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Diffstat (limited to 'board/syteco/zmx25/zmx25.c')
-rw-r--r--board/syteco/zmx25/zmx25.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/board/syteco/zmx25/zmx25.c b/board/syteco/zmx25/zmx25.c
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+++ b/board/syteco/zmx25/zmx25.c
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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 <mxc_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] */
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(3, 15), MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_set(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] */
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(1, 28), MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(1, 28), 1);
+
+ writel(gpio_mux_mode5, &muxctl->pad_csi_d2); /* USB OC GPIO1[27] */
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(1, 18), MXC_GPIO_DIRECTION_IN);
+
+ /* 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 */
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(1, 7), 0);
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(1, 7), MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(1, 6), 0);
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(1, 6), MXC_GPIO_DIRECTION_OUT);
+
+ /* 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 */
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(2, 29), MXC_GPIO_DIRECTION_IN);
+
+ /* 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 */
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(4, 21), 0);
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(4, 21), MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(1, 29), MXC_GPIO_DIRECTION_OUT);
+
+ /* 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) */
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(3, 16), 0);
+ mxc_gpio_direction(MXC_GPIO_PORT_TO_NUM(3, 16), MXC_GPIO_DIRECTION_OUT);
+
+ udelay(5000);
+
+ /* deassert PHY reset */
+ mxc_gpio_set(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 = mxc_gpio_get(MXC_GPIO_PORT_TO_NUM(2, 29));
+
+ if (key) {
+ /* Switch on both LEDs to inidcate boot mode */
+ mxc_gpio_set(MXC_GPIO_PORT_TO_NUM(1, 29), 0);
+ mxc_gpio_set(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;
+}
+
+void dram_init_banksize(void)
+{
+ gd->bd->bi_dram[0].start = PHYS_SDRAM;
+ gd->bd->bi_dram[0].size = gd->ram_size;
+}