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>
32 * We need to call into regulators_enable_boot_on() again, as the call
33 * during SPL may have not included all regulators.
35 ret = regulators_enable_boot_on(false);
37 debug("%s: Cannot enable boot on regulator\n", __func__);
42 static void rk3399_force_power_on_reset(void)
45 struct gpio_desc sysreset_gpio;
47 debug("%s: trying to force a power-on reset\n", __func__);
49 node = ofnode_path("/config");
50 if (!ofnode_valid(node)) {
51 debug("%s: no /config node?\n", __func__);
55 if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0,
56 &sysreset_gpio, GPIOD_IS_OUT)) {
57 debug("%s: could not find a /config/sysreset-gpio\n", __func__);
61 dm_gpio_set_value(&sysreset_gpio, 1);
64 void spl_board_init(void)
67 struct rk3399_cru *cru = rockchip_get_cru();
70 * The RK3399 resets only 'almost all logic' (see also in the TRM
71 * "3.9.4 Global software reset"), when issuing a software reset.
72 * This may cause issues during boot-up for some configurations of
73 * the application software stack.
75 * To work around this, we test whether the last reset reason was
76 * a power-on reset and (if not) issue an overtemp-reset to reset
79 * While this was previously fixed by modifying the various places
80 * that could generate a software reset (e.g. U-Boot's sysreset
81 * driver, the ATF or Linux), we now have it here to ensure that
82 * we no longer have to track this through the various components.
84 if (cru->glb_rst_st != 0)
85 rk3399_force_power_on_reset();
88 * Turning the eMMC and SPI back on (if disabled via the Qseven
89 * BIOS_ENABLE) signal is done through a always-on regulator).
91 ret = regulators_enable_boot_on(false);
93 debug("%s: Cannot enable boot on regulator\n", __func__);
95 preloader_console_init();
98 static void setup_macaddr(void)
100 #if CONFIG_IS_ENABLED(CMD_NET)
102 const char *cpuid = env_get("cpuid#");
103 u8 hash[SHA256_SUM_LEN];
104 int size = sizeof(hash);
107 /* Only generate a MAC address, if none is set in the environment */
108 if (env_get("ethaddr"))
112 debug("%s: could not retrieve 'cpuid#'\n", __func__);
116 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size);
118 debug("%s: failed to calculate SHA256\n", __func__);
122 /* Copy 6 bytes of the hash to base the MAC address on */
123 memcpy(mac_addr, hash, 6);
125 /* Make this a valid MAC address and set it */
126 mac_addr[0] &= 0xfe; /* clear multicast bit */
127 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
128 eth_env_set_enetaddr("ethaddr", mac_addr);
132 static void setup_serial(void)
134 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE)
135 const u32 cpuid_offset = 0x7;
136 const u32 cpuid_length = 0x10;
140 u8 cpuid[cpuid_length];
141 u8 low[cpuid_length/2], high[cpuid_length/2];
142 char cpuid_str[cpuid_length * 2 + 1];
144 char serialno_str[17];
146 /* retrieve the device */
147 ret = uclass_get_device_by_driver(UCLASS_MISC,
148 DM_GET_DRIVER(rockchip_efuse), &dev);
150 debug("%s: could not find efuse device\n", __func__);
154 /* read the cpu_id range from the efuses */
155 ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid));
157 debug("%s: reading cpuid from the efuses failed\n",
162 memset(cpuid_str, 0, sizeof(cpuid_str));
163 for (i = 0; i < 16; i++)
164 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]);
166 debug("cpuid: %s\n", cpuid_str);
169 * Mix the cpuid bytes using the same rules as in
170 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c
172 for (i = 0; i < 8; i++) {
173 low[i] = cpuid[1 + (i << 1)];
174 high[i] = cpuid[i << 1];
177 serialno = crc32_no_comp(0, low, 8);
178 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32;
179 snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno);
181 env_set("cpuid#", cpuid_str);
182 env_set("serial#", serialno_str);
186 static void setup_iodomain(void)
188 const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3;
189 struct rk3399_grf_regs *grf =
190 syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
193 * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6).
194 * Linux assumes that PCIE_RST# works out of the box as it probes
195 * PCIe before loading the iodomain driver.
197 rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT);
200 int misc_init_r(void)
209 #ifdef CONFIG_SERIAL_TAG
210 void get_board_serial(struct tag_serialnr *serialnr)
215 serial_string = env_get("serial#");
218 serial = simple_strtoull(serial_string, NULL, 16);
220 serialnr->high = (u32)(serial >> 32);
221 serialnr->low = (u32)(serial & 0xffffffff);
226 * Switch power at an external regulator (for our root hub).
228 * @param ctrl pointer to the xHCI controller
229 * @param port port number as in the control message (one-based)
230 * @param enable boolean indicating whether to enable or disable power
231 * @return returns 0 on success, an error-code on failure
233 static int board_usb_port_power_set(struct udevice *dev, int port,
236 #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
237 /* We start counting ports at 0, while USB counts from 1. */
238 int index = port - 1;
239 const char *regname = NULL;
240 struct udevice *regulator;
241 const char *prop = "tsd,usb-port-power";
244 debug("%s: ctrl '%s' port %d enable %s\n", __func__,
245 dev_read_name(dev), port, enable ? "true" : "false");
247 ret = dev_read_string_index(dev, prop, index, ®name);
249 debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
250 __func__, dev_read_name(dev), port, prop);
254 ret = regulator_get_by_platname(regname, ®ulator);
256 debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
257 __func__, dev_read_name(dev), port, regname);
261 regulator_set_enable(regulator, enable);
268 void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
270 struct udevice *dev = hub->pusb_dev->dev;
271 struct udevice *ctrl;
273 /* We are only interested in our root-hubs */
274 if (usb_hub_is_root_hub(dev) == false)
277 ctrl = usb_get_bus(dev);
279 debug("%s: could not retrieve ctrl for hub\n", __func__);
284 * To work around an incompatibility between the single-threaded
285 * USB stack in U-Boot and (a strange low-power mode of) the USB
286 * hub we have on-module, we need to delay powering on the hub
287 * until the first time the port is probed.
289 board_usb_port_power_set(ctrl, port, true);