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/*
* (c) 2011 Graf-Syteco, Matthias Weisser
* <weisserm@arcor.de>
*
* Based on tx25.c:
* (C) Copyright 2009 DENX Software Engineering
* Author: John Rigby <jrigby@gmail.com>
*
* Based on imx27lite.c:
* Copyright (C) 2008,2009 Eric Jarrige <jorasse@users.sourceforge.net>
* Copyright (C) 2009 Ilya Yanok <yanok@emcraft.com>
* And:
* RedBoot tx25_misc.c Copyright (C) 2009 Red Hat
*
* 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 <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux-mx25.h>
DECLARE_GLOBAL_DATA_PTR;
int board_init()
{
static const iomux_v3_cfg_t sdhc1_pads[] = {
NEW_PAD_CTRL(MX25_PAD_SD1_CMD__SD1_CMD, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_SD1_CLK__SD1_CLK, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_SD1_DATA0__SD1_DATA0, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_SD1_DATA1__SD1_DATA1, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_SD1_DATA2__SD1_DATA2, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_SD1_DATA3__SD1_DATA3, NO_PAD_CTRL),
};
static const iomux_v3_cfg_t dig_out_pads[] = {
MX25_PAD_CSI_D8__GPIO_1_7, /* Ouput 1 Ctrl */
MX25_PAD_CSI_D7__GPIO_1_6, /* Ouput 2 Ctrl */
NEW_PAD_CTRL(MX25_PAD_CSI_D6__GPIO_1_31, 0), /* Ouput 1 Stat */
NEW_PAD_CTRL(MX25_PAD_CSI_D5__GPIO_1_30, 0), /* Ouput 2 Stat */
};
static const iomux_v3_cfg_t led_pads[] = {
MX25_PAD_CSI_D9__GPIO_4_21,
MX25_PAD_CSI_D4__GPIO_1_29,
};
static const iomux_v3_cfg_t can_pads[] = {
NEW_PAD_CTRL(MX25_PAD_GPIO_A__CAN1_TX, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_GPIO_B__CAN1_RX, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_GPIO_C__CAN2_TX, NO_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_GPIO_D__CAN2_RX, NO_PAD_CTRL),
};
static const iomux_v3_cfg_t i2c3_pads[] = {
MX25_PAD_CSPI1_SS1__I2C3_DAT,
MX25_PAD_GPIO_E__I2C3_CLK,
};
icache_enable();
/* Setup of core voltage selection pin to run at 1.4V */
imx_iomux_v3_setup_pad(MX25_PAD_EXT_ARMCLK__GPIO_3_15); /* VCORE */
gpio_direction_output(IMX_GPIO_NR(3, 15), 1);
/* Setup of SD card pins*/
imx_iomux_v3_setup_multiple_pads(sdhc1_pads, ARRAY_SIZE(sdhc1_pads));
/* Setup of digital output for USB power and OC */
imx_iomux_v3_setup_pad(MX25_PAD_CSI_D3__GPIO_1_28); /* USB Power */
gpio_direction_output(IMX_GPIO_NR(1, 28), 1);
imx_iomux_v3_setup_pad(MX25_PAD_CSI_D2__GPIO_1_27); /* USB OC */
gpio_direction_input(IMX_GPIO_NR(1, 18));
/* Setup of digital output control pins */
imx_iomux_v3_setup_multiple_pads(dig_out_pads,
ARRAY_SIZE(dig_out_pads));
/* Switch both output drivers off */
gpio_direction_output(IMX_GPIO_NR(1, 7), 0);
gpio_direction_output(IMX_GPIO_NR(1, 6), 0);
/* Setup of key input pin */
imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX25_PAD_KPP_ROW0__GPIO_2_29, 0));
gpio_direction_input(IMX_GPIO_NR(2, 29));
/* Setup of status LED outputs */
imx_iomux_v3_setup_multiple_pads(led_pads, ARRAY_SIZE(led_pads));
/* Switch both LEDs off */
gpio_direction_output(IMX_GPIO_NR(4, 21), 0);
gpio_direction_output(IMX_GPIO_NR(1, 29), 0);
/* Setup of CAN1 and CAN2 signals */
imx_iomux_v3_setup_multiple_pads(can_pads, ARRAY_SIZE(can_pads));
/* Setup of I2C3 signals */
imx_iomux_v3_setup_multiple_pads(i2c3_pads, ARRAY_SIZE(i2c3_pads));
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
return 0;
}
int board_late_init(void)
{
const char *e;
#ifdef CONFIG_FEC_MXC
/*
* FIXME: need to revisit this
* The original code enabled PUE and 100-k pull-down without PKE, so the right
* value here is likely:
* 0 for no pull
* or:
* PAD_CTL_PUS_100K_DOWN for 100-k pull-down
*/
#define FEC_OUT_PAD_CTRL 0
static const iomux_v3_cfg_t fec_pads[] = {
MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
MX25_PAD_FEC_RX_DV__FEC_RX_DV,
MX25_PAD_FEC_RDATA0__FEC_RDATA0,
NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
MX25_PAD_FEC_MDIO__FEC_MDIO,
MX25_PAD_FEC_RDATA1__FEC_RDATA1,
NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
MX25_PAD_UPLL_BYPCLK__GPIO_3_16, /* LAN-RESET */
MX25_PAD_UART2_CTS__FEC_RX_ER, /* FEC_RX_ERR */
};
imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
/* assert PHY reset (low) */
gpio_direction_output(IMX_GPIO_NR(3, 16), 0);
udelay(5000);
/* deassert PHY reset */
gpio_set_value(IMX_GPIO_NR(3, 16), 1);
udelay(5000);
#endif
e = getenv("gs_base_board");
if (e != NULL) {
if (strcmp(e, "G283") == 0) {
int key = gpio_get_value(IMX_GPIO_NR(2, 29));
if (key) {
/* Switch on both LEDs to inidcate boot mode */
gpio_set_value(IMX_GPIO_NR(1, 29), 0);
gpio_set_value(IMX_GPIO_NR(4, 21), 0);
setenv("preboot", "run gs_slow_boot");
} else
setenv("preboot", "run gs_fast_boot");
}
}
return 0;
}
int dram_init(void)
{
/* dram_init must store complete ramsize in gd->ram_size */
gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
PHYS_SDRAM_SIZE);
return 0;
}
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