1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2005 Nokia Corporation
4 * Author: Paul Mundt <paul.mundt@nokia.com>
5 *
6 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
7 *
8 * Modified from the original mach-omap/omap2/board-generic.c did by Paul
9 * to support the OMAP2+ device tree boards with an unique board file.
10 */
11#include <linux/io.h>
12#include <linux/irqdomain.h>
13#include <linux/clocksource.h>
14#include <linux/clockchips.h>
15#include <linux/mod_devicetable.h>
16
17#include <asm/setup.h>
18#include <asm/mach/arch.h>
19#include <asm/system_info.h>
20
21#include "common.h"
22
23static const struct of_device_id omap_dt_match_table[] __initconst = {
24 { .compatible = "simple-bus", },
25 { .compatible = "ti,omap-infra", },
26 { }
27};
28
29static void __init __maybe_unused omap_generic_init(void)
30{
31 pdata_quirks_init(omap_dt_match_table);
32 omap_soc_device_init();
33}
34
35/* Clocks are needed early, see drivers/clocksource for the rest */
36static void __init __maybe_unused omap_init_time_of(void)
37{
38 omap_clk_init();
39 timer_probe();
40}
41
42/* Used by am437x for ARM timer in non-SMP configurations */
43#if !defined(CONFIG_SMP) && defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
44void tick_broadcast(const struct cpumask *mask)
45{
46}
47#endif
48
49#ifdef CONFIG_SOC_OMAP2420
50static const char *const omap242x_boards_compat[] __initconst = {
51 "ti,omap2420",
52 NULL,
53};
54
55DT_MACHINE_START(OMAP242X_DT, "Generic OMAP2420 (Flattened Device Tree)")
56 .reserve = omap_reserve,
57 .map_io = omap242x_map_io,
58 .init_early = omap2420_init_early,
59 .init_machine = omap_generic_init,
60 .init_time = omap_init_time_of,
61 .dt_compat = omap242x_boards_compat,
62 .restart = omap2xxx_restart,
63MACHINE_END
64#endif
65
66#ifdef CONFIG_SOC_OMAP2430
67static const char *const omap243x_boards_compat[] __initconst = {
68 "ti,omap2430",
69 NULL,
70};
71
72DT_MACHINE_START(OMAP243X_DT, "Generic OMAP2430 (Flattened Device Tree)")
73 .reserve = omap_reserve,
74 .map_io = omap243x_map_io,
75 .init_early = omap2430_init_early,
76 .init_machine = omap_generic_init,
77 .init_time = omap_init_time_of,
78 .dt_compat = omap243x_boards_compat,
79 .restart = omap2xxx_restart,
80MACHINE_END
81#endif
82
83#ifdef CONFIG_ARCH_OMAP3
84/* Some boards need board name for legacy userspace in /proc/cpuinfo */
85static const char *const n900_boards_compat[] __initconst = {
86 "nokia,omap3-n900",
87 NULL,
88};
89
90/* Set system_rev from atags */
91static void __init rx51_set_system_rev(const struct tag *tags)
92{
93 const struct tag *tag;
94
95 if (tags->hdr.tag != ATAG_CORE)
96 return;
97
98 for_each_tag(tag, tags) {
99 if (tag->hdr.tag == ATAG_REVISION) {
100 system_rev = tag->u.revision.rev;
101 break;
102 }
103 }
104}
105
106/* Legacy userspace on Nokia N900 needs ATAGS exported in /proc/atags,
107 * save them while the data is still not overwritten
108 */
109static void __init rx51_reserve(void)
110{
111 const struct tag *tags = (const struct tag *)(PAGE_OFFSET + 0x100);
112
113 save_atags(tags);
114 rx51_set_system_rev(tags);
115 omap_reserve();
116}
117
118DT_MACHINE_START(OMAP3_N900_DT, "Nokia RX-51 board")
119 .reserve = rx51_reserve,
120 .map_io = omap3_map_io,
121 .init_early = omap3430_init_early,
122 .init_machine = omap_generic_init,
123 .init_late = omap3_init_late,
124 .init_time = omap_init_time_of,
125 .dt_compat = n900_boards_compat,
126 .restart = omap3xxx_restart,
127MACHINE_END
128
129/* Generic omap3 boards, most boards can use these */
130static const char *const omap3_boards_compat[] __initconst = {
131 "ti,omap3430",
132 "ti,omap3",
133 NULL,
134};
135
136DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
137 .reserve = omap_reserve,
138 .map_io = omap3_map_io,
139 .init_early = omap3430_init_early,
140 .init_machine = omap_generic_init,
141 .init_late = omap3_init_late,
142 .init_time = omap_init_time_of,
143 .dt_compat = omap3_boards_compat,
144 .restart = omap3xxx_restart,
145MACHINE_END
146
147static const char *const omap36xx_boards_compat[] __initconst = {
148 "ti,omap3630",
149 "ti,omap36xx",
150 NULL,
151};
152
153DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
154 .reserve = omap_reserve,
155 .map_io = omap3_map_io,
156 .init_early = omap3630_init_early,
157 .init_machine = omap_generic_init,
158 .init_late = omap3_init_late,
159 .init_time = omap_init_time_of,
160 .dt_compat = omap36xx_boards_compat,
161 .restart = omap3xxx_restart,
162MACHINE_END
163
164static const char *const omap3_gp_boards_compat[] __initconst = {
165 "ti,omap3-beagle",
166 "timll,omap3-devkit8000",
167 NULL,
168};
169
170DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)")
171 .reserve = omap_reserve,
172 .map_io = omap3_map_io,
173 .init_early = omap3430_init_early,
174 .init_machine = omap_generic_init,
175 .init_late = omap3_init_late,
176 .init_time = omap_init_time_of,
177 .dt_compat = omap3_gp_boards_compat,
178 .restart = omap3xxx_restart,
179MACHINE_END
180
181static const char *const am3517_boards_compat[] __initconst = {
182 "ti,am3517",
183 NULL,
184};
185
186DT_MACHINE_START(AM3517_DT, "Generic AM3517 (Flattened Device Tree)")
187 .reserve = omap_reserve,
188 .map_io = omap3_map_io,
189 .init_early = am35xx_init_early,
190 .init_machine = omap_generic_init,
191 .init_late = omap3_init_late,
192 .init_time = omap_init_time_of,
193 .dt_compat = am3517_boards_compat,
194 .restart = omap3xxx_restart,
195MACHINE_END
196#endif
197
198#ifdef CONFIG_SOC_TI81XX
199static const char *const ti814x_boards_compat[] __initconst = {
200 "ti,dm8148",
201 "ti,dm814",
202 NULL,
203};
204
205DT_MACHINE_START(TI814X_DT, "Generic ti814x (Flattened Device Tree)")
206 .reserve = omap_reserve,
207 .map_io = ti81xx_map_io,
208 .init_early = ti814x_init_early,
209 .init_machine = omap_generic_init,
210 .init_late = ti81xx_init_late,
211 .init_time = omap_init_time_of,
212 .dt_compat = ti814x_boards_compat,
213 .restart = ti81xx_restart,
214MACHINE_END
215
216static const char *const ti816x_boards_compat[] __initconst = {
217 "ti,dm8168",
218 "ti,dm816",
219 NULL,
220};
221
222DT_MACHINE_START(TI816X_DT, "Generic ti816x (Flattened Device Tree)")
223 .reserve = omap_reserve,
224 .map_io = ti81xx_map_io,
225 .init_early = ti816x_init_early,
226 .init_machine = omap_generic_init,
227 .init_late = ti81xx_init_late,
228 .init_time = omap_init_time_of,
229 .dt_compat = ti816x_boards_compat,
230 .restart = ti81xx_restart,
231MACHINE_END
232#endif
233
234#ifdef CONFIG_SOC_AM33XX
235static const char *const am33xx_boards_compat[] __initconst = {
236 "ti,am33xx",
237 NULL,
238};
239
240DT_MACHINE_START(AM33XX_DT, "Generic AM33XX (Flattened Device Tree)")
241 .reserve = omap_reserve,
242 .map_io = am33xx_map_io,
243 .init_early = am33xx_init_early,
244 .init_machine = omap_generic_init,
245 .init_late = am33xx_init_late,
246 .init_time = omap_init_time_of,
247 .dt_compat = am33xx_boards_compat,
248 .restart = am33xx_restart,
249 /*
250 * Historically am33xx supported only REBOOT_WARM even though default
251 * reboot_mode was REBOOT_COLD. Reflect legacy de-facto behaviour in
252 * SYSFS.
253 */
254 .reboot_mode = REBOOT_WARM,
255MACHINE_END
256#endif
257
258#ifdef CONFIG_ARCH_OMAP4
259static const char *const omap4_boards_compat[] __initconst = {
260 "ti,omap4460",
261 "ti,omap4430",
262 "ti,omap4",
263 NULL,
264};
265
266DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
267 .l2c_aux_val = OMAP_L2C_AUX_CTRL,
268 .l2c_aux_mask = 0xcf9fffff,
269 .l2c_write_sec = omap4_l2c310_write_sec,
270 .reserve = omap_reserve,
271 .smp = smp_ops(omap4_smp_ops),
272 .map_io = omap4_map_io,
273 .init_early = omap4430_init_early,
274 .init_irq = omap_gic_of_init,
275 .init_machine = omap_generic_init,
276 .init_late = omap4430_init_late,
277 .init_time = omap_init_time_of,
278 .dt_compat = omap4_boards_compat,
279 .restart = omap44xx_restart,
280MACHINE_END
281#endif
282
283#ifdef CONFIG_SOC_OMAP5
284static const char *const omap5_boards_compat[] __initconst = {
285 "ti,omap5432",
286 "ti,omap5430",
287 "ti,omap5",
288 NULL,
289};
290
291DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
292#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
293 .dma_zone_size = SZ_2G,
294#endif
295 .reserve = omap_reserve,
296 .smp = smp_ops(omap4_smp_ops),
297 .map_io = omap5_map_io,
298 .init_early = omap5_init_early,
299 .init_irq = omap_gic_of_init,
300 .init_machine = omap_generic_init,
301 .init_late = omap5_init_late,
302 .init_time = omap5_realtime_timer_init,
303 .dt_compat = omap5_boards_compat,
304 .restart = omap44xx_restart,
305MACHINE_END
306#endif
307
308#ifdef CONFIG_SOC_AM43XX
309static const char *const am43_boards_compat[] __initconst = {
310 "ti,am4372",
311 "ti,am43",
312 NULL,
313};
314
315DT_MACHINE_START(AM43_DT, "Generic AM43 (Flattened Device Tree)")
316 .l2c_aux_val = OMAP_L2C_AUX_CTRL,
317 .l2c_aux_mask = 0xcf9fffff,
318 .l2c_write_sec = omap4_l2c310_write_sec,
319 .map_io = am33xx_map_io,
320 .init_early = am43xx_init_early,
321 .init_late = am43xx_init_late,
322 .init_irq = omap_gic_of_init,
323 .init_machine = omap_generic_init,
324 .init_time = omap_init_time_of,
325 .dt_compat = am43_boards_compat,
326 .restart = omap44xx_restart,
327MACHINE_END
328#endif
329
330#ifdef CONFIG_SOC_DRA7XX
331static const char *const dra74x_boards_compat[] __initconst = {
332 "ti,dra762",
333 "ti,am5728",
334 "ti,am5726",
335 "ti,dra742",
336 "ti,dra7",
337 NULL,
338};
339
340DT_MACHINE_START(DRA74X_DT, "Generic DRA74X (Flattened Device Tree)")
341#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
342 .dma_zone_size = SZ_2G,
343#endif
344 .reserve = omap_reserve,
345 .smp = smp_ops(omap4_smp_ops),
346 .map_io = dra7xx_map_io,
347 .init_early = dra7xx_init_early,
348 .init_late = dra7xx_init_late,
349 .init_irq = omap_gic_of_init,
350 .init_machine = omap_generic_init,
351 .init_time = omap5_realtime_timer_init,
352 .dt_compat = dra74x_boards_compat,
353 .restart = omap44xx_restart,
354MACHINE_END
355
356static const char *const dra72x_boards_compat[] __initconst = {
357 "ti,am5718",
358 "ti,am5716",
359 "ti,dra722",
360 "ti,dra718",
361 NULL,
362};
363
364DT_MACHINE_START(DRA72X_DT, "Generic DRA72X (Flattened Device Tree)")
365#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
366 .dma_zone_size = SZ_2G,
367#endif
368 .reserve = omap_reserve,
369 .map_io = dra7xx_map_io,
370 .init_early = dra7xx_init_early,
371 .init_late = dra7xx_init_late,
372 .init_irq = omap_gic_of_init,
373 .init_machine = omap_generic_init,
374 .init_time = omap5_realtime_timer_init,
375 .dt_compat = dra72x_boards_compat,
376 .restart = omap44xx_restart,
377MACHINE_END
378#endif
379

source code of linux/arch/arm/mach-omap2/board-generic.c