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.com/documentation/computers/raspberry-pi.html#raspberry-pi-revision-codes
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 DTB_DIR "bcm2837-rpi-zero-2.dtb",
167 DTB_DIR "bcm2711-rpi-400.dtb",
172 DTB_DIR "bcm2711-rpi-cm4.dtb",
177 static const struct rpi_model rpi_models_old_scheme[] = {
180 DTB_DIR "bcm2835-rpi-b.dtb",
185 DTB_DIR "bcm2835-rpi-b.dtb",
190 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
195 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
200 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
205 DTB_DIR "bcm2835-rpi-a.dtb",
210 DTB_DIR "bcm2835-rpi-a.dtb",
215 DTB_DIR "bcm2835-rpi-a.dtb",
220 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
225 DTB_DIR "bcm2835-rpi-b-rev2.dtb",
230 DTB_DIR "bcm2835-rpi-b-rev2.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 DTB_DIR "bcm2835-rpi-b-plus.dtb",
255 DTB_DIR "bcm2835-rpi-cm.dtb",
260 DTB_DIR "bcm2835-rpi-a-plus.dtb",
265 static uint32_t revision;
266 static uint32_t rev_scheme;
267 static uint32_t rev_type;
268 static const struct rpi_model *model;
272 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
275 BCM2835_MBOX_INIT_HDR(msg);
276 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
278 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
280 printf("bcm2835: Could not query ARM memory size\n");
284 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
287 * In some configurations the memory size returned by VideoCore
288 * is not aligned to the section size, what is mandatory for
289 * the u-boot's memory setup.
291 gd->ram_size &= ~MMU_SECTION_SIZE;
296 #ifdef CONFIG_OF_BOARD
297 int dram_init_banksize(void)
301 ret = fdtdec_setup_memory_banksize();
305 return fdtdec_setup_mem_size_base();
309 static void set_fdtfile(void)
313 if (env_get("fdtfile"))
316 fdtfile = model->fdtfile;
317 env_set("fdtfile", fdtfile);
321 * If the firmware provided a valid FDT at boot time, let's expose it in
322 * ${fdt_addr} so it may be passed unmodified to the kernel.
324 static void set_fdt_addr(void)
326 if (env_get("fdt_addr"))
329 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
332 env_set_hex("fdt_addr", fw_dtb_pointer);
336 * Prevent relocation from stomping on a firmware provided FDT blob.
338 unsigned long board_get_usable_ram_top(unsigned long total_size)
340 if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
342 return fw_dtb_pointer & ~0xffff;
345 static void set_usbethaddr(void)
347 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
350 if (!model->has_onboard_eth)
353 if (env_get("usbethaddr"))
356 BCM2835_MBOX_INIT_HDR(msg);
357 BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
359 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
361 printf("bcm2835: Could not query MAC address\n");
362 /* Ignore error; not critical */
366 eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
368 if (!env_get("ethaddr"))
369 env_set("ethaddr", env_get("usbethaddr"));
374 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
375 static void set_board_info(void)
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 /* Can't rename this to board_rev_type since it's an ABI for scripts */
384 snprintf(s, sizeof(s), "0x%X", rev_type);
385 env_set("board_rev", s);
386 env_set("board_name", model->name);
388 #endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
390 static void set_serial_number(void)
392 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
394 char serial_string[17] = { 0 };
396 if (env_get("serial#"))
399 BCM2835_MBOX_INIT_HDR(msg);
400 BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
402 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
404 printf("bcm2835: Could not query board serial\n");
405 /* Ignore error; not critical */
409 snprintf(serial_string, sizeof(serial_string), "%016llx",
410 msg->get_board_serial.body.resp.serial);
411 env_set("serial#", serial_string);
414 int misc_init_r(void)
419 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
427 static void get_board_revision(void)
429 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
431 const struct rpi_model *models;
432 uint32_t models_count;
434 BCM2835_MBOX_INIT_HDR(msg);
435 BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
437 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
439 printf("bcm2835: Could not query board revision\n");
440 /* Ignore error; not critical */
445 * For details of old-vs-new scheme, see:
446 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
447 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
450 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
451 * lower byte to use as the board rev:
452 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
453 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
455 revision = msg->get_board_rev.body.resp.rev;
456 if (revision & 0x800000) {
458 rev_type = (revision >> 4) & 0xff;
459 models = rpi_models_new_scheme;
460 models_count = ARRAY_SIZE(rpi_models_new_scheme);
463 rev_type = revision & 0xff;
464 models = rpi_models_old_scheme;
465 models_count = ARRAY_SIZE(rpi_models_old_scheme);
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;
474 model = &models[rev_type];
477 printf("RPI %s (0x%x)\n", model->name, revision);
482 #ifdef CONFIG_HW_WATCHDOG
486 get_board_revision();
488 gd->bd->bi_boot_params = 0x100;
490 return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
494 * If the firmware passed a device tree use it for U-Boot.
496 void *board_fdt_blob_setup(int *err)
499 if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC) {
504 return (void *)fw_dtb_pointer;
507 int ft_board_setup(void *blob, struct bd_info *bd)
511 node = fdt_node_offset_by_compatible(blob, -1, "simple-framebuffer");
513 fdt_simplefb_add_node(blob);
515 #ifdef CONFIG_EFI_LOADER
516 /* Reserve the spin table */
517 efi_add_memory_map(0, CONFIG_RPI_EFI_NR_SPIN_PAGES << EFI_PAGE_SHIFT,
518 EFI_RESERVED_MEMORY_TYPE);