diff options
Diffstat (limited to 'arch/arm/boards/imx233-olinuxino/imx23-olinuxino.c')
| -rw-r--r-- | arch/arm/boards/imx233-olinuxino/imx23-olinuxino.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/arch/arm/boards/imx233-olinuxino/imx23-olinuxino.c b/arch/arm/boards/imx233-olinuxino/imx23-olinuxino.c new file mode 100644 index 0000000000..04826388d4 --- /dev/null +++ b/arch/arm/boards/imx233-olinuxino/imx23-olinuxino.c @@ -0,0 +1,254 @@ +/* + * (C) Copyright 2012 Fadil Berisha, <fadil.r.berisha@gmail.com> + * based on falconwing.c & mx23-evk.c + * + * (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. + * + * 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 + */ + +#include <common.h> +#include <init.h> +#include <gpio.h> +#include <environment.h> +#include <errno.h> +#include <mci.h> +#include <asm/armlinux.h> +#include <usb/ehci.h> +#include <mach/usb.h> +#include <generated/mach-types.h> +#include <mach/imx-regs.h> +#include <mach/clock.h> +#include <mach/mci.h> + +static struct mxs_mci_platform_data mci_pdata = { + .caps = MMC_MODE_4BIT | MMC_MODE_HS | MMC_MODE_HS_52MHz, + .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */ + .f_min = 400000, +}; + +static const uint32_t pad_setup[] = { + /* debug port */ + PWM1_DUART_TX | STRENGTH(S4MA), /* PWM0/DUART_TXD - U_DEBUG PIN 2 */ + PWM0_DUART_RX | STRENGTH(S4MA), /* PWM0/DUART_RXD - U_DEBUG PIN 1 */ + + /* auart */ + I2C_SDA_AUART1_RX | STRENGTH(S4MA), + I2C_CLK_AUART1_TX | STRENGTH(S4MA), + + /* lcd */ + LCD_D17 | STRENGTH(S12MA), /*PIN18/LCD_D17 - GPIO PIN 3 */ + LCD_D16 | STRENGTH(S12MA), + LCD_D15 | STRENGTH(S12MA), + LCD_D14 | STRENGTH(S12MA), + LCD_D13 | STRENGTH(S12MA), + LCD_D12 | STRENGTH(S12MA), + LCD_D11 | STRENGTH(S12MA), + LCD_D10 | STRENGTH(S12MA), + LCD_D9 | STRENGTH(S12MA), + LCD_D8 | STRENGTH(S12MA), + LCD_D7 | STRENGTH(S12MA), + LCD_D6 | STRENGTH(S12MA), + LCD_D5 | STRENGTH(S12MA), + LCD_D4 | STRENGTH(S12MA), + LCD_D3 | STRENGTH(S12MA), + LCD_D2 | STRENGTH(S12MA), /* PIN3/LCD_D02 - GPIO PIN 31*/ + LCD_D1 | STRENGTH(S12MA), /* PIN2/LCD_D01 - GPIO PIN 33*/ + LCD_D0 | STRENGTH(S12MA), /* PIN1/LCD_D00 - GPIO PIN 35*/ + LCD_CS, /* PIN26/LCD_CS - GPIO PIN 20*/ + LCD_RS, /* PIN25/LCD_RS - GPIO PIN 18*/ + LCD_WR, /* PIN24/LCD_WR - GPIO PIN 16*/ + LCD_RESET, /* PIN23/LCD_DISP - GPIO PIN 14*/ + LCD_ENABE | STRENGTH(S12MA), /* PIN22/LCD_EN/I2C_SCL - GPIO PIN 12*/ + LCD_VSYNC | STRENGTH(S12MA), /* PIN21/LCD_HSYNC/I2C_SDA- GPIO PIN 10*/ + LCD_HSYNC | STRENGTH(S12MA), /* PIN20/LCD_VSYNC - GPIO PIN 8*/ + LCD_DOTCLOCK | STRENGTH(S12MA), /* PIN19/LCD_DOTCLK - GPIO PIN 6*/ + + + /* 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), + + /* led */ + SSP1_DETECT_GPIO | GPIO_OUT | GPIO_VALUE(1), + + /* gpio - USB hub LAN9512-JZX*/ + GPMI_ALE_GPIO | GPIO_OUT | GPIO_VALUE(1), +}; + +static int imx23_olinuxino_mem_init(void) +{ + arm_add_mem_device("ram0", IMX_MEMORY_BASE, 64 * 1024 * 1024); + + return 0; +} +mem_initcall(imx23_olinuxino_mem_init); + +static void olinuxino_init_usb(void) +{ + + imx23_usb_phy_enable(); + + add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_USB_BASE, NULL); +} + +/** + * 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 */ + return devfs_add_partition("disk0.1", 0, cdev->size, + DEVFS_PARTITION_FIXED, "env0"); +} + + +static int imx23_olinuxino_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_bootparams((void *)IMX_MEMORY_BASE + 0x100); + armlinux_set_architecture(MACH_TYPE_IMX233_OLINUXINO); + + /* enable IOCLK to run at the PLL frequency */ + imx_set_ioclk(480000000); + + /* run the SSP unit clock at 100,000 kHz */ + imx_set_sspclk(0, 100000000, 1); + + add_generic_device("mxs_mci", DEVICE_ID_DYNAMIC, NULL, IMX_SSP1_BASE, + 0x8000, IORESOURCE_MEM, &mci_pdata); + + olinuxino_init_usb(); + + rc = register_persistant_environment(); + if (rc != 0) + printf("Cannot create the 'env0' persistant " + "environment storage (%d)\n", rc); + + return 0; +} + +device_initcall(imx23_olinuxino_devices_init); + +static int imx23_olinuxino_console_init(void) +{ + add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192, + IORESOURCE_MEM, NULL); + + return 0; +} + +console_initcall(imx23_olinuxino_console_init); + +/** @page olinuxino Olimex.ltd's i.MX23 evaluation kit + +This CPU card is based on an i.MX23 CPU. The card is shipped with: + +- 64 MiB synchronous dynamic RAM (mobile DDR type) + + +Memory layout when @b barebox is running: + +- 0x40000000 start of SDRAM +- 0x40000100 start of kernel's boot parameters + - below malloc area: stack area + - below barebox: malloc area +- 0x42000000 start of @b barebox + +@section get_imx23_olinuxino_binary How to get the bootloader binary image: + +Using the default configuration: + +@verbatim +make ARCH=arm imx23_olinuxino_defconfig +@endverbatim + +Build the bootloader binary image: + +@verbatim +make ARCH=arm CROSS_COMPILE=armv5compiler +@endverbatim + +@note replace the armv5compiler with your ARM v5 cross compiler. + +@section imx233-olinuxino How to prepare an MCI card to boot +the imx233-olinuxino with barebox + +- Create four primary partitions on the MCI card + - the first one for the bootlets (about 256 kiB) + - the second one for the persistant environment + (size is up to you, at least 256k) + - the third one for the kernel (2 MiB ... 4 MiB in size) + - the 4th one for the root filesystem which can fill the + rest of the available space + +- Mark the first partition with the partition ID "53" and copy the bootlets + into this partition (currently not part of @b barebox!). + +- @b barebox expect device tree blob file imx23-olinuxino.dtb + into directory env/oftree. At compile time, copy blob file into directory + arch/arm/boards/imx233-olinuxino/env/oftree/. + +- Copy the default @b barebox environment into the second partition + (no filesystem required). + +- Copy the kernel into the third partition (no filesystem required). + +- Create the root filesystem in the 4th partition. You may copy an + image into this partition or you can do it in the classic way: + mkfs on it, mount it and copy all required data and programs into it. +*/ |