1 // SPDX-License-Identifier: GPL-2.0
3 * (C) Copyright 2012-2016 Stephen Warren
10 #include <efi_loader.h>
11 #include <fdt_support.h>
12 #include <fdt_simplefb.h>
17 #include <asm/arch/mbox.h>
18 #include <asm/arch/msg.h>
19 #include <asm/arch/sdhci.h>
20 #include <asm/global_data.h>
21 #include <dm/platform_data/serial_bcm283x_mu.h>
23 #include <asm/armv8/mmu.h>
26 #include <dm/pinctrl.h>
28 DECLARE_GLOBAL_DATA_PTR;
30 /* From lowlevel_init.S */
31 extern unsigned long fw_dtb_pointer;
33 /* TODO(sjg@chromium.org): Move these to the msg.c file */
34 struct msg_get_arm_mem {
35 struct bcm2835_mbox_hdr hdr;
36 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
40 struct msg_get_board_rev {
41 struct bcm2835_mbox_hdr hdr;
42 struct bcm2835_mbox_tag_get_board_rev get_board_rev;
46 struct msg_get_board_serial {
47 struct bcm2835_mbox_hdr hdr;
48 struct bcm2835_mbox_tag_get_board_serial get_board_serial;
52 struct msg_get_mac_address {
53 struct bcm2835_mbox_hdr hdr;
54 struct bcm2835_mbox_tag_get_mac_address get_mac_address;
58 struct msg_get_clock_rate {
59 struct bcm2835_mbox_hdr hdr;
60 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
65 #define DTB_DIR "broadcom/"
71 * https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
79 static const struct rpi_model rpi_model_unknown = {
81 DTB_DIR "bcm283x-rpi-other.dtb",
85 static const struct rpi_model rpi_models_new_scheme[] = {
88 DTB_DIR "bcm2835-rpi-a.dtb",
93 DTB_DIR "bcm2835-rpi-b.dtb",
98 DTB_DIR "bcm2835-rpi-a-plus.dtb",
103 DTB_DIR "bcm2835-rpi-b-plus.dtb",
108 DTB_DIR "bcm2836-rpi-2-b.dtb",
113 DTB_DIR "bcm2835-rpi-cm.dtb",
118 DTB_DIR "bcm2837-rpi-3-b.dtb",
123 DTB_DIR "bcm2835-rpi-zero.dtb",
128 DTB_DIR "bcm2837-rpi-cm3.dtb",
133 DTB_DIR "bcm2835-rpi-zero-w.dtb",
138 DTB_DIR "bcm2837-rpi-3-b-plus.dtb",
143 DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
148 DTB_DIR "bcm2837-rpi-cm3.dtb",
153 DTB_DIR "bcm2711-rpi-4-b.dtb",
158 static const struct rpi_model rpi_models_old_scheme[] = {
161 DTB_DIR "bcm2835-rpi-b.dtb",
166 DTB_DIR "bcm2835-rpi-b.dtb",
171 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
176 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
181 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
186 DTB_DIR "bcm2835-rpi-a.dtb",
191 DTB_DIR "bcm2835-rpi-a.dtb",
196 DTB_DIR "bcm2835-rpi-a.dtb",
201 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
206 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
211 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
216 DTB_DIR "bcm2835-rpi-b-plus.dtb",
221 DTB_DIR "bcm2835-rpi-cm.dtb",
226 DTB_DIR "bcm2835-rpi-a-plus.dtb",
231 DTB_DIR "bcm2835-rpi-b-plus.dtb",
236 DTB_DIR "bcm2835-rpi-cm.dtb",
241 DTB_DIR "bcm2835-rpi-a-plus.dtb",
246 static uint32_t revision;
247 static uint32_t rev_scheme;
248 static uint32_t rev_type;
249 static const struct rpi_model *model;
252 static struct mm_region bcm2837_mem_map[] = {
254 .virt = 0x00000000UL,
255 .phys = 0x00000000UL,
256 .size = 0x3f000000UL,
257 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
258 PTE_BLOCK_INNER_SHARE
260 .virt = 0x3f000000UL,
261 .phys = 0x3f000000UL,
262 .size = 0x01000000UL,
263 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
264 PTE_BLOCK_NON_SHARE |
265 PTE_BLOCK_PXN | PTE_BLOCK_UXN
267 /* List terminator */
272 struct mm_region *mem_map = bcm2837_mem_map;
277 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
280 BCM2835_MBOX_INIT_HDR(msg);
281 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
283 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
285 printf("bcm2835: Could not query ARM memory size\n");
289 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
294 static void set_fdtfile(void)
298 if (env_get("fdtfile"))
301 fdtfile = model->fdtfile;
302 env_set("fdtfile", fdtfile);
306 * If the firmware provided a valid FDT at boot time, let's expose it in
307 * ${fdt_addr} so it may be passed unmodified to the kernel.
309 static void set_fdt_addr(void)
311 if (env_get("fdt_addr"))
314 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
317 env_set_hex("fdt_addr", fw_dtb_pointer);
321 * Prevent relocation from stomping on a firmware provided FDT blob.
323 unsigned long board_get_usable_ram_top(unsigned long total_size)
325 if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
327 return fw_dtb_pointer & ~0xffff;
330 static void set_usbethaddr(void)
332 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
335 if (!model->has_onboard_eth)
338 if (env_get("usbethaddr"))
341 BCM2835_MBOX_INIT_HDR(msg);
342 BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
344 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
346 printf("bcm2835: Could not query MAC address\n");
347 /* Ignore error; not critical */
351 eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
353 if (!env_get("ethaddr"))
354 env_set("ethaddr", env_get("usbethaddr"));
359 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
360 static void set_board_info(void)
364 snprintf(s, sizeof(s), "0x%X", revision);
365 env_set("board_revision", s);
366 snprintf(s, sizeof(s), "%d", rev_scheme);
367 env_set("board_rev_scheme", s);
368 /* Can't rename this to board_rev_type since it's an ABI for scripts */
369 snprintf(s, sizeof(s), "0x%X", rev_type);
370 env_set("board_rev", s);
371 env_set("board_name", model->name);
373 #endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
375 static void set_serial_number(void)
377 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
379 char serial_string[17] = { 0 };
381 if (env_get("serial#"))
384 BCM2835_MBOX_INIT_HDR(msg);
385 BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
387 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
389 printf("bcm2835: Could not query board serial\n");
390 /* Ignore error; not critical */
394 snprintf(serial_string, sizeof(serial_string), "%016llx",
395 msg->get_board_serial.body.resp.serial);
396 env_set("serial#", serial_string);
399 int misc_init_r(void)
404 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
412 static void get_board_rev(void)
414 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
416 const struct rpi_model *models;
417 uint32_t models_count;
419 BCM2835_MBOX_INIT_HDR(msg);
420 BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
422 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
424 printf("bcm2835: Could not query board revision\n");
425 /* Ignore error; not critical */
430 * For details of old-vs-new scheme, see:
431 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
432 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
435 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
436 * lower byte to use as the board rev:
437 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
438 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
440 revision = msg->get_board_rev.body.resp.rev;
441 if (revision & 0x800000) {
443 rev_type = (revision >> 4) & 0xff;
444 models = rpi_models_new_scheme;
445 models_count = ARRAY_SIZE(rpi_models_new_scheme);
448 rev_type = revision & 0xff;
449 models = rpi_models_old_scheme;
450 models_count = ARRAY_SIZE(rpi_models_old_scheme);
452 if (rev_type >= models_count) {
453 printf("RPI: Board rev 0x%x outside known range\n", rev_type);
454 model = &rpi_model_unknown;
455 } else if (!models[rev_type].name) {
456 printf("RPI: Board rev 0x%x unknown\n", rev_type);
457 model = &rpi_model_unknown;
459 model = &models[rev_type];
462 printf("RPI %s (0x%x)\n", model->name, revision);
467 #ifdef CONFIG_HW_WATCHDOG
473 gd->bd->bi_boot_params = 0x100;
475 return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
479 * If the firmware passed a device tree use it for U-Boot.
481 void *board_fdt_blob_setup(void)
483 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
485 return (void *)fw_dtb_pointer;
488 int ft_board_setup(void *blob, bd_t *bd)
491 * For now, we simply always add the simplefb DT node. Later, we
492 * should be more intelligent, and e.g. only do this if no enabled DT
493 * node exists for the "real" graphics driver.
495 lcd_dt_simplefb_add_node(blob);
497 #ifdef CONFIG_EFI_LOADER
498 /* Reserve the spin table */
499 efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);