arch/arm/boards/optimus/optimus.c

/*
 * Copyright (C) 2011 Mindspeed Technologies Pvt Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

/**
 * @file
 * @brief Comcerto 2000 Specific Board Initialization routines
 *
 */


#include <common.h>
#include <init.h>
#include <driver.h>
#include <partition.h>
#include <fs.h>
#include <asm/io.h>
#include <asm/types.h>
#include <asm/hardware.h>
#include <mach/comcerto-2000.h>
#include <mach/exp-bus.h>
#include <generated/mach-types.h>
#include <sizes.h>
#include <c2000_eth_pdata.h>
#include <config.h>
#include <spi/spi.h>
#include <mach/comcerto_spi.h>
#include <mach/gpio.h>
#include <miidev.h>
#include <asm/armlinux.h>
#include <fast_uart.h>
#include <i2c/i2c.h>
#include <mach/i2c.h>
#include <mach/otp.h>
#include <mach/ddr.h>
#include <c2k_otp.h>
#include <secure_boot.h>
#include <board_id.h>
#include <tpm_lite/tlcl.h>
#include <environment.h>
#include <recovery.h>
#include "leds.h"

#define PHY_DEVICE      "phy0"

#define SPACECAST_EMAC1_PHY_ADDR	1

#define SPACECAST_TPM_I2C_ADDR		0x20

static bool recovery_mode = false;

#ifdef CONFIG_SPI
//Legacy spi

static int c2k_spi_cs[4] = {0};

static struct c2k_spi_master c2k_spi_1_data = {
        .chipselect = c2k_spi_cs,
        .num_chipselect = ARRAY_SIZE(c2k_spi_cs),
};

static struct spi_board_info c2k_spi_dev_1[] = {
        {
                .name = "S25FL064A", /* device name */
                .max_speed_hz = 4000000, /* max freq this device can work with */
                .bus_num = 0, /* which driver to attach this device to */
                .chip_select = 0, /* which chip select this device is connected to */
                .mode = SPI_CPOL | SPI_CPHA, /* operating modes */
        },
        {
                .name = "comcerto_spi1", /* device name */
                .max_speed_hz = 4000000, /* max freq this device can work with */
                .bus_num = 0, /* which driver to attach this device to */
                .chip_select = 1, /* which chip select this device is connected to */
                .mode = SPI_CPOL | SPI_CPHA, /* operating modes */
        },
        {
                .name = "comcerto_spi2", /* device name */
                .max_speed_hz = 4000000, /* max freq this device can work with */
                .bus_num = 0, /* which driver to attach this device to */
                .chip_select = 2, /* which chip select this device is connected to */
                .mode = SPI_CPOL | SPI_CPHA, /* operating modes */
        },
        {
                .name = "legerity", /* device name */
                .max_speed_hz = 4000000, /* max freq this device can work with */
                .bus_num = 0, /* which driver to attach this device to */
                .chip_select = 3, /* which chip select this device is connected to */
                .mode = SPI_CPOL | SPI_CPHA, /* operating modes */
        },
};

static struct device_d device_spi = {
        .id = -1,
        .name = "c2k_spi",
        .map_base = SPI_BASEADDR,
        .platform_data = &c2k_spi_1_data,
};
#endif


#if defined(CONFIG_NET_COMCERTO_2000)
struct c2000_eth_platform_data eth0_pdata = {
	.gemac_port = 0,
	.mac_addr = 0,
	.phy_addr = EMAC0_PHY_ADDR,
};

struct device_d c2000_eth0 = {
	.id = 0,
	.name = "c2000_eth",
	.map_base = COMCERTO_AXI_HFE_CFG_BASE,
	/* .size  = 16M, */
	.platform_data = &eth0_pdata,
};

struct c2000_eth_platform_data eth1_pdata = {
	.gemac_port = 1,
	.mac_addr = 0,
	.phy_addr = EMAC1_PHY_ADDR,
};

struct device_d c2000_eth1 = {
	.id = 1,
	.name = "c2000_eth",
	.map_base = COMCERTO_AXI_HFE_CFG_BASE,
	/* .size  = 16M, */
	.platform_data = &eth1_pdata,
};

struct c2000_eth_platform_data eth2_pdata = {
	.gemac_port = 2,
	.mac_addr = 0,
	.phy_addr = 0,
};

struct device_d c2000_eth2 = {
	.id = 2,
	.name = "c2000_eth",
	.map_base = COMCERTO_AXI_HFE_CFG_BASE,
	/* .size  = 16M, */
	.platform_data = &eth2_pdata,
};
#endif

static struct memory_platform_data sdram_pdata = {
	.name = "ram0",
	.flags = DEVFS_RDWR,
};

static struct device_d sdram_dev = {
	.id = -1,
	.name = "mem",
	.map_base = 0x00000000,
	.size = 0, /* Will be set in c2000_device_init() depending on h/w
		      strapping. */
	.platform_data = &sdram_pdata,
};

static struct fast_uart_plat serial_plat = {
	.clock = 200000000,      /* 200MHz  */
};

static struct device_d fast_uart_device = {
	.id       = -1,
	.name     = "fast_uart",
	.map_base = UART_BASEADDR,
	.platform_data = (void *)&serial_plat,
};

#ifdef CONFIG_I2C_C2K
struct i2c_platform_data pdata = {
	.bitrate = 0x40000
};

struct device_d c2k_i2c_dev = {
	.id       = -1,
	.name     = "c2k_i2c",
	.map_base = COMCERTO_I2C_BASE,
	.platform_data = &pdata,
};

static struct i2c_board_info i2c_devices_optimus[] = {
	{
		I2C_BOARD_INFO("eeprom", CFG_I2C_EEPROM0_ADDR),
	},
};

static struct i2c_board_info i2c_devices_spacecast[] = {
	{
		I2C_BOARD_INFO("tpm_i2c_infineon", SPACECAST_TPM_I2C_ADDR),
	},
};
#endif

#ifdef CONFIG_OTP
struct device_d c2k_otp_dev = {
	.name     = "c2k_otp",
	.map_base = COMCERTO_OTP_BASE,
	.size     = OTP_SIZE,
};
#endif

struct device_d c2k_nor_dev = {
	.id	  = -1,
	.name     = "cfi_flash",
	.map_base = COMCERTO_AXI_EXP_BASE,
	.size     = 0, /* auto-detected by cfi_flash driver */
};

struct device_d csi_flash_dev = {
	.id	  = -1,
	.name     = "csi_flash",
	.size     = SPI_FLASH_SIZE,
};

/* This variable is for debugging purposes. A developer can get its address
 * with "grep optimus_board_id System.map" and then examine it later with "md
 * 0x<address>" from barebox. */
int optimus_board_id = 0x9999999;

int get_board_id_gpio(void) {
	int board_id;
	/* We determine the type of board by reading GPIO pins 57, 56 and 55
	 * The bit patterns are defined as follows:
	 * Optimus=000
	 * Sideswipe=001
	 * SpaceCast=010
	*/

	/* We usually set up GPIO pins in c2000_device_init(), but the latter
	 * runs only after this function. */

	/* GPIO[55-57] and CORESIGHT_D[11-13] are muxed on the same pins. Set
	 * pin Select Register to select GPIO[55-57].  Pin Output Register is 0
	 * by default. */
	writel(readl(COMCERTO_GPIO_63_32_PIN_SELECT_REG) | 7<<(55-32), COMCERTO_GPIO_63_32_PIN_SELECT_REG);

	/* Set GPIO[55-57] to input */
	writel(readl(COMCERTO_GPIO_63_32_OE_REG) | 7<<(55-32), COMCERTO_GPIO_63_32_OE_REG);

	/* Read 3 bit board id */
	board_id = (readl(COMCERTO_GPIO_63_32_INPUT_REG) >> (55-32)) & 7;

	optimus_board_id = board_id | 0xabcd0000;

	return board_id;
}
EXPORT_SYMBOL(get_board_id_gpio)

int get_board_id(void) {
	secure_boot_mode_t boot_mode = get_secure_boot_mode();
	/* If the boot mode can't be determined assume it's a secure boot */
	bool secure_boot = ((boot_mode == SECURE) || (boot_mode == UNKNOWN));

	if (secure_boot) {
		uint32_t board_id_otp = 0xFFFFFFFF;
		if (otp_read(OTP_OFFSET_BOARD_ID, (uint8_t *)&board_id_otp,
			sizeof(board_id_otp))) {
			printf("Unable to read board ID from the OTP\n");
			hang();
		}

		if (board_id_otp != 0) {
			switch (board_id_otp) {
			case OPTIMUS_BOARD_ID_OTP:
				return OPTIMUS_BOARD_ID;

			case SIDESWIPE_BOARD_ID_OTP:
				return SIDESWIPE_BOARD_ID;

			case SPACECAST_BOARD_ID_OTP:
				return SPACECAST_BOARD_ID;

			default:
				printf("Invalid board ID (OTP): 0x%08x\n", board_id_otp);
			}
		} else {
			/* The board ID in the OTP is unprogrammed. This can be
			   the case on Optimus and Sideswipe devices which were
			   deployed before the OTP board ID was introduced. Fall
			   back to the GPIO pins but restrict boot to Optimus
			   and Sideswipe */
			int board_id = get_board_id_gpio();
			if ((board_id == OPTIMUS_BOARD_ID) ||
				(board_id == SIDESWIPE_BOARD_ID)) {
				return board_id;
			}

			printf("Invalid board ID (GPIO): %d\n", board_id);
		}

		hang();
		return -1;
	} else  {
		return get_board_id_gpio();
	}
}
EXPORT_SYMBOL(get_board_id)

#ifdef	CONFIG_TPM
uint32_t tpm_init(void);
#endif

static void gpio_toggle(unsigned int gpiomask) {
	if (comcerto_gpio_read(gpiomask)) {
		comcerto_gpio_set_0(gpiomask);
	} else {
		comcerto_gpio_set_1(gpiomask);
	}
}

static int is_factory_reset_pressed(void) {
	return !comcerto_gpio_read(GPIO_6);
}

static int is_factory_reset_pressed_continuously(int period_ms) {
	int i;

	for (i = 0; i < period_ms / 10; i++) {
		if (!is_factory_reset_pressed()) {
			return 0;
		}

		// Blink red LED slowly
		if (i % 50 == 0) {
			gpio_toggle(GPIO_RED_LED);
		}

		mdelay(10);
	}

	// Increase blinking frequency of the LED to indicate that the button can be
	// released
	for (i = 0; is_factory_reset_pressed(); i++) {
		if (i % 20 == 0) {
			gpio_toggle(GPIO_RED_LED);
		}

		mdelay(10);
	}

	return 1;
}

int is_recovery_mode(void) {
	return recovery_mode;
}

static int c2000_device_init(void)
{
#ifdef	CONFIG_COMCERTO_BOOTLOADER
	u32 bootopt;
#endif
	int clk = HAL_get_axi_clk(); // Get AXI bus freq in MHz
	serial_plat.clock = clk * 1000 * 1000;
	register_device(&fast_uart_device);

#ifdef CONFIG_I2C_C2K
	if (get_board_id() == SPACECAST_BOARD_ID) {
		i2c_register_board_info(0, i2c_devices_spacecast,
					ARRAY_SIZE(i2c_devices_spacecast));
	} else {
		i2c_register_board_info(0, i2c_devices_optimus,
					ARRAY_SIZE(i2c_devices_optimus));
	}
	register_device(&c2k_i2c_dev);
#endif

#ifdef CONFIG_SPI
	spi_register_board_info(c2k_spi_dev_1, ARRAY_SIZE(c2k_spi_dev_1));
	register_device(&device_spi);
#endif

#ifdef CONFIG_OTP
	register_device(&c2k_otp_dev);
#endif

#if defined(CONFIG_NET_COMCERTO_2000)
	if (get_board_id() == SPACECAST_BOARD_ID) {
		/* In SpaceCast GEMAC1 is connected to PHY address 0 */
		struct c2000_eth_platform_data *pdata =
						c2000_eth1.platform_data;
		pdata->phy_addr = SPACECAST_EMAC1_PHY_ADDR;
	}
	register_device(&c2000_eth0);
	register_device(&c2000_eth1);
	register_device(&c2000_eth2);
#endif
	register_device(&c2k_nor_dev);
	register_device(&csi_flash_dev);

	//Exp bus soft reset
	writel (0x1, EXP_SWRST_REG);
	while(readl(EXP_SWRST_REG) & 0x1);

	//16-bit NOR bus is used on C2K EVM board
	writel(((0x1) << 1), EXP_CS0_CFG_REG);

	/* IBR, when booting from NOR, is changing expansion bus CS0 Mem Segment size to 1MiB
	instead of the default reset value of 128MiB. Put back the reset default value */
	writel(EXP_CS0_SEG_END_VAL, EXP_CS0_SEG_REG);

	writel(EXP_CS1_BASE_VAL, EXP_CS1_BASE_REG);
	writel(EXP_CS1_SEG_END_VAL, EXP_CS1_SEG_REG);

	writel(EXP_CS2_BASE_VAL, EXP_CS2_BASE_REG);
	writel(EXP_CS2_SEG_END_VAL, EXP_CS2_SEG_REG);

	writel(EXP_CS3_BASE_VAL, EXP_CS3_BASE_REG);
	writel(EXP_CS3_SEG_END_VAL, EXP_CS3_SEG_REG);

#ifdef CONFIG_COMCERTO_NAND
        writel(EXP_CS4_BASE_VAL, EXP_CS4_BASE_REG);
	writel(EXP_CS4_SEG_END_VAL, EXP_CS4_SEG_REG);
	//MLC NAND on EVM is 8-bit. Enable 8-bit bus
        writel((readl(EXP_CS4_CFG_REG) & (~0x6)), EXP_CS4_CFG_REG);

#endif

	//CS0 EXP bus Timing tune. It reduces the time to flash NOR
	writel(0x03034007, EXP_CS0_TMG1_REG);
	writel(0x04040502, EXP_CS0_TMG2_REG);

	//CS4 EXP bus Timing tune. It reduces the time to flash NAND
	writel(0x01010001, EXP_CS4_TMG1_REG);
	writel(0x01010101, EXP_CS4_TMG2_REG);
	writel(0x00000001, EXP_CS4_TMG3_REG);

	/* External reset to PCIe devices, Atheros Switch and FXS block, GPIO27 is used for TM_EXT_RESET*/
	/*It seems some pcie wifi card has problem with the way external reset was being
	  done (reset line high/delay/low/delay/high sequence) earlier. Instead simple
	  reset pulse works for fine for these card and all the cards and it includes atheros
	  switch*/
	writel(readl(COMCERTO_GPIO_OUTPUT_REG) & ~GPIO_27, COMCERTO_GPIO_OUTPUT_REG);
	writel( readl(COMCERTO_GPIO_OE_REG) | GPIO_27, COMCERTO_GPIO_OE_REG);
	writel(readl(COMCERTO_GPIO_OUTPUT_REG) | GPIO_27, COMCERTO_GPIO_OUTPUT_REG);

#ifdef	CONFIG_COMCERTO_ULOADER
	/*
	 * GPIO 12: system blue LED
	 * GPIO 13: system red LED
	 * GPIO 14: AR8337 reset, active low
	 * GPIO 15: USB power switch enable, active high
	 * GPIO 44: Power Over Ethernet, needs to be set low
	 * GPIO 48: Power enable for high power wifi 11AC 4.2V PA, needs to be
	 *          set high
	 */
	comcerto_gpio_enable_output(GPIO_BLUE_LED|GPIO_RED_LED);
	/* Turn blue LED off, red LED on, to indicate the uloader is running. */
	comcerto_gpio_set_0(GPIO_BLUE_LED);
	comcerto_gpio_set_1(GPIO_RED_LED);

	comcerto_gpio_enable_output(GPIO_14|GPIO_15);
	comcerto_gpio_set_1(GPIO_14|GPIO_15);
	comcerto_gpio_set_0(GPIO_14|GPIO_15);
	/* AR8337 requires 10ms reset pulse. */
	mdelay(10);
	comcerto_gpio_set_1(GPIO_14|GPIO_15);

	/* Misc Pin Select Register[5:4]: TDM interface Muxing
	 * ‘00’ – TDM block is selected (default)
	 * ‘10’ – GPIO[63:60] signals are selected
	 *
	 * For Optimus, we need GPIO[62].
	 */
	writel(readl(COMCERTO_GPIO_MISC_PIN_SELECT_REG) | 2 << 4, COMCERTO_GPIO_MISC_PIN_SELECT_REG);

	/* GPIO[44] and CORESIGHT_D[0] are muxed on the same pin. Set pin
	 * Select Register to select GPIO[44].  Pin Output Register is 0 by
	 * default. */
	writel(readl(COMCERTO_GPIO_63_32_PIN_SELECT_REG) | 1<<(44-32), COMCERTO_GPIO_63_32_PIN_SELECT_REG);
	/* GPIO[48] and CORESIGHT_D[4] are muxed on the same pin. Set pin
	 * Select Register to select GPIO[48]. */
	writel(readl(COMCERTO_GPIO_63_32_PIN_SELECT_REG) | 1<<(48-32), COMCERTO_GPIO_63_32_PIN_SELECT_REG);
	/* Set GPIO[48] to high */
	writel(readl(COMCERTO_GPIO_63_32_OUTPUT_REG) | 1<<(48-32), COMCERTO_GPIO_63_32_OUTPUT_REG);
#endif
#ifdef	CONFIG_COMCERTO_BOOTLOADER
	/* Turn blue LED off, red LED on, to indicate the bootloader is running. */
	comcerto_gpio_set_0(GPIO_BLUE_LED);
	comcerto_gpio_set_1(GPIO_RED_LED);
#endif

	sdram_dev.size = get_ddr_config_size();
	if (!sdram_dev.size) {
		printf("Bad DDRC configuration\n");
		hang();
	}
	//For 16bit ddr, reduce the size to half 
	if (is_16bitDDR_config())
		sdram_dev.size >>= 1;
	printf("Memory size: %s\n", size_human_readable(sdram_dev.size));

#ifdef	CONFIG_COMCERTO_BOOTLOADER
	armlinux_add_dram(&sdram_dev);
	armlinux_set_bootparams((void *)0x100);
	armlinux_set_architecture(MACH_TYPE_COMCERTO);

	bootopt = ((readl(COMCERTO_GPIO_SYSTEM_CONFIG) >>  BOOTSTRAP_BOOT_OPT_SHIFT) & BOOTSTRAP_BOOT_OPT_MASK);
	if(!bootopt){
		/* ENV for SPI */
		printf("Using ENV from SPI Flash.\n");
		devfs_add_partition("spi0", 0x120000, 0x20000, PARTITION_FIXED, "env0");
		protect_file("/dev/env0", 1);
	}else{
		/* ENV for NOR */
		printf("Using ENV from NOR Flash.\n");
		devfs_add_partition("nor0", 0x120000, 0x20000, PARTITION_FIXED, "env0");
		protect_file("/dev/env0", 1);
	}

#ifdef  CONFIG_DEVELOPER_BAREBOX
	setenv("dev_mode", "1");
#else
	setenv("dev_mode", "0");
#endif
	export("dev_mode");

	if (get_board_id() == SPACECAST_BOARD_ID) {
		if (is_factory_reset_pressed()) {
			printf("Factory reset button is pressed, checking for recovery mode ...\n");
			recovery_mode = is_factory_reset_pressed_continuously(5000);
			printf("Recovery mode is%s active\n", (recovery_mode? "" : " not"));

			if (!recovery_mode) {
				comcerto_gpio_set_1(GPIO_RED_LED);
			} else {
				comcerto_gpio_set_0(GPIO_RED_LED);
			}
		}

		if (recovery_mode) {
			setenv("recovery_mode", "1");
		} else {
			setenv("recovery_mode", "0");
		}
		export("recovery_mode");
	}

#ifdef	CONFIG_TPM
	if (tpm_init() != TPM_SUCCESS) {
		printf("TPM initialization failed\n");
		if (recovery_mode) {
			printf("Can't continue boot to recovery mode\nPower cycle needed\n");
			while (1) {
				mdelay(100);
			}
		}
	}
#endif
#endif
	return 0;
}

int c2000_eth_board_init(int gemac_port)
{
        struct mii_device *mdev;
        struct cdev *cdev;

        cdev = cdev_by_name(PHY_DEVICE);
	if(!cdev)
	{
		printf("No MII Device registered !!\n");
		return -1;
	}

        mdev = cdev->priv;

        //eth0 port is chosen as criteria for bringingup out of reset because
        //all MDIO access can happen through EMAC0 and without bringing eth0 first
        //no Switch/PHY configuration can happen and no point in removing reset without eth0
	if (get_board_id() != SPACECAST_BOARD_ID) {
		if(gemac_port == 0)
		{
				//AR8327 Switch init
				athrs17_init(mdev);

				//AR8327 WAN PHY4 init
				athrs17_phy_setup(mdev,EMAC0_PHY_ADDR);
		}
		else
		{
			//AR8327 LAN PHYs init
			athrs17_phy_setup(mdev,EMAC1_PHY_ADDR);
		}
	}
	return 0;
}

device_initcall(c2000_device_init);