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/*
* (C) Copyright 2010 Juergen Beisert - Pengutronix
* (C) Copyright 2011 Wolfram Sang - Pengutronix
*
* 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 <init.h>
#include <gpio.h>
#include <environment.h>
#include <mci.h>
#include <linux/err.h>
#include <asm/armlinux.h>
#include <generated/mach-types.h>
#include <mach/imx-regs.h>
#include <mach/clock.h>
#include <mach/mci.h>
#include <usb/fsl_usb2.h>
#include <mach/usb.h>
#include <mach/iomux.h>
static struct mxs_mci_platform_data mci_pdata = {
.caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED,
.voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */
.f_min = 400000,
};
static const uint32_t pad_setup[] = {
/* SD card interface */
SSP1_DATA0 | PULLUP(1),
SSP1_DATA1 | PULLUP(1),
SSP1_DATA2 | PULLUP(1),
SSP1_DATA3 | PULLUP(1),
SSP1_SCK,
SSP1_CMD | PULLUP(1),
SSP1_DETECT | PULLUP(1),
};
#ifdef CONFIG_USB_GADGET_DRIVER_ARC
static struct fsl_usb2_platform_data usb_pdata = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_UTMI,
};
#endif
static int mx23_evk_mem_init(void)
{
arm_add_mem_device("ram0", IMX_MEMORY_BASE, 32 * 1024 * 1024);
return 0;
}
mem_initcall(mx23_evk_mem_init);
/**
* Try to register an environment storage on the attached MCI card
* @return 0 on success
*
* We rely on the existence of a usable SD card, already attached to
* our system, to get something like a persistent memory for our environment.
* If this SD card is also the boot media, we can use the second partition
* for our environment purpose (if present!).
*/
static int register_persistant_environment(void)
{
struct cdev *cdev;
/*
* The imx23-olinuxino only has one MCI card socket.
* So, we expect its name as "disk0".
*/
cdev = cdev_by_name("disk0");
if (cdev == NULL) {
pr_err("No MCI card preset\n");
return -ENODEV;
}
/* MCI card is present, also a useable partition on it? */
cdev = cdev_by_name("disk0.1");
if (cdev == NULL) {
pr_err("No second partition available\n");
pr_info("Please create at least a second partition with"
" 256 kiB...512 kiB in size (your choice)\n");
return -ENODEV;
}
/* use the full partition as our persistent environment storage */
cdev = devfs_add_partition("disk0.1", 0, cdev->size,
DEVFS_PARTITION_FIXED, "env0");
if (IS_ERR(cdev))
return PTR_ERR(cdev);
return 0;
}
static int mx23_evk_devices_init(void)
{
int i, rc;
/* initizalize gpios */
for (i = 0; i < ARRAY_SIZE(pad_setup); i++)
imx_gpio_mode(pad_setup[i]);
armlinux_set_architecture(MACH_TYPE_MX23EVK);
add_generic_device("mxs_mci", DEVICE_ID_DYNAMIC, NULL, IMX_SSP1_BASE,
0x8000, IORESOURCE_MEM, &mci_pdata);
rc = register_persistant_environment();
if (rc != 0)
printf("Cannot create the 'env0' persistant "
"environment storage (%d)\n", rc);
#ifdef CONFIG_USB_GADGET_DRIVER_ARC
imx23_usb_phy_enable();
add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_USB_BASE, NULL);
add_generic_device("fsl-udc", DEVICE_ID_DYNAMIC, NULL, IMX_USB_BASE,
0x200, IORESOURCE_MEM, &usb_pdata);
#endif
return 0;
}
device_initcall(mx23_evk_devices_init);
static int mx23_evk_console_init(void)
{
barebox_set_model("Freescale i.MX23 EVK");
barebox_set_hostname("mx23evk");
add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192,
IORESOURCE_MEM, NULL);
return 0;
}
console_initcall(mx23_evk_console_init);
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