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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/imx25-pinmux.h>
DECLARE_GLOBAL_DATA_PTR;
int board_init()
{
struct iomuxc_mux_ctl *muxctl;
struct iomuxc_pad_ctl *padctl;
struct iomuxc_pad_input_select *inputselect;
u32 gpio_mux_mode0_sion = MX25_PIN_MUX_MODE(0) | MX25_PIN_MUX_SION;
u32 gpio_mux_mode1 = MX25_PIN_MUX_MODE(1);
u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
u32 gpio_mux_mode6 = MX25_PIN_MUX_MODE(6);
u32 input_select1 = MX25_PAD_INPUT_SELECT_DAISY(1);
u32 input_select2 = MX25_PAD_INPUT_SELECT_DAISY(2);
icache_enable();
muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
inputselect = (struct iomuxc_pad_input_select *)IMX_IOPADINPUTSEL_BASE;
/* Setup of core volatage selection pin to run at 1.4V */
writel(gpio_mux_mode5, &muxctl->pad_ext_armclk); /* VCORE GPIO3[15] */
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 15), 1);
/* Setup of input daisy chains for SD card pins*/
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_cmd);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_clk);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data0);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data1);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data2);
writel(gpio_mux_mode0_sion, &muxctl->pad_sd1_data3);
/* Setup of digital output for USB power and OC */
writel(gpio_mux_mode5, &muxctl->pad_csi_d3); /* USB Power GPIO1[28] */
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 28), 1);
writel(gpio_mux_mode5, &muxctl->pad_csi_d2); /* USB OC GPIO1[27] */
gpio_direction_input(MXC_GPIO_PORT_TO_NUM(1, 18));
/* Setup of digital output control pins */
writel(gpio_mux_mode5, &muxctl->pad_csi_d8); /* Ouput 1 Ctrl GPIO1[7] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d7); /* Ouput 2 Ctrl GPIO1[6] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d6); /* Ouput 1 Stat GPIO1[31]*/
writel(gpio_mux_mode5, &muxctl->pad_csi_d5); /* Ouput 2 Stat GPIO1[30]*/
writel(0, &padctl->pad_csi_d6); /* Ouput 1 Stat pull up off */
writel(0, &padctl->pad_csi_d5); /* Ouput 2 Stat pull up off */
/* Switch both output drivers off */
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 7), 0);
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 6), 0);
/* Setup of key input pin GPIO2[29]*/
writel(gpio_mux_mode5 | MX25_PIN_MUX_SION, &muxctl->pad_kpp_row0);
writel(0, &padctl->pad_kpp_row0); /* Key pull up off */
gpio_direction_input(MXC_GPIO_PORT_TO_NUM(2, 29));
/* Setup of status LED outputs */
writel(gpio_mux_mode5, &muxctl->pad_csi_d9); /* GPIO4[21] */
writel(gpio_mux_mode5, &muxctl->pad_csi_d4); /* GPIO1[29] */
/* Switch both LEDs off */
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(4, 21), 0);
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
/* Setup of CAN1 and CAN2 signals */
writel(gpio_mux_mode6, &muxctl->pad_gpio_a); /* CAN1 TX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_b); /* CAN1 RX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_c); /* CAN2 TX */
writel(gpio_mux_mode6, &muxctl->pad_gpio_d); /* CAN2 RX */
/* Setup of input daisy chains for CAN signals*/
writel(input_select1, &inputselect->can1_ipp_ind_canrx); /* CAN1 RX */
writel(input_select1, &inputselect->can2_ipp_ind_canrx); /* CAN2 RX */
/* Setup of I2C3 signals */
writel(gpio_mux_mode1, &muxctl->pad_cspi1_ss1); /* I2C3 SDA */
writel(gpio_mux_mode1, &muxctl->pad_gpio_e); /* I2C3 SCL */
/* Setup of input daisy chains for I2C3 signals*/
writel(input_select1, &inputselect->i2c3_ipp_sda_in); /* I2C3 SDA */
writel(input_select2, &inputselect->i2c3_ipp_scl_in); /* I2C3 SCL */
/* board id for linux */
gd->bd->bi_arch_number = MACH_TYPE_ZMX25;
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
return 0;
}
int board_late_init(void)
{
const char *e;
#ifdef CONFIG_FEC_MXC
struct iomuxc_mux_ctl *muxctl;
struct iomuxc_pad_ctl *padctl;
u32 gpio_mux_mode2 = MX25_PIN_MUX_MODE(2);
u32 gpio_mux_mode5 = MX25_PIN_MUX_MODE(5);
/*
* fec pin init is generic
*/
mx25_fec_init_pins();
/*
* Set up LAN-RESET and FEC_RX_ERR
*
* LAN-RESET: GPIO3[16] is ALT 5 mode of pin U20
* FEC_RX_ERR: FEC_RX_ERR is ALT 2 mode of pin R2
*/
muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
writel(gpio_mux_mode5, &muxctl->pad_upll_bypclk);
writel(gpio_mux_mode2, &muxctl->pad_uart2_cts);
/* assert PHY reset (low) */
gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 16), 0);
udelay(5000);
/* deassert PHY reset */
gpio_set_value(MXC_GPIO_PORT_TO_NUM(3, 16), 1);
udelay(5000);
#endif
e = getenv("gs_base_board");
if (e != NULL) {
if (strcmp(e, "G283") == 0) {
int key = gpio_get_value(MXC_GPIO_PORT_TO_NUM(2, 29));
if (key) {
/* Switch on both LEDs to inidcate boot mode */
gpio_set_value(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
gpio_set_value(MXC_GPIO_PORT_TO_NUM(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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