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 
23 static const struct of_device_id omap_dt_match_table[] __initconst = {
24 	{ .compatible = "simple-bus", },
25 	{ .compatible = "ti,omap-infra", },
26 	{ }
27 };
28 
29 static 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 */
36 static 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)
44 void tick_broadcast(const struct cpumask *mask)
45 {
46 }
47 #endif
48 
49 #ifdef CONFIG_SOC_OMAP2420
50 static const char *const omap242x_boards_compat[] __initconst = {
51 	"ti,omap2420",
52 	NULL,
53 };
54 
55 DT_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,
63 MACHINE_END
64 #endif
65 
66 #ifdef CONFIG_SOC_OMAP2430
67 static const char *const omap243x_boards_compat[] __initconst = {
68 	"ti,omap2430",
69 	NULL,
70 };
71 
72 DT_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,
80 MACHINE_END
81 #endif
82 
83 #ifdef CONFIG_ARCH_OMAP3
84 /* Some boards need board name for legacy userspace in /proc/cpuinfo */
85 static const char *const n900_boards_compat[] __initconst = {
86 	"nokia,omap3-n900",
87 	NULL,
88 };
89 
90 /* Set system_rev from atags */
91 static 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  */
109 static 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 
118 DT_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,
127 MACHINE_END
128 
129 /* Generic omap3 boards, most boards can use these */
130 static const char *const omap3_boards_compat[] __initconst = {
131 	"ti,omap3430",
132 	"ti,omap3",
133 	NULL,
134 };
135 
136 DT_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,
145 MACHINE_END
146 
147 static const char *const omap36xx_boards_compat[] __initconst = {
148 	"ti,omap3630",
149 	"ti,omap36xx",
150 	NULL,
151 };
152 
153 DT_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,
162 MACHINE_END
163 
164 static const char *const omap3_gp_boards_compat[] __initconst = {
165 	"ti,omap3-beagle",
166 	"timll,omap3-devkit8000",
167 	NULL,
168 };
169 
170 DT_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,
179 MACHINE_END
180 
181 static const char *const am3517_boards_compat[] __initconst = {
182 	"ti,am3517",
183 	NULL,
184 };
185 
186 DT_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,
195 MACHINE_END
196 #endif
197 
198 #ifdef CONFIG_SOC_TI81XX
199 static const char *const ti814x_boards_compat[] __initconst = {
200 	"ti,dm8148",
201 	"ti,dm814",
202 	NULL,
203 };
204 
205 DT_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,
214 MACHINE_END
215 
216 static const char *const ti816x_boards_compat[] __initconst = {
217 	"ti,dm8168",
218 	"ti,dm816",
219 	NULL,
220 };
221 
222 DT_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,
231 MACHINE_END
232 #endif
233 
234 #ifdef CONFIG_SOC_AM33XX
235 static const char *const am33xx_boards_compat[] __initconst = {
236 	"ti,am33xx",
237 	NULL,
238 };
239 
240 DT_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 MACHINE_END
250 #endif
251 
252 #ifdef CONFIG_ARCH_OMAP4
253 static const char *const omap4_boards_compat[] __initconst = {
254 	"ti,omap4460",
255 	"ti,omap4430",
256 	"ti,omap4",
257 	NULL,
258 };
259 
260 DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
261 	.l2c_aux_val	= OMAP_L2C_AUX_CTRL,
262 	.l2c_aux_mask	= 0xcf9fffff,
263 	.l2c_write_sec	= omap4_l2c310_write_sec,
264 	.reserve	= omap_reserve,
265 	.smp		= smp_ops(omap4_smp_ops),
266 	.map_io		= omap4_map_io,
267 	.init_early	= omap4430_init_early,
268 	.init_irq	= omap_gic_of_init,
269 	.init_machine	= omap_generic_init,
270 	.init_late	= omap4430_init_late,
271 	.init_time	= omap_init_time_of,
272 	.dt_compat	= omap4_boards_compat,
273 	.restart	= omap44xx_restart,
274 MACHINE_END
275 #endif
276 
277 #ifdef CONFIG_SOC_OMAP5
278 static const char *const omap5_boards_compat[] __initconst = {
279 	"ti,omap5432",
280 	"ti,omap5430",
281 	"ti,omap5",
282 	NULL,
283 };
284 
285 DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
286 #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
287 	.dma_zone_size	= SZ_2G,
288 #endif
289 	.reserve	= omap_reserve,
290 	.smp		= smp_ops(omap4_smp_ops),
291 	.map_io		= omap5_map_io,
292 	.init_early	= omap5_init_early,
293 	.init_irq	= omap_gic_of_init,
294 	.init_machine	= omap_generic_init,
295 	.init_late	= omap5_init_late,
296 	.init_time	= omap5_realtime_timer_init,
297 	.dt_compat	= omap5_boards_compat,
298 	.restart	= omap44xx_restart,
299 MACHINE_END
300 #endif
301 
302 #ifdef CONFIG_SOC_AM43XX
303 static const char *const am43_boards_compat[] __initconst = {
304 	"ti,am4372",
305 	"ti,am43",
306 	NULL,
307 };
308 
309 DT_MACHINE_START(AM43_DT, "Generic AM43 (Flattened Device Tree)")
310 	.l2c_aux_val	= OMAP_L2C_AUX_CTRL,
311 	.l2c_aux_mask	= 0xcf9fffff,
312 	.l2c_write_sec	= omap4_l2c310_write_sec,
313 	.map_io		= am33xx_map_io,
314 	.init_early	= am43xx_init_early,
315 	.init_late	= am43xx_init_late,
316 	.init_irq	= omap_gic_of_init,
317 	.init_machine	= omap_generic_init,
318 	.init_time	= omap_init_time_of,
319 	.dt_compat	= am43_boards_compat,
320 	.restart	= omap44xx_restart,
321 MACHINE_END
322 #endif
323 
324 #ifdef CONFIG_SOC_DRA7XX
325 static const char *const dra74x_boards_compat[] __initconst = {
326 	"ti,dra762",
327 	"ti,am5728",
328 	"ti,am5726",
329 	"ti,dra742",
330 	"ti,dra7",
331 	NULL,
332 };
333 
334 DT_MACHINE_START(DRA74X_DT, "Generic DRA74X (Flattened Device Tree)")
335 #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
336 	.dma_zone_size	= SZ_2G,
337 #endif
338 	.reserve	= omap_reserve,
339 	.smp		= smp_ops(omap4_smp_ops),
340 	.map_io		= dra7xx_map_io,
341 	.init_early	= dra7xx_init_early,
342 	.init_late	= dra7xx_init_late,
343 	.init_irq	= omap_gic_of_init,
344 	.init_machine	= omap_generic_init,
345 	.init_time	= omap5_realtime_timer_init,
346 	.dt_compat	= dra74x_boards_compat,
347 	.restart	= omap44xx_restart,
348 MACHINE_END
349 
350 static const char *const dra72x_boards_compat[] __initconst = {
351 	"ti,am5718",
352 	"ti,am5716",
353 	"ti,dra722",
354 	"ti,dra718",
355 	NULL,
356 };
357 
358 DT_MACHINE_START(DRA72X_DT, "Generic DRA72X (Flattened Device Tree)")
359 #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
360 	.dma_zone_size	= SZ_2G,
361 #endif
362 	.reserve	= omap_reserve,
363 	.map_io		= dra7xx_map_io,
364 	.init_early	= dra7xx_init_early,
365 	.init_late	= dra7xx_init_late,
366 	.init_irq	= omap_gic_of_init,
367 	.init_machine	= omap_generic_init,
368 	.init_time	= omap5_realtime_timer_init,
369 	.dt_compat	= dra72x_boards_compat,
370 	.restart	= omap44xx_restart,
371 MACHINE_END
372 #endif
373