114 lines
2.8 KiB
C
114 lines
2.8 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 <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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static struct mxs_mci_platform_data mci_pdata = {
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.caps = MMC_MODE_4BIT,
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.voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */
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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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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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static int mx23_evk_devices_init(void)
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{
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int i;
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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_bootparams((void*)IMX_MEMORY_BASE + 0x100);
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armlinux_set_architecture(MACH_TYPE_MX23EVK);
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imx_set_ioclk(480000000); /* enable IOCLK to run at the PLL frequency */
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imx_set_sspclk(0, 100000000, 1);
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add_generic_device("mxs_mci", 0, NULL, IMX_SSP1_BASE, 0,
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IORESOURCE_MEM, &mci_pdata);
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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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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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/** @page mx23_evk Freescale's i.MX23 evaluation kit
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This CPU card is based on an i.MX23 CPU. The card is shipped with:
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- 32 MiB synchronous dynamic RAM (mobile DDR type)
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- ENC28j60 based network (over SPI)
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Memory layout when @b barebox is running:
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- 0x40000000 start of SDRAM
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- 0x40000100 start of kernel's boot parameters
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- below malloc area: stack area
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- below barebox: malloc area
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- 0x41000000 start of @b barebox
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@section get_imx23evk_binary How to get the bootloader binary image:
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Using the default configuration:
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@verbatim
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make ARCH=arm imx23evk_defconfig
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@endverbatim
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Build the bootloader binary image:
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@verbatim
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make ARCH=arm CROSS_COMPILE=armv5compiler
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@endverbatim
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@note replace the armv5compiler with your ARM v5 cross compiler.
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*/
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