board/raspberrypi/rpi/rpi.c - github/trini/u-boot - Gitiles

 /*
  * (C) Copyright 2012-2013 Stephen Warren
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */

 #include <common.h>
 #include <config.h>
 #include <dm.h>
 #include <fdt_support.h>
 #include <lcd.h>
 #include <mmc.h>
 #include <asm/gpio.h>
 #include <asm/arch/mbox.h>
 #include <asm/arch/sdhci.h>
 #include <asm/global_data.h>
 #include <dm/platform_data/serial_pl01x.h>

 DECLARE_GLOBAL_DATA_PTR;

 static const struct bcm2835_gpio_platdata gpio_platdata = {
 	.base = BCM2835_GPIO_BASE,
 };

 U_BOOT_DEVICE(bcm2835_gpios) = {
 	.name = "gpio_bcm2835",
 	.platdata = &gpio_platdata,
 };

 static const struct pl01x_serial_platdata serial_platdata = {
 	.base = 0x20201000,
 	.type = TYPE_PL011,
 	.clock = 3000000,
 };

 U_BOOT_DEVICE(bcm2835_serials) = {
 	.name = "serial_pl01x",
 	.platdata = &serial_platdata,
 };

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

 struct msg_set_power_state {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_set_power_state set_power_state;
 	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;
 };

 /* See comments in mbox.h for data source */
 static const struct {
 	const char *name;
 	const char *fdtfile;
 	bool has_onboard_eth;
 } models[] = {
 	[0] = {
 		"Unknown model",
 		"bcm2835-rpi-other.dtb",
 		false,
 	},
 	[BCM2835_BOARD_REV_B_I2C0_2] = {
 		"Model B (no P5)",
 		"bcm2835-rpi-b-i2c0.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_I2C0_3] = {
 		"Model B (no P5)",
 		"bcm2835-rpi-b-i2c0.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_I2C1_4] = {
 		"Model B",
 		"bcm2835-rpi-b.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_I2C1_5] = {
 		"Model B",
 		"bcm2835-rpi-b.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_I2C1_6] = {
 		"Model B",
 		"bcm2835-rpi-b.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_A_7] = {
 		"Model A",
 		"bcm2835-rpi-a.dtb",
 		false,
 	},
 	[BCM2835_BOARD_REV_A_8] = {
 		"Model A",
 		"bcm2835-rpi-a.dtb",
 		false,
 	},
 	[BCM2835_BOARD_REV_A_9] = {
 		"Model A",
 		"bcm2835-rpi-a.dtb",
 		false,
 	},
 	[BCM2835_BOARD_REV_B_REV2_d] = {
 		"Model B rev2",
 		"bcm2835-rpi-b-rev2.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_REV2_e] = {
 		"Model B rev2",
 		"bcm2835-rpi-b-rev2.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_REV2_f] = {
 		"Model B rev2",
 		"bcm2835-rpi-b-rev2.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_B_PLUS] = {
 		"Model B+",
 		"bcm2835-rpi-b-plus.dtb",
 		true,
 	},
 	[BCM2835_BOARD_REV_CM] = {
 		"Compute Module",
 		"bcm2835-rpi-cm.dtb",
 		false,
 	},
 	[BCM2835_BOARD_REV_A_PLUS] = {
 		"Model A+",
 		"bcm2835-rpi-a-plus.dtb",
 		false,
 	},
 };

 u32 rpi_board_rev = 0;

 int dram_init(void)
 {
 	ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
 	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 = models[rpi_board_rev].fdtfile;
 	setenv("fdtfile", fdtfile);
 }

 static void set_usbethaddr(void)
 {
 	ALLOC_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1, 16);
 	int ret;

 	if (!models[rpi_board_rev].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);

 	return;
 }

 int misc_init_r(void)
 {
 	set_fdtfile();
 	set_usbethaddr();
 	return 0;
 }

 static int power_on_module(u32 module)
 {
 	ALLOC_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1, 16);
 	int ret;

 	BCM2835_MBOX_INIT_HDR(msg_pwr);
 	BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
 			      SET_POWER_STATE);
 	msg_pwr->set_power_state.body.req.device_id = module;
 	msg_pwr->set_power_state.body.req.state =
 		BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
 		BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
 				     &msg_pwr->hdr);
 	if (ret) {
 		printf("bcm2835: Could not set module %u power state\n",
 		       module);
 		return -1;
 	}

 	return 0;
 }

 static void get_board_rev(void)
 {
 	ALLOC_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1, 16);
 	int ret;
 	const char *name;

 	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;
 	}

 	rpi_board_rev = msg->get_board_rev.body.resp.rev;
 	if (rpi_board_rev >= ARRAY_SIZE(models)) {
 		printf("RPI: Board rev %u outside known range\n",
 		       rpi_board_rev);
 		rpi_board_rev = 0;
 	}
 	if (!models[rpi_board_rev].name) {
 		printf("RPI: Board rev %u unknown\n", rpi_board_rev);
 		rpi_board_rev = 0;
 	}

 	name = models[rpi_board_rev].name;
 	printf("RPI model: %s\n", name);
 }

 int board_init(void)
 {
 	get_board_rev();

 	gd->bd->bi_boot_params = 0x100;

 	return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
 }

 int board_mmc_init(bd_t *bis)
 {
 	ALLOC_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
 	int ret;

 	power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);

 	BCM2835_MBOX_INIT_HDR(msg_clk);
 	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
 	msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
 	if (ret) {
 		printf("bcm2835: Could not query eMMC clock rate\n");
 		return -1;
 	}

 	return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
 				  msg_clk->get_clock_rate.body.resp.rate_hz);
 }

 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);

 	return 0;
 }
	/*
	* (C) Copyright 2012-2013 Stephen Warren
	*
	* See file CREDITS for list of people who contributed to this
	* project.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*/

	#include <common.h>
	#include <config.h>
	#include <dm.h>
	#include <fdt_support.h>
	#include <lcd.h>
	#include <mmc.h>
	#include <asm/gpio.h>
	#include <asm/arch/mbox.h>
	#include <asm/arch/sdhci.h>
	#include <asm/global_data.h>
	#include <dm/platform_data/serial_pl01x.h>

	DECLARE_GLOBAL_DATA_PTR;

	static const struct bcm2835_gpio_platdata gpio_platdata = {
	.base = BCM2835_GPIO_BASE,
	};

	U_BOOT_DEVICE(bcm2835_gpios) = {
	.name = "gpio_bcm2835",
	.platdata = &gpio_platdata,
	};

	static const struct pl01x_serial_platdata serial_platdata = {
	.base = 0x20201000,
	.type = TYPE_PL011,
	.clock = 3000000,
	};

	U_BOOT_DEVICE(bcm2835_serials) = {
	.name = "serial_pl01x",
	.platdata = &serial_platdata,
	};

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

	struct msg_set_power_state {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_set_power_state set_power_state;
	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;
	};

	/* See comments in mbox.h for data source */
	static const struct {
	const char *name;
	const char *fdtfile;
	bool has_onboard_eth;
	} models[] = {
	[0] = {
	"Unknown model",
	"bcm2835-rpi-other.dtb",
	false,
	},
	[BCM2835_BOARD_REV_B_I2C0_2] = {
	"Model B (no P5)",
	"bcm2835-rpi-b-i2c0.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_I2C0_3] = {
	"Model B (no P5)",
	"bcm2835-rpi-b-i2c0.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_I2C1_4] = {
	"Model B",
	"bcm2835-rpi-b.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_I2C1_5] = {
	"Model B",
	"bcm2835-rpi-b.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_I2C1_6] = {
	"Model B",
	"bcm2835-rpi-b.dtb",
	true,
	},
	[BCM2835_BOARD_REV_A_7] = {
	"Model A",
	"bcm2835-rpi-a.dtb",
	false,
	},
	[BCM2835_BOARD_REV_A_8] = {
	"Model A",
	"bcm2835-rpi-a.dtb",
	false,
	},
	[BCM2835_BOARD_REV_A_9] = {
	"Model A",
	"bcm2835-rpi-a.dtb",
	false,
	},
	[BCM2835_BOARD_REV_B_REV2_d] = {
	"Model B rev2",
	"bcm2835-rpi-b-rev2.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_REV2_e] = {
	"Model B rev2",
	"bcm2835-rpi-b-rev2.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_REV2_f] = {
	"Model B rev2",
	"bcm2835-rpi-b-rev2.dtb",
	true,
	},
	[BCM2835_BOARD_REV_B_PLUS] = {
	"Model B+",
	"bcm2835-rpi-b-plus.dtb",
	true,
	},
	[BCM2835_BOARD_REV_CM] = {
	"Compute Module",
	"bcm2835-rpi-cm.dtb",
	false,
	},
	[BCM2835_BOARD_REV_A_PLUS] = {
	"Model A+",
	"bcm2835-rpi-a-plus.dtb",
	false,
	},
	};

	u32 rpi_board_rev = 0;

	int dram_init(void)
	{
	ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
	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 = models[rpi_board_rev].fdtfile;
	setenv("fdtfile", fdtfile);
	}

	static void set_usbethaddr(void)
	{
	ALLOC_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1, 16);
	int ret;

	if (!models[rpi_board_rev].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);

	return;
	}

	int misc_init_r(void)
	{
	set_fdtfile();
	set_usbethaddr();
	return 0;
	}

	static int power_on_module(u32 module)
	{
	ALLOC_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1, 16);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg_pwr);
	BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
	SET_POWER_STATE);
	msg_pwr->set_power_state.body.req.device_id = module;
	msg_pwr->set_power_state.body.req.state =
	BCM2835_MBOX_SET_POWER_STATE_REQ_ON \|
	BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
	&msg_pwr->hdr);
	if (ret) {
	printf("bcm2835: Could not set module %u power state\n",
	module);
	return -1;
	}

	return 0;
	}

	static void get_board_rev(void)
	{
	ALLOC_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1, 16);
	int ret;
	const char *name;

	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;
	}

	rpi_board_rev = msg->get_board_rev.body.resp.rev;
	if (rpi_board_rev >= ARRAY_SIZE(models)) {
	printf("RPI: Board rev %u outside known range\n",
	rpi_board_rev);
	rpi_board_rev = 0;
	}
	if (!models[rpi_board_rev].name) {
	printf("RPI: Board rev %u unknown\n", rpi_board_rev);
	rpi_board_rev = 0;
	}

	name = models[rpi_board_rev].name;
	printf("RPI model: %s\n", name);
	}

	int board_init(void)
	{
	get_board_rev();

	gd->bd->bi_boot_params = 0x100;

	return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
	}

	int board_mmc_init(bd_t *bis)
	{
	ALLOC_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
	int ret;

	power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);

	BCM2835_MBOX_INIT_HDR(msg_clk);
	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
	msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
	if (ret) {
	printf("bcm2835: Could not query eMMC clock rate\n");
	return -1;
	}

	return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
	msg_clk->get_clock_rate.body.resp.rate_hz);
	}

	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);

	return 0;
	}