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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
- */
- #include <common.h>
- #include <dm.h>
- #include <env.h>
- #include <misc.h>
- #include <spl.h>
- #include <syscon.h>
- #include <usb.h>
- #include <dm/pinctrl.h>
- #include <dm/uclass-internal.h>
- #include <asm/io.h>
- #include <asm/setup.h>
- #include <asm/arch-rockchip/clock.h>
- #include <asm/arch-rockchip/hardware.h>
- #include <asm/arch-rockchip/grf_rk3399.h>
- #include <asm/arch-rockchip/periph.h>
- #include <power/regulator.h>
- #include <u-boot/sha256.h>
- static void setup_macaddr(void)
- {
- #if CONFIG_IS_ENABLED(CMD_NET)
- int ret;
- const char *cpuid = env_get("cpuid#");
- u8 hash[SHA256_SUM_LEN];
- int size = sizeof(hash);
- u8 mac_addr[6];
- /* Only generate a MAC address, if none is set in the environment */
- if (env_get("ethaddr"))
- return;
- if (!cpuid) {
- debug("%s: could not retrieve 'cpuid#'\n", __func__);
- return;
- }
- ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
- if (ret) {
- debug("%s: failed to calculate SHA256\n", __func__);
- return;
- }
- /* Copy 6 bytes of the hash to base the MAC address on */
- memcpy(mac_addr, hash, 6);
- /* Make this a valid MAC address and set it */
- mac_addr[0] &= 0xfe; /* clear multicast bit */
- mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
- eth_env_set_enetaddr("ethaddr", mac_addr);
- #endif
- }
- static void setup_serial(void)
- {
- #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
- const u32 cpuid_offset = 0x7;
- const u32 cpuid_length = 0x10;
- struct udevice *dev;
- int ret, i;
- u8 cpuid[cpuid_length];
- u8 low[cpuid_length/2], high[cpuid_length/2];
- char cpuid_str[cpuid_length * 2 + 1];
- u64 serialno;
- char serialno_str[17];
- /* retrieve the device */
- ret = uclass_get_device_by_driver(UCLASS_MISC,
- DM_GET_DRIVER(rockchip_efuse), &dev);
- if (ret) {
- debug("%s: could not find efuse device\n", __func__);
- return;
- }
- /* read the cpu_id range from the efuses */
- ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid));
- if (ret) {
- debug("%s: reading cpuid from the efuses failed\n",
- __func__);
- return;
- }
- memset(cpuid_str, 0, sizeof(cpuid_str));
- for (i = 0; i < 16; i++)
- sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
- debug("cpuid: %s\n", cpuid_str);
- /*
- * Mix the cpuid bytes using the same rules as in
- * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
- */
- for (i = 0; i < 8; i++) {
- low[i] = cpuid[1 + (i << 1)];
- high[i] = cpuid[i << 1];
- }
- serialno = crc32_no_comp(0, low, 8);
- serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
- snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
- env_set("cpuid#", cpuid_str);
- env_set("serial#", serialno_str);
- #endif
- }
- 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)
- {
- setup_serial();
- setup_macaddr();
- 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);
- }
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