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1/*
2 * Emma Mobile EV2 processor support
3 *
4 * Copyright (C) 2012 Magnus Damm
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19#include <linux/kernel.h>
20#include <linux/init.h>
21#include <linux/interrupt.h>
22#include <linux/irq.h>
23#include <linux/platform_device.h>
24#include <linux/platform_data/gpio-em.h>
25#include <linux/of_platform.h>
26#include <linux/delay.h>
27#include <linux/input.h>
28#include <linux/io.h>
29#include <linux/of_irq.h>
30#include <mach/hardware.h>
31#include <mach/common.h>
32#include <mach/emev2.h>
33#include <mach/irqs.h>
34#include <asm/mach-types.h>
35#include <asm/mach/arch.h>
36#include <asm/mach/map.h>
37#include <asm/mach/time.h>
38#include <asm/hardware/gic.h>
39
40static struct map_desc emev2_io_desc[] __initdata = {
41#ifdef CONFIG_SMP
42 /* 128K entity map for 0xe0100000 (SMU) */
43 {
44 .virtual = 0xe0100000,
45 .pfn = __phys_to_pfn(0xe0100000),
46 .length = SZ_128K,
47 .type = MT_DEVICE
48 },
49 /* 2M mapping for SCU + L2 controller */
50 {
51 .virtual = 0xf0000000,
52 .pfn = __phys_to_pfn(0x1e000000),
53 .length = SZ_2M,
54 .type = MT_DEVICE
55 },
56#endif
57};
58
59void __init emev2_map_io(void)
60{
61 iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
62}
63
64/* UART */
65static struct resource uart0_resources[] = {
66 [0] = {
67 .start = 0xe1020000,
68 .end = 0xe1020037,
69 .flags = IORESOURCE_MEM,
70 },
71 [1] = {
72 .start = 40,
73 .flags = IORESOURCE_IRQ,
74 }
75};
76
77static struct platform_device uart0_device = {
78 .name = "serial8250-em",
79 .id = 0,
80 .num_resources = ARRAY_SIZE(uart0_resources),
81 .resource = uart0_resources,
82};
83
84static struct resource uart1_resources[] = {
85 [0] = {
86 .start = 0xe1030000,
87 .end = 0xe1030037,
88 .flags = IORESOURCE_MEM,
89 },
90 [1] = {
91 .start = 41,
92 .flags = IORESOURCE_IRQ,
93 }
94};
95
96static struct platform_device uart1_device = {
97 .name = "serial8250-em",
98 .id = 1,
99 .num_resources = ARRAY_SIZE(uart1_resources),
100 .resource = uart1_resources,
101};
102
103static struct resource uart2_resources[] = {
104 [0] = {
105 .start = 0xe1040000,
106 .end = 0xe1040037,
107 .flags = IORESOURCE_MEM,
108 },
109 [1] = {
110 .start = 42,
111 .flags = IORESOURCE_IRQ,
112 }
113};
114
115static struct platform_device uart2_device = {
116 .name = "serial8250-em",
117 .id = 2,
118 .num_resources = ARRAY_SIZE(uart2_resources),
119 .resource = uart2_resources,
120};
121
122static struct resource uart3_resources[] = {
123 [0] = {
124 .start = 0xe1050000,
125 .end = 0xe1050037,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = 43,
130 .flags = IORESOURCE_IRQ,
131 }
132};
133
134static struct platform_device uart3_device = {
135 .name = "serial8250-em",
136 .id = 3,
137 .num_resources = ARRAY_SIZE(uart3_resources),
138 .resource = uart3_resources,
139};
140
141/* STI */
142static struct resource sti_resources[] = {
143 [0] = {
144 .name = "STI",
145 .start = 0xe0180000,
146 .end = 0xe0180053,
147 .flags = IORESOURCE_MEM,
148 },
149 [1] = {
150 .start = 157,
151 .flags = IORESOURCE_IRQ,
152 },
153};
154
155static struct platform_device sti_device = {
156 .name = "em_sti",
157 .id = 0,
158 .resource = sti_resources,
159 .num_resources = ARRAY_SIZE(sti_resources),
160};
161
162
163/* GIO */
164static struct gpio_em_config gio0_config = {
165 .gpio_base = 0,
166 .irq_base = EMEV2_GPIO_IRQ(0),
167 .number_of_pins = 32,
168};
169
170static struct resource gio0_resources[] = {
171 [0] = {
172 .name = "GIO_000",
173 .start = 0xe0050000,
174 .end = 0xe005002b,
175 .flags = IORESOURCE_MEM,
176 },
177 [1] = {
178 .name = "GIO_000",
179 .start = 0xe0050040,
180 .end = 0xe005005f,
181 .flags = IORESOURCE_MEM,
182 },
183 [2] = {
184 .start = 99,
185 .flags = IORESOURCE_IRQ,
186 },
187 [3] = {
188 .start = 100,
189 .flags = IORESOURCE_IRQ,
190 },
191};
192
193static struct platform_device gio0_device = {
194 .name = "em_gio",
195 .id = 0,
196 .resource = gio0_resources,
197 .num_resources = ARRAY_SIZE(gio0_resources),
198 .dev = {
199 .platform_data = &gio0_config,
200 },
201};
202
203static struct gpio_em_config gio1_config = {
204 .gpio_base = 32,
205 .irq_base = EMEV2_GPIO_IRQ(32),
206 .number_of_pins = 32,
207};
208
209static struct resource gio1_resources[] = {
210 [0] = {
211 .name = "GIO_032",
212 .start = 0xe0050080,
213 .end = 0xe00500ab,
214 .flags = IORESOURCE_MEM,
215 },
216 [1] = {
217 .name = "GIO_032",
218 .start = 0xe00500c0,
219 .end = 0xe00500df,
220 .flags = IORESOURCE_MEM,
221 },
222 [2] = {
223 .start = 101,
224 .flags = IORESOURCE_IRQ,
225 },
226 [3] = {
227 .start = 102,
228 .flags = IORESOURCE_IRQ,
229 },
230};
231
232static struct platform_device gio1_device = {
233 .name = "em_gio",
234 .id = 1,
235 .resource = gio1_resources,
236 .num_resources = ARRAY_SIZE(gio1_resources),
237 .dev = {
238 .platform_data = &gio1_config,
239 },
240};
241
242static struct gpio_em_config gio2_config = {
243 .gpio_base = 64,
244 .irq_base = EMEV2_GPIO_IRQ(64),
245 .number_of_pins = 32,
246};
247
248static struct resource gio2_resources[] = {
249 [0] = {
250 .name = "GIO_064",
251 .start = 0xe0050100,
252 .end = 0xe005012b,
253 .flags = IORESOURCE_MEM,
254 },
255 [1] = {
256 .name = "GIO_064",
257 .start = 0xe0050140,
258 .end = 0xe005015f,
259 .flags = IORESOURCE_MEM,
260 },
261 [2] = {
262 .start = 103,
263 .flags = IORESOURCE_IRQ,
264 },
265 [3] = {
266 .start = 104,
267 .flags = IORESOURCE_IRQ,
268 },
269};
270
271static struct platform_device gio2_device = {
272 .name = "em_gio",
273 .id = 2,
274 .resource = gio2_resources,
275 .num_resources = ARRAY_SIZE(gio2_resources),
276 .dev = {
277 .platform_data = &gio2_config,
278 },
279};
280
281static struct gpio_em_config gio3_config = {
282 .gpio_base = 96,
283 .irq_base = EMEV2_GPIO_IRQ(96),
284 .number_of_pins = 32,
285};
286
287static struct resource gio3_resources[] = {
288 [0] = {
289 .name = "GIO_096",
290 .start = 0xe0050100,
291 .end = 0xe005012b,
292 .flags = IORESOURCE_MEM,
293 },
294 [1] = {
295 .name = "GIO_096",
296 .start = 0xe0050140,
297 .end = 0xe005015f,
298 .flags = IORESOURCE_MEM,
299 },
300 [2] = {
301 .start = 105,
302 .flags = IORESOURCE_IRQ,
303 },
304 [3] = {
305 .start = 106,
306 .flags = IORESOURCE_IRQ,
307 },
308};
309
310static struct platform_device gio3_device = {
311 .name = "em_gio",
312 .id = 3,
313 .resource = gio3_resources,
314 .num_resources = ARRAY_SIZE(gio3_resources),
315 .dev = {
316 .platform_data = &gio3_config,
317 },
318};
319
320static struct gpio_em_config gio4_config = {
321 .gpio_base = 128,
322 .irq_base = EMEV2_GPIO_IRQ(128),
323 .number_of_pins = 31,
324};
325
326static struct resource gio4_resources[] = {
327 [0] = {
328 .name = "GIO_128",
329 .start = 0xe0050200,
330 .end = 0xe005022b,
331 .flags = IORESOURCE_MEM,
332 },
333 [1] = {
334 .name = "GIO_128",
335 .start = 0xe0050240,
336 .end = 0xe005025f,
337 .flags = IORESOURCE_MEM,
338 },
339 [2] = {
340 .start = 107,
341 .flags = IORESOURCE_IRQ,
342 },
343 [3] = {
344 .start = 108,
345 .flags = IORESOURCE_IRQ,
346 },
347};
348
349static struct platform_device gio4_device = {
350 .name = "em_gio",
351 .id = 4,
352 .resource = gio4_resources,
353 .num_resources = ARRAY_SIZE(gio4_resources),
354 .dev = {
355 .platform_data = &gio4_config,
356 },
357};
358
359static struct platform_device *emev2_early_devices[] __initdata = {
360 &uart0_device,
361 &uart1_device,
362 &uart2_device,
363 &uart3_device,
364};
365
366static struct platform_device *emev2_late_devices[] __initdata = {
367 &sti_device,
368 &gio0_device,
369 &gio1_device,
370 &gio2_device,
371 &gio3_device,
372 &gio4_device,
373};
374
375void __init emev2_add_standard_devices(void)
376{
377 emev2_clock_init();
378
379 platform_add_devices(emev2_early_devices,
380 ARRAY_SIZE(emev2_early_devices));
381
382 platform_add_devices(emev2_late_devices,
383 ARRAY_SIZE(emev2_late_devices));
384}
385
386void __init emev2_init_delay(void)
387{
388 shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
389}
390
391void __init emev2_add_early_devices(void)
392{
393 emev2_init_delay();
394
395 early_platform_add_devices(emev2_early_devices,
396 ARRAY_SIZE(emev2_early_devices));
397
398 /* setup early console here as well */
399 shmobile_setup_console();
400}
401
402void __init emev2_init_irq(void)
403{
404 void __iomem *gic_dist_base;
405 void __iomem *gic_cpu_base;
406
407 /* Static mappings, never released */
408 gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
409 gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
410 BUG_ON(!gic_dist_base || !gic_cpu_base);
411
412 /* Use GIC to handle interrupts */
413 gic_init(0, 29, gic_dist_base, gic_cpu_base);
414}
415
416#ifdef CONFIG_USE_OF
417static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
418 { }
419};
420
421void __init emev2_add_standard_devices_dt(void)
422{
423 of_platform_populate(NULL, of_default_bus_match_table,
424 emev2_auxdata_lookup, NULL);
425}
426
427static const struct of_device_id emev2_dt_irq_match[] = {
428 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
429 {},
430};
431
432static const char *emev2_boards_compat_dt[] __initdata = {
433 "renesas,emev2",
434 NULL,
435};
436
437void __init emev2_init_irq_dt(void)
438{
439 of_irq_init(emev2_dt_irq_match);
440}
441
442DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
443 .init_early = emev2_init_delay,
444 .nr_irqs = NR_IRQS_LEGACY,
445 .init_irq = emev2_init_irq_dt,
446 .handle_irq = gic_handle_irq,
447 .init_machine = emev2_add_standard_devices_dt,
448 .timer = &shmobile_timer,
449 .dt_compat = emev2_boards_compat_dt,
450MACHINE_END
451
452#endif /* CONFIG_USE_OF */
1/*
2 * Emma Mobile EV2 processor support
3 *
4 * Copyright (C) 2012 Magnus Damm
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/mm.h>
18#include <asm/mach-types.h>
19#include <asm/mach/arch.h>
20#include <asm/mach/map.h>
21
22#include "common.h"
23#include "emev2.h"
24
25static const char *const emev2_boards_compat_dt[] __initconst = {
26 "renesas,emev2",
27 NULL,
28};
29
30DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
31 .smp = smp_ops(emev2_smp_ops),
32 .init_early = shmobile_init_delay,
33 .init_late = shmobile_init_late,
34 .dt_compat = emev2_boards_compat_dt,
35MACHINE_END