[people/ms/u-boot.git] / board / raspberrypi / rpi / rpi.c

/*
 * (C) Copyright 2012-2016 Stephen Warren
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

#include <common.h>
#include <inttypes.h>
#include <config.h>
#include <dm.h>
#include <efi_loader.h>
#include <fdt_support.h>
#include <fdt_simplefb.h>
#include <lcd.h>
#include <memalign.h>
#include <mmc.h>
#include <asm/gpio.h>
#include <asm/arch/mbox.h>
#include <asm/arch/msg.h>
#include <asm/arch/sdhci.h>
#include <asm/global_data.h>
#include <dm/platform_data/serial_bcm283x_mu.h>
#ifdef CONFIG_ARM64
#include <asm/armv8/mmu.h>
#endif
#include <watchdog.h>

DECLARE_GLOBAL_DATA_PTR;

/* From lowlevel_init.S */
extern unsigned long fw_dtb_pointer;

/* TODO(sjg@chromium.org): Move these to the msg.c file */
struct msg_get_arm_mem {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
	u32 end_tag;
};

struct msg_get_board_rev {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_board_rev get_board_rev;
	u32 end_tag;
};

struct msg_get_board_serial {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_board_serial get_board_serial;
	u32 end_tag;
};

struct msg_get_mac_address {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_mac_address get_mac_address;
	u32 end_tag;
};

struct msg_get_clock_rate {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
	u32 end_tag;
};

#ifdef CONFIG_ARM64
#define DTB_DIR "broadcom/"
#else
#define DTB_DIR ""
#endif

/*
 * http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
 * http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
 *
 * In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
 * ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
 * Foundation stated that the following source was accurate:
 * https://github.com/AndrewFromMelbourne/raspberry_pi_revision
 */
struct rpi_model {
	const char *name;
	const char *fdtfile;
	bool has_onboard_eth;
};

static const struct rpi_model rpi_model_unknown = {
	"Unknown model",
	DTB_DIR "bcm283x-rpi-other.dtb",
	false,
};

static const struct rpi_model rpi_models_new_scheme[] = {
	[0x4] = {
		"2 Model B",
		DTB_DIR "bcm2836-rpi-2-b.dtb",
		true,
	},
	[0x8] = {
		"3 Model B",
		DTB_DIR "bcm2837-rpi-3-b.dtb",
		true,
	},
	[0x9] = {
		"Zero",
		DTB_DIR "bcm2835-rpi-zero.dtb",
		false,
	},
};

static const struct rpi_model rpi_models_old_scheme[] = {
	[0x2] = {
		"Model B",
		DTB_DIR "bcm2835-rpi-b.dtb",
		true,
	},
	[0x3] = {
		"Model B",
		DTB_DIR "bcm2835-rpi-b.dtb",
		true,
	},
	[0x4] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0x5] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0x6] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0x7] = {
		"Model A",
		DTB_DIR "bcm2835-rpi-a.dtb",
		false,
	},
	[0x8] = {
		"Model A",
		DTB_DIR "bcm2835-rpi-a.dtb",
		false,
	},
	[0x9] = {
		"Model A",
		DTB_DIR "bcm2835-rpi-a.dtb",
		false,
	},
	[0xd] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0xe] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0xf] = {
		"Model B rev2",
		DTB_DIR "bcm2835-rpi-b-rev2.dtb",
		true,
	},
	[0x10] = {
		"Model B+",
		DTB_DIR "bcm2835-rpi-b-plus.dtb",
		true,
	},
	[0x11] = {
		"Compute Module",
		DTB_DIR "bcm2835-rpi-cm.dtb",
		false,
	},
	[0x12] = {
		"Model A+",
		DTB_DIR "bcm2835-rpi-a-plus.dtb",
		false,
	},
	[0x13] = {
		"Model B+",
		DTB_DIR "bcm2835-rpi-b-plus.dtb",
		true,
	},
	[0x14] = {
		"Compute Module",
		DTB_DIR "bcm2835-rpi-cm.dtb",
		false,
	},
	[0x15] = {
		"Model A+",
		DTB_DIR "bcm2835-rpi-a-plus.dtb",
		false,
	},
};

static uint32_t revision;
static uint32_t rev_scheme;
static uint32_t rev_type;
static const struct rpi_model *model;

#ifdef CONFIG_ARM64
static struct mm_region bcm2837_mem_map[] = {
	{
		.virt = 0x00000000UL,
		.phys = 0x00000000UL,
		.size = 0x3f000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
			 PTE_BLOCK_INNER_SHARE
	}, {
		.virt = 0x3f000000UL,
		.phys = 0x3f000000UL,
		.size = 0x01000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE |
			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
	}, {
		/* List terminator */
		0,
	}
};

struct mm_region *mem_map = bcm2837_mem_map;
#endif

int dram_init(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg);
	BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	if (ret) {
		printf("bcm2835: Could not query ARM memory size\n");
		return -1;
	}

	gd->ram_size = msg->get_arm_mem.body.resp.mem_size;

	return 0;
}

static void set_fdtfile(void)
{
	const char *fdtfile;

	if (getenv("fdtfile"))
		return;

	fdtfile = model->fdtfile;
	env_set("fdtfile", fdtfile);
}

/*
 * If the firmware provided a valid FDT at boot time, let's expose it in
 * ${fdt_addr} so it may be passed unmodified to the kernel.
 */
static void set_fdt_addr(void)
{
	if (getenv("fdt_addr"))
		return;

	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
		return;

	setenv_hex("fdt_addr", fw_dtb_pointer);
}

/*
 * Prevent relocation from stomping on a firmware provided FDT blob.
 */
unsigned long board_get_usable_ram_top(unsigned long total_size)
{
	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
		return gd->ram_top;
	return fw_dtb_pointer & ~0xffff;
}

static void set_usbethaddr(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
	int ret;

	if (!model->has_onboard_eth)
		return;

	if (getenv("usbethaddr"))
		return;

	BCM2835_MBOX_INIT_HDR(msg);
	BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	if (ret) {
		printf("bcm2835: Could not query MAC address\n");
		/* Ignore error; not critical */
		return;
	}

	eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);

	if (!getenv("ethaddr"))
		env_set("ethaddr", getenv("usbethaddr"));

	return;
}

#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
static void set_board_info(void)
{
	char s[11];

	snprintf(s, sizeof(s), "0x%X", revision);
	env_set("board_revision", s);
	snprintf(s, sizeof(s), "%d", rev_scheme);
	env_set("board_rev_scheme", s);
	/* Can't rename this to board_rev_type since it's an ABI for scripts */
	snprintf(s, sizeof(s), "0x%X", rev_type);
	env_set("board_rev", s);
	env_set("board_name", model->name);
}
#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */

static void set_serial_number(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
	int ret;
	char serial_string[17] = { 0 };

	if (getenv("serial#"))
		return;

	BCM2835_MBOX_INIT_HDR(msg);
	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	if (ret) {
		printf("bcm2835: Could not query board serial\n");
		/* Ignore error; not critical */
		return;
	}

	snprintf(serial_string, sizeof(serial_string), "%016" PRIx64,
		 msg->get_board_serial.body.resp.serial);
	env_set("serial#", serial_string);
}

int misc_init_r(void)
{
	set_fdt_addr();
	set_fdtfile();
	set_usbethaddr();
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	set_board_info();
#endif
	set_serial_number();

	return 0;
}

static void get_board_rev(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
	int ret;
	const struct rpi_model *models;
	uint32_t models_count;

	BCM2835_MBOX_INIT_HDR(msg);
	BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	if (ret) {
		printf("bcm2835: Could not query board revision\n");
		/* Ignore error; not critical */
		return;
	}

	/*
	 * For details of old-vs-new scheme, see:
	 * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
	 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
	 * (a few posts down)
	 *
	 * For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
	 * lower byte to use as the board rev:
	 * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
	 * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
	 */
	revision = msg->get_board_rev.body.resp.rev;
	if (revision & 0x800000) {
		rev_scheme = 1;
		rev_type = (revision >> 4) & 0xff;
		models = rpi_models_new_scheme;
		models_count = ARRAY_SIZE(rpi_models_new_scheme);
	} else {
		rev_scheme = 0;
		rev_type = revision & 0xff;
		models = rpi_models_old_scheme;
		models_count = ARRAY_SIZE(rpi_models_old_scheme);
	}
	if (rev_type >= models_count) {
		printf("RPI: Board rev 0x%x outside known range\n", rev_type);
		model = &rpi_model_unknown;
	} else if (!models[rev_type].name) {
		printf("RPI: Board rev 0x%x unknown\n", rev_type);
		model = &rpi_model_unknown;
	} else {
		model = &models[rev_type];
	}

	printf("RPI %s (0x%x)\n", model->name, revision);
}

#ifndef CONFIG_PL01X_SERIAL
static bool rpi_is_serial_active(void)
{
	int serial_gpio = 15;
	struct udevice *dev;

	/*
	 * The RPi3 disables the mini uart by default. The easiest way to find
	 * out whether it is available is to check if the RX pin is muxed.
	 */

	if (uclass_first_device(UCLASS_GPIO, &dev) || !dev)
		return true;

	if (bcm2835_gpio_get_func_id(dev, serial_gpio) != BCM2835_GPIO_ALT5)
		return false;

	return true;
}

/* Disable mini-UART I/O if it's not pinmuxed to our pins.
 * The firmware only enables it if explicitly done in config.txt: enable_uart=1
 */
static void rpi_disable_inactive_uart(void)
{
	struct udevice *dev;
	struct bcm283x_mu_serial_platdata *plat;

	if (uclass_get_device_by_driver(UCLASS_SERIAL,
					DM_GET_DRIVER(serial_bcm283x_mu),
					&dev) || !dev)
		return;

	if (!rpi_is_serial_active()) {
		plat = dev_get_platdata(dev);
		plat->disabled = true;
	}
}
#endif

int board_init(void)
{
#ifdef CONFIG_HW_WATCHDOG
	hw_watchdog_init();
#endif
#ifndef CONFIG_PL01X_SERIAL
	rpi_disable_inactive_uart();
#endif

	get_board_rev();

	gd->bd->bi_boot_params = 0x100;

	return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
}

/*
 * If the firmware passed a device tree use it for U-Boot.
 */
void *board_fdt_blob_setup(void)
{
	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
		return NULL;
	return (void *)fw_dtb_pointer;
}

int ft_board_setup(void *blob, bd_t *bd)
{
	/*
	 * For now, we simply always add the simplefb DT node. Later, we
	 * should be more intelligent, and e.g. only do this if no enabled DT
	 * node exists for the "real" graphics driver.
	 */
	lcd_dt_simplefb_add_node(blob);

#ifdef CONFIG_EFI_LOADER
	/* Reserve the spin table */
	efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);
#endif

	return 0;
}
Commit	Line	Data
0d04f34a	1	/*
f031f501	2	* (C) Copyright 2012-2016 Stephen Warren
0d04f34a	3	*
a033171b	4	* SPDX-License-Identifier: GPL-2.0
0d04f34a SW	5	*/
	6
	7	#include <common.h>
757cd149	8	#include <inttypes.h>
ea697ae7	9	#include <config.h>
41e98e01	10	#include <dm.h>
1bcf7a30	11	#include <efi_loader.h>
5dfd162e	12	#include <fdt_support.h>
033167c4	13	#include <fdt_simplefb.h>
ea697ae7	14	#include <lcd.h>
cf92e05c	15	#include <memalign.h>
5dfd162e	16	#include <mmc.h>
41e98e01	17	#include <asm/gpio.h>
3f397782	18	#include <asm/arch/mbox.h>
70997d88	19	#include <asm/arch/msg.h>
131a1e60	20	#include <asm/arch/sdhci.h>
0d04f34a	21	#include <asm/global_data.h>
f031f501	22	#include <dm/platform_data/serial_bcm283x_mu.h>
d22a7657 SW	23	#ifdef CONFIG_ARM64
	24	#include <asm/armv8/mmu.h>
	25	#endif
45a6d231	26	#include <watchdog.h>
0d04f34a SW	27
	28	DECLARE_GLOBAL_DATA_PTR;
	29
ade243a2 CS	30	/* From lowlevel_init.S */
	31	extern unsigned long fw_dtb_pointer;
	32
3e16705d	33	/* TODO(sjg@chromium.org): Move these to the msg.c file */
3f397782 SW	34	struct msg_get_arm_mem {
	35	struct bcm2835_mbox_hdr hdr;
	36	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
	37	u32 end_tag;
	38	};
	39
6fe7845a SW	40	struct msg_get_board_rev {
	41	struct bcm2835_mbox_hdr hdr;
	42	struct bcm2835_mbox_tag_get_board_rev get_board_rev;
	43	u32 end_tag;
	44	};
	45
757cd149 LR	46	struct msg_get_board_serial {
	47	struct bcm2835_mbox_hdr hdr;
	48	struct bcm2835_mbox_tag_get_board_serial get_board_serial;
	49	u32 end_tag;
	50	};
	51
4f80a06d SW	52	struct msg_get_mac_address {
	53	struct bcm2835_mbox_hdr hdr;
	54	struct bcm2835_mbox_tag_get_mac_address get_mac_address;
	55	u32 end_tag;
	56	};
	57
131a1e60 SW	58	struct msg_get_clock_rate {
	59	struct bcm2835_mbox_hdr hdr;
	60	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
	61	u32 end_tag;
	62	};
	63
5d3c4ba1 TT	64	#ifdef CONFIG_ARM64
	65	#define DTB_DIR "broadcom/"
	66	#else
	67	#define DTB_DIR ""
	68	#endif
	69
dbe6f1eb SW	70	/*
	71	* http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
	72	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
c4ea1edb	73	* http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
dba060ce SW	74	*
	75	* In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
	76	* ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
	77	* Foundation stated that the following source was accurate:
	78	* https://github.com/AndrewFromMelbourne/raspberry_pi_revision
dbe6f1eb	79	*/
c4ea1edb	80	struct rpi_model {
6fe7845a SW	81	const char *name;
6fe7845a SW	82	const char *fdtfile;
3207d8fc	83	bool has_onboard_eth;
c4ea1edb SW	84	};
	85
	86	static const struct rpi_model rpi_model_unknown = {
	87	"Unknown model",
5d3c4ba1	88	DTB_DIR "bcm283x-rpi-other.dtb",
c4ea1edb SW	89	false,
	90	};
	91
	92	static const struct rpi_model rpi_models_new_scheme[] = {
dbe6f1eb	93	[0x4] = {
46414296	94	"2 Model B",
5d3c4ba1	95	DTB_DIR "bcm2836-rpi-2-b.dtb",
46414296 SW	96	true,
46414296 SW	97	},
7233fb31 SW	98	[0x8] = {
7233fb31 SW	99	"3 Model B",
5d3c4ba1	100	DTB_DIR "bcm2837-rpi-3-b.dtb",
7233fb31 SW	101	true,
7233fb31 SW	102	},
af7c03ea SW	103	[0x9] = {
af7c03ea SW	104	"Zero",
5d3c4ba1	105	DTB_DIR "bcm2835-rpi-zero.dtb",
af7c03ea SW	106	false,
af7c03ea SW	107	},
c4ea1edb SW	108	};
	109
	110	static const struct rpi_model rpi_models_old_scheme[] = {
dbe6f1eb	111	[0x2] = {
7443a9c4	112	"Model B",
5d3c4ba1	113	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	114	true,
6fe7845a	115	},
dbe6f1eb	116	[0x3] = {
7443a9c4	117	"Model B",
5d3c4ba1	118	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	119	true,
6fe7845a	120	},
dbe6f1eb	121	[0x4] = {
7443a9c4	122	"Model B rev2",
5d3c4ba1	123	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	124	true,
6fe7845a	125	},
dbe6f1eb	126	[0x5] = {
7443a9c4	127	"Model B rev2",
5d3c4ba1	128	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	129	true,
6fe7845a	130	},
dbe6f1eb	131	[0x6] = {
7443a9c4	132	"Model B rev2",
5d3c4ba1	133	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	134	true,
6fe7845a	135	},
dbe6f1eb	136	[0x7] = {
6fe7845a	137	"Model A",
5d3c4ba1	138	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	139	false,
6fe7845a	140	},
dbe6f1eb	141	[0x8] = {
6fe7845a	142	"Model A",
5d3c4ba1	143	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	144	false,
6fe7845a	145	},
dbe6f1eb	146	[0x9] = {
6fe7845a	147	"Model A",
5d3c4ba1	148	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	149	false,
6fe7845a	150	},
dbe6f1eb	151	[0xd] = {
6fe7845a	152	"Model B rev2",
5d3c4ba1	153	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	154	true,
6fe7845a	155	},
dbe6f1eb	156	[0xe] = {
6fe7845a	157	"Model B rev2",
5d3c4ba1	158	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	159	true,
6fe7845a	160	},
dbe6f1eb	161	[0xf] = {
6fe7845a	162	"Model B rev2",
5d3c4ba1	163	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	164	true,
6fe7845a	165	},
dbe6f1eb	166	[0x10] = {
6fe7845a	167	"Model B+",
5d3c4ba1	168	DTB_DIR "bcm2835-rpi-b-plus.dtb",
3207d8fc	169	true,
6fe7845a	170	},
dbe6f1eb	171	[0x11] = {
6fe7845a	172	"Compute Module",
5d3c4ba1	173	DTB_DIR "bcm2835-rpi-cm.dtb",
3207d8fc	174	false,
6fe7845a	175	},
dbe6f1eb	176	[0x12] = {
47705eff	177	"Model A+",
5d3c4ba1	178	DTB_DIR "bcm2835-rpi-a-plus.dtb",
47705eff SW	179	false,
47705eff SW	180	},
dbe6f1eb	181	[0x13] = {
787affb4	182	"Model B+",
5d3c4ba1	183	DTB_DIR "bcm2835-rpi-b-plus.dtb",
787affb4 SW	184	true,
787affb4 SW	185	},
dbe6f1eb	186	[0x14] = {
787affb4	187	"Compute Module",
5d3c4ba1	188	DTB_DIR "bcm2835-rpi-cm.dtb",
787affb4 SW	189	false,
787affb4 SW	190	},
dbe6f1eb	191	[0x15] = {
79ad5cef	192	"Model A+",
5d3c4ba1	193	DTB_DIR "bcm2835-rpi-a-plus.dtb",
79ad5cef LR	194	false,
79ad5cef LR	195	},
6fe7845a SW	196	};
6fe7845a SW	197
c4ea1edb SW	198	static uint32_t revision;
	199	static uint32_t rev_scheme;
	200	static uint32_t rev_type;
	201	static const struct rpi_model *model;
6fe7845a	202
d22a7657 SW	203	#ifdef CONFIG_ARM64
	204	static struct mm_region bcm2837_mem_map[] = {
	205	{
cd4b0c5f YS	206	.virt = 0x00000000UL,
cd4b0c5f YS	207	.phys = 0x00000000UL,
d22a7657 SW	208	.size = 0x3f000000UL,
	209	.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) \|
	210	PTE_BLOCK_INNER_SHARE
	211	}, {
cd4b0c5f YS	212	.virt = 0x3f000000UL,
cd4b0c5f YS	213	.phys = 0x3f000000UL,
d22a7657 SW	214	.size = 0x01000000UL,
	215	.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) \|
	216	PTE_BLOCK_NON_SHARE \|
	217	PTE_BLOCK_PXN \| PTE_BLOCK_UXN
	218	}, {
	219	/* List terminator */
	220	0,
	221	}
	222	};
	223
	224	struct mm_region *mem_map = bcm2837_mem_map;
	225	#endif
	226
0d04f34a SW	227	int dram_init(void)
0d04f34a SW	228	{
927753ae	229	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
3f397782 SW	230	int ret;
	231
	232	BCM2835_MBOX_INIT_HDR(msg);
	233	BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
	234
	235	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	236	if (ret) {
	237	printf("bcm2835: Could not query ARM memory size\n");
	238	return -1;
	239	}
	240
	241	gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
0d04f34a SW	242
	243	return 0;
	244	}
	245
6fe7845a SW	246	static void set_fdtfile(void)
	247	{
	248	const char *fdtfile;
	249
	250	if (getenv("fdtfile"))
	251	return;
	252
c4ea1edb	253	fdtfile = model->fdtfile;
382bee57	254	env_set("fdtfile", fdtfile);
6fe7845a SW	255	}
6fe7845a SW	256
ade243a2 CS	257	/*
	258	* If the firmware provided a valid FDT at boot time, let's expose it in
	259	* ${fdt_addr} so it may be passed unmodified to the kernel.
	260	*/
	261	static void set_fdt_addr(void)
	262	{
	263	if (getenv("fdt_addr"))
	264	return;
	265
	266	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
	267	return;
	268
	269	setenv_hex("fdt_addr", fw_dtb_pointer);
	270	}
	271
	272	/*
	273	* Prevent relocation from stomping on a firmware provided FDT blob.
	274	*/
	275	unsigned long board_get_usable_ram_top(unsigned long total_size)
	276	{
	277	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
	278	return gd->ram_top;
	279	return fw_dtb_pointer & ~0xffff;
	280	}
	281
6fe7845a	282	static void set_usbethaddr(void)
4f80a06d	283	{
927753ae	284	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
4f80a06d SW	285	int ret;
4f80a06d SW	286
c4ea1edb	287	if (!model->has_onboard_eth)
3207d8fc SW	288	return;
3207d8fc SW	289
4f80a06d	290	if (getenv("usbethaddr"))
6fe7845a	291	return;
4f80a06d SW	292
	293	BCM2835_MBOX_INIT_HDR(msg);
	294	BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
	295
	296	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	297	if (ret) {
	298	printf("bcm2835: Could not query MAC address\n");
	299	/* Ignore error; not critical */
6fe7845a	300	return;
4f80a06d SW	301	}
	302
	303	eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
	304
859f1437	305	if (!getenv("ethaddr"))
382bee57	306	env_set("ethaddr", getenv("usbethaddr"));
859f1437	307
6fe7845a SW	308	return;
	309	}
	310
bff78567 GG	311	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	312	static void set_board_info(void)
	313	{
c4ea1edb SW	314	char s[11];
	315
	316	snprintf(s, sizeof(s), "0x%X", revision);
382bee57	317	env_set("board_revision", s);
c4ea1edb	318	snprintf(s, sizeof(s), "%d", rev_scheme);
382bee57	319	env_set("board_rev_scheme", s);
c4ea1edb SW	320	/* Can't rename this to board_rev_type since it's an ABI for scripts */
c4ea1edb SW	321	snprintf(s, sizeof(s), "0x%X", rev_type);
382bee57 SG	322	env_set("board_rev", s);
382bee57 SG	323	env_set("board_name", model->name);
bff78567 GG	324	}
	325	#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
	326
757cd149 LR	327	static void set_serial_number(void)
	328	{
	329	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
	330	int ret;
	331	char serial_string[17] = { 0 };
	332
	333	if (getenv("serial#"))
	334	return;
	335
	336	BCM2835_MBOX_INIT_HDR(msg);
	337	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
	338
	339	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	340	if (ret) {
	341	printf("bcm2835: Could not query board serial\n");
	342	/* Ignore error; not critical */
	343	return;
	344	}
	345
	346	snprintf(serial_string, sizeof(serial_string), "%016" PRIx64,
	347	msg->get_board_serial.body.resp.serial);
382bee57	348	env_set("serial#", serial_string);
757cd149 LR	349	}
757cd149 LR	350
6fe7845a SW	351	int misc_init_r(void)
6fe7845a SW	352	{
ade243a2	353	set_fdt_addr();
6fe7845a SW	354	set_fdtfile();
6fe7845a SW	355	set_usbethaddr();
bff78567 GG	356	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	357	set_board_info();
	358	#endif
757cd149 LR	359	set_serial_number();
757cd149 LR	360
4f80a06d SW	361	return 0;
	362	}
	363
6fe7845a SW	364	static void get_board_rev(void)
6fe7845a SW	365	{
927753ae	366	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
6fe7845a	367	int ret;
c4ea1edb SW	368	const struct rpi_model *models;
c4ea1edb SW	369	uint32_t models_count;
6fe7845a SW	370
	371	BCM2835_MBOX_INIT_HDR(msg);
	372	BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
	373
	374	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	375	if (ret) {
	376	printf("bcm2835: Could not query board revision\n");
	377	/* Ignore error; not critical */
	378	return;
	379	}
	380
46414296 SW	381	/*
	382	* For details of old-vs-new scheme, see:
	383	* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
	384	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
	385	* (a few posts down)
95b4f112 SW	386	*
	387	* For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
	388	* lower byte to use as the board rev:
	389	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
	390	* http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
46414296	391	*/
c4ea1edb SW	392	revision = msg->get_board_rev.body.resp.rev;
	393	if (revision & 0x800000) {
	394	rev_scheme = 1;
	395	rev_type = (revision >> 4) & 0xff;
	396	models = rpi_models_new_scheme;
	397	models_count = ARRAY_SIZE(rpi_models_new_scheme);
	398	} else {
	399	rev_scheme = 0;
	400	rev_type = revision & 0xff;
	401	models = rpi_models_old_scheme;
	402	models_count = ARRAY_SIZE(rpi_models_old_scheme);
47705eff	403	}
c4ea1edb SW	404	if (rev_type >= models_count) {
	405	printf("RPI: Board rev 0x%x outside known range\n", rev_type);
	406	model = &rpi_model_unknown;
	407	} else if (!models[rev_type].name) {
	408	printf("RPI: Board rev 0x%x unknown\n", rev_type);
	409	model = &rpi_model_unknown;
	410	} else {
	411	model = &models[rev_type];
47705eff	412	}
914627fe	413
c4ea1edb	414	printf("RPI %s (0x%x)\n", model->name, revision);
6fe7845a SW	415	}
6fe7845a SW	416
601147b0 AG	417	#ifndef CONFIG_PL01X_SERIAL
	418	static bool rpi_is_serial_active(void)
	419	{
	420	int serial_gpio = 15;
	421	struct udevice *dev;
	422
	423	/*
	424	* The RPi3 disables the mini uart by default. The easiest way to find
	425	* out whether it is available is to check if the RX pin is muxed.
	426	*/
	427
	428	if (uclass_first_device(UCLASS_GPIO, &dev) \|\| !dev)
	429	return true;
	430
	431	if (bcm2835_gpio_get_func_id(dev, serial_gpio) != BCM2835_GPIO_ALT5)
	432	return false;
	433
	434	return true;
	435	}
d8396a32 FV	436
	437	/* Disable mini-UART I/O if it's not pinmuxed to our pins.
	438	* The firmware only enables it if explicitly done in config.txt: enable_uart=1
	439	*/
	440	static void rpi_disable_inactive_uart(void)
	441	{
	442	struct udevice *dev;
	443	struct bcm283x_mu_serial_platdata *plat;
	444
	445	if (uclass_get_device_by_driver(UCLASS_SERIAL,
	446	DM_GET_DRIVER(serial_bcm283x_mu),
	447	&dev) \|\| !dev)
	448	return;
	449
	450	if (!rpi_is_serial_active()) {
	451	plat = dev_get_platdata(dev);
	452	plat->disabled = true;
	453	}
	454	}
601147b0 AG	455	#endif
601147b0 AG	456
d8396a32	457	int board_init(void)
601147b0	458	{
45a6d231 PP	459	#ifdef CONFIG_HW_WATCHDOG
	460	hw_watchdog_init();
	461	#endif
601147b0	462	#ifndef CONFIG_PL01X_SERIAL
d8396a32	463	rpi_disable_inactive_uart();
601147b0 AG	464	#endif
601147b0 AG	465
d8396a32 FV	466	get_board_rev();
	467
	468	gd->bd->bi_boot_params = 0x100;
	469
70997d88	470	return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
601147b0 AG	471	}
601147b0 AG	472
82f766d1 AD	473	/*
	474	* If the firmware passed a device tree use it for U-Boot.
	475	*/
	476	void *board_fdt_blob_setup(void)
	477	{
	478	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
	479	return NULL;
	480	return (void *)fw_dtb_pointer;
	481	}
	482
e895a4b0	483	int ft_board_setup(void blob, bd_t bd)
ea697ae7 SW	484	{
	485	/*
	486	* For now, we simply always add the simplefb DT node. Later, we
	487	* should be more intelligent, and e.g. only do this if no enabled DT
	488	* node exists for the "real" graphics driver.
	489	*/
	490	lcd_dt_simplefb_add_node(blob);
e895a4b0	491
1bcf7a30 AG	492	#ifdef CONFIG_EFI_LOADER
	493	/* Reserve the spin table */
	494	efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);
	495	#endif
	496
e895a4b0	497	return 0;
ea697ae7	498	}