barebox/arch/arm/boards/freescale-mx53-loco/board.c

/*
 * Copyright (C) 2007 Sascha Hauer, Pengutronix
 * Copyright (C) 2011 Marc Kleine-Budde <mkl@pengutronix.de>
 *
 * 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.
 *
 */

#include <common.h>
#include <environment.h>
#include <fcntl.h>
#include <fec.h>
#include <fs.h>
#include <init.h>
#include <nand.h>
#include <net.h>
#include <partition.h>
#include <sizes.h>

#include <generated/mach-types.h>

#include <mach/imx53-regs.h>
#include <mach/iomux-mx53.h>
#include <mach/devices-imx53.h>
#include <mach/generic.h>
#include <mach/gpio.h>
#include <mach/imx-nand.h>
#include <mach/iim.h>
#include <mach/imx5.h>
#include <mach/revision.h>
#include <mach/bbu.h>
#include <mach/imx-flash-header.h>

#include <i2c/i2c.h>
#include <mfd/mc34708.h>

#include <asm/armlinux.h>
#include <io.h>
#include <asm/mmu.h>

static struct fec_platform_data fec_info = {
	.xcv_type = PHY_INTERFACE_MODE_RMII,
};

static iomux_v3_cfg_t loco_pads[] = {
	/* UART1 */
	MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
	MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,

	/* FEC */
	MX53_PAD_FEC_MDC__FEC_MDC,
	MX53_PAD_FEC_MDIO__FEC_MDIO,
	MX53_PAD_FEC_REF_CLK__FEC_TX_CLK,
	MX53_PAD_FEC_RX_ER__FEC_RX_ER,
	MX53_PAD_FEC_CRS_DV__FEC_RX_DV,
	MX53_PAD_FEC_RXD1__FEC_RDATA_1,
	MX53_PAD_FEC_RXD0__FEC_RDATA_0,
	MX53_PAD_FEC_TX_EN__FEC_TX_EN,
	MX53_PAD_FEC_TXD1__FEC_TDATA_1,
	MX53_PAD_FEC_TXD0__FEC_TDATA_0,
	/* FEC_nRST */
	MX53_PAD_PATA_DA_0__GPIO7_6,

	/* SD1 */
	MX53_PAD_SD1_CMD__ESDHC1_CMD,
	MX53_PAD_SD1_CLK__ESDHC1_CLK,
	MX53_PAD_SD1_DATA0__ESDHC1_DAT0,
	MX53_PAD_SD1_DATA1__ESDHC1_DAT1,
	MX53_PAD_SD1_DATA2__ESDHC1_DAT2,
	MX53_PAD_SD1_DATA3__ESDHC1_DAT3,
	/* SD1_CD */
	MX53_PAD_EIM_DA13__GPIO3_13,

	/* SD3 */
	MX53_PAD_PATA_DATA8__ESDHC3_DAT0,
	MX53_PAD_PATA_DATA9__ESDHC3_DAT1,
	MX53_PAD_PATA_DATA10__ESDHC3_DAT2,
	MX53_PAD_PATA_DATA11__ESDHC3_DAT3,
	MX53_PAD_PATA_DATA0__ESDHC3_DAT4,
	MX53_PAD_PATA_DATA1__ESDHC3_DAT5,
	MX53_PAD_PATA_DATA2__ESDHC3_DAT6,
	MX53_PAD_PATA_DATA3__ESDHC3_DAT7,
	MX53_PAD_PATA_IORDY__ESDHC3_CLK,
	MX53_PAD_PATA_RESET_B__ESDHC3_CMD,
	/* SD3_CD */
	MX53_PAD_EIM_DA11__GPIO3_11,
	/* SD3_WP */
	MX53_PAD_EIM_DA12__GPIO3_12,

	/* I2C0 */
	MX53_PAD_CSI0_DAT8__I2C1_SDA,
	MX53_PAD_CSI0_DAT9__I2C1_SCL,

	MX53_PAD_PATA_DA_2__GPIO7_8,
};

static struct i2c_board_info i2c_devices[] = {
	{
		I2C_BOARD_INFO("mc34708-i2c", 0x08),
	},
};

/*
 * Revision to be passed to kernel. The kernel provided
 * by freescale relies on this.
 *
 * C --> CPU type
 * S --> Silicon revision
 * B --> Board rev
 *
 * 31    20     16     12    8      4     0
 *        | Cmaj | Cmin | B  | Smaj | Smin|
 *
 * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2
*/
static unsigned int loco_system_rev = 0x00053000;

static void set_silicon_rev( int rev)
{
	loco_system_rev = loco_system_rev | (rev & 0xFF);
}

static void set_board_rev(int rev)
{
	loco_system_rev =  (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8;
}

#define LOCO_FEC_PHY_RST		IMX_GPIO_NR(7, 6)

static void loco_fec_reset(void)
{
	gpio_direction_output(LOCO_FEC_PHY_RST, 0);
	mdelay(1);
	gpio_set_value(LOCO_FEC_PHY_RST, 1);
}

#define LOCO_SD3_CD			IMX_GPIO_NR(3, 11)
#define LOCO_SD3_WP			IMX_GPIO_NR(3, 12)
#define LOCO_SD1_CD			IMX_GPIO_NR(3, 13)
#define MX53_LOCO_USB_PWREN		IMX_GPIO_NR(7, 8)

static struct esdhc_platform_data loco_sd1_data = {
	.cd_gpio = LOCO_SD1_CD,
	.cd_type = ESDHC_CD_GPIO,
	.wp_type = ESDHC_WP_NONE,
};

static struct esdhc_platform_data loco_sd3_data = {
	.cd_gpio = LOCO_SD3_CD,
	.wp_gpio = LOCO_SD3_WP,
	.cd_type = ESDHC_CD_GPIO,
	.wp_type = ESDHC_WP_GPIO,
};

static void loco_ehci_init(void)
{
	/* USB PWR enable */
	gpio_direction_output(MX53_LOCO_USB_PWREN, 0);
	gpio_set_value(MX53_LOCO_USB_PWREN, 1);

	writel(0, MX53_OTG_BASE_ADDR + 0x384); /* setup portsc */
	add_generic_usb_ehci_device(1, MX53_OTG_BASE_ADDR + 0x200, NULL);
}

#define DCD_NAME static struct imx_dcd_v2_entry dcd_entry

#include "dcd-data.h"

static int loco_devices_init(void)
{

	imx53_iim_register_fec_ethaddr();
	loco_fec_reset();
	imx53_add_fec(&fec_info);
	imx53_add_mmc0(&loco_sd1_data);
	imx53_add_mmc2(&loco_sd3_data);
	i2c_register_board_info(0, i2c_devices, ARRAY_SIZE(i2c_devices));
	imx53_add_i2c0(NULL);

	if (IS_ENABLED(CONFIG_USB_EHCI))
		loco_ehci_init();

	set_silicon_rev(imx_silicon_revision());

	armlinux_set_bootparams((void *)0x70000100);
	armlinux_set_architecture(MACH_TYPE_MX53_LOCO);

	imx53_bbu_internal_mmc_register_handler("mmc", "/dev/disk0",
		BBU_HANDLER_FLAG_DEFAULT, dcd_entry, sizeof(dcd_entry), 0);

	return 0;
}

device_initcall(loco_devices_init);

static int loco_part_init(void)
{
	devfs_add_partition("disk0", 0x00000, 0x40000, DEVFS_PARTITION_FIXED, "self0");
	devfs_add_partition("disk0", 0x40000, 0x20000, DEVFS_PARTITION_FIXED, "env0");

	return 0;
}
late_initcall(loco_part_init);

static int loco_console_init(void)
{
	mxc_iomux_v3_setup_multiple_pads(loco_pads, ARRAY_SIZE(loco_pads));

	imx53_init_lowlevel(1000);

	imx53_add_uart0();
	return 0;
}

console_initcall(loco_console_init);

static int loco_pmic_init(void)
{
	struct mc34708 *mc34708;
	int rev;

	mc34708 = mc34708_get();
	if (!mc34708) {
		/* so we have a DA9053 based board */
		printf("MCIMX53-START board 1.0\n");
		armlinux_set_revision(loco_system_rev);
		return 0;
	}

	/* get the board revision from fuse */
	rev = readl(MX53_IIM_BASE_ADDR + 0x878);
	set_board_rev(rev);
	printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' );
	armlinux_set_revision(loco_system_rev);

	return 0;
}

late_initcall(loco_pmic_init);