[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>
#include <dm/pinctrl.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,
	},
	[0xC] = {
		"Zero W",
		DTB_DIR "bcm2835-rpi-zero-w.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 (env_get("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 (env_get("fdt_addr"))
		return;

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

	env_set_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 (env_get("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_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);

	if (!env_get("ethaddr"))
		env_set("ethaddr", env_get("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 (env_get("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);
}

int board_init(void)
{
#ifdef CONFIG_HW_WATCHDOG
	hw_watchdog_init();
#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>
caf2233b	27	#include <dm/pinctrl.h>
0d04f34a SW	28
	29	DECLARE_GLOBAL_DATA_PTR;
	30
ade243a2 CS	31	/* From lowlevel_init.S */
	32	extern unsigned long fw_dtb_pointer;
	33
3e16705d	34	/* TODO(sjg@chromium.org): Move these to the msg.c file */
3f397782 SW	35	struct msg_get_arm_mem {
	36	struct bcm2835_mbox_hdr hdr;
	37	struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
	38	u32 end_tag;
	39	};
	40
6fe7845a SW	41	struct msg_get_board_rev {
	42	struct bcm2835_mbox_hdr hdr;
	43	struct bcm2835_mbox_tag_get_board_rev get_board_rev;
	44	u32 end_tag;
	45	};
	46
757cd149 LR	47	struct msg_get_board_serial {
	48	struct bcm2835_mbox_hdr hdr;
	49	struct bcm2835_mbox_tag_get_board_serial get_board_serial;
	50	u32 end_tag;
	51	};
	52
4f80a06d SW	53	struct msg_get_mac_address {
	54	struct bcm2835_mbox_hdr hdr;
	55	struct bcm2835_mbox_tag_get_mac_address get_mac_address;
	56	u32 end_tag;
	57	};
	58
131a1e60 SW	59	struct msg_get_clock_rate {
	60	struct bcm2835_mbox_hdr hdr;
	61	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
	62	u32 end_tag;
	63	};
	64
5d3c4ba1 TT	65	#ifdef CONFIG_ARM64
	66	#define DTB_DIR "broadcom/"
	67	#else
	68	#define DTB_DIR ""
	69	#endif
	70
dbe6f1eb SW	71	/*
	72	* http://raspberryalphaomega.org.uk/2013/02/06/automatic-raspberry-pi-board-revision-detection-model-a-b1-and-b2/
	73	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=32733
c4ea1edb	74	* http://git.drogon.net/?p=wiringPi;a=blob;f=wiringPi/wiringPi.c;h=503151f61014418b9c42f4476a6086f75cd4e64b;hb=refs/heads/master#l922
dba060ce SW	75	*
	76	* In http://lists.denx.de/pipermail/u-boot/2016-January/243752.html
	77	* ("[U-Boot] [PATCH] rpi: fix up Model B entries") Dom Cobley at the RPi
	78	* Foundation stated that the following source was accurate:
	79	* https://github.com/AndrewFromMelbourne/raspberry_pi_revision
dbe6f1eb	80	*/
c4ea1edb	81	struct rpi_model {
6fe7845a SW	82	const char *name;
6fe7845a SW	83	const char *fdtfile;
3207d8fc	84	bool has_onboard_eth;
c4ea1edb SW	85	};
	86
	87	static const struct rpi_model rpi_model_unknown = {
	88	"Unknown model",
5d3c4ba1	89	DTB_DIR "bcm283x-rpi-other.dtb",
c4ea1edb SW	90	false,
	91	};
	92
	93	static const struct rpi_model rpi_models_new_scheme[] = {
dbe6f1eb	94	[0x4] = {
46414296	95	"2 Model B",
5d3c4ba1	96	DTB_DIR "bcm2836-rpi-2-b.dtb",
46414296 SW	97	true,
46414296 SW	98	},
7233fb31 SW	99	[0x8] = {
7233fb31 SW	100	"3 Model B",
5d3c4ba1	101	DTB_DIR "bcm2837-rpi-3-b.dtb",
7233fb31 SW	102	true,
7233fb31 SW	103	},
af7c03ea SW	104	[0x9] = {
af7c03ea SW	105	"Zero",
5d3c4ba1	106	DTB_DIR "bcm2835-rpi-zero.dtb",
af7c03ea SW	107	false,
af7c03ea SW	108	},
8993056f DK	109	[0xC] = {
	110	"Zero W",
	111	DTB_DIR "bcm2835-rpi-zero-w.dtb",
	112	false,
	113	},
c4ea1edb SW	114	};
	115
	116	static const struct rpi_model rpi_models_old_scheme[] = {
dbe6f1eb	117	[0x2] = {
7443a9c4	118	"Model B",
5d3c4ba1	119	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	120	true,
6fe7845a	121	},
dbe6f1eb	122	[0x3] = {
7443a9c4	123	"Model B",
5d3c4ba1	124	DTB_DIR "bcm2835-rpi-b.dtb",
3207d8fc	125	true,
6fe7845a	126	},
dbe6f1eb	127	[0x4] = {
7443a9c4	128	"Model B rev2",
5d3c4ba1	129	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	130	true,
6fe7845a	131	},
dbe6f1eb	132	[0x5] = {
7443a9c4	133	"Model B rev2",
5d3c4ba1	134	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	135	true,
6fe7845a	136	},
dbe6f1eb	137	[0x6] = {
7443a9c4	138	"Model B rev2",
5d3c4ba1	139	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	140	true,
6fe7845a	141	},
dbe6f1eb	142	[0x7] = {
6fe7845a	143	"Model A",
5d3c4ba1	144	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	145	false,
6fe7845a	146	},
dbe6f1eb	147	[0x8] = {
6fe7845a	148	"Model A",
5d3c4ba1	149	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	150	false,
6fe7845a	151	},
dbe6f1eb	152	[0x9] = {
6fe7845a	153	"Model A",
5d3c4ba1	154	DTB_DIR "bcm2835-rpi-a.dtb",
3207d8fc	155	false,
6fe7845a	156	},
dbe6f1eb	157	[0xd] = {
6fe7845a	158	"Model B rev2",
5d3c4ba1	159	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	160	true,
6fe7845a	161	},
dbe6f1eb	162	[0xe] = {
6fe7845a	163	"Model B rev2",
5d3c4ba1	164	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	165	true,
6fe7845a	166	},
dbe6f1eb	167	[0xf] = {
6fe7845a	168	"Model B rev2",
5d3c4ba1	169	DTB_DIR "bcm2835-rpi-b-rev2.dtb",
3207d8fc	170	true,
6fe7845a	171	},
dbe6f1eb	172	[0x10] = {
6fe7845a	173	"Model B+",
5d3c4ba1	174	DTB_DIR "bcm2835-rpi-b-plus.dtb",
3207d8fc	175	true,
6fe7845a	176	},
dbe6f1eb	177	[0x11] = {
6fe7845a	178	"Compute Module",
5d3c4ba1	179	DTB_DIR "bcm2835-rpi-cm.dtb",
3207d8fc	180	false,
6fe7845a	181	},
dbe6f1eb	182	[0x12] = {
47705eff	183	"Model A+",
5d3c4ba1	184	DTB_DIR "bcm2835-rpi-a-plus.dtb",
47705eff SW	185	false,
47705eff SW	186	},
dbe6f1eb	187	[0x13] = {
787affb4	188	"Model B+",
5d3c4ba1	189	DTB_DIR "bcm2835-rpi-b-plus.dtb",
787affb4 SW	190	true,
787affb4 SW	191	},
dbe6f1eb	192	[0x14] = {
787affb4	193	"Compute Module",
5d3c4ba1	194	DTB_DIR "bcm2835-rpi-cm.dtb",
787affb4 SW	195	false,
787affb4 SW	196	},
dbe6f1eb	197	[0x15] = {
79ad5cef	198	"Model A+",
5d3c4ba1	199	DTB_DIR "bcm2835-rpi-a-plus.dtb",
79ad5cef LR	200	false,
79ad5cef LR	201	},
6fe7845a SW	202	};
6fe7845a SW	203
c4ea1edb SW	204	static uint32_t revision;
	205	static uint32_t rev_scheme;
	206	static uint32_t rev_type;
	207	static const struct rpi_model *model;
6fe7845a	208
d22a7657 SW	209	#ifdef CONFIG_ARM64
	210	static struct mm_region bcm2837_mem_map[] = {
	211	{
cd4b0c5f YS	212	.virt = 0x00000000UL,
cd4b0c5f YS	213	.phys = 0x00000000UL,
d22a7657 SW	214	.size = 0x3f000000UL,
	215	.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) \|
	216	PTE_BLOCK_INNER_SHARE
	217	}, {
cd4b0c5f YS	218	.virt = 0x3f000000UL,
cd4b0c5f YS	219	.phys = 0x3f000000UL,
d22a7657 SW	220	.size = 0x01000000UL,
	221	.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) \|
	222	PTE_BLOCK_NON_SHARE \|
	223	PTE_BLOCK_PXN \| PTE_BLOCK_UXN
	224	}, {
	225	/* List terminator */
	226	0,
	227	}
	228	};
	229
	230	struct mm_region *mem_map = bcm2837_mem_map;
	231	#endif
	232
0d04f34a SW	233	int dram_init(void)
0d04f34a SW	234	{
927753ae	235	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1);
3f397782 SW	236	int ret;
	237
	238	BCM2835_MBOX_INIT_HDR(msg);
	239	BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
	240
	241	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	242	if (ret) {
	243	printf("bcm2835: Could not query ARM memory size\n");
	244	return -1;
	245	}
	246
	247	gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
0d04f34a SW	248
	249	return 0;
	250	}
	251
6fe7845a SW	252	static void set_fdtfile(void)
	253	{
	254	const char *fdtfile;
	255
00caae6d	256	if (env_get("fdtfile"))
6fe7845a SW	257	return;
6fe7845a SW	258
c4ea1edb	259	fdtfile = model->fdtfile;
382bee57	260	env_set("fdtfile", fdtfile);
6fe7845a SW	261	}
6fe7845a SW	262
ade243a2 CS	263	/*
	264	* If the firmware provided a valid FDT at boot time, let's expose it in
	265	* ${fdt_addr} so it may be passed unmodified to the kernel.
	266	*/
	267	static void set_fdt_addr(void)
	268	{
00caae6d	269	if (env_get("fdt_addr"))
ade243a2 CS	270	return;
	271
	272	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
	273	return;
	274
018f5303	275	env_set_hex("fdt_addr", fw_dtb_pointer);
ade243a2 CS	276	}
	277
	278	/*
	279	* Prevent relocation from stomping on a firmware provided FDT blob.
	280	*/
	281	unsigned long board_get_usable_ram_top(unsigned long total_size)
	282	{
	283	if ((gd->ram_top - fw_dtb_pointer) > SZ_64M)
	284	return gd->ram_top;
	285	return fw_dtb_pointer & ~0xffff;
	286	}
	287
6fe7845a	288	static void set_usbethaddr(void)
4f80a06d	289	{
927753ae	290	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1);
4f80a06d SW	291	int ret;
4f80a06d SW	292
c4ea1edb	293	if (!model->has_onboard_eth)
3207d8fc SW	294	return;
3207d8fc SW	295
00caae6d	296	if (env_get("usbethaddr"))
6fe7845a	297	return;
4f80a06d SW	298
	299	BCM2835_MBOX_INIT_HDR(msg);
	300	BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
	301
	302	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	303	if (ret) {
	304	printf("bcm2835: Could not query MAC address\n");
	305	/* Ignore error; not critical */
6fe7845a	306	return;
4f80a06d SW	307	}
4f80a06d SW	308
fd1e959e	309	eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
4f80a06d	310
00caae6d SG	311	if (!env_get("ethaddr"))
00caae6d SG	312	env_set("ethaddr", env_get("usbethaddr"));
859f1437	313
6fe7845a SW	314	return;
	315	}
	316
bff78567 GG	317	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	318	static void set_board_info(void)
	319	{
c4ea1edb SW	320	char s[11];
	321
	322	snprintf(s, sizeof(s), "0x%X", revision);
382bee57	323	env_set("board_revision", s);
c4ea1edb	324	snprintf(s, sizeof(s), "%d", rev_scheme);
382bee57	325	env_set("board_rev_scheme", s);
c4ea1edb SW	326	/* Can't rename this to board_rev_type since it's an ABI for scripts */
c4ea1edb SW	327	snprintf(s, sizeof(s), "0x%X", rev_type);
382bee57 SG	328	env_set("board_rev", s);
382bee57 SG	329	env_set("board_name", model->name);
bff78567 GG	330	}
	331	#endif /* CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG */
	332
757cd149 LR	333	static void set_serial_number(void)
	334	{
	335	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_serial, msg, 1);
	336	int ret;
	337	char serial_string[17] = { 0 };
	338
00caae6d	339	if (env_get("serial#"))
757cd149 LR	340	return;
	341
	342	BCM2835_MBOX_INIT_HDR(msg);
	343	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg->get_board_serial, GET_BOARD_SERIAL);
	344
	345	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	346	if (ret) {
	347	printf("bcm2835: Could not query board serial\n");
	348	/* Ignore error; not critical */
	349	return;
	350	}
	351
	352	snprintf(serial_string, sizeof(serial_string), "%016" PRIx64,
	353	msg->get_board_serial.body.resp.serial);
382bee57	354	env_set("serial#", serial_string);
757cd149 LR	355	}
757cd149 LR	356
6fe7845a SW	357	int misc_init_r(void)
6fe7845a SW	358	{
ade243a2	359	set_fdt_addr();
6fe7845a SW	360	set_fdtfile();
6fe7845a SW	361	set_usbethaddr();
bff78567 GG	362	#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	363	set_board_info();
	364	#endif
757cd149 LR	365	set_serial_number();
757cd149 LR	366
4f80a06d SW	367	return 0;
	368	}
	369
6fe7845a SW	370	static void get_board_rev(void)
6fe7845a SW	371	{
927753ae	372	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1);
6fe7845a	373	int ret;
c4ea1edb SW	374	const struct rpi_model *models;
c4ea1edb SW	375	uint32_t models_count;
6fe7845a SW	376
	377	BCM2835_MBOX_INIT_HDR(msg);
	378	BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
	379
	380	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
	381	if (ret) {
	382	printf("bcm2835: Could not query board revision\n");
	383	/* Ignore error; not critical */
	384	return;
	385	}
	386
46414296 SW	387	/*
	388	* For details of old-vs-new scheme, see:
	389	* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
	390	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
	391	* (a few posts down)
95b4f112 SW	392	*
	393	* For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
	394	* lower byte to use as the board rev:
	395	* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
	396	* http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
46414296	397	*/
c4ea1edb SW	398	revision = msg->get_board_rev.body.resp.rev;
	399	if (revision & 0x800000) {
	400	rev_scheme = 1;
	401	rev_type = (revision >> 4) & 0xff;
	402	models = rpi_models_new_scheme;
	403	models_count = ARRAY_SIZE(rpi_models_new_scheme);
	404	} else {
	405	rev_scheme = 0;
	406	rev_type = revision & 0xff;
	407	models = rpi_models_old_scheme;
	408	models_count = ARRAY_SIZE(rpi_models_old_scheme);
47705eff	409	}
c4ea1edb SW	410	if (rev_type >= models_count) {
	411	printf("RPI: Board rev 0x%x outside known range\n", rev_type);
	412	model = &rpi_model_unknown;
	413	} else if (!models[rev_type].name) {
	414	printf("RPI: Board rev 0x%x unknown\n", rev_type);
	415	model = &rpi_model_unknown;
	416	} else {
	417	model = &models[rev_type];
47705eff	418	}
914627fe	419
c4ea1edb	420	printf("RPI %s (0x%x)\n", model->name, revision);
6fe7845a SW	421	}
6fe7845a SW	422
d8396a32	423	int board_init(void)
601147b0	424	{
45a6d231 PP	425	#ifdef CONFIG_HW_WATCHDOG
	426	hw_watchdog_init();
	427	#endif
601147b0	428
d8396a32 FV	429	get_board_rev();
	430
	431	gd->bd->bi_boot_params = 0x100;
	432
70997d88	433	return bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
601147b0 AG	434	}
601147b0 AG	435
82f766d1 AD	436	/*
	437	* If the firmware passed a device tree use it for U-Boot.
	438	*/
	439	void *board_fdt_blob_setup(void)
	440	{
	441	if (fdt_magic(fw_dtb_pointer) != FDT_MAGIC)
	442	return NULL;
	443	return (void *)fw_dtb_pointer;
	444	}
	445
e895a4b0	446	int ft_board_setup(void blob, bd_t bd)
ea697ae7 SW	447	{
	448	/*
	449	* For now, we simply always add the simplefb DT node. Later, we
	450	* should be more intelligent, and e.g. only do this if no enabled DT
	451	* node exists for the "real" graphics driver.
	452	*/
	453	lcd_dt_simplefb_add_node(blob);
e895a4b0	454
1bcf7a30 AG	455	#ifdef CONFIG_EFI_LOADER
	456	/* Reserve the spin table */
	457	efi_add_memory_map(0, 1, EFI_RESERVED_MEMORY_TYPE, 0);
	458	#endif
	459
e895a4b0	460	return 0;
ea697ae7	461	}