// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void setup_iodomain(void) { const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3; struct rk3399_grf_regs *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); /* * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6). * Linux assumes that PCIE_RST# works out of the box as it probes * PCIe before loading the iodomain driver. */ rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT); } /* * Swap mmc0 and mmc1 in boot_targets if booted from SD-Card. * * If bootsource is uSD-card we can assume that we want to use the * SD-Card instead of the eMMC as first boot_target for distroboot. * We only want to swap the defaults and not any custom environment a * user has set. We exit early if a changed boot_targets environment * is detected. */ static int setup_boottargets(void) { const char *boot_device = ofnode_get_chosen_prop("u-boot,spl-boot-device"); char *env_default, *env; if (!boot_device) { debug("%s: /chosen/u-boot,spl-boot-device not set\n", __func__); return -1; } debug("%s: booted from %s\n", __func__, boot_device); env_default = env_get_default("boot_targets"); env = env_get("boot_targets"); if (!env) { debug("%s: boot_targets does not exist\n", __func__); return -1; } debug("%s: boot_targets current: %s - default: %s\n", __func__, env, env_default); if (strcmp(env_default, env) != 0) { debug("%s: boot_targets not default, don't change it\n", __func__); return 0; } /* * Only run, if booting from mmc1 (i.e. /dwmmc@fe320000) and * only consider cases where the default boot-order first * tries to boot from mmc0 (eMMC) and then from mmc1 * (i.e. external SD). * * In other words: the SD card will be moved to earlier in the * order, if U-Boot was also loaded from the SD-card. */ if (!strcmp(boot_device, "/dwmmc@fe320000")) { char *mmc0, *mmc1; debug("%s: booted from SD-Card\n", __func__); mmc0 = strstr(env, "mmc0"); mmc1 = strstr(env, "mmc1"); if (!mmc0 || !mmc1) { debug("%s: only one mmc boot_target found\n", __func__); return -1; } /* * If mmc0 comes first in the boot order, we need to change * the strings to make mmc1 first. */ if (mmc0 < mmc1) { mmc0[3] = '1'; mmc1[3] = '0'; debug("%s: set boot_targets to: %s\n", __func__, env); env_set("boot_targets", env); } } return 0; } int misc_init_r(void) { const u32 cpuid_offset = 0x7; const u32 cpuid_length = 0x10; u8 cpuid[cpuid_length]; int ret; ret = rockchip_cpuid_from_efuse(cpuid_offset, cpuid_length, cpuid); if (ret) return ret; ret = rockchip_cpuid_set(cpuid, cpuid_length); if (ret) return ret; ret = rockchip_setup_macaddr(); if (ret) return ret; setup_iodomain(); setup_boottargets(); return 0; } #ifdef CONFIG_SERIAL_TAG void get_board_serial(struct tag_serialnr *serialnr) { char *serial_string; u64 serial = 0; serial_string = env_get("serial#"); if (serial_string) serial = simple_strtoull(serial_string, NULL, 16); serialnr->high = (u32)(serial >> 32); serialnr->low = (u32)(serial & 0xffffffff); } #endif /** * Switch power at an external regulator (for our root hub). * * @param ctrl pointer to the xHCI controller * @param port port number as in the control message (one-based) * @param enable boolean indicating whether to enable or disable power * @return returns 0 on success, an error-code on failure */ static int board_usb_port_power_set(struct udevice *dev, int port, bool enable) { #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR) /* We start counting ports at 0, while USB counts from 1. */ int index = port - 1; const char *regname = NULL; struct udevice *regulator; const char *prop = "tsd,usb-port-power"; int ret; debug("%s: ctrl '%s' port %d enable %s\n", __func__, dev_read_name(dev), port, enable ? "true" : "false"); ret = dev_read_string_index(dev, prop, index, ®name); if (ret < 0) { debug("%s: ctrl '%s' port %d: no entry in '%s'\n", __func__, dev_read_name(dev), port, prop); return ret; } ret = regulator_get_by_platname(regname, ®ulator); if (ret) { debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n", __func__, dev_read_name(dev), port, regname); return ret; } regulator_set_enable(regulator, enable); return 0; #else return -ENOTSUPP; #endif } void usb_hub_reset_devices(struct usb_hub_device *hub, int port) { struct udevice *dev = hub->pusb_dev->dev; struct udevice *ctrl; /* We are only interested in our root-hubs */ if (usb_hub_is_root_hub(dev) == false) return; ctrl = usb_get_bus(dev); if (!ctrl) { debug("%s: could not retrieve ctrl for hub\n", __func__); return; } /* * To work around an incompatibility between the single-threaded * USB stack in U-Boot and (a strange low-power mode of) the USB * hub we have on-module, we need to delay powering on the hub * until the first time the port is probed. */ board_usb_port_power_set(ctrl, port, true); }