*
* SPDX-License-Identifier: GPL-2.0+
*/
+
#include <common.h>
#include <dm.h>
+#include <environment.h>
#include <misc.h>
-#include <ram.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/gpio.h>
#include <asm/setup.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3399.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/grf_rk3399.h>
#include <asm/arch/periph.h>
#include <power/regulator.h>
#include <u-boot/sha256.h>
int board_init(void)
{
- struct udevice *pinctrl, *regulator;
int ret;
/*
- * The PWM does not have decicated interrupt number in dts and can
- * not get periph_id by pinctrl framework, so let's init them here.
- * The PWM2 and PWM3 are for pwm regulators.
+ * We need to call into regulators_enable_boot_on() again, as the call
+ * during SPL may have not included all regulators.
*/
- ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
- if (ret) {
- debug("%s: Cannot find pinctrl device\n", __func__);
- goto out;
- }
+ ret = regulators_enable_boot_on(false);
+ if (ret)
+ debug("%s: Cannot enable boot on regulator\n", __func__);
- ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2);
- if (ret) {
- debug("%s PWM2 pinctrl init fail!\n", __func__);
- goto out;
- }
+ return 0;
+}
- /* rk3399 need to init vdd_center to get the correct output voltage */
- ret = regulator_get_by_platname("vdd_center", ®ulator);
- if (ret)
- debug("%s: Cannot get vdd_center regulator\n", __func__);
+static void rk3399_force_power_on_reset(void)
+{
+ ofnode node;
+ struct gpio_desc sysreset_gpio;
- ret = regulator_get_by_platname("vcc5v0_host", ®ulator);
- if (ret) {
- debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret);
- goto out;
+ debug("%s: trying to force a power-on reset\n", __func__);
+
+ node = ofnode_path("/config");
+ if (!ofnode_valid(node)) {
+ debug("%s: no /config node?\n", __func__);
+ return;
}
- ret = regulator_set_enable(regulator, true);
- if (ret) {
- debug("%s vcc5v0-host-en set fail!\n", __func__);
- goto out;
+ if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
+ &sysreset_gpio, GPIOD_IS_OUT)) {
+ debug("%s: could not find a /config/sysreset-gpio\n", __func__);
+ return;
}
-out:
- return 0;
+ dm_gpio_set_value(&sysreset_gpio, 1);
+}
+
+void spl_board_init(void)
+{
+ int ret;
+ struct rk3399_cru *cru = rockchip_get_cru();
+
+ /*
+ * The RK3399 resets only 'almost all logic' (see also in the TRM
+ * "3.9.4 Global software reset"), when issuing a software reset.
+ * This may cause issues during boot-up for some configurations of
+ * the application software stack.
+ *
+ * To work around this, we test whether the last reset reason was
+ * a power-on reset and (if not) issue an overtemp-reset to reset
+ * the entire module.
+ *
+ * While this was previously fixed by modifying the various places
+ * that could generate a software reset (e.g. U-Boot's sysreset
+ * driver, the ATF or Linux), we now have it here to ensure that
+ * we no longer have to track this through the various components.
+ */
+ if (cru->glb_rst_st != 0)
+ rk3399_force_power_on_reset();
+
+ /*
+ * Turning the eMMC and SPI back on (if disabled via the Qseven
+ * BIOS_ENABLE) signal is done through a always-on regulator).
+ */
+ ret = regulators_enable_boot_on(false);
+ if (ret)
+ debug("%s: Cannot enable boot on regulator\n", __func__);
+
+ preloader_console_init();
}
static void setup_macaddr(void)
{
#if CONFIG_IS_ENABLED(CMD_NET)
int ret;
- const char *cpuid = getenv("cpuid#");
+ 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 (getenv("ethaddr"))
+ if (env_get("ethaddr"))
return;
if (!cpuid) {
/* 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_setenv_enetaddr("ethaddr", mac_addr);
+ eth_env_set_enetaddr("ethaddr", mac_addr);
#endif
-
- return;
}
static void setup_serial(void)
u8 low[cpuid_length/2], high[cpuid_length/2];
char cpuid_str[cpuid_length * 2 + 1];
u64 serialno;
- char serialno_str[16];
+ char serialno_str[17];
/* retrieve the device */
ret = uclass_get_device_by_driver(UCLASS_MISC,
serialno = crc32_no_comp(0, low, 8);
serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
- snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno);
+ snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
- setenv("cpuid#", cpuid_str);
- setenv("serial#", serialno_str);
+ env_set("cpuid#", cpuid_str);
+ env_set("serial#", serialno_str);
#endif
+}
- return;
+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);
}
int misc_init_r(void)
{
setup_serial();
setup_macaddr();
+ setup_iodomain();
return 0;
}
char *serial_string;
u64 serial = 0;
- serial_string = getenv("serial#");
+ serial_string = env_get("serial#");
if (serial_string)
serial = simple_strtoull(serial_string, NULL, 16);
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);
+}