147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/*
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* (C) Copyright 2010 Juergen Beisert - Pengutronix
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* (C) Copyright 2011 Wolfram Sang - Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <common.h>
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#include <init.h>
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#include <gpio.h>
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#include <environment.h>
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#include <mci.h>
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#include <linux/err.h>
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#include <asm/armlinux.h>
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#include <generated/mach-types.h>
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#include <mach/imx-regs.h>
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#include <mach/clock.h>
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#include <mach/mci.h>
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#include <usb/fsl_usb2.h>
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#include <mach/usb.h>
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#include <mach/iomux.h>
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static struct mxs_mci_platform_data mci_pdata = {
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.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED,
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.voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */
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.f_min = 400000,
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};
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static const uint32_t pad_setup[] = {
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/* SD card interface */
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SSP1_DATA0 | PULLUP(1),
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SSP1_DATA1 | PULLUP(1),
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SSP1_DATA2 | PULLUP(1),
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SSP1_DATA3 | PULLUP(1),
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SSP1_SCK,
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SSP1_CMD | PULLUP(1),
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SSP1_DETECT | PULLUP(1),
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};
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#ifdef CONFIG_USB_GADGET_DRIVER_ARC
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static struct fsl_usb2_platform_data usb_pdata = {
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.operating_mode = FSL_USB2_DR_DEVICE,
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.phy_mode = FSL_USB2_PHY_UTMI,
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};
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#endif
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static int mx23_evk_mem_init(void)
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{
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arm_add_mem_device("ram0", IMX_MEMORY_BASE, 32 * 1024 * 1024);
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return 0;
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}
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mem_initcall(mx23_evk_mem_init);
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/**
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* Try to register an environment storage on the attached MCI card
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* @return 0 on success
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*
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* We rely on the existence of a usable SD card, already attached to
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* our system, to get something like a persistent memory for our environment.
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* If this SD card is also the boot media, we can use the second partition
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* for our environment purpose (if present!).
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*/
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static int register_persistant_environment(void)
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{
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struct cdev *cdev;
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/*
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* The imx23-olinuxino only has one MCI card socket.
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* So, we expect its name as "disk0".
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*/
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cdev = cdev_by_name("disk0");
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if (cdev == NULL) {
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pr_err("No MCI card preset\n");
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return -ENODEV;
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}
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/* MCI card is present, also a useable partition on it? */
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cdev = cdev_by_name("disk0.1");
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if (cdev == NULL) {
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pr_err("No second partition available\n");
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pr_info("Please create at least a second partition with"
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" 256 kiB...512 kiB in size (your choice)\n");
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return -ENODEV;
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}
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/* use the full partition as our persistent environment storage */
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cdev = devfs_add_partition("disk0.1", 0, cdev->size,
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DEVFS_PARTITION_FIXED, "env0");
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if (IS_ERR(cdev))
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return PTR_ERR(cdev);
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return 0;
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}
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static int mx23_evk_devices_init(void)
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{
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int i, rc;
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/* initizalize gpios */
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for (i = 0; i < ARRAY_SIZE(pad_setup); i++)
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imx_gpio_mode(pad_setup[i]);
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armlinux_set_architecture(MACH_TYPE_MX23EVK);
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add_generic_device("mxs_mci", DEVICE_ID_DYNAMIC, NULL, IMX_SSP1_BASE,
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0x8000, IORESOURCE_MEM, &mci_pdata);
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rc = register_persistant_environment();
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if (rc != 0)
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printf("Cannot create the 'env0' persistant "
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"environment storage (%d)\n", rc);
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#ifdef CONFIG_USB_GADGET_DRIVER_ARC
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imx23_usb_phy_enable();
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add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_USB_BASE, NULL);
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add_generic_device("fsl-udc", DEVICE_ID_DYNAMIC, NULL, IMX_USB_BASE,
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0x200, IORESOURCE_MEM, &usb_pdata);
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#endif
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return 0;
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}
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device_initcall(mx23_evk_devices_init);
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static int mx23_evk_console_init(void)
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{
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barebox_set_model("Freescale i.MX23 EVK");
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barebox_set_hostname("mx23evk");
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add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192,
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IORESOURCE_MEM, NULL);
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return 0;
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}
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console_initcall(mx23_evk_console_init);
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