1 /*
2 * Versatile Express V2M Motherboard Support
3 */
4 #include <linux/device.h>
5 #include <linux/amba/bus.h>
6 #include <linux/amba/mmci.h>
7 #include <linux/io.h>
8 #include <linux/smp.h>
9 #include <linux/init.h>
10 #include <linux/of_address.h>
11 #include <linux/of_fdt.h>
12 #include <linux/of_irq.h>
13 #include <linux/of_platform.h>
14 #include <linux/platform_device.h>
15 #include <linux/ata_platform.h>
16 #include <linux/smsc911x.h>
17 #include <linux/spinlock.h>
18 #include <linux/usb/isp1760.h>
19 #include <linux/mtd/physmap.h>
20 #include <linux/regulator/fixed.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/vexpress.h>
23 #include <linux/clkdev.h>
24
25 #include <asm/mach-types.h>
26 #include <asm/sizes.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/time.h>
30 #include <asm/hardware/arm_timer.h>
31 #include <asm/hardware/cache-l2x0.h>
32 #include <asm/hardware/timer-sp.h>
33
34 #include <mach/ct-ca9x4.h>
35 #include <mach/motherboard.h>
36
37 #include <plat/sched_clock.h>
38 #include <plat/platsmp.h>
39
40 #include "core.h"
41
42 #define V2M_PA_CS0 0x40000000
43 #define V2M_PA_CS1 0x44000000
44 #define V2M_PA_CS2 0x48000000
45 #define V2M_PA_CS3 0x4c000000
46 #define V2M_PA_CS7 0x10000000
47
48 static struct map_desc v2m_io_desc[] __initdata = {
49 {
50 .virtual = V2M_PERIPH,
51 .pfn = __phys_to_pfn(V2M_PA_CS7),
52 .length = SZ_128K,
53 .type = MT_DEVICE,
54 },
55 };
56
v2m_sp804_init(void __iomem * base,unsigned int irq)57 static void __init v2m_sp804_init(void __iomem *base, unsigned int irq)
58 {
59 if (WARN_ON(!base || irq == NO_IRQ))
60 return;
61
62 sp804_clocksource_init(base + TIMER_2_BASE, "v2m-timer1");
63 sp804_clockevents_init(base + TIMER_1_BASE, irq, "v2m-timer0");
64 }
65
66
67 static struct resource v2m_pcie_i2c_resource = {
68 .start = V2M_SERIAL_BUS_PCI,
69 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
70 .flags = IORESOURCE_MEM,
71 };
72
73 static struct platform_device v2m_pcie_i2c_device = {
74 .name = "versatile-i2c",
75 .id = 0,
76 .num_resources = 1,
77 .resource = &v2m_pcie_i2c_resource,
78 };
79
80 static struct resource v2m_ddc_i2c_resource = {
81 .start = V2M_SERIAL_BUS_DVI,
82 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
83 .flags = IORESOURCE_MEM,
84 };
85
86 static struct platform_device v2m_ddc_i2c_device = {
87 .name = "versatile-i2c",
88 .id = 1,
89 .num_resources = 1,
90 .resource = &v2m_ddc_i2c_resource,
91 };
92
93 static struct resource v2m_eth_resources[] = {
94 {
95 .start = V2M_LAN9118,
96 .end = V2M_LAN9118 + SZ_64K - 1,
97 .flags = IORESOURCE_MEM,
98 }, {
99 .start = IRQ_V2M_LAN9118,
100 .end = IRQ_V2M_LAN9118,
101 .flags = IORESOURCE_IRQ,
102 },
103 };
104
105 static struct smsc911x_platform_config v2m_eth_config = {
106 .flags = SMSC911X_USE_32BIT,
107 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
108 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
109 .phy_interface = PHY_INTERFACE_MODE_MII,
110 };
111
112 static struct platform_device v2m_eth_device = {
113 .name = "smsc911x",
114 .id = -1,
115 .resource = v2m_eth_resources,
116 .num_resources = ARRAY_SIZE(v2m_eth_resources),
117 .dev.platform_data = &v2m_eth_config,
118 };
119
120 static struct regulator_consumer_supply v2m_eth_supplies[] = {
121 REGULATOR_SUPPLY("vddvario", "smsc911x"),
122 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
123 };
124
125 static struct resource v2m_usb_resources[] = {
126 {
127 .start = V2M_ISP1761,
128 .end = V2M_ISP1761 + SZ_128K - 1,
129 .flags = IORESOURCE_MEM,
130 }, {
131 .start = IRQ_V2M_ISP1761,
132 .end = IRQ_V2M_ISP1761,
133 .flags = IORESOURCE_IRQ,
134 },
135 };
136
137 static struct isp1760_platform_data v2m_usb_config = {
138 .is_isp1761 = true,
139 .bus_width_16 = false,
140 .port1_otg = true,
141 .analog_oc = false,
142 .dack_polarity_high = false,
143 .dreq_polarity_high = false,
144 };
145
146 static struct platform_device v2m_usb_device = {
147 .name = "isp1760",
148 .id = -1,
149 .resource = v2m_usb_resources,
150 .num_resources = ARRAY_SIZE(v2m_usb_resources),
151 .dev.platform_data = &v2m_usb_config,
152 };
153
154 static struct physmap_flash_data v2m_flash_data = {
155 .width = 4,
156 };
157
158 static struct resource v2m_flash_resources[] = {
159 {
160 .start = V2M_NOR0,
161 .end = V2M_NOR0 + SZ_64M - 1,
162 .flags = IORESOURCE_MEM,
163 }, {
164 .start = V2M_NOR1,
165 .end = V2M_NOR1 + SZ_64M - 1,
166 .flags = IORESOURCE_MEM,
167 },
168 };
169
170 static struct platform_device v2m_flash_device = {
171 .name = "physmap-flash",
172 .id = -1,
173 .resource = v2m_flash_resources,
174 .num_resources = ARRAY_SIZE(v2m_flash_resources),
175 .dev.platform_data = &v2m_flash_data,
176 };
177
178 static struct pata_platform_info v2m_pata_data = {
179 .ioport_shift = 2,
180 };
181
182 static struct resource v2m_pata_resources[] = {
183 {
184 .start = V2M_CF,
185 .end = V2M_CF + 0xff,
186 .flags = IORESOURCE_MEM,
187 }, {
188 .start = V2M_CF + 0x100,
189 .end = V2M_CF + SZ_4K - 1,
190 .flags = IORESOURCE_MEM,
191 },
192 };
193
194 static struct platform_device v2m_cf_device = {
195 .name = "pata_platform",
196 .id = -1,
197 .resource = v2m_pata_resources,
198 .num_resources = ARRAY_SIZE(v2m_pata_resources),
199 .dev.platform_data = &v2m_pata_data,
200 };
201
202 static struct mmci_platform_data v2m_mmci_data = {
203 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
204 .status = vexpress_get_mci_cardin,
205 .gpio_cd = -1,
206 .gpio_wp = -1,
207 };
208
209 static struct resource v2m_sysreg_resources[] = {
210 {
211 .start = V2M_SYSREGS,
212 .end = V2M_SYSREGS + 0xfff,
213 .flags = IORESOURCE_MEM,
214 },
215 };
216
217 static struct platform_device v2m_sysreg_device = {
218 .name = "vexpress-sysreg",
219 .id = -1,
220 .resource = v2m_sysreg_resources,
221 .num_resources = ARRAY_SIZE(v2m_sysreg_resources),
222 };
223
224 static struct platform_device v2m_muxfpga_device = {
225 .name = "vexpress-muxfpga",
226 .id = 0,
227 .num_resources = 1,
228 .resource = (struct resource []) {
229 VEXPRESS_RES_FUNC(0, 7),
230 }
231 };
232
233 static struct platform_device v2m_shutdown_device = {
234 .name = "vexpress-shutdown",
235 .id = 0,
236 .num_resources = 1,
237 .resource = (struct resource []) {
238 VEXPRESS_RES_FUNC(0, 8),
239 }
240 };
241
242 static struct platform_device v2m_reboot_device = {
243 .name = "vexpress-reboot",
244 .id = 0,
245 .num_resources = 1,
246 .resource = (struct resource []) {
247 VEXPRESS_RES_FUNC(0, 9),
248 }
249 };
250
251 static struct platform_device v2m_dvimode_device = {
252 .name = "vexpress-dvimode",
253 .id = 0,
254 .num_resources = 1,
255 .resource = (struct resource []) {
256 VEXPRESS_RES_FUNC(0, 11),
257 }
258 };
259
260 static AMBA_APB_DEVICE(aaci, "mb:aaci", 0, V2M_AACI, IRQ_V2M_AACI, NULL);
261 static AMBA_APB_DEVICE(mmci, "mb:mmci", 0, V2M_MMCI, IRQ_V2M_MMCI, &v2m_mmci_data);
262 static AMBA_APB_DEVICE(kmi0, "mb:kmi0", 0, V2M_KMI0, IRQ_V2M_KMI0, NULL);
263 static AMBA_APB_DEVICE(kmi1, "mb:kmi1", 0, V2M_KMI1, IRQ_V2M_KMI1, NULL);
264 static AMBA_APB_DEVICE(uart0, "mb:uart0", 0, V2M_UART0, IRQ_V2M_UART0, NULL);
265 static AMBA_APB_DEVICE(uart1, "mb:uart1", 0, V2M_UART1, IRQ_V2M_UART1, NULL);
266 static AMBA_APB_DEVICE(uart2, "mb:uart2", 0, V2M_UART2, IRQ_V2M_UART2, NULL);
267 static AMBA_APB_DEVICE(uart3, "mb:uart3", 0, V2M_UART3, IRQ_V2M_UART3, NULL);
268 static AMBA_APB_DEVICE(wdt, "mb:wdt", 0, V2M_WDT, IRQ_V2M_WDT, NULL);
269 static AMBA_APB_DEVICE(rtc, "mb:rtc", 0, V2M_RTC, IRQ_V2M_RTC, NULL);
270
271 static struct amba_device *v2m_amba_devs[] __initdata = {
272 &aaci_device,
273 &mmci_device,
274 &kmi0_device,
275 &kmi1_device,
276 &uart0_device,
277 &uart1_device,
278 &uart2_device,
279 &uart3_device,
280 &wdt_device,
281 &rtc_device,
282 };
283
v2m_timer_init(void)284 static void __init v2m_timer_init(void)
285 {
286 vexpress_clk_init(ioremap(V2M_SYSCTL, SZ_4K));
287 v2m_sp804_init(ioremap(V2M_TIMER01, SZ_4K), IRQ_V2M_TIMER0);
288 }
289
v2m_init_early(void)290 static void __init v2m_init_early(void)
291 {
292 if (ct_desc->init_early)
293 ct_desc->init_early();
294 versatile_sched_clock_init(vexpress_get_24mhz_clock_base(), 24000000);
295 }
296
297 struct ct_desc *ct_desc;
298
299 static struct ct_desc *ct_descs[] __initdata = {
300 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
301 &ct_ca9x4_desc,
302 #endif
303 };
304
v2m_populate_ct_desc(void)305 static void __init v2m_populate_ct_desc(void)
306 {
307 int i;
308 u32 current_tile_id;
309
310 ct_desc = NULL;
311 current_tile_id = vexpress_get_procid(VEXPRESS_SITE_MASTER)
312 & V2M_CT_ID_MASK;
313
314 for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
315 if (ct_descs[i]->id == current_tile_id)
316 ct_desc = ct_descs[i];
317
318 if (!ct_desc)
319 panic("vexpress: this kernel does not support core tile ID 0x%08x when booting via ATAGs.\n"
320 "You may need a device tree blob or a different kernel to boot on this board.\n",
321 current_tile_id);
322 }
323
v2m_map_io(void)324 static void __init v2m_map_io(void)
325 {
326 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
327 vexpress_sysreg_early_init(ioremap(V2M_SYSREGS, SZ_4K));
328 v2m_populate_ct_desc();
329 ct_desc->map_io();
330 }
331
v2m_init_irq(void)332 static void __init v2m_init_irq(void)
333 {
334 ct_desc->init_irq();
335 }
336
v2m_init(void)337 static void __init v2m_init(void)
338 {
339 int i;
340
341 regulator_register_fixed(0, v2m_eth_supplies,
342 ARRAY_SIZE(v2m_eth_supplies));
343
344 platform_device_register(&v2m_sysreg_device);
345 platform_device_register(&v2m_pcie_i2c_device);
346 platform_device_register(&v2m_ddc_i2c_device);
347 platform_device_register(&v2m_flash_device);
348 platform_device_register(&v2m_cf_device);
349 platform_device_register(&v2m_eth_device);
350 platform_device_register(&v2m_usb_device);
351
352 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
353 amba_device_register(v2m_amba_devs[i], &iomem_resource);
354
355 vexpress_syscfg_device_register(&v2m_muxfpga_device);
356 vexpress_syscfg_device_register(&v2m_shutdown_device);
357 vexpress_syscfg_device_register(&v2m_reboot_device);
358 vexpress_syscfg_device_register(&v2m_dvimode_device);
359
360 ct_desc->init_tile();
361 }
362
363 MACHINE_START(VEXPRESS, "ARM-Versatile Express")
364 .atag_offset = 0x100,
365 .smp = smp_ops(vexpress_smp_ops),
366 .map_io = v2m_map_io,
367 .init_early = v2m_init_early,
368 .init_irq = v2m_init_irq,
369 .init_time = v2m_timer_init,
370 .init_machine = v2m_init,
371 MACHINE_END
372
373 static void __init v2m_dt_init(void)
374 {
375 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
376 }
377
378 static const char * const v2m_dt_match[] __initconst = {
379 "arm,vexpress",
380 NULL,
381 };
382
383 DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
384 .dt_compat = v2m_dt_match,
385 .l2c_aux_val = 0x00400000,
386 .l2c_aux_mask = 0xfe0fffff,
387 .smp = smp_ops(vexpress_smp_dt_ops),
388 .smp_init = smp_init_ops(vexpress_smp_init_ops),
389 .init_machine = v2m_dt_init,
390 MACHINE_END
391