LXR uboot/board/theobroma-systems/puma

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
   4 */
   5
   6#include <common.h>
   7#include <dm.h>
   8#include <env.h>
   9#include <init.h>
  10#include <log.h>
  11#include <misc.h>
  12#include <spl.h>
  13#include <syscon.h>
  14#include <u-boot/crc.h>
  15#include <usb.h>
  16#include <dm/pinctrl.h>
  17#include <dm/uclass-internal.h>
  18#include <asm/io.h>
  19#include <asm/setup.h>
  20#include <asm/arch-rockchip/clock.h>
  21#include <asm/arch-rockchip/hardware.h>
  22#include <asm/arch-rockchip/grf_rk3399.h>
  23#include <asm/arch-rockchip/periph.h>
  24#include <asm/arch-rockchip/misc.h>
  25#include <power/regulator.h>
  26#include <u-boot/sha256.h>
  27
  28static void setup_iodomain(void)
  29{
  30        const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
  31        struct rk3399_grf_regs *grf =
  32            syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
  33
  34        /*
  35         * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6).
  36         * Linux assumes that PCIE_RST# works out of the box as it probes
  37         * PCIe before loading the iodomain driver.
  38         */
  39        rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT);
  40}
  41
  42/*
  43 * Swap mmc0 and mmc1 in boot_targets if booted from SD-Card.
  44 *
  45 * If bootsource is uSD-card we can assume that we want to use the
  46 * SD-Card instead of the eMMC as first boot_target for distroboot.
  47 * We only want to swap the defaults and not any custom environment a
  48 * user has set. We exit early if a changed boot_targets environment
  49 * is detected.
  50 */
  51static int setup_boottargets(void)
  52{
  53        const char *boot_device =
  54                ofnode_read_chosen_string("u-boot,spl-boot-device");
  55        char *env_default, *env;
  56
  57        if (!boot_device) {
  58                debug("%s: /chosen/u-boot,spl-boot-device not set\n",
  59                      __func__);
  60                return -1;
  61        }
  62        debug("%s: booted from %s\n", __func__, boot_device);
  63
  64        env_default = env_get_default("boot_targets");
  65        env = env_get("boot_targets");
  66        if (!env) {
  67                debug("%s: boot_targets does not exist\n", __func__);
  68                return -1;
  69        }
  70        debug("%s: boot_targets current: %s - default: %s\n",
  71              __func__, env, env_default);
  72
  73        if (strcmp(env_default, env) != 0) {
  74                debug("%s: boot_targets not default, don't change it\n",
  75                      __func__);
  76                return 0;
  77        }
  78
  79        /*
  80         * Only run, if booting from mmc1 (i.e. /mmc@fe320000) and
  81         * only consider cases where the default boot-order first
  82         * tries to boot from mmc0 (eMMC) and then from mmc1
  83         * (i.e. external SD).
  84         *
  85         * In other words: the SD card will be moved to earlier in the
  86         * order, if U-Boot was also loaded from the SD-card.
  87         */
  88        if (!strcmp(boot_device, "/mmc@fe320000")) {
  89                char *mmc0, *mmc1;
  90
  91                debug("%s: booted from SD-Card\n", __func__);
  92                mmc0 = strstr(env, "mmc0");
  93                mmc1 = strstr(env, "mmc1");
  94
  95                if (!mmc0 || !mmc1) {
  96                        debug("%s: only one mmc boot_target found\n", __func__);
  97                        return -1;
  98                }
  99
 100                /*
 101                 * If mmc0 comes first in the boot order, we need to change
 102                 * the strings to make mmc1 first.
 103                 */
 104                if (mmc0 < mmc1) {
 105                        mmc0[3] = '1';
 106                        mmc1[3] = '0';
 107                        debug("%s: set boot_targets to: %s\n", __func__, env);
 108                        env_set("boot_targets", env);
 109                }
 110        }
 111
 112        return 0;
 113}
 114
 115int misc_init_r(void)
 116{
 117        const u32 cpuid_offset = 0x7;
 118        const u32 cpuid_length = 0x10;
 119        u8 cpuid[cpuid_length];
 120        int ret;
 121
 122        ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid);
 123        if (ret)
 124                return ret;
 125
 126        ret = rockchip_cpuid_set(cpuid, cpuid_length);
 127        if (ret)
 128                return ret;
 129
 130        ret = rockchip_setup_macaddr();
 131        if (ret)
 132                return ret;
 133
 134        setup_iodomain();
 135        setup_boottargets();
 136
 137        return 0;
 138}
 139
 140#ifdef CONFIG_SERIAL_TAG
 141void get_board_serial(struct tag_serialnr *serialnr)
 142{
 143        char *serial_string;
 144        u64 serial = 0;
 145
 146        serial_string = env_get("serial#");
 147
 148        if (serial_string)
 149                serial = simple_strtoull(serial_string, NULL, 16);
 150
 151        serialnr->high = (u32)(serial >> 32);
 152        serialnr->low = (u32)(serial & 0xffffffff);
 153}
 154#endif
 155