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>
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>
24 #include <asm/armv8/mmu.h>
27 #include <dm/pinctrl.h>
29 DECLARE_GLOBAL_DATA_PTR;
31 /* Assigned in lowlevel_init.S
32 * Push the variable into the .data section so that it
33 * does not get cleared later.
35 unsigned long __section(".data") fw_dtb_pointer;
37 /* TODO(sjg@chromium.org): Move these to the msg.c file */
38 struct msg_get_arm_mem {
39 struct bcm2835_mbox_hdr hdr;
40 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
44 struct msg_get_board_rev {
45 struct bcm2835_mbox_hdr hdr;
46 struct bcm2835_mbox_tag_get_board_rev get_board_rev;
50 struct msg_get_board_serial {
51 struct bcm2835_mbox_hdr hdr;
52 struct bcm2835_mbox_tag_get_board_serial get_board_serial;
56 struct msg_get_mac_address {
57 struct bcm2835_mbox_hdr hdr;
58 struct bcm2835_mbox_tag_get_mac_address get_mac_address;
62 struct msg_get_clock_rate {
63 struct bcm2835_mbox_hdr hdr;
64 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
69 #define DTB_DIR "broadcom/"
75 * https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md
83 static const struct rpi_model rpi_model_unknown = {
85 DTB_DIR "bcm283x-rpi-other.dtb",
89 static const struct rpi_model rpi_models_new_scheme[] = {
92 DTB_DIR "bcm2835-rpi-a.dtb",
97 DTB_DIR "bcm2835-rpi-b.dtb",
102 DTB_DIR "bcm2835-rpi-a-plus.dtb",
107 DTB_DIR "bcm2835-rpi-b-plus.dtb",
112 DTB_DIR "bcm2836-rpi-2-b.dtb",
117 DTB_DIR "bcm2835-rpi-cm.dtb",
122 DTB_DIR "bcm2837-rpi-3-b.dtb",
127 DTB_DIR "bcm2835-rpi-zero.dtb",
132 DTB_DIR "bcm2837-rpi-cm3.dtb",
137 DTB_DIR "bcm2835-rpi-zero-w.dtb",
142 DTB_DIR "bcm2837-rpi-3-b-plus.dtb",
147 DTB_DIR "bcm2837-rpi-3-a-plus.dtb",
152 DTB_DIR "bcm2837-rpi-cm3.dtb",
157 DTB_DIR "bcm2711-rpi-4-b.dtb",
162 static const struct rpi_model rpi_models_old_scheme[] = {
165 DTB_DIR "bcm2835-rpi-b.dtb",
170 DTB_DIR "bcm2835-rpi-b.dtb",
175 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
180 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
185 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
190 DTB_DIR "bcm2835-rpi-a.dtb",
195 DTB_DIR "bcm2835-rpi-a.dtb",
200 DTB_DIR "bcm2835-rpi-a.dtb",
205 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
210 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
215 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
220 DTB_DIR "bcm2835-rpi-b-plus.dtb",
225 DTB_DIR "bcm2835-rpi-cm.dtb",
230 DTB_DIR "bcm2835-rpi-a-plus.dtb",
235 DTB_DIR "bcm2835-rpi-b-plus.dtb",
240 DTB_DIR "bcm2835-rpi-cm.dtb",
245 DTB_DIR "bcm2835-rpi-a-plus.dtb",
250 static uint32_t revision;
251 static uint32_t rev_scheme;
252 static uint32_t rev_type;
253 static const struct rpi_model *model;
257 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
260 BCM2835_MBOX_INIT_HDR(msg);
261 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
263 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
265 printf("bcm2835: Could not query ARM memory size\n");
269 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
274 #ifdef CONFIG_OF_BOARD
275 int dram_init_banksize(void)
279 ret = fdtdec_setup_memory_banksize();
283 return fdtdec_setup_mem_size_base();
287 static void set_fdtfile(void)
291 if (env_get("fdtfile"))
294 fdtfile = model->fdtfile;
295 env_set("fdtfile", fdtfile);
299 * If the firmware provided a valid FDT at boot time, let's expose it in
300 * ${fdt_addr} so it may be passed unmodified to the kernel.
302 static void set_fdt_addr(void)
304 if (env_get("fdt_addr"))
307 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
310 env_set_hex("fdt_addr", fw_dtb_pointer);
314 * Prevent relocation from stomping on a firmware provided FDT blob.
316 unsigned long board_get_usable_ram_top(unsigned long total_size)
318 if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
320 return fw_dtb_pointer & ~0xffff;
323 static void set_usbethaddr(void)
325 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
328 if (!model->has_onboard_eth)
331 if (env_get("usbethaddr"))
334 BCM2835_MBOX_INIT_HDR(msg);
335 BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
337 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
339 printf("bcm2835: Could not query MAC address\n");
340 /* Ignore error; not critical */
344 eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
346 if (!env_get("ethaddr"))
347 env_set("ethaddr", env_get("usbethaddr"));
352 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
353 static void set_board_info(void)
357 snprintf(s, sizeof(s), "0x%X", revision);
358 env_set("board_revision", s);
359 snprintf(s, sizeof(s), "%d", rev_scheme);
360 env_set("board_rev_scheme", s);
361 /* Can't rename this to board_rev_type since it's an ABI for scripts */
362 snprintf(s, sizeof(s), "0x%X", rev_type);
363 env_set("board_rev", s);
364 env_set("board_name", model->name);
366 #endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
368 static void set_serial_number(void)
370 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
372 char serial_string[17] = { 0 };
374 if (env_get("serial#"))
377 BCM2835_MBOX_INIT_HDR(msg);
378 BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
380 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
382 printf("bcm2835: Could not query board serial\n");
383 /* Ignore error; not critical */
387 snprintf(serial_string, sizeof(serial_string), "%016llx",
388 msg->get_board_serial.body.resp.serial);
389 env_set("serial#", serial_string);
392 int misc_init_r(void)
397 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
405 static void get_board_rev(void)
407 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
409 const struct rpi_model *models;
410 uint32_t models_count;
412 BCM2835_MBOX_INIT_HDR(msg);
413 BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
415 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
417 printf("bcm2835: Could not query board revision\n");
418 /* Ignore error; not critical */
423 * For details of old-vs-new scheme, see:
424 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
425 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
428 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
429 * lower byte to use as the board rev:
430 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
431 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
433 revision = msg->get_board_rev.body.resp.rev;
434 if (revision & 0x800000) {
436 rev_type = (revision >> 4) & 0xff;
437 models = rpi_models_new_scheme;
438 models_count = ARRAY_SIZE(rpi_models_new_scheme);
441 rev_type = revision & 0xff;
442 models = rpi_models_old_scheme;
443 models_count = ARRAY_SIZE(rpi_models_old_scheme);
445 if (rev_type >= models_count) {
446 printf("RPI: Board rev 0x%x outside known range\n", rev_type);
447 model = &rpi_model_unknown;
448 } else if (!models[rev_type].name) {
449 printf("RPI: Board rev 0x%x unknown\n", rev_type);
450 model = &rpi_model_unknown;
452 model = &models[rev_type];
455 printf("RPI %s (0x%x)\n", model->name, revision);
460 #ifdef CONFIG_HW_WATCHDOG
466 gd->bd->bi_boot_params = 0x100;
468 return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
472 * If the firmware passed a device tree use it for U-Boot.
474 void *board_fdt_blob_setup(void)
476 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
478 return (void *)fw_dtb_pointer;
481 int ft_board_setup(void *blob, bd_t *bd)
484 * For now, we simply always add the simplefb DT node. Later, we
485 * should be more intelligent, and e.g. only do this if no enabled DT
486 * node exists for the "real" graphics driver.
488 lcd_dt_simplefb_add_node(blob);
490 #ifdef CONFIG_EFI_LOADER
491 /* Reserve the spin table */
492 efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);