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5
6#include <common.h>
7#include <config.h>
8#include <dm.h>
9#include <env.h>
10#include <efi_loader.h>
11#include <fdt_support.h>
12#include <fdt_simplefb.h>
13#include <init.h>
14#include <lcd.h>
15#include <memalign.h>
16#include <mmc.h>
17#include <asm/gpio.h>
18#include <asm/arch/mbox.h>
19#include <asm/arch/msg.h>
20#include <asm/arch/sdhci.h>
21#include <asm/global_data.h>
22#include <dm/platform_data/serial_bcm283x_mu.h>
23#ifdef CONFIG_ARM64
24#include <asm/armv8/mmu.h>
25#endif
26#include <watchdog.h>
27#include <dm/pinctrl.h>
28
29DECLARE_GLOBAL_DATA_PTR;
30
31
32
33
34
35unsigned long __section(".data") fw_dtb_pointer;
36
37
38struct msg_get_arm_mem {
39 struct bcm2835_mbox_hdr hdr;
40 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
41 u32 end_tag;
42};
43
44struct msg_get_board_rev {
45 struct bcm2835_mbox_hdr hdr;
46 struct bcm2835_mbox_tag_get_board_rev get_board_rev;
47 u32 end_tag;
48};
49
50struct msg_get_board_serial {
51 struct bcm2835_mbox_hdr hdr;
52 struct bcm2835_mbox_tag_get_board_serial get_board_serial;
53 u32 end_tag;
54};
55
56struct msg_get_mac_address {
57 struct bcm2835_mbox_hdr hdr;
58 struct bcm2835_mbox_tag_get_mac_address get_mac_address;
59 u32 end_tag;
60};
61
62struct msg_get_clock_rate {
63 struct bcm2835_mbox_hdr hdr;
64 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
65 u32 end_tag;
66};
67
68#ifdef CONFIG_ARM64
69#define DTB_DIR "broadcom/"
70#else
71#define DTB_DIR ""
72#endif
73
74
75
76
77struct rpi_model {
78 const char *name;
79 const char *fdtfile;
80 bool has_onboard_eth;
81};
82
83static const struct rpi_model rpi_model_unknown = {
84 "Unknown model",
85 DTB_DIR "bcm283x-rpi-other.dtb",
86 false,
87};
88
89static const struct rpi_model rpi_models_new_scheme[] = {
90 [0x0] = {
91 "Model A",
92 DTB_DIR "bcm2835-rpi-a.dtb",
93 false,
94 },
95 [0x1] = {
96 "Model B",
97 DTB_DIR "bcm2835-rpi-b.dtb",
98 true,
99 },
100 [0x2] = {
101 "Model A+",
102 DTB_DIR "bcm2835-rpi-a-plus.dtb",
103 false,
104 },
105 [0x3] = {
106 "Model B+",
107 DTB_DIR "bcm2835-rpi-b-plus.dtb",
108 true,
109 },
110 [0x4] = {
111 "2 Model B",
112 DTB_DIR "bcm2836-rpi-2-b.dtb",
113 true,
114 },
115 [0x6] = {
116 "Compute Module",
117 DTB_DIR "bcm2835-rpi-cm.dtb",
118 false,
119 },
120 [0x8] = {
121 "3 Model B",
122 DTB_DIR "bcm2837-rpi-3-b.dtb",
123 true,
124 },
125 [0x9] = {
126 "Zero",
127 DTB_DIR "bcm2835-rpi-zero.dtb",
128 false,
129 },
130 [0xA] = {
131 "Compute Module 3",
132 DTB_DIR "bcm2837-rpi-cm3.dtb",
133 false,
134 },
135 [0xC] = {
136 "Zero W",
137 DTB_DIR "bcm2835-rpi-zero-w.dtb",
138 false,
139 },
140 [0xD] = {
141 "3 Model B+",
142 DTB_DIR "bcm2837-rpi-3-b-plus.dtb",
143 true,
144 },
145 [0xE] = {
146 "3 Model A+",
147 DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
148 false,
149 },
150 [0x10] = {
151 "Compute Module 3+",
152 DTB_DIR "bcm2837-rpi-cm3.dtb",
153 false,
154 },
155 [0x11] = {
156 "4 Model B",
157 DTB_DIR "bcm2711-rpi-4-b.dtb",
158 true,
159 },
160 [0x12] = {
161 "Zero 2 W",
162 DTB_DIR "bcm2837-rpi-zero-2.dtb",
163 false,
164 },
165 [0x13] = {
166 "400",
167 DTB_DIR "bcm2711-rpi-400.dtb",
168 true,
169 },
170 [0x14] = {
171 "Compute Module 4",
172 DTB_DIR "bcm2711-rpi-cm4.dtb",
173 true,
174 },
175};
176
177static const struct rpi_model rpi_models_old_scheme[] = {
178 [0x2] = {
179 "Model B",
180 DTB_DIR "bcm2835-rpi-b.dtb",
181 true,
182 },
183 [0x3] = {
184 "Model B",
185 DTB_DIR "bcm2835-rpi-b.dtb",
186 true,
187 },
188 [0x4] = {
189 "Model B rev2",
190 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
191 true,
192 },
193 [0x5] = {
194 "Model B rev2",
195 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
196 true,
197 },
198 [0x6] = {
199 "Model B rev2",
200 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
201 true,
202 },
203 [0x7] = {
204 "Model A",
205 DTB_DIR "bcm2835-rpi-a.dtb",
206 false,
207 },
208 [0x8] = {
209 "Model A",
210 DTB_DIR "bcm2835-rpi-a.dtb",
211 false,
212 },
213 [0x9] = {
214 "Model A",
215 DTB_DIR "bcm2835-rpi-a.dtb",
216 false,
217 },
218 [0xd] = {
219 "Model B rev2",
220 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
221 true,
222 },
223 [0xe] = {
224 "Model B rev2",
225 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
226 true,
227 },
228 [0xf] = {
229 "Model B rev2",
230 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
231 true,
232 },
233 [0x10] = {
234 "Model B+",
235 DTB_DIR "bcm2835-rpi-b-plus.dtb",
236 true,
237 },
238 [0x11] = {
239 "Compute Module",
240 DTB_DIR "bcm2835-rpi-cm.dtb",
241 false,
242 },
243 [0x12] = {
244 "Model A+",
245 DTB_DIR "bcm2835-rpi-a-plus.dtb",
246 false,
247 },
248 [0x13] = {
249 "Model B+",
250 DTB_DIR "bcm2835-rpi-b-plus.dtb",
251 true,
252 },
253 [0x14] = {
254 "Compute Module",
255 DTB_DIR "bcm2835-rpi-cm.dtb",
256 false,
257 },
258 [0x15] = {
259 "Model A+",
260 DTB_DIR "bcm2835-rpi-a-plus.dtb",
261 false,
262 },
263};
264
265static uint32_t revision;
266static uint32_t rev_scheme;
267static uint32_t rev_type;
268static const struct rpi_model *model;
269
270int dram_init(void)
271{
272 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
273 int ret;
274
275 BCM2835_MBOX_INIT_HDR(msg);
276 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
277
278 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
279 if (ret) {
280 printf("bcm2835: Could not query ARM memory size\n");
281 return -1;
282 }
283
284 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
285
286
287
288
289
290
291 gd->ram_size &= ~MMU_SECTION_SIZE;
292
293 return 0;
294}
295
296#ifdef CONFIG_OF_BOARD
297int dram_init_banksize(void)
298{
299 int ret;
300
301 ret = fdtdec_setup_memory_banksize();
302 if (ret)
303 return ret;
304
305 return fdtdec_setup_mem_size_base();
306}
307#endif
308
309static void set_fdtfile(void)
310{
311 const char *fdtfile;
312
313 if (env_get("fdtfile"))
314 return;
315
316 fdtfile = model->fdtfile;
317 env_set("fdtfile", fdtfile);
318}
319
320
321
322
323
324static void set_fdt_addr(void)
325{
326 if (env_get("fdt_addr"))
327 return;
328
329 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
330 return;
331
332 env_set_hex("fdt_addr", fw_dtb_pointer);
333}
334
335
336
337
338unsigned long board_get_usable_ram_top(unsigned long total_size)
339{
340 if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
341 return gd->ram_top;
342 return fw_dtb_pointer & ~0xffff;
343}
344
345static void set_usbethaddr(void)
346{
347 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
348 int ret;
349
350 if (!model->has_onboard_eth)
351 return;
352
353 if (env_get("usbethaddr"))
354 return;
355
356 BCM2835_MBOX_INIT_HDR(msg);
357 BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
358
359 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
360 if (ret) {
361 printf("bcm2835: Could not query MAC address\n");
362
363 return;
364 }
365
366 eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
367
368 if (!env_get("ethaddr"))
369 env_set("ethaddr", env_get("usbethaddr"));
370
371 return;
372}
373
374#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
375static void set_board_info(void)
376{
377 char s[11];
378
379 snprintf(s, sizeof(s), "0x%X", revision);
380 env_set("board_revision", s);
381 snprintf(s, sizeof(s), "%d", rev_scheme);
382 env_set("board_rev_scheme", s);
383
384 snprintf(s, sizeof(s), "0x%X", rev_type);
385 env_set("board_rev", s);
386 env_set("board_name", model->name);
387}
388#endif
389
390static void set_serial_number(void)
391{
392 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
393 int ret;
394 char serial_string[17] = { 0 };
395
396 if (env_get("serial#"))
397 return;
398
399 BCM2835_MBOX_INIT_HDR(msg);
400 BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
401
402 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
403 if (ret) {
404 printf("bcm2835: Could not query board serial\n");
405
406 return;
407 }
408
409 snprintf(serial_string, sizeof(serial_string), "%016llx",
410 msg->get_board_serial.body.resp.serial);
411 env_set("serial#", serial_string);
412}
413
414int misc_init_r(void)
415{
416 set_fdt_addr();
417 set_fdtfile();
418 set_usbethaddr();
419#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
420 set_board_info();
421#endif
422 set_serial_number();
423
424 return 0;
425}
426
427static void get_board_revision(void)
428{
429 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
430 int ret;
431 const struct rpi_model *models;
432 uint32_t models_count;
433
434 BCM2835_MBOX_INIT_HDR(msg);
435 BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
436
437 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
438 if (ret) {
439 printf("bcm2835: Could not query board revision\n");
440
441 return;
442 }
443
444
445
446
447
448
449
450
451
452
453
454
455 revision = msg->get_board_rev.body.resp.rev;
456 if (revision & 0x800000) {
457 rev_scheme = 1;
458 rev_type = (revision >> 4) & 0xff;
459 models = rpi_models_new_scheme;
460 models_count = ARRAY_SIZE(rpi_models_new_scheme);
461 } else {
462 rev_scheme = 0;
463 rev_type = revision & 0xff;
464 models = rpi_models_old_scheme;
465 models_count = ARRAY_SIZE(rpi_models_old_scheme);
466 }
467 if (rev_type >= models_count) {
468 printf("RPI: Board rev 0x%x outside known range\n", rev_type);
469 model = &rpi_model_unknown;
470 } else if (!models[rev_type].name) {
471 printf("RPI: Board rev 0x%x unknown\n", rev_type);
472 model = &rpi_model_unknown;
473 } else {
474 model = &models[rev_type];
475 }
476
477 printf("RPI %s (0x%x)\n", model->name, revision);
478}
479
480int board_init(void)
481{
482#ifdef CONFIG_HW_WATCHDOG
483 hw_watchdog_init();
484#endif
485
486 get_board_revision();
487
488 gd->bd->bi_boot_params = 0x100;
489
490 return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
491}
492
493
494
495
496void *board_fdt_blob_setup(int *err)
497{
498 *err = 0;
499 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC) {
500 *err = -ENXIO;
501 return NULL;
502 }
503
504 return (void *)fw_dtb_pointer;
505}
506
507int ft_board_setup(void *blob, struct bd_info *bd)
508{
509 int node;
510
511 node = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
512 if (node < 0)
513 fdt_simplefb_add_node(blob);
514
515#ifdef CONFIG_EFI_LOADER
516
517 efi_add_memory_map(0, CONFIG_RPI_EFI_NR_SPIN_PAGES << EFI_PAGE_SHIFT,
518 EFI_RESERVED_MEMORY_TYPE);
519#endif
520
521 return 0;
522}
523