[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

DECLARE_GLOBAL_DATA_PTR;

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


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;
	setenv("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"))
		setenv("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);
	setenv("board_revision", s);
	snprintf(s, sizeof(s), "%d", rev_scheme);
	setenv("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);
	setenv("board_rev", s);
	setenv("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);
	setenv("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)
{
#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);
}

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
0d04f34a SW	26
	27	DECLARE_GLOBAL_DATA_PTR;
	28
ade243a2 CS	29	/* From lowlevel_init.S */
	30	extern unsigned long fw_dtb_pointer;
	31
11506666	32
3f397782 SW	33	struct msg_get_arm_mem {
	34	struct bcm2835_mbox_hdr hdr;
	35	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
	36	u32 end_tag;
	37	};
	38
6fe7845a SW	39	struct msg_get_board_rev {
	40	struct bcm2835_mbox_hdr hdr;
	41	struct bcm2835_mbox_tag_get_board_rev get_board_rev;
	42	u32 end_tag;
	43	};
	44
757cd149 LR	45	struct msg_get_board_serial {
	46	struct bcm2835_mbox_hdr hdr;
	47	struct bcm2835_mbox_tag_get_board_serial get_board_serial;
	48	u32 end_tag;
	49	};
	50
4f80a06d SW	51	struct msg_get_mac_address {
	52	struct bcm2835_mbox_hdr hdr;
	53	struct bcm2835_mbox_tag_get_mac_address get_mac_address;
	54	u32 end_tag;
	55	};
	56
131a1e60 SW	57	struct msg_get_clock_rate {
	58	struct bcm2835_mbox_hdr hdr;
	59	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
	60	u32 end_tag;
	61	};
	62
5d3c4ba1 TT	63	#ifdef CONFIG_ARM64
	64	#define DTB_DIR "broadcom/"
	65	#else
	66	#define DTB_DIR ""
	67	#endif
	68
dbe6f1eb SW	69	/*
	70	* http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
	71	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
c4ea1edb	72	* http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
dba060ce SW	73	*
	74	* In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
	75	* ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
	76	* Foundation stated that the following source was accurate:
	77	* https://github.com/AndrewFromMelbourne/raspberry_pi_revision
dbe6f1eb	78	*/
c4ea1edb	79	struct rpi_model {
6fe7845a SW	80	const char *name;
6fe7845a SW	81	const char *fdtfile;
3207d8fc	82	bool has_onboard_eth;
c4ea1edb SW	83	};
	84
	85	static const struct rpi_model rpi_model_unknown = {
	86	"Unknown model",
5d3c4ba1	87	DTB_DIR "bcm283x-rpi-other.dtb",
c4ea1edb SW	88	false,
	89	};
	90
	91	static const struct rpi_model rpi_models_new_scheme[] = {
dbe6f1eb	92	[0x4] = {
46414296	93	"2 Model B",
5d3c4ba1	94	DTB_DIR "bcm2836-rpi-2-b.dtb",
46414296 SW	95	true,
46414296 SW	96	},
7233fb31 SW	97	[0x8] = {
7233fb31 SW	98	"3 Model B",
5d3c4ba1	99	DTB_DIR "bcm2837-rpi-3-b.dtb",
7233fb31 SW	100	true,
7233fb31 SW	101	},
af7c03ea SW	102	[0x9] = {
af7c03ea SW	103	"Zero",
5d3c4ba1	104	DTB_DIR "bcm2835-rpi-zero.dtb",
af7c03ea SW	105	false,
af7c03ea SW	106	},
c4ea1edb SW	107	};
	108
	109	static const struct rpi_model rpi_models_old_scheme[] = {
dbe6f1eb	110	[0x2] = {
7443a9c4	111	"Model B",
5d3c4ba1	112	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	113	true,
6fe7845a	114	},
dbe6f1eb	115	[0x3] = {
7443a9c4	116	"Model B",
5d3c4ba1	117	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	118	true,
6fe7845a	119	},
dbe6f1eb	120	[0x4] = {
7443a9c4	121	"Model B rev2",
5d3c4ba1	122	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	123	true,
6fe7845a	124	},
dbe6f1eb	125	[0x5] = {
7443a9c4	126	"Model B rev2",
5d3c4ba1	127	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	128	true,
6fe7845a	129	},
dbe6f1eb	130	[0x6] = {
7443a9c4	131	"Model B rev2",
5d3c4ba1	132	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	133	true,
6fe7845a	134	},
dbe6f1eb	135	[0x7] = {
6fe7845a	136	"Model A",
5d3c4ba1	137	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	138	false,
6fe7845a	139	},
dbe6f1eb	140	[0x8] = {
6fe7845a	141	"Model A",
5d3c4ba1	142	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	143	false,
6fe7845a	144	},
dbe6f1eb	145	[0x9] = {
6fe7845a	146	"Model A",
5d3c4ba1	147	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	148	false,
6fe7845a	149	},
dbe6f1eb	150	[0xd] = {
6fe7845a	151	"Model B rev2",
5d3c4ba1	152	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	153	true,
6fe7845a	154	},
dbe6f1eb	155	[0xe] = {
6fe7845a	156	"Model B rev2",
5d3c4ba1	157	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	158	true,
6fe7845a	159	},
dbe6f1eb	160	[0xf] = {
6fe7845a	161	"Model B rev2",
5d3c4ba1	162	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	163	true,
6fe7845a	164	},
dbe6f1eb	165	[0x10] = {
6fe7845a	166	"Model B+",
5d3c4ba1	167	DTB_DIR "bcm2835-rpi-b-plus.dtb",
3207d8fc	168	true,
6fe7845a	169	},
dbe6f1eb	170	[0x11] = {
6fe7845a	171	"Compute Module",
5d3c4ba1	172	DTB_DIR "bcm2835-rpi-cm.dtb",
3207d8fc	173	false,
6fe7845a	174	},
dbe6f1eb	175	[0x12] = {
47705eff	176	"Model A+",
5d3c4ba1	177	DTB_DIR "bcm2835-rpi-a-plus.dtb",
47705eff SW	178	false,
47705eff SW	179	},
dbe6f1eb	180	[0x13] = {
787affb4	181	"Model B+",
5d3c4ba1	182	DTB_DIR "bcm2835-rpi-b-plus.dtb",
787affb4 SW	183	true,
787affb4 SW	184	},
dbe6f1eb	185	[0x14] = {
787affb4	186	"Compute Module",
5d3c4ba1	187	DTB_DIR "bcm2835-rpi-cm.dtb",
787affb4 SW	188	false,
787affb4 SW	189	},
dbe6f1eb	190	[0x15] = {
79ad5cef	191	"Model A+",
5d3c4ba1	192	DTB_DIR "bcm2835-rpi-a-plus.dtb",
79ad5cef LR	193	false,
79ad5cef LR	194	},
6fe7845a SW	195	};
6fe7845a SW	196
c4ea1edb SW	197	static uint32_t revision;
	198	static uint32_t rev_scheme;
	199	static uint32_t rev_type;
	200	static const struct rpi_model *model;
6fe7845a	201
d22a7657 SW	202	#ifdef CONFIG_ARM64
	203	static struct mm_region bcm2837_mem_map[] = {
	204	{
cd4b0c5f YS	205	.virt = 0x00000000UL,
cd4b0c5f YS	206	.phys = 0x00000000UL,
d22a7657 SW	207	.size = 0x3f000000UL,
	208	.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) \|
	209	PTE_BLOCK_INNER_SHARE
	210	}, {
cd4b0c5f YS	211	.virt = 0x3f000000UL,
cd4b0c5f YS	212	.phys = 0x3f000000UL,
d22a7657 SW	213	.size = 0x01000000UL,
	214	.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) \|
	215	PTE_BLOCK_NON_SHARE \|
	216	PTE_BLOCK_PXN \| PTE_BLOCK_UXN
	217	}, {
	218	/* List terminator */
	219	0,
	220	}
	221	};
	222
	223	struct mm_region *mem_map = bcm2837_mem_map;
	224	#endif
	225
0d04f34a SW	226	int dram_init(void)
0d04f34a SW	227	{
927753ae	228	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
3f397782 SW	229	int ret;
	230
	231	BCM2835_MBOX_INIT_HDR(msg);
	232	BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
	233
	234	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	235	if (ret) {
	236	printf("bcm2835: Could not query ARM memory size\n");
	237	return -1;
	238	}
	239
	240	gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
0d04f34a SW	241
	242	return 0;
	243	}
	244
6fe7845a SW	245	static void set_fdtfile(void)
	246	{
	247	const char *fdtfile;
	248
	249	if (getenv("fdtfile"))
	250	return;
	251
c4ea1edb	252	fdtfile = model->fdtfile;
6fe7845a SW	253	setenv("fdtfile", fdtfile);
	254	}
	255
ade243a2 CS	256	/*
	257	* If the firmware provided a valid FDT at boot time, let's expose it in
	258	* ${fdt_addr} so it may be passed unmodified to the kernel.
	259	*/
	260	static void set_fdt_addr(void)
	261	{
	262	if (getenv("fdt_addr"))
	263	return;
	264
	265	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
	266	return;
	267
	268	setenv_hex("fdt_addr", fw_dtb_pointer);
	269	}
	270
	271	/*
	272	* Prevent relocation from stomping on a firmware provided FDT blob.
	273	*/
	274	unsigned long board_get_usable_ram_top(unsigned long total_size)
	275	{
	276	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
	277	return gd->ram_top;
	278	return fw_dtb_pointer & ~0xffff;
	279	}
	280
6fe7845a	281	static void set_usbethaddr(void)
4f80a06d	282	{
927753ae	283	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
4f80a06d SW	284	int ret;
4f80a06d SW	285
c4ea1edb	286	if (!model->has_onboard_eth)
3207d8fc SW	287	return;
3207d8fc SW	288
4f80a06d	289	if (getenv("usbethaddr"))
6fe7845a	290	return;
4f80a06d SW	291
	292	BCM2835_MBOX_INIT_HDR(msg);
	293	BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
	294
	295	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	296	if (ret) {
	297	printf("bcm2835: Could not query MAC address\n");
	298	/* Ignore error; not critical */
6fe7845a	299	return;
4f80a06d SW	300	}
	301
	302	eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
	303
859f1437 LR	304	if (!getenv("ethaddr"))
	305	setenv("ethaddr", getenv("usbethaddr"));
	306
6fe7845a SW	307	return;
	308	}
	309
bff78567 GG	310	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	311	static void set_board_info(void)
	312	{
c4ea1edb SW	313	char s[11];
	314
	315	snprintf(s, sizeof(s), "0x%X", revision);
	316	setenv("board_revision", s);
	317	snprintf(s, sizeof(s), "%d", rev_scheme);
	318	setenv("board_rev_scheme", s);
	319	/* Can't rename this to board_rev_type since it's an ABI for scripts */
	320	snprintf(s, sizeof(s), "0x%X", rev_type);
	321	setenv("board_rev", s);
	322	setenv("board_name", model->name);
bff78567 GG	323	}
	324	#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
	325
757cd149 LR	326	static void set_serial_number(void)
	327	{
	328	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
	329	int ret;
	330	char serial_string[17] = { 0 };
	331
	332	if (getenv("serial#"))
	333	return;
	334
	335	BCM2835_MBOX_INIT_HDR(msg);
	336	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
	337
	338	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	339	if (ret) {
	340	printf("bcm2835: Could not query board serial\n");
	341	/* Ignore error; not critical */
	342	return;
	343	}
	344
	345	snprintf(serial_string, sizeof(serial_string), "%016" PRIx64,
	346	msg->get_board_serial.body.resp.serial);
	347	setenv("serial#", serial_string);
	348	}
	349
6fe7845a SW	350	int misc_init_r(void)
6fe7845a SW	351	{
ade243a2	352	set_fdt_addr();
6fe7845a SW	353	set_fdtfile();
6fe7845a SW	354	set_usbethaddr();
bff78567 GG	355	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	356	set_board_info();
	357	#endif
757cd149 LR	358	set_serial_number();
757cd149 LR	359
4f80a06d SW	360	return 0;
	361	}
	362
6fe7845a SW	363	static void get_board_rev(void)
6fe7845a SW	364	{
927753ae	365	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
6fe7845a	366	int ret;
c4ea1edb SW	367	const struct rpi_model *models;
c4ea1edb SW	368	uint32_t models_count;
6fe7845a SW	369
	370	BCM2835_MBOX_INIT_HDR(msg);
	371	BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
	372
	373	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	374	if (ret) {
	375	printf("bcm2835: Could not query board revision\n");
	376	/* Ignore error; not critical */
	377	return;
	378	}
	379
46414296 SW	380	/*
	381	* For details of old-vs-new scheme, see:
	382	* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
	383	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
	384	* (a few posts down)
95b4f112 SW	385	*
	386	* For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
	387	* lower byte to use as the board rev:
	388	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
	389	* http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
46414296	390	*/
c4ea1edb SW	391	revision = msg->get_board_rev.body.resp.rev;
	392	if (revision & 0x800000) {
	393	rev_scheme = 1;
	394	rev_type = (revision >> 4) & 0xff;
	395	models = rpi_models_new_scheme;
	396	models_count = ARRAY_SIZE(rpi_models_new_scheme);
	397	} else {
	398	rev_scheme = 0;
	399	rev_type = revision & 0xff;
	400	models = rpi_models_old_scheme;
	401	models_count = ARRAY_SIZE(rpi_models_old_scheme);
47705eff	402	}
c4ea1edb SW	403	if (rev_type >= models_count) {
	404	printf("RPI: Board rev 0x%x outside known range\n", rev_type);
	405	model = &rpi_model_unknown;
	406	} else if (!models[rev_type].name) {
	407	printf("RPI: Board rev 0x%x unknown\n", rev_type);
	408	model = &rpi_model_unknown;
	409	} else {
	410	model = &models[rev_type];
47705eff	411	}
914627fe	412
c4ea1edb	413	printf("RPI %s (0x%x)\n", model->name, revision);
6fe7845a SW	414	}
6fe7845a SW	415
601147b0 AG	416	#ifndef CONFIG_PL01X_SERIAL
	417	static bool rpi_is_serial_active(void)
	418	{
	419	int serial_gpio = 15;
	420	struct udevice *dev;
	421
	422	/*
	423	* The RPi3 disables the mini uart by default. The easiest way to find
	424	* out whether it is available is to check if the RX pin is muxed.
	425	*/
	426
	427	if (uclass_first_device(UCLASS_GPIO, &dev) \|\| !dev)
	428	return true;
	429
	430	if (bcm2835_gpio_get_func_id(dev, serial_gpio) != BCM2835_GPIO_ALT5)
	431	return false;
	432
	433	return true;
	434	}
d8396a32 FV	435
	436	/* Disable mini-UART I/O if it's not pinmuxed to our pins.
	437	* The firmware only enables it if explicitly done in config.txt: enable_uart=1
	438	*/
	439	static void rpi_disable_inactive_uart(void)
	440	{
	441	struct udevice *dev;
	442	struct bcm283x_mu_serial_platdata *plat;
	443
	444	if (uclass_get_device_by_driver(UCLASS_SERIAL,
	445	DM_GET_DRIVER(serial_bcm283x_mu),
	446	&dev) \|\| !dev)
	447	return;
	448
	449	if (!rpi_is_serial_active()) {
	450	plat = dev_get_platdata(dev);
	451	plat->disabled = true;
	452	}
	453	}
601147b0 AG	454	#endif
601147b0 AG	455
d8396a32	456	int board_init(void)
601147b0 AG	457	{
601147b0 AG	458	#ifndef CONFIG_PL01X_SERIAL
d8396a32	459	rpi_disable_inactive_uart();
601147b0 AG	460	#endif
601147b0 AG	461
d8396a32 FV	462	get_board_rev();
	463
	464	gd->bd->bi_boot_params = 0x100;
	465
70997d88	466	return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
601147b0 AG	467	}
601147b0 AG	468
e895a4b0	469	int ft_board_setup(void blob, bd_t bd)
ea697ae7 SW	470	{
	471	/*
	472	* For now, we simply always add the simplefb DT node. Later, we
	473	* should be more intelligent, and e.g. only do this if no enabled DT
	474	* node exists for the "real" graphics driver.
	475	*/
	476	lcd_dt_simplefb_add_node(blob);
e895a4b0	477
1bcf7a30 AG	478	#ifdef CONFIG_EFI_LOADER
	479	/* Reserve the spin table */
	480	efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);
	481	#endif
	482
e895a4b0	483	return 0;
ea697ae7	484	}