2 * (C) Copyright 2012-2016 Stephen Warren
4 * SPDX-License-Identifier: GPL-2.0
11 #include <fdt_support.h>
12 #include <fdt_simplefb.h>
17 #include <asm/arch/mbox.h>
18 #include <asm/arch/sdhci.h>
19 #include <asm/global_data.h>
20 #include <dm/platform_data/serial_pl01x.h>
21 #include <dm/platform_data/serial_bcm283x_mu.h>
23 #include <asm/armv8/mmu.h>
26 DECLARE_GLOBAL_DATA_PTR;
28 static const struct bcm2835_gpio_platdata gpio_platdata = {
29 .base = BCM2835_GPIO_BASE,
32 U_BOOT_DEVICE(bcm2835_gpios) = {
33 .name = "gpio_bcm2835",
34 .platdata = &gpio_platdata,
37 #ifdef CONFIG_PL01X_SERIAL
38 static const struct pl01x_serial_platdata serial_platdata = {
39 #ifndef CONFIG_BCM2835
48 U_BOOT_DEVICE(bcm2835_serials) = {
49 .name = "serial_pl01x",
50 .platdata = &serial_platdata,
53 static struct bcm283x_mu_serial_platdata serial_platdata = {
59 U_BOOT_DEVICE(bcm2837_serials) = {
60 .name = "serial_bcm283x_mu",
61 .platdata = &serial_platdata,
65 struct msg_get_arm_mem {
66 struct bcm2835_mbox_hdr hdr;
67 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
71 struct msg_get_board_rev {
72 struct bcm2835_mbox_hdr hdr;
73 struct bcm2835_mbox_tag_get_board_rev get_board_rev;
77 struct msg_get_board_serial {
78 struct bcm2835_mbox_hdr hdr;
79 struct bcm2835_mbox_tag_get_board_serial get_board_serial;
83 struct msg_get_mac_address {
84 struct bcm2835_mbox_hdr hdr;
85 struct bcm2835_mbox_tag_get_mac_address get_mac_address;
89 struct msg_set_power_state {
90 struct bcm2835_mbox_hdr hdr;
91 struct bcm2835_mbox_tag_set_power_state set_power_state;
95 struct msg_get_clock_rate {
96 struct bcm2835_mbox_hdr hdr;
97 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
102 * http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
103 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
104 * http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
106 * In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
107 * ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
108 * Foundation stated that the following source was accurate:
109 * https://github.com/AndrewFromMelbourne/raspberry_pi_revision
114 bool has_onboard_eth;
117 static const struct rpi_model rpi_model_unknown = {
119 "bcm283x-rpi-other.dtb",
123 static const struct rpi_model rpi_models_new_scheme[] = {
126 "bcm2836-rpi-2-b.dtb",
131 "bcm2837-rpi-3-b.dtb",
136 "bcm2835-rpi-zero.dtb",
141 static const struct rpi_model rpi_models_old_scheme[] = {
154 "bcm2835-rpi-b-rev2.dtb",
159 "bcm2835-rpi-b-rev2.dtb",
164 "bcm2835-rpi-b-rev2.dtb",
184 "bcm2835-rpi-b-rev2.dtb",
189 "bcm2835-rpi-b-rev2.dtb",
194 "bcm2835-rpi-b-rev2.dtb",
199 "bcm2835-rpi-b-plus.dtb",
204 "bcm2835-rpi-cm.dtb",
209 "bcm2835-rpi-a-plus.dtb",
214 "bcm2835-rpi-b-plus.dtb",
219 "bcm2835-rpi-cm.dtb",
224 "bcm2835-rpi-a-plus.dtb",
229 static uint32_t revision;
230 static uint32_t rev_scheme;
231 static uint32_t rev_type;
232 static const struct rpi_model *model;
235 static struct mm_region bcm2837_mem_map[] = {
237 .virt = 0x00000000UL,
238 .phys = 0x00000000UL,
239 .size = 0x3f000000UL,
240 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
241 PTE_BLOCK_INNER_SHARE
243 .virt = 0x3f000000UL,
244 .phys = 0x3f000000UL,
245 .size = 0x01000000UL,
246 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
247 PTE_BLOCK_NON_SHARE |
248 PTE_BLOCK_PXN | PTE_BLOCK_UXN
250 /* List terminator */
255 struct mm_region *mem_map = bcm2837_mem_map;
260 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
263 BCM2835_MBOX_INIT_HDR(msg);
264 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
266 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
268 printf("bcm2835: Could not query ARM memory size\n");
272 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
277 static void set_fdtfile(void)
281 if (getenv("fdtfile"))
284 fdtfile = model->fdtfile;
285 setenv("fdtfile", fdtfile);
288 static void set_usbethaddr(void)
290 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
293 if (!model->has_onboard_eth)
296 if (getenv("usbethaddr"))
299 BCM2835_MBOX_INIT_HDR(msg);
300 BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
302 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
304 printf("bcm2835: Could not query MAC address\n");
305 /* Ignore error; not critical */
309 eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
311 if (!getenv("ethaddr"))
312 setenv("ethaddr", getenv("usbethaddr"));
317 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
318 static void set_board_info(void)
322 snprintf(s, sizeof(s), "0x%X", revision);
323 setenv("board_revision", s);
324 snprintf(s, sizeof(s), "%d", rev_scheme);
325 setenv("board_rev_scheme", s);
326 /* Can't rename this to board_rev_type since it's an ABI for scripts */
327 snprintf(s, sizeof(s), "0x%X", rev_type);
328 setenv("board_rev", s);
329 setenv("board_name", model->name);
331 #endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
333 static void set_serial_number(void)
335 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
337 char serial_string[17] = { 0 };
339 if (getenv("serial#"))
342 BCM2835_MBOX_INIT_HDR(msg);
343 BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
345 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
347 printf("bcm2835: Could not query board serial\n");
348 /* Ignore error; not critical */
352 snprintf(serial_string, sizeof(serial_string), "%016" PRIx64,
353 msg->get_board_serial.body.resp.serial);
354 setenv("serial#", serial_string);
357 int misc_init_r(void)
361 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
369 static int power_on_module(u32 module)
371 ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
374 BCM2835_MBOX_INIT_HDR(msg_pwr);
375 BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
377 msg_pwr->set_power_state.body.req.device_id = module;
378 msg_pwr->set_power_state.body.req.state =
379 BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
380 BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;
382 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
385 printf("bcm2835: Could not set module %u power state\n",
393 static void get_board_rev(void)
395 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
397 const struct rpi_model *models;
398 uint32_t models_count;
400 BCM2835_MBOX_INIT_HDR(msg);
401 BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
403 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
405 printf("bcm2835: Could not query board revision\n");
406 /* Ignore error; not critical */
411 * For details of old-vs-new scheme, see:
412 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
413 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
416 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
417 * lower byte to use as the board rev:
418 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
419 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
421 revision = msg->get_board_rev.body.resp.rev;
422 if (revision & 0x800000) {
424 rev_type = (revision >> 4) & 0xff;
425 models = rpi_models_new_scheme;
426 models_count = ARRAY_SIZE(rpi_models_new_scheme);
429 rev_type = revision & 0xff;
430 models = rpi_models_old_scheme;
431 models_count = ARRAY_SIZE(rpi_models_old_scheme);
433 if (rev_type >= models_count) {
434 printf("RPI: Board rev 0x%x outside known range\n", rev_type);
435 model = &rpi_model_unknown;
436 } else if (!models[rev_type].name) {
437 printf("RPI: Board rev 0x%x unknown\n", rev_type);
438 model = &rpi_model_unknown;
440 model = &models[rev_type];
443 printf("RPI %s (0x%x)\n", model->name, revision);
450 gd->bd->bi_boot_params = 0x100;
452 return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
455 #ifndef CONFIG_PL01X_SERIAL
456 static bool rpi_is_serial_active(void)
458 int serial_gpio = 15;
462 * The RPi3 disables the mini uart by default. The easiest way to find
463 * out whether it is available is to check if the RX pin is muxed.
466 if (uclass_first_device(UCLASS_GPIO, &dev) || !dev)
469 if (bcm2835_gpio_get_func_id(dev, serial_gpio) != BCM2835_GPIO_ALT5)
476 int board_early_init_f(void)
478 #ifndef CONFIG_PL01X_SERIAL
479 /* Disable mini-UART I/O if it's not pinmuxed to our pins */
480 if (!rpi_is_serial_active())
481 serial_platdata.disabled = true;
487 int board_mmc_init(bd_t *bis)
489 ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1);
492 power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
494 BCM2835_MBOX_INIT_HDR(msg_clk);
495 BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
496 msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;
498 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
500 printf("bcm2835: Could not query eMMC clock rate\n");
504 return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
505 msg_clk->get_clock_rate.body.resp.rate_hz);
508 int ft_board_setup(void *blob, bd_t *bd)
511 * For now, we simply always add the simplefb DT node. Later, we
512 * should be more intelligent, and e.g. only do this if no enabled DT
513 * node exists for the "real" graphics driver.
515 lcd_dt_simplefb_add_node(blob);