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realview_pba8.c
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1 /*
2  * linux/arch/arm/mach-realview/realview_pba8.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/io.h>
30 #include <linux/platform_data/clk-realview.h>
31 
32 #include <asm/irq.h>
33 #include <asm/mach-types.h>
34 #include <asm/pgtable.h>
35 #include <asm/hardware/gic.h>
36 
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/time.h>
40 
41 #include <mach/hardware.h>
42 #include <mach/board-pba8.h>
43 #include <mach/irqs.h>
44 
45 #include "core.h"
46 
47 static struct map_desc realview_pba8_io_desc[] __initdata = {
48  {
49  .virtual = IO_ADDRESS(REALVIEW_SYS_BASE),
50  .pfn = __phys_to_pfn(REALVIEW_SYS_BASE),
51  .length = SZ_4K,
52  .type = MT_DEVICE,
53  }, {
54  .virtual = IO_ADDRESS(REALVIEW_PBA8_GIC_CPU_BASE),
55  .pfn = __phys_to_pfn(REALVIEW_PBA8_GIC_CPU_BASE),
56  .length = SZ_4K,
57  .type = MT_DEVICE,
58  }, {
59  .virtual = IO_ADDRESS(REALVIEW_PBA8_GIC_DIST_BASE),
60  .pfn = __phys_to_pfn(REALVIEW_PBA8_GIC_DIST_BASE),
61  .length = SZ_4K,
62  .type = MT_DEVICE,
63  }, {
64  .virtual = IO_ADDRESS(REALVIEW_SCTL_BASE),
65  .pfn = __phys_to_pfn(REALVIEW_SCTL_BASE),
66  .length = SZ_4K,
67  .type = MT_DEVICE,
68  }, {
69  .virtual = IO_ADDRESS(REALVIEW_PBA8_TIMER0_1_BASE),
70  .pfn = __phys_to_pfn(REALVIEW_PBA8_TIMER0_1_BASE),
71  .length = SZ_4K,
72  .type = MT_DEVICE,
73  }, {
74  .virtual = IO_ADDRESS(REALVIEW_PBA8_TIMER2_3_BASE),
75  .pfn = __phys_to_pfn(REALVIEW_PBA8_TIMER2_3_BASE),
76  .length = SZ_4K,
77  .type = MT_DEVICE,
78  },
79 #ifdef CONFIG_PCI
80  {
81  .virtual = PCIX_UNIT_BASE,
82  .pfn = __phys_to_pfn(REALVIEW_PBA8_PCI_BASE),
83  .length = REALVIEW_PBA8_PCI_BASE_SIZE,
84  .type = MT_DEVICE
85  },
86 #endif
87 #ifdef CONFIG_DEBUG_LL
88  {
89  .virtual = IO_ADDRESS(REALVIEW_PBA8_UART0_BASE),
90  .pfn = __phys_to_pfn(REALVIEW_PBA8_UART0_BASE),
91  .length = SZ_4K,
92  .type = MT_DEVICE,
93  },
94 #endif
95 };
96 
97 static void __init realview_pba8_map_io(void)
98 {
99  iotable_init(realview_pba8_io_desc, ARRAY_SIZE(realview_pba8_io_desc));
100 }
101 
102 static struct pl061_platform_data gpio0_plat_data = {
103  .gpio_base = 0,
104 };
105 
106 static struct pl061_platform_data gpio1_plat_data = {
107  .gpio_base = 8,
108 };
109 
110 static struct pl061_platform_data gpio2_plat_data = {
111  .gpio_base = 16,
112 };
113 
114 static struct pl022_ssp_controller ssp0_plat_data = {
115  .bus_id = 0,
116  .enable_dma = 0,
117  .num_chipselect = 1,
118 };
119 
120 /*
121  * RealView PBA8Core AMBA devices
122  */
123 
124 #define GPIO2_IRQ { IRQ_PBA8_GPIO2 }
125 #define GPIO3_IRQ { IRQ_PBA8_GPIO3 }
126 #define AACI_IRQ { IRQ_PBA8_AACI }
127 #define MMCI0_IRQ { IRQ_PBA8_MMCI0A, IRQ_PBA8_MMCI0B }
128 #define KMI0_IRQ { IRQ_PBA8_KMI0 }
129 #define KMI1_IRQ { IRQ_PBA8_KMI1 }
130 #define PBA8_SMC_IRQ { }
131 #define MPMC_IRQ { }
132 #define PBA8_CLCD_IRQ { IRQ_PBA8_CLCD }
133 #define DMAC_IRQ { IRQ_PBA8_DMAC }
134 #define SCTL_IRQ { }
135 #define PBA8_WATCHDOG_IRQ { IRQ_PBA8_WATCHDOG }
136 #define PBA8_GPIO0_IRQ { IRQ_PBA8_GPIO0 }
137 #define GPIO1_IRQ { IRQ_PBA8_GPIO1 }
138 #define PBA8_RTC_IRQ { IRQ_PBA8_RTC }
139 #define SCI_IRQ { IRQ_PBA8_SCI }
140 #define PBA8_UART0_IRQ { IRQ_PBA8_UART0 }
141 #define PBA8_UART1_IRQ { IRQ_PBA8_UART1 }
142 #define PBA8_UART2_IRQ { IRQ_PBA8_UART2 }
143 #define PBA8_UART3_IRQ { IRQ_PBA8_UART3 }
144 #define PBA8_SSP_IRQ { IRQ_PBA8_SSP }
145 
146 /* FPGA Primecells */
147 APB_DEVICE(aaci, "fpga:aaci", AACI, NULL);
148 APB_DEVICE(mmc0, "fpga:mmc0", MMCI0, &realview_mmc0_plat_data);
149 APB_DEVICE(kmi0, "fpga:kmi0", KMI0, NULL);
150 APB_DEVICE(kmi1, "fpga:kmi1", KMI1, NULL);
151 APB_DEVICE(uart3, "fpga:uart3", PBA8_UART3, NULL);
152 
153 /* DevChip Primecells */
154 AHB_DEVICE(smc, "dev:smc", PBA8_SMC, NULL);
155 AHB_DEVICE(sctl, "dev:sctl", SCTL, NULL);
156 APB_DEVICE(wdog, "dev:wdog", PBA8_WATCHDOG, NULL);
157 APB_DEVICE(gpio0, "dev:gpio0", PBA8_GPIO0, &gpio0_plat_data);
158 APB_DEVICE(gpio1, "dev:gpio1", GPIO1, &gpio1_plat_data);
159 APB_DEVICE(gpio2, "dev:gpio2", GPIO2, &gpio2_plat_data);
160 APB_DEVICE(rtc, "dev:rtc", PBA8_RTC, NULL);
161 APB_DEVICE(sci0, "dev:sci0", SCI, NULL);
162 APB_DEVICE(uart0, "dev:uart0", PBA8_UART0, NULL);
163 APB_DEVICE(uart1, "dev:uart1", PBA8_UART1, NULL);
164 APB_DEVICE(uart2, "dev:uart2", PBA8_UART2, NULL);
165 APB_DEVICE(ssp0, "dev:ssp0", PBA8_SSP, &ssp0_plat_data);
166 
167 /* Primecells on the NEC ISSP chip */
168 AHB_DEVICE(clcd, "issp:clcd", PBA8_CLCD, &clcd_plat_data);
169 AHB_DEVICE(dmac, "issp:dmac", DMAC, NULL);
170 
171 static struct amba_device *amba_devs[] __initdata = {
172  &dmac_device,
173  &uart0_device,
174  &uart1_device,
175  &uart2_device,
176  &uart3_device,
177  &smc_device,
178  &clcd_device,
179  &sctl_device,
180  &wdog_device,
181  &gpio0_device,
182  &gpio1_device,
183  &gpio2_device,
184  &rtc_device,
185  &sci0_device,
186  &ssp0_device,
187  &aaci_device,
188  &mmc0_device,
189  &kmi0_device,
190  &kmi1_device,
191 };
192 
193 /*
194  * RealView PB-A8 platform devices
195  */
196 static struct resource realview_pba8_flash_resource[] = {
197  [0] = {
198  .start = REALVIEW_PBA8_FLASH0_BASE,
199  .end = REALVIEW_PBA8_FLASH0_BASE + REALVIEW_PBA8_FLASH0_SIZE - 1,
200  .flags = IORESOURCE_MEM,
201  },
202  [1] = {
203  .start = REALVIEW_PBA8_FLASH1_BASE,
204  .end = REALVIEW_PBA8_FLASH1_BASE + REALVIEW_PBA8_FLASH1_SIZE - 1,
205  .flags = IORESOURCE_MEM,
206  },
207 };
208 
209 static struct resource realview_pba8_smsc911x_resources[] = {
210  [0] = {
211  .start = REALVIEW_PBA8_ETH_BASE,
212  .end = REALVIEW_PBA8_ETH_BASE + SZ_64K - 1,
213  .flags = IORESOURCE_MEM,
214  },
215  [1] = {
216  .start = IRQ_PBA8_ETH,
217  .end = IRQ_PBA8_ETH,
218  .flags = IORESOURCE_IRQ,
219  },
220 };
221 
222 static struct resource realview_pba8_isp1761_resources[] = {
223  [0] = {
224  .start = REALVIEW_PBA8_USB_BASE,
225  .end = REALVIEW_PBA8_USB_BASE + SZ_128K - 1,
226  .flags = IORESOURCE_MEM,
227  },
228  [1] = {
229  .start = IRQ_PBA8_USB,
230  .end = IRQ_PBA8_USB,
231  .flags = IORESOURCE_IRQ,
232  },
233 };
234 
235 static struct resource pmu_resource = {
236  .start = IRQ_PBA8_PMU,
237  .end = IRQ_PBA8_PMU,
238  .flags = IORESOURCE_IRQ,
239 };
240 
241 static struct platform_device pmu_device = {
242  .name = "arm-pmu",
243  .id = -1,
244  .num_resources = 1,
245  .resource = &pmu_resource,
246 };
247 
248 static void __init gic_init_irq(void)
249 {
250  /* ARM PB-A8 on-board GIC */
251  gic_init(0, IRQ_PBA8_GIC_START,
252  __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
253  __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
254 }
255 
256 static void __init realview_pba8_timer_init(void)
257 {
258  timer0_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE);
259  timer1_va_base = __io_address(REALVIEW_PBA8_TIMER0_1_BASE) + 0x20;
260  timer2_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE);
261  timer3_va_base = __io_address(REALVIEW_PBA8_TIMER2_3_BASE) + 0x20;
262 
263  realview_clk_init(__io_address(REALVIEW_SYS_BASE), false);
264  realview_timer_init(IRQ_PBA8_TIMER0_1);
265 }
266 
267 static struct sys_timer realview_pba8_timer = {
268  .init = realview_pba8_timer_init,
269 };
270 
271 static void realview_pba8_restart(char mode, const char *cmd)
272 {
273  void __iomem *reset_ctrl = __io_address(REALVIEW_SYS_RESETCTL);
274  void __iomem *lock_ctrl = __io_address(REALVIEW_SYS_LOCK);
275 
276  /*
277  * To reset, we hit the on-board reset register
278  * in the system FPGA
279  */
280  __raw_writel(REALVIEW_SYS_LOCK_VAL, lock_ctrl);
281  __raw_writel(0x0000, reset_ctrl);
282  __raw_writel(0x0004, reset_ctrl);
283  dsb();
284 }
285 
286 static void __init realview_pba8_init(void)
287 {
288  int i;
289 
290  realview_flash_register(realview_pba8_flash_resource,
291  ARRAY_SIZE(realview_pba8_flash_resource));
292  realview_eth_register(NULL, realview_pba8_smsc911x_resources);
293  platform_device_register(&realview_i2c_device);
294  platform_device_register(&realview_cf_device);
295  realview_usb_register(realview_pba8_isp1761_resources);
296  platform_device_register(&pmu_device);
297 
298  for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
299  struct amba_device *d = amba_devs[i];
300  amba_device_register(d, &iomem_resource);
301  }
302 }
303 
304 MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
305  /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
306  .atag_offset = 0x100,
307  .fixup = realview_fixup,
308  .map_io = realview_pba8_map_io,
309  .init_early = realview_init_early,
310  .init_irq = gic_init_irq,
311  .timer = &realview_pba8_timer,
312  .handle_irq = gic_handle_irq,
313  .init_machine = realview_pba8_init,
314 #ifdef CONFIG_ZONE_DMA
315  .dma_zone_size = SZ_256M,
316 #endif
317  .restart = realview_pba8_restart,
318 MACHINE_END
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