1a13110a9SKlaus Goger /* 2a13110a9SKlaus Goger * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH 3a13110a9SKlaus Goger * 4a13110a9SKlaus Goger * SPDX-License-Identifier: GPL-2.0+ 5a13110a9SKlaus Goger */ 6fb740646SPhilipp Tomsich 7a13110a9SKlaus Goger #include <common.h> 8a13110a9SKlaus Goger #include <dm.h> 9e92e5803SPhilipp Tomsich #include <misc.h> 10614539d4SPhilipp Tomsich #include <spl.h> 11614539d4SPhilipp Tomsich #include <usb.h> 12a13110a9SKlaus Goger #include <dm/pinctrl.h> 13a13110a9SKlaus Goger #include <dm/uclass-internal.h> 14*ae0d33a7SPhilipp Tomsich #include <asm/gpio.h> 159415b9a7SPhilipp Tomsich #include <asm/setup.h> 16*ae0d33a7SPhilipp Tomsich #include <asm/arch/clock.h> 17*ae0d33a7SPhilipp Tomsich #include <asm/arch/cru_rk3399.h> 18a13110a9SKlaus Goger #include <asm/arch/periph.h> 19a13110a9SKlaus Goger #include <power/regulator.h> 20e92e5803SPhilipp Tomsich #include <u-boot/sha256.h> 21e92e5803SPhilipp Tomsich 22a13110a9SKlaus Goger DECLARE_GLOBAL_DATA_PTR; 23a13110a9SKlaus Goger 24a13110a9SKlaus Goger int board_init(void) 25a13110a9SKlaus Goger { 26a13110a9SKlaus Goger int ret; 27a13110a9SKlaus Goger 28a13110a9SKlaus Goger /* 290b5e7aabSPhilipp Tomsich * We need to call into regulators_enable_boot_on() again, as the call 300b5e7aabSPhilipp Tomsich * during SPL may have not included all regulators. 31a13110a9SKlaus Goger */ 320b5e7aabSPhilipp Tomsich ret = regulators_enable_boot_on(false); 33a13110a9SKlaus Goger if (ret) 340b5e7aabSPhilipp Tomsich debug("%s: Cannot enable boot on regulator\n", __func__); 35a13110a9SKlaus Goger 36a13110a9SKlaus Goger return 0; 37a13110a9SKlaus Goger } 38a13110a9SKlaus Goger 39*ae0d33a7SPhilipp Tomsich static void rk3399_force_power_on_reset(void) 40*ae0d33a7SPhilipp Tomsich { 41*ae0d33a7SPhilipp Tomsich ofnode node; 42*ae0d33a7SPhilipp Tomsich struct gpio_desc sysreset_gpio; 43*ae0d33a7SPhilipp Tomsich 44*ae0d33a7SPhilipp Tomsich debug("%s: trying to force a power-on reset\n", __func__); 45*ae0d33a7SPhilipp Tomsich 46*ae0d33a7SPhilipp Tomsich node = ofnode_path("/config"); 47*ae0d33a7SPhilipp Tomsich if (!ofnode_valid(node)) { 48*ae0d33a7SPhilipp Tomsich debug("%s: no /config node?\n", __func__); 49*ae0d33a7SPhilipp Tomsich return; 50*ae0d33a7SPhilipp Tomsich } 51*ae0d33a7SPhilipp Tomsich 52*ae0d33a7SPhilipp Tomsich if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0, 53*ae0d33a7SPhilipp Tomsich &sysreset_gpio, GPIOD_IS_OUT)) { 54*ae0d33a7SPhilipp Tomsich debug("%s: could not find a /config/sysreset-gpio\n", __func__); 55*ae0d33a7SPhilipp Tomsich return; 56*ae0d33a7SPhilipp Tomsich } 57*ae0d33a7SPhilipp Tomsich 58*ae0d33a7SPhilipp Tomsich dm_gpio_set_value(&sysreset_gpio, 1); 59*ae0d33a7SPhilipp Tomsich } 60*ae0d33a7SPhilipp Tomsich 61fb740646SPhilipp Tomsich void spl_board_init(void) 62fb740646SPhilipp Tomsich { 63482cf223SPhilipp Tomsich int ret; 64*ae0d33a7SPhilipp Tomsich struct rk3399_cru *cru = rockchip_get_cru(); 65*ae0d33a7SPhilipp Tomsich 66*ae0d33a7SPhilipp Tomsich /* 67*ae0d33a7SPhilipp Tomsich * The RK3399 resets only 'almost all logic' (see also in the TRM 68*ae0d33a7SPhilipp Tomsich * "3.9.4 Global software reset"), when issuing a software reset. 69*ae0d33a7SPhilipp Tomsich * This may cause issues during boot-up for some configurations of 70*ae0d33a7SPhilipp Tomsich * the application software stack. 71*ae0d33a7SPhilipp Tomsich * 72*ae0d33a7SPhilipp Tomsich * To work around this, we test whether the last reset reason was 73*ae0d33a7SPhilipp Tomsich * a power-on reset and (if not) issue an overtemp-reset to reset 74*ae0d33a7SPhilipp Tomsich * the entire module. 75*ae0d33a7SPhilipp Tomsich * 76*ae0d33a7SPhilipp Tomsich * While this was previously fixed by modifying the various places 77*ae0d33a7SPhilipp Tomsich * that could generate a software reset (e.g. U-Boot's sysreset 78*ae0d33a7SPhilipp Tomsich * driver, the ATF or Linux), we now have it here to ensure that 79*ae0d33a7SPhilipp Tomsich * we no longer have to track this through the various components. 80*ae0d33a7SPhilipp Tomsich */ 81*ae0d33a7SPhilipp Tomsich if (cru->glb_rst_st != 0) 82*ae0d33a7SPhilipp Tomsich rk3399_force_power_on_reset(); 83482cf223SPhilipp Tomsich 84482cf223SPhilipp Tomsich /* 85482cf223SPhilipp Tomsich * Turning the eMMC and SPI back on (if disabled via the Qseven 86482cf223SPhilipp Tomsich * BIOS_ENABLE) signal is done through a always-on regulator). 87482cf223SPhilipp Tomsich */ 88482cf223SPhilipp Tomsich ret = regulators_enable_boot_on(false); 89482cf223SPhilipp Tomsich if (ret) 90482cf223SPhilipp Tomsich debug("%s: Cannot enable boot on regulator\n", __func__); 91482cf223SPhilipp Tomsich 92fb740646SPhilipp Tomsich preloader_console_init(); 93fb740646SPhilipp Tomsich } 94fb740646SPhilipp Tomsich 958adc9d18SKlaus Goger static void setup_macaddr(void) 968adc9d18SKlaus Goger { 978adc9d18SKlaus Goger #if CONFIG_IS_ENABLED(CMD_NET) 988adc9d18SKlaus Goger int ret; 9900caae6dSSimon Glass const char *cpuid = env_get("cpuid#"); 1008adc9d18SKlaus Goger u8 hash[SHA256_SUM_LEN]; 1018adc9d18SKlaus Goger int size = sizeof(hash); 1028adc9d18SKlaus Goger u8 mac_addr[6]; 1038adc9d18SKlaus Goger 1048adc9d18SKlaus Goger /* Only generate a MAC address, if none is set in the environment */ 10500caae6dSSimon Glass if (env_get("ethaddr")) 1068adc9d18SKlaus Goger return; 1078adc9d18SKlaus Goger 1088adc9d18SKlaus Goger if (!cpuid) { 1098adc9d18SKlaus Goger debug("%s: could not retrieve 'cpuid#'\n", __func__); 1108adc9d18SKlaus Goger return; 1118adc9d18SKlaus Goger } 1128adc9d18SKlaus Goger 1138adc9d18SKlaus Goger ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 1148adc9d18SKlaus Goger if (ret) { 1158adc9d18SKlaus Goger debug("%s: failed to calculate SHA256\n", __func__); 1168adc9d18SKlaus Goger return; 1178adc9d18SKlaus Goger } 1188adc9d18SKlaus Goger 1198adc9d18SKlaus Goger /* Copy 6 bytes of the hash to base the MAC address on */ 1208adc9d18SKlaus Goger memcpy(mac_addr, hash, 6); 1218adc9d18SKlaus Goger 1228adc9d18SKlaus Goger /* Make this a valid MAC address and set it */ 1238adc9d18SKlaus Goger mac_addr[0] &= 0xfe; /* clear multicast bit */ 1248adc9d18SKlaus Goger mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 125fd1e959eSSimon Glass eth_env_set_enetaddr("ethaddr", mac_addr); 1268adc9d18SKlaus Goger #endif 1278adc9d18SKlaus Goger } 1288adc9d18SKlaus Goger 1299415b9a7SPhilipp Tomsich static void setup_serial(void) 1309415b9a7SPhilipp Tomsich { 1319415b9a7SPhilipp Tomsich #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 13226722335SKever Yang const u32 cpuid_offset = 0x7; 13326722335SKever Yang const u32 cpuid_length = 0x10; 13426722335SKever Yang 1359415b9a7SPhilipp Tomsich struct udevice *dev; 1369415b9a7SPhilipp Tomsich int ret, i; 13726722335SKever Yang u8 cpuid[cpuid_length]; 13826722335SKever Yang u8 low[cpuid_length/2], high[cpuid_length/2]; 13926722335SKever Yang char cpuid_str[cpuid_length * 2 + 1]; 1409415b9a7SPhilipp Tomsich u64 serialno; 14160d7c509SKlaus Goger char serialno_str[17]; 1429415b9a7SPhilipp Tomsich 1438adc9d18SKlaus Goger /* retrieve the device */ 1448adc9d18SKlaus Goger ret = uclass_get_device_by_driver(UCLASS_MISC, 1458adc9d18SKlaus Goger DM_GET_DRIVER(rockchip_efuse), &dev); 1469415b9a7SPhilipp Tomsich if (ret) { 1479415b9a7SPhilipp Tomsich debug("%s: could not find efuse device\n", __func__); 1489415b9a7SPhilipp Tomsich return; 1499415b9a7SPhilipp Tomsich } 1509415b9a7SPhilipp Tomsich 1519415b9a7SPhilipp Tomsich /* read the cpu_id range from the efuses */ 15226722335SKever Yang ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid)); 1539415b9a7SPhilipp Tomsich if (ret) { 1549415b9a7SPhilipp Tomsich debug("%s: reading cpuid from the efuses failed\n", 1559415b9a7SPhilipp Tomsich __func__); 1569415b9a7SPhilipp Tomsich return; 1579415b9a7SPhilipp Tomsich } 1589415b9a7SPhilipp Tomsich 1599415b9a7SPhilipp Tomsich memset(cpuid_str, 0, sizeof(cpuid_str)); 1609415b9a7SPhilipp Tomsich for (i = 0; i < 16; i++) 1619415b9a7SPhilipp Tomsich sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 1629415b9a7SPhilipp Tomsich 1639415b9a7SPhilipp Tomsich debug("cpuid: %s\n", cpuid_str); 1649415b9a7SPhilipp Tomsich 1659415b9a7SPhilipp Tomsich /* 1669415b9a7SPhilipp Tomsich * Mix the cpuid bytes using the same rules as in 1679415b9a7SPhilipp Tomsich * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 1689415b9a7SPhilipp Tomsich */ 1699415b9a7SPhilipp Tomsich for (i = 0; i < 8; i++) { 1709415b9a7SPhilipp Tomsich low[i] = cpuid[1 + (i << 1)]; 1719415b9a7SPhilipp Tomsich high[i] = cpuid[i << 1]; 1729415b9a7SPhilipp Tomsich } 1739415b9a7SPhilipp Tomsich 1749415b9a7SPhilipp Tomsich serialno = crc32_no_comp(0, low, 8); 1759415b9a7SPhilipp Tomsich serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 1769415b9a7SPhilipp Tomsich snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno); 1779415b9a7SPhilipp Tomsich 178382bee57SSimon Glass env_set("cpuid#", cpuid_str); 179382bee57SSimon Glass env_set("serial#", serialno_str); 1809415b9a7SPhilipp Tomsich #endif 1819415b9a7SPhilipp Tomsich } 1829415b9a7SPhilipp Tomsich 1839415b9a7SPhilipp Tomsich int misc_init_r(void) 1849415b9a7SPhilipp Tomsich { 1859415b9a7SPhilipp Tomsich setup_serial(); 1868adc9d18SKlaus Goger setup_macaddr(); 1879415b9a7SPhilipp Tomsich 1889415b9a7SPhilipp Tomsich return 0; 1899415b9a7SPhilipp Tomsich } 1909415b9a7SPhilipp Tomsich 1919415b9a7SPhilipp Tomsich #ifdef CONFIG_SERIAL_TAG 1929415b9a7SPhilipp Tomsich void get_board_serial(struct tag_serialnr *serialnr) 1939415b9a7SPhilipp Tomsich { 1949415b9a7SPhilipp Tomsich char *serial_string; 1959415b9a7SPhilipp Tomsich u64 serial = 0; 1969415b9a7SPhilipp Tomsich 19700caae6dSSimon Glass serial_string = env_get("serial#"); 1989415b9a7SPhilipp Tomsich 1999415b9a7SPhilipp Tomsich if (serial_string) 2009415b9a7SPhilipp Tomsich serial = simple_strtoull(serial_string, NULL, 16); 2019415b9a7SPhilipp Tomsich 2029415b9a7SPhilipp Tomsich serialnr->high = (u32)(serial >> 32); 2039415b9a7SPhilipp Tomsich serialnr->low = (u32)(serial & 0xffffffff); 2049415b9a7SPhilipp Tomsich } 2059415b9a7SPhilipp Tomsich #endif 206614539d4SPhilipp Tomsich 207614539d4SPhilipp Tomsich /** 208614539d4SPhilipp Tomsich * Switch power at an external regulator (for our root hub). 209614539d4SPhilipp Tomsich * 210614539d4SPhilipp Tomsich * @param ctrl pointer to the xHCI controller 211614539d4SPhilipp Tomsich * @param port port number as in the control message (one-based) 212614539d4SPhilipp Tomsich * @param enable boolean indicating whether to enable or disable power 213614539d4SPhilipp Tomsich * @return returns 0 on success, an error-code on failure 214614539d4SPhilipp Tomsich */ 215614539d4SPhilipp Tomsich static int board_usb_port_power_set(struct udevice *dev, int port, 216614539d4SPhilipp Tomsich bool enable) 217614539d4SPhilipp Tomsich { 218614539d4SPhilipp Tomsich #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR) 219614539d4SPhilipp Tomsich /* We start counting ports at 0, while USB counts from 1. */ 220614539d4SPhilipp Tomsich int index = port - 1; 221614539d4SPhilipp Tomsich const char *regname = NULL; 222614539d4SPhilipp Tomsich struct udevice *regulator; 223614539d4SPhilipp Tomsich const char *prop = "tsd,usb-port-power"; 224614539d4SPhilipp Tomsich int ret; 225614539d4SPhilipp Tomsich 226614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d enable %s\n", __func__, 227614539d4SPhilipp Tomsich dev_read_name(dev), port, enable ? "true" : "false"); 228614539d4SPhilipp Tomsich 229614539d4SPhilipp Tomsich ret = dev_read_string_index(dev, prop, index, ®name); 230614539d4SPhilipp Tomsich if (ret < 0) { 231614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d: no entry in '%s'\n", 232614539d4SPhilipp Tomsich __func__, dev_read_name(dev), port, prop); 233614539d4SPhilipp Tomsich return ret; 234614539d4SPhilipp Tomsich } 235614539d4SPhilipp Tomsich 236614539d4SPhilipp Tomsich ret = regulator_get_by_platname(regname, ®ulator); 237614539d4SPhilipp Tomsich if (ret) { 238614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n", 239614539d4SPhilipp Tomsich __func__, dev_read_name(dev), port, regname); 240614539d4SPhilipp Tomsich return ret; 241614539d4SPhilipp Tomsich } 242614539d4SPhilipp Tomsich 243614539d4SPhilipp Tomsich regulator_set_enable(regulator, enable); 244614539d4SPhilipp Tomsich return 0; 245614539d4SPhilipp Tomsich #else 246614539d4SPhilipp Tomsich return -ENOTSUPP; 247614539d4SPhilipp Tomsich #endif 248614539d4SPhilipp Tomsich } 249614539d4SPhilipp Tomsich 250614539d4SPhilipp Tomsich void usb_hub_reset_devices(struct usb_hub_device *hub, int port) 251614539d4SPhilipp Tomsich { 252614539d4SPhilipp Tomsich struct udevice *dev = hub->pusb_dev->dev; 253614539d4SPhilipp Tomsich struct udevice *ctrl; 254614539d4SPhilipp Tomsich 255614539d4SPhilipp Tomsich /* We are only interested in our root-hubs */ 256614539d4SPhilipp Tomsich if (usb_hub_is_root_hub(dev) == false) 257614539d4SPhilipp Tomsich return; 258614539d4SPhilipp Tomsich 259614539d4SPhilipp Tomsich ctrl = usb_get_bus(dev); 260614539d4SPhilipp Tomsich if (!ctrl) { 261614539d4SPhilipp Tomsich debug("%s: could not retrieve ctrl for hub\n", __func__); 262614539d4SPhilipp Tomsich return; 263614539d4SPhilipp Tomsich } 264614539d4SPhilipp Tomsich 265614539d4SPhilipp Tomsich /* 266614539d4SPhilipp Tomsich * To work around an incompatibility between the single-threaded 267614539d4SPhilipp Tomsich * USB stack in U-Boot and (a strange low-power mode of) the USB 268614539d4SPhilipp Tomsich * hub we have on-module, we need to delay powering on the hub 269614539d4SPhilipp Tomsich * until the first time the port is probed. 270614539d4SPhilipp Tomsich */ 271614539d4SPhilipp Tomsich board_usb_port_power_set(ctrl, port, true); 272614539d4SPhilipp Tomsich } 273