2 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <dm/pinctrl.h>
13 #include <dm/uclass-internal.h>
15 #include <asm/setup.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/cru_rk3399.h>
18 #include <asm/arch/periph.h>
19 #include <power/regulator.h>
20 #include <u-boot/sha256.h>
22 DECLARE_GLOBAL_DATA_PTR;
29 * We need to call into regulators_enable_boot_on() again, as the call
30 * during SPL may have not included all regulators.
32 ret = regulators_enable_boot_on(false);
34 debug("%s: Cannot enable boot on regulator\n", __func__);
39 static void rk3399_force_power_on_reset(void)
42 struct gpio_desc sysreset_gpio;
44 debug("%s: trying to force a power-on reset\n", __func__);
46 node = ofnode_path("/config");
47 if (!ofnode_valid(node)) {
48 debug("%s: no /config node?\n", __func__);
52 if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
53 &sysreset_gpio, GPIOD_IS_OUT)) {
54 debug("%s: could not find a /config/sysreset-gpio\n", __func__);
58 dm_gpio_set_value(&sysreset_gpio, 1);
61 void spl_board_init(void)
64 struct rk3399_cru *cru = rockchip_get_cru();
67 * The RK3399 resets only 'almost all logic' (see also in the TRM
68 * "3.9.4 Global software reset"), when issuing a software reset.
69 * This may cause issues during boot-up for some configurations of
70 * the application software stack.
72 * To work around this, we test whether the last reset reason was
73 * a power-on reset and (if not) issue an overtemp-reset to reset
76 * While this was previously fixed by modifying the various places
77 * that could generate a software reset (e.g. U-Boot's sysreset
78 * driver, the ATF or Linux), we now have it here to ensure that
79 * we no longer have to track this through the various components.
81 if (cru->glb_rst_st != 0)
82 rk3399_force_power_on_reset();
85 * Turning the eMMC and SPI back on (if disabled via the Qseven
86 * BIOS_ENABLE) signal is done through a always-on regulator).
88 ret = regulators_enable_boot_on(false);
90 debug("%s: Cannot enable boot on regulator\n", __func__);
92 preloader_console_init();
95 static void setup_macaddr(void)
97 #if CONFIG_IS_ENABLED(CMD_NET)
99 const char *cpuid = env_get("cpuid#");
100 u8 hash[SHA256_SUM_LEN];
101 int size = sizeof(hash);
104 /* Only generate a MAC address, if none is set in the environment */
105 if (env_get("ethaddr"))
109 debug("%s: could not retrieve 'cpuid#'\n", __func__);
113 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
115 debug("%s: failed to calculate SHA256\n", __func__);
119 /* Copy 6 bytes of the hash to base the MAC address on */
120 memcpy(mac_addr, hash, 6);
122 /* Make this a valid MAC address and set it */
123 mac_addr[0] &= 0xfe; /* clear multicast bit */
124 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
125 eth_env_set_enetaddr("ethaddr", mac_addr);
129 static void setup_serial(void)
131 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
132 const u32 cpuid_offset = 0x7;
133 const u32 cpuid_length = 0x10;
137 u8 cpuid[cpuid_length];
138 u8 low[cpuid_length/2], high[cpuid_length/2];
139 char cpuid_str[cpuid_length * 2 + 1];
141 char serialno_str[17];
143 /* retrieve the device */
144 ret = uclass_get_device_by_driver(UCLASS_MISC,
145 DM_GET_DRIVER(rockchip_efuse), &dev);
147 debug("%s: could not find efuse device\n", __func__);
151 /* read the cpu_id range from the efuses */
152 ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid));
154 debug("%s: reading cpuid from the efuses failed\n",
159 memset(cpuid_str, 0, sizeof(cpuid_str));
160 for (i = 0; i < 16; i++)
161 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
163 debug("cpuid: %s\n", cpuid_str);
166 * Mix the cpuid bytes using the same rules as in
167 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
169 for (i = 0; i < 8; i++) {
170 low[i] = cpuid[1 + (i << 1)];
171 high[i] = cpuid[i << 1];
174 serialno = crc32_no_comp(0, low, 8);
175 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
176 snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno);
178 env_set("cpuid#", cpuid_str);
179 env_set("serial#", serialno_str);
183 int misc_init_r(void)
191 #ifdef CONFIG_SERIAL_TAG
192 void get_board_serial(struct tag_serialnr *serialnr)
197 serial_string = env_get("serial#");
200 serial = simple_strtoull(serial_string, NULL, 16);
202 serialnr->high = (u32)(serial >> 32);
203 serialnr->low = (u32)(serial & 0xffffffff);
208 * Switch power at an external regulator (for our root hub).
210 * @param ctrl pointer to the xHCI controller
211 * @param port port number as in the control message (one-based)
212 * @param enable boolean indicating whether to enable or disable power
213 * @return returns 0 on success, an error-code on failure
215 static int board_usb_port_power_set(struct udevice *dev, int port,
218 #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
219 /* We start counting ports at 0, while USB counts from 1. */
220 int index = port - 1;
221 const char *regname = NULL;
222 struct udevice *regulator;
223 const char *prop = "tsd,usb-port-power";
226 debug("%s: ctrl '%s' port %d enable %s\n", __func__,
227 dev_read_name(dev), port, enable ? "true" : "false");
229 ret = dev_read_string_index(dev, prop, index, ®name);
231 debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
232 __func__, dev_read_name(dev), port, prop);
236 ret = regulator_get_by_platname(regname, ®ulator);
238 debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
239 __func__, dev_read_name(dev), port, regname);
243 regulator_set_enable(regulator, enable);
250 void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
252 struct udevice *dev = hub->pusb_dev->dev;
253 struct udevice *ctrl;
255 /* We are only interested in our root-hubs */
256 if (usb_hub_is_root_hub(dev) == false)
259 ctrl = usb_get_bus(dev);
261 debug("%s: could not retrieve ctrl for hub\n", __func__);
266 * To work around an incompatibility between the single-threaded
267 * USB stack in U-Boot and (a strange low-power mode of) the USB
268 * hub we have on-module, we need to delay powering on the hub
269 * until the first time the port is probed.
271 board_usb_port_power_set(ctrl, port, true);