags = IORESOURCE_MEM,
215  },
216 #endif
217 };
218 
219 static struct physmap_flash_data pb1176_rom_pdata = {
220  .probe_type = "map_rom",
221  .width = 4,
222  .nr_parts = 0,
223 };
224 
225 static struct resource pb1176_rom_resources[] = {
226  /*
227  * This exposes the PB1176 DevChip ROM as an MTD ROM mapping.
228  * The reference manual states that this is actually a pseudo-ROM
229  * programmed in NVRAM.
230  */
231  {
232  .start = REALVIEW_DC1176_ROM_BASE,
233  .end = REALVIEW_DC1176_ROM_BASE + SZ_16K - 1,
234  .flags = IORESOURCE_MEM,
235  }
236 };
237 
238 static struct platform_device pb1176_rom_device = {
239  .name = "physmap-flash",
240  .id = -1,
241  .num_resources = ARRAY_SIZE(pb1176_rom_resources),
242  .resource = pb1176_rom_resources,
243  .dev = {
244  .platform_data = &pb1176_rom_pdata,
245  },
246 };
247 
248 static struct resource realview_pb1176_smsc911x_resources[] = {
249  [0] = {
250  .start = REALVIEW_PB1176_ETH_BASE,
251  .end = REALVIEW_PB1176_ETH_BASE + SZ_64K - 1,
252  .flags = IORESOURCE_MEM,
253  },
254  [1] = {
255  .start = IRQ_PB1176_ETH,
256  .end = IRQ_PB1176_ETH,
257  .flags = IORESOURCE_IRQ,
258  },
259 };
260 
261 static struct resource realview_pb1176_isp1761_resources[] = {
262  [0] = {
263  .start = REALVIEW_PB1176_USB_BASE,
264  .end = REALVIEW_PB1176_USB_BASE + SZ_128K - 1,
265  .flags = IORESOURCE_MEM,
266  },
267  [1] = {
268  .start = IRQ_PB1176_USB,
269  .end = IRQ_PB1176_USB,
270  .flags = IORESOURCE_IRQ,
271  },
272 };
273 
274 static struct resource pmu_resource = {
275  .start = IRQ_DC1176_CORE_PMU,
276  .end = IRQ_DC1176_CORE_PMU,
277  .flags = IORESOURCE_IRQ,
278 };
279 
280 static struct platform_device pmu_device = {
281  .name = "arm-pmu",
282  .id = -1,
283  .num_resources = 1,
284  .resource = &pmu_resource,
285 };
286 
287 static struct resource char_lcd_resources[] = {
288  {
289  .start = REALVIEW_CHAR_LCD_BASE,
290  .end = (REALVIEW_CHAR_LCD_BASE + SZ_4K - 1),
291  .flags = IORESOURCE_MEM,
292  },
293  {
294  .start = IRQ_PB1176_CHARLCD,
295  .end = IRQ_PB1176_CHARLCD,
296  .flags = IORESOURCE_IRQ,
297  },
298 };
299 
300 static struct platform_device char_lcd_device = {
301  .name = "arm-charlcd",
302  .id = -1,
303  .num_resources = ARRAY_SIZE(char_lcd_resources),
304  .resource = char_lcd_resources,
305 };
306 
307 static void __init gic_init_irq(void)
308 {
309  /* ARM1176 DevChip GIC, primary */
310  gic_init(0, IRQ_DC1176_GIC_START,
311  __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
312  __io_address(REALVIEW_DC1176_GIC_CPU_BASE));
313 
314  /* board GIC, secondary */
315  gic_init(1, IRQ_PB1176_GIC_START,
316  __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
317  __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
318  gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
319 }
320 
321 static void __init realview_pb1176_timer_init(void)
322 {
323  timer0_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE);
324  timer1_va_base = __io_address(REALVIEW_PB1176_TIMER0_1_BASE) + 0x20;
325  timer2_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE);
326  timer3_va_base = __io_address(REALVIEW_PB1176_TIMER2_3_BASE) + 0x20;
327 
328  realview_clk_init(__io_address(REALVIEW_SYS_BASE), true);
329  realview_timer_init(IRQ_DC1176_TIMER0);
330 }
331 
332 static struct sys_timer realview_pb1176_timer = {
333  .init = realview_pb1176_timer_init,
334 };
335 
336 static void realview_pb1176_restart(char mode, const char *cmd)
337 {
338  void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
339  void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
340  __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
341  __raw_writel(REALVIEW_PB1176_SYS_SOFT_RESET, reset_ctrl);
342  dsb();
343 }
344 
345 static void realview_pb1176_fixup(struct tag *tags, char **from,
346  struct meminfo *meminfo)
347 {
348  /*
349  * RealView PB1176 only has 128MB of RAM mapped at 0.
350  */
351  meminfo->bank[0].start = 0;
352  meminfo->bank[0].size = SZ_128M;
353  meminfo->nr_banks = 1;
354 }
355 
356 static void __init realview_pb1176_init(void)
357 {
358  int i;
359 
360 #ifdef CONFIG_CACHE_L2X0
361  /* 128Kb (16Kb/way) 8-way associativity. evmon/parity/share enabled. */
362  l2x0_init(__io_address(REALVIEW_PB1176_L220_BASE), 0x00730000, 0xfe000fff);
363 #endif
364 
365  realview_flash_register(realview_pb1176_flash_resources,
366  ARRAY_SIZE(realview_pb1176_flash_resources));
367  platform_device_register(&pb1176_rom_device);
368  realview_eth_register(NULL, realview_pb1176_smsc911x_resources);
369  platform_device_register(&realview_i2c_device);
370  realview_usb_register(realview_pb1176_isp1761_resources);
371  platform_device_register(&pmu_device);
372  platform_device_register(&char_lcd_device);
373 
374  for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
375  struct amba_device *d = amba_devs[i];
376  amba_device_register(d, &iomem_resource);
377  }
378 }
379 
380 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
381  /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
382  .atag_offset = 0x100,
383  .fixup = realview_pb1176_fixup,
384  .map_io = realview_pb1176_map_io,
385  .init_early = realview_init_early,
386  .init_irq = gic_init_irq,
387  .timer = &realview_pb1176_timer,
388  .handle_irq = gic_handle_irq,
389  .init_machine = realview_pb1176_init,
390 #ifdef CONFIG_ZONE_DMA
391  .dma_zone_size = SZ_256M,
392 #endif
393  .restart = realview_pb1176_restart,
394 MACHINE_END
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