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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 <init.h>
#include <log.h>
#include <misc.h>
#include <spl.h>
#include <syscon.h>
#include <u-boot/crc.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 <asm/arch-rockchip/misc.h>
#include <power/regulator.h>
#include <u-boot/sha256.h>
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_read_chosen_string("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);
}
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