2 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
4 * SPDX-License-Identifier: GPL-2.0+
9 #include <environment.h>
14 #include <dm/pinctrl.h>
15 #include <dm/uclass-internal.h>
18 #include <asm/setup.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/cru_rk3399.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/grf_rk3399.h>
23 #include <asm/arch/periph.h>
24 #include <power/regulator.h>
25 #include <u-boot/sha256.h>
27 DECLARE_GLOBAL_DATA_PTR;
34 * We need to call into regulators_enable_boot_on() again, as the call
35 * during SPL may have not included all regulators.
37 ret = regulators_enable_boot_on(false);
39 debug("%s: Cannot enable boot on regulator\n", __func__);
44 static void rk3399_force_power_on_reset(void)
47 struct gpio_desc sysreset_gpio;
49 debug("%s: trying to force a power-on reset\n", __func__);
51 node = ofnode_path("/config");
52 if (!ofnode_valid(node)) {
53 debug("%s: no /config node?\n", __func__);
57 if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
58 &sysreset_gpio, GPIOD_IS_OUT)) {
59 debug("%s: could not find a /config/sysreset-gpio\n", __func__);
63 dm_gpio_set_value(&sysreset_gpio, 1);
66 void spl_board_init(void)
69 struct rk3399_cru *cru = rockchip_get_cru();
72 * The RK3399 resets only 'almost all logic' (see also in the TRM
73 * "3.9.4 Global software reset"), when issuing a software reset.
74 * This may cause issues during boot-up for some configurations of
75 * the application software stack.
77 * To work around this, we test whether the last reset reason was
78 * a power-on reset and (if not) issue an overtemp-reset to reset
81 * While this was previously fixed by modifying the various places
82 * that could generate a software reset (e.g. U-Boot's sysreset
83 * driver, the ATF or Linux), we now have it here to ensure that
84 * we no longer have to track this through the various components.
86 if (cru->glb_rst_st != 0)
87 rk3399_force_power_on_reset();
90 * Turning the eMMC and SPI back on (if disabled via the Qseven
91 * BIOS_ENABLE) signal is done through a always-on regulator).
93 ret = regulators_enable_boot_on(false);
95 debug("%s: Cannot enable boot on regulator\n", __func__);
97 preloader_console_init();
100 static void setup_macaddr(void)
102 #if CONFIG_IS_ENABLED(CMD_NET)
104 const char *cpuid = env_get("cpuid#");
105 u8 hash[SHA256_SUM_LEN];
106 int size = sizeof(hash);
109 /* Only generate a MAC address, if none is set in the environment */
110 if (env_get("ethaddr"))
114 debug("%s: could not retrieve 'cpuid#'\n", __func__);
118 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
120 debug("%s: failed to calculate SHA256\n", __func__);
124 /* Copy 6 bytes of the hash to base the MAC address on */
125 memcpy(mac_addr, hash, 6);
127 /* Make this a valid MAC address and set it */
128 mac_addr[0] &= 0xfe; /* clear multicast bit */
129 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
130 eth_env_set_enetaddr("ethaddr", mac_addr);
134 static void setup_serial(void)
136 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
137 const u32 cpuid_offset = 0x7;
138 const u32 cpuid_length = 0x10;
142 u8 cpuid[cpuid_length];
143 u8 low[cpuid_length/2], high[cpuid_length/2];
144 char cpuid_str[cpuid_length * 2 + 1];
146 char serialno_str[17];
148 /* retrieve the device */
149 ret = uclass_get_device_by_driver(UCLASS_MISC,
150 DM_GET_DRIVER(rockchip_efuse), &dev);
152 debug("%s: could not find efuse device\n", __func__);
156 /* read the cpu_id range from the efuses */
157 ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid));
159 debug("%s: reading cpuid from the efuses failed\n",
164 memset(cpuid_str, 0, sizeof(cpuid_str));
165 for (i = 0; i < 16; i++)
166 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
168 debug("cpuid: %s\n", cpuid_str);
171 * Mix the cpuid bytes using the same rules as in
172 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
174 for (i = 0; i < 8; i++) {
175 low[i] = cpuid[1 + (i << 1)];
176 high[i] = cpuid[i << 1];
179 serialno = crc32_no_comp(0, low, 8);
180 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
181 snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
183 env_set("cpuid#", cpuid_str);
184 env_set("serial#", serialno_str);
188 static void setup_iodomain(void)
190 const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
191 struct rk3399_grf_regs *grf =
192 syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
195 * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6).
196 * Linux assumes that PCIE_RST# works out of the box as it probes
197 * PCIe before loading the iodomain driver.
199 rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT);
202 int misc_init_r(void)
211 #ifdef CONFIG_SERIAL_TAG
212 void get_board_serial(struct tag_serialnr *serialnr)
217 serial_string = env_get("serial#");
220 serial = simple_strtoull(serial_string, NULL, 16);
222 serialnr->high = (u32)(serial >> 32);
223 serialnr->low = (u32)(serial & 0xffffffff);
228 * Switch power at an external regulator (for our root hub).
230 * @param ctrl pointer to the xHCI controller
231 * @param port port number as in the control message (one-based)
232 * @param enable boolean indicating whether to enable or disable power
233 * @return returns 0 on success, an error-code on failure
235 static int board_usb_port_power_set(struct udevice *dev, int port,
238 #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
239 /* We start counting ports at 0, while USB counts from 1. */
240 int index = port - 1;
241 const char *regname = NULL;
242 struct udevice *regulator;
243 const char *prop = "tsd,usb-port-power";
246 debug("%s: ctrl '%s' port %d enable %s\n", __func__,
247 dev_read_name(dev), port, enable ? "true" : "false");
249 ret = dev_read_string_index(dev, prop, index, ®name);
251 debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
252 __func__, dev_read_name(dev), port, prop);
256 ret = regulator_get_by_platname(regname, ®ulator);
258 debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
259 __func__, dev_read_name(dev), port, regname);
263 regulator_set_enable(regulator, enable);
270 void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
272 struct udevice *dev = hub->pusb_dev->dev;
273 struct udevice *ctrl;
275 /* We are only interested in our root-hubs */
276 if (usb_hub_is_root_hub(dev) == false)
279 ctrl = usb_get_bus(dev);
281 debug("%s: could not retrieve ctrl for hub\n", __func__);
286 * To work around an incompatibility between the single-threaded
287 * USB stack in U-Boot and (a strange low-power mode of) the USB
288 * hub we have on-module, we need to delay powering on the hub
289 * until the first time the port is probed.
291 board_usb_port_power_set(ctrl, port, true);