LXR uboot/board/liebherr/xea/xea.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * XEA iMX28 board
   4 *
   5 * Copyright (C) 2019 DENX Software Engineering
   6 * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
   7 *
   8 * Copyright (C) 2018 DENX Software Engineering
   9 * Måns Rullgård, DENX Software Engineering, mans@mansr.com
  10 *
  11 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  12 * on behalf of DENX Software Engineering GmbH
  13 *
  14 */
  15
  16#include <common.h>
  17#include <fdt_support.h>
  18#include <init.h>
  19#include <log.h>
  20#include <net.h>
  21#include <asm/global_data.h>
  22#include <asm/gpio.h>
  23#include <asm/io.h>
  24#include <asm/arch/imx-regs.h>
  25#include <asm/arch/iomux-mx28.h>
  26#include <asm/arch/clock.h>
  27#include <asm/arch/sys_proto.h>
  28#include <linux/delay.h>
  29#include <linux/mii.h>
  30#include <miiphy.h>
  31#include <netdev.h>
  32#include <errno.h>
  33#include <usb.h>
  34#include <serial.h>
  35
  36#ifdef CONFIG_SPL_BUILD
  37#include <spl.h>
  38#endif
  39
  40DECLARE_GLOBAL_DATA_PTR;
  41
  42/*
  43 * Functions
  44 */
  45
  46static void init_clocks(void)
  47{
  48        /* IO0 clock at 480MHz */
  49        mxs_set_ioclk(MXC_IOCLK0, 480000);
  50        /* IO1 clock at 480MHz */
  51        mxs_set_ioclk(MXC_IOCLK1, 480000);
  52
  53        /* SSP0 clock at 96MHz */
  54        mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
  55        /* SSP2 clock at 160MHz */
  56        mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
  57        /* SSP3 clock at 96MHz */
  58        mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
  59}
  60
  61#ifdef CONFIG_SPL_BUILD
  62void board_init_f(ulong arg)
  63{
  64        init_clocks();
  65        preloader_console_init();
  66}
  67
  68static int boot_tiva0, boot_tiva1;
  69
  70/* Check if TIVAs request booting via U-Boot proper */
  71void spl_board_init(void)
  72{
  73        struct gpio_desc btiva0, btiva1, en_3_3v;
  74        int ret;
  75
  76        /*
  77         * Setup GPIO0_0 (TIVA power enable pin) to be output high
  78         * to allow TIVA startup.
  79         */
  80        ret = dm_gpio_lookup_name("GPIO0_0", &en_3_3v);
  81        if (ret)
  82                printf("Cannot get GPIO0_0\n");
  83
  84        ret = dm_gpio_request(&en_3_3v, "pwr_3_3v");
  85        if (ret)
  86                printf("Cannot request GPIO0_0\n");
  87
  88        /* Set GPIO0_0 to HIGH */
  89        dm_gpio_set_dir_flags(&en_3_3v, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
  90
  91        ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
  92        if (ret)
  93                printf("Cannot get GPIO0_23\n");
  94
  95        ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
  96        if (ret)
  97                printf("Cannot get GPIO0_25\n");
  98
  99        ret = dm_gpio_request(&btiva0, "boot-tiva0");
 100        if (ret)
 101                printf("Cannot request GPIO0_23\n");
 102
 103        ret = dm_gpio_request(&btiva1, "boot-tiva1");
 104        if (ret)
 105                printf("Cannot request GPIO0_25\n");
 106
 107        dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
 108        dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
 109
 110        udelay(1000);
 111
 112        boot_tiva0 = dm_gpio_get_value(&btiva0);
 113        boot_tiva1 = dm_gpio_get_value(&btiva1);
 114}
 115
 116void board_boot_order(u32 *spl_boot_list)
 117{
 118        spl_boot_list[0] = BOOT_DEVICE_MMC1;
 119        spl_boot_list[1] = BOOT_DEVICE_SPI;
 120        spl_boot_list[2] = BOOT_DEVICE_UART;
 121}
 122
 123int spl_start_uboot(void)
 124{
 125        /* break into full u-boot on 'c' */
 126        if (serial_tstc() && serial_getc() == 'c')
 127                return 1;
 128
 129        debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
 130        return !boot_tiva0 || !boot_tiva1;
 131}
 132#else
 133
 134int board_early_init_f(void)
 135{
 136        init_clocks();
 137
 138        return 0;
 139}
 140
 141int board_init(void)
 142{
 143        struct gpio_desc phy_rst;
 144        int ret;
 145
 146        /* Address of boot parameters */
 147        gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 148
 149        cpu_eth_init(NULL);
 150
 151        /* PHY INT#/PWDN# */
 152        ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
 153        if (ret) {
 154                printf("Cannot get GPIO4_13\n");
 155                return ret;
 156        }
 157
 158        ret = dm_gpio_request(&phy_rst, "phy-rst");
 159        if (ret) {
 160                printf("Cannot request GPIO4_13\n");
 161                return ret;
 162        }
 163
 164        dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
 165        udelay(1000);
 166
 167        return 0;
 168}
 169
 170int dram_init(void)
 171{
 172        return mxs_dram_init();
 173}
 174
 175#ifdef CONFIG_OF_BOARD_SETUP
 176static int fdt_fixup_l2switch(void *blob)
 177{
 178        u8 ethaddr[6];
 179        int ret;
 180
 181        if (eth_env_get_enetaddr("ethaddr", ethaddr)) {
 182                ret = fdt_find_and_setprop(blob,
 183                                           "/ahb@80080000/switch@800f0000",
 184                                           "local-mac-address", ethaddr, 6, 1);
 185                if (ret < 0)
 186                        printf("%s: can't find usbether@1 node: %d\n",
 187                               __func__, ret);
 188        }
 189
 190        return 0;
 191}
 192
 193int ft_board_setup(void *blob, struct bd_info *bd)
 194{
 195        /*
 196         * i.MX28 L2 switch needs manual update (fixup) of eth MAC address
 197         * (in 'local-mac-address' property) as it uses "switch@800f0000"
 198         * node, not set by default FIT image handling code in
 199         * "ethernet@800f0000"
 200         */
 201        fdt_fixup_l2switch(blob);
 202
 203        return 0;
 204}
 205#endif
 206
 207#endif  /* CONFIG_SPL_BUILD */
 208