1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 2a13110a9SKlaus Goger /* 3a13110a9SKlaus Goger * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH 4a13110a9SKlaus Goger */ 5fb740646SPhilipp Tomsich 6a13110a9SKlaus Goger #include <common.h> 7a13110a9SKlaus Goger #include <dm.h> 89925f1dbSAlex Kiernan #include <environment.h> 9e92e5803SPhilipp Tomsich #include <misc.h> 10614539d4SPhilipp Tomsich #include <spl.h> 11aa41220fSJakob Unterwurzacher #include <syscon.h> 12614539d4SPhilipp Tomsich #include <usb.h> 13a13110a9SKlaus Goger #include <dm/pinctrl.h> 14a13110a9SKlaus Goger #include <dm/uclass-internal.h> 15aa41220fSJakob Unterwurzacher #include <asm/io.h> 16ae0d33a7SPhilipp Tomsich #include <asm/gpio.h> 179415b9a7SPhilipp Tomsich #include <asm/setup.h> 18ae0d33a7SPhilipp Tomsich #include <asm/arch/clock.h> 19ae0d33a7SPhilipp Tomsich #include <asm/arch/cru_rk3399.h> 20aa41220fSJakob Unterwurzacher #include <asm/arch/hardware.h> 21aa41220fSJakob Unterwurzacher #include <asm/arch/grf_rk3399.h> 22a13110a9SKlaus Goger #include <asm/arch/periph.h> 23a13110a9SKlaus Goger #include <power/regulator.h> 24e92e5803SPhilipp Tomsich #include <u-boot/sha256.h> 25e92e5803SPhilipp Tomsich 26a13110a9SKlaus Goger int board_init(void) 27a13110a9SKlaus Goger { 28a13110a9SKlaus Goger int ret; 29a13110a9SKlaus Goger 30a13110a9SKlaus Goger /* 310b5e7aabSPhilipp Tomsich * We need to call into regulators_enable_boot_on() again, as the call 320b5e7aabSPhilipp Tomsich * during SPL may have not included all regulators. 33a13110a9SKlaus Goger */ 340b5e7aabSPhilipp Tomsich ret = regulators_enable_boot_on(false); 35a13110a9SKlaus Goger if (ret) 360b5e7aabSPhilipp Tomsich debug("%s: Cannot enable boot on regulator\n", __func__); 37a13110a9SKlaus Goger 38a13110a9SKlaus Goger return 0; 39a13110a9SKlaus Goger } 40a13110a9SKlaus Goger 41ae0d33a7SPhilipp Tomsich static void rk3399_force_power_on_reset(void) 42ae0d33a7SPhilipp Tomsich { 43ae0d33a7SPhilipp Tomsich ofnode node; 44ae0d33a7SPhilipp Tomsich struct gpio_desc sysreset_gpio; 45ae0d33a7SPhilipp Tomsich 46ae0d33a7SPhilipp Tomsich debug("%s: trying to force a power-on reset\n", __func__); 47ae0d33a7SPhilipp Tomsich 48ae0d33a7SPhilipp Tomsich node = ofnode_path("/config"); 49ae0d33a7SPhilipp Tomsich if (!ofnode_valid(node)) { 50ae0d33a7SPhilipp Tomsich debug("%s: no /config node?\n", __func__); 51ae0d33a7SPhilipp Tomsich return; 52ae0d33a7SPhilipp Tomsich } 53ae0d33a7SPhilipp Tomsich 54ae0d33a7SPhilipp Tomsich if (gpio_request_by_name_nodev(node, "sysreset-gpio", 0, 55ae0d33a7SPhilipp Tomsich &sysreset_gpio, GPIOD_IS_OUT)) { 56ae0d33a7SPhilipp Tomsich debug("%s: could not find a /config/sysreset-gpio\n", __func__); 57ae0d33a7SPhilipp Tomsich return; 58ae0d33a7SPhilipp Tomsich } 59ae0d33a7SPhilipp Tomsich 60ae0d33a7SPhilipp Tomsich dm_gpio_set_value(&sysreset_gpio, 1); 61ae0d33a7SPhilipp Tomsich } 62ae0d33a7SPhilipp Tomsich 63fb740646SPhilipp Tomsich void spl_board_init(void) 64fb740646SPhilipp Tomsich { 65482cf223SPhilipp Tomsich int ret; 66ae0d33a7SPhilipp Tomsich struct rk3399_cru *cru = rockchip_get_cru(); 67ae0d33a7SPhilipp Tomsich 68ae0d33a7SPhilipp Tomsich /* 69ae0d33a7SPhilipp Tomsich * The RK3399 resets only 'almost all logic' (see also in the TRM 70ae0d33a7SPhilipp Tomsich * "3.9.4 Global software reset"), when issuing a software reset. 71ae0d33a7SPhilipp Tomsich * This may cause issues during boot-up for some configurations of 72ae0d33a7SPhilipp Tomsich * the application software stack. 73ae0d33a7SPhilipp Tomsich * 74ae0d33a7SPhilipp Tomsich * To work around this, we test whether the last reset reason was 75ae0d33a7SPhilipp Tomsich * a power-on reset and (if not) issue an overtemp-reset to reset 76ae0d33a7SPhilipp Tomsich * the entire module. 77ae0d33a7SPhilipp Tomsich * 78ae0d33a7SPhilipp Tomsich * While this was previously fixed by modifying the various places 79ae0d33a7SPhilipp Tomsich * that could generate a software reset (e.g. U-Boot's sysreset 80ae0d33a7SPhilipp Tomsich * driver, the ATF or Linux), we now have it here to ensure that 81ae0d33a7SPhilipp Tomsich * we no longer have to track this through the various components. 82ae0d33a7SPhilipp Tomsich */ 83ae0d33a7SPhilipp Tomsich if (cru->glb_rst_st != 0) 84ae0d33a7SPhilipp Tomsich rk3399_force_power_on_reset(); 85482cf223SPhilipp Tomsich 86482cf223SPhilipp Tomsich /* 87482cf223SPhilipp Tomsich * Turning the eMMC and SPI back on (if disabled via the Qseven 88482cf223SPhilipp Tomsich * BIOS_ENABLE) signal is done through a always-on regulator). 89482cf223SPhilipp Tomsich */ 90482cf223SPhilipp Tomsich ret = regulators_enable_boot_on(false); 91482cf223SPhilipp Tomsich if (ret) 92482cf223SPhilipp Tomsich debug("%s: Cannot enable boot on regulator\n", __func__); 93482cf223SPhilipp Tomsich 94fb740646SPhilipp Tomsich preloader_console_init(); 95fb740646SPhilipp Tomsich } 96fb740646SPhilipp Tomsich 978adc9d18SKlaus Goger static void setup_macaddr(void) 988adc9d18SKlaus Goger { 998adc9d18SKlaus Goger #if CONFIG_IS_ENABLED(CMD_NET) 1008adc9d18SKlaus Goger int ret; 10100caae6dSSimon Glass const char *cpuid = env_get("cpuid#"); 1028adc9d18SKlaus Goger u8 hash[SHA256_SUM_LEN]; 1038adc9d18SKlaus Goger int size = sizeof(hash); 1048adc9d18SKlaus Goger u8 mac_addr[6]; 1058adc9d18SKlaus Goger 1068adc9d18SKlaus Goger /* Only generate a MAC address, if none is set in the environment */ 10700caae6dSSimon Glass if (env_get("ethaddr")) 1088adc9d18SKlaus Goger return; 1098adc9d18SKlaus Goger 1108adc9d18SKlaus Goger if (!cpuid) { 1118adc9d18SKlaus Goger debug("%s: could not retrieve 'cpuid#'\n", __func__); 1128adc9d18SKlaus Goger return; 1138adc9d18SKlaus Goger } 1148adc9d18SKlaus Goger 1158adc9d18SKlaus Goger ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 1168adc9d18SKlaus Goger if (ret) { 1178adc9d18SKlaus Goger debug("%s: failed to calculate SHA256\n", __func__); 1188adc9d18SKlaus Goger return; 1198adc9d18SKlaus Goger } 1208adc9d18SKlaus Goger 1218adc9d18SKlaus Goger /* Copy 6 bytes of the hash to base the MAC address on */ 1228adc9d18SKlaus Goger memcpy(mac_addr, hash, 6); 1238adc9d18SKlaus Goger 1248adc9d18SKlaus Goger /* Make this a valid MAC address and set it */ 1258adc9d18SKlaus Goger mac_addr[0] &= 0xfe; /* clear multicast bit */ 1268adc9d18SKlaus Goger mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 127fd1e959eSSimon Glass eth_env_set_enetaddr("ethaddr", mac_addr); 1288adc9d18SKlaus Goger #endif 1298adc9d18SKlaus Goger } 1308adc9d18SKlaus Goger 1319415b9a7SPhilipp Tomsich static void setup_serial(void) 1329415b9a7SPhilipp Tomsich { 1339415b9a7SPhilipp Tomsich #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 13426722335SKever Yang const u32 cpuid_offset = 0x7; 13526722335SKever Yang const u32 cpuid_length = 0x10; 13626722335SKever Yang 1379415b9a7SPhilipp Tomsich struct udevice *dev; 1389415b9a7SPhilipp Tomsich int ret, i; 13926722335SKever Yang u8 cpuid[cpuid_length]; 14026722335SKever Yang u8 low[cpuid_length/2], high[cpuid_length/2]; 14126722335SKever Yang char cpuid_str[cpuid_length * 2 + 1]; 1429415b9a7SPhilipp Tomsich u64 serialno; 14360d7c509SKlaus Goger char serialno_str[17]; 1449415b9a7SPhilipp Tomsich 1458adc9d18SKlaus Goger /* retrieve the device */ 1468adc9d18SKlaus Goger ret = uclass_get_device_by_driver(UCLASS_MISC, 1478adc9d18SKlaus Goger DM_GET_DRIVER(rockchip_efuse), &dev); 1489415b9a7SPhilipp Tomsich if (ret) { 1499415b9a7SPhilipp Tomsich debug("%s: could not find efuse device\n", __func__); 1509415b9a7SPhilipp Tomsich return; 1519415b9a7SPhilipp Tomsich } 1529415b9a7SPhilipp Tomsich 1539415b9a7SPhilipp Tomsich /* read the cpu_id range from the efuses */ 15426722335SKever Yang ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid)); 1559415b9a7SPhilipp Tomsich if (ret) { 1569415b9a7SPhilipp Tomsich debug("%s: reading cpuid from the efuses failed\n", 1579415b9a7SPhilipp Tomsich __func__); 1589415b9a7SPhilipp Tomsich return; 1599415b9a7SPhilipp Tomsich } 1609415b9a7SPhilipp Tomsich 1619415b9a7SPhilipp Tomsich memset(cpuid_str, 0, sizeof(cpuid_str)); 1629415b9a7SPhilipp Tomsich for (i = 0; i < 16; i++) 1639415b9a7SPhilipp Tomsich sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 1649415b9a7SPhilipp Tomsich 1659415b9a7SPhilipp Tomsich debug("cpuid: %s\n", cpuid_str); 1669415b9a7SPhilipp Tomsich 1679415b9a7SPhilipp Tomsich /* 1689415b9a7SPhilipp Tomsich * Mix the cpuid bytes using the same rules as in 1699415b9a7SPhilipp Tomsich * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 1709415b9a7SPhilipp Tomsich */ 1719415b9a7SPhilipp Tomsich for (i = 0; i < 8; i++) { 1729415b9a7SPhilipp Tomsich low[i] = cpuid[1 + (i << 1)]; 1739415b9a7SPhilipp Tomsich high[i] = cpuid[i << 1]; 1749415b9a7SPhilipp Tomsich } 1759415b9a7SPhilipp Tomsich 1769415b9a7SPhilipp Tomsich serialno = crc32_no_comp(0, low, 8); 1779415b9a7SPhilipp Tomsich serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 178b32b1bd1SJakob Unterwurzacher snprintf(serialno_str, sizeof(serialno_str), "%016llx", serialno); 1799415b9a7SPhilipp Tomsich 180382bee57SSimon Glass env_set("cpuid#", cpuid_str); 181382bee57SSimon Glass env_set("serial#", serialno_str); 1829415b9a7SPhilipp Tomsich #endif 1839415b9a7SPhilipp Tomsich } 1849415b9a7SPhilipp Tomsich 185aa41220fSJakob Unterwurzacher static void setup_iodomain(void) 186aa41220fSJakob Unterwurzacher { 187aa41220fSJakob Unterwurzacher const u32 GRF_IO_VSEL_GPIO4CD_SHIFT = 3; 188aa41220fSJakob Unterwurzacher struct rk3399_grf_regs *grf = 189aa41220fSJakob Unterwurzacher syscon_get_first_range(ROCKCHIP_SYSCON_GRF); 190aa41220fSJakob Unterwurzacher 191aa41220fSJakob Unterwurzacher /* 192aa41220fSJakob Unterwurzacher * Set bit 3 in GRF_IO_VSEL so PCIE_RST# works (pin GPIO4_C6). 193aa41220fSJakob Unterwurzacher * Linux assumes that PCIE_RST# works out of the box as it probes 194aa41220fSJakob Unterwurzacher * PCIe before loading the iodomain driver. 195aa41220fSJakob Unterwurzacher */ 196aa41220fSJakob Unterwurzacher rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_GPIO4CD_SHIFT); 197aa41220fSJakob Unterwurzacher } 198aa41220fSJakob Unterwurzacher 1999415b9a7SPhilipp Tomsich int misc_init_r(void) 2009415b9a7SPhilipp Tomsich { 2019415b9a7SPhilipp Tomsich setup_serial(); 2028adc9d18SKlaus Goger setup_macaddr(); 203aa41220fSJakob Unterwurzacher setup_iodomain(); 2049415b9a7SPhilipp Tomsich 2059415b9a7SPhilipp Tomsich return 0; 2069415b9a7SPhilipp Tomsich } 2079415b9a7SPhilipp Tomsich 2089415b9a7SPhilipp Tomsich #ifdef CONFIG_SERIAL_TAG 2099415b9a7SPhilipp Tomsich void get_board_serial(struct tag_serialnr *serialnr) 2109415b9a7SPhilipp Tomsich { 2119415b9a7SPhilipp Tomsich char *serial_string; 2129415b9a7SPhilipp Tomsich u64 serial = 0; 2139415b9a7SPhilipp Tomsich 21400caae6dSSimon Glass serial_string = env_get("serial#"); 2159415b9a7SPhilipp Tomsich 2169415b9a7SPhilipp Tomsich if (serial_string) 2179415b9a7SPhilipp Tomsich serial = simple_strtoull(serial_string, NULL, 16); 2189415b9a7SPhilipp Tomsich 2199415b9a7SPhilipp Tomsich serialnr->high = (u32)(serial >> 32); 2209415b9a7SPhilipp Tomsich serialnr->low = (u32)(serial & 0xffffffff); 2219415b9a7SPhilipp Tomsich } 2229415b9a7SPhilipp Tomsich #endif 223614539d4SPhilipp Tomsich 224614539d4SPhilipp Tomsich /** 225614539d4SPhilipp Tomsich * Switch power at an external regulator (for our root hub). 226614539d4SPhilipp Tomsich * 227614539d4SPhilipp Tomsich * @param ctrl pointer to the xHCI controller 228614539d4SPhilipp Tomsich * @param port port number as in the control message (one-based) 229614539d4SPhilipp Tomsich * @param enable boolean indicating whether to enable or disable power 230614539d4SPhilipp Tomsich * @return returns 0 on success, an error-code on failure 231614539d4SPhilipp Tomsich */ 232614539d4SPhilipp Tomsich static int board_usb_port_power_set(struct udevice *dev, int port, 233614539d4SPhilipp Tomsich bool enable) 234614539d4SPhilipp Tomsich { 235614539d4SPhilipp Tomsich #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR) 236614539d4SPhilipp Tomsich /* We start counting ports at 0, while USB counts from 1. */ 237614539d4SPhilipp Tomsich int index = port - 1; 238614539d4SPhilipp Tomsich const char *regname = NULL; 239614539d4SPhilipp Tomsich struct udevice *regulator; 240614539d4SPhilipp Tomsich const char *prop = "tsd,usb-port-power"; 241614539d4SPhilipp Tomsich int ret; 242614539d4SPhilipp Tomsich 243614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d enable %s\n", __func__, 244614539d4SPhilipp Tomsich dev_read_name(dev), port, enable ? "true" : "false"); 245614539d4SPhilipp Tomsich 246614539d4SPhilipp Tomsich ret = dev_read_string_index(dev, prop, index, ®name); 247614539d4SPhilipp Tomsich if (ret < 0) { 248614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d: no entry in '%s'\n", 249614539d4SPhilipp Tomsich __func__, dev_read_name(dev), port, prop); 250614539d4SPhilipp Tomsich return ret; 251614539d4SPhilipp Tomsich } 252614539d4SPhilipp Tomsich 253614539d4SPhilipp Tomsich ret = regulator_get_by_platname(regname, ®ulator); 254614539d4SPhilipp Tomsich if (ret) { 255614539d4SPhilipp Tomsich debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n", 256614539d4SPhilipp Tomsich __func__, dev_read_name(dev), port, regname); 257614539d4SPhilipp Tomsich return ret; 258614539d4SPhilipp Tomsich } 259614539d4SPhilipp Tomsich 260614539d4SPhilipp Tomsich regulator_set_enable(regulator, enable); 261614539d4SPhilipp Tomsich return 0; 262614539d4SPhilipp Tomsich #else 263614539d4SPhilipp Tomsich return -ENOTSUPP; 264614539d4SPhilipp Tomsich #endif 265614539d4SPhilipp Tomsich } 266614539d4SPhilipp Tomsich 267614539d4SPhilipp Tomsich void usb_hub_reset_devices(struct usb_hub_device *hub, int port) 268614539d4SPhilipp Tomsich { 269614539d4SPhilipp Tomsich struct udevice *dev = hub->pusb_dev->dev; 270614539d4SPhilipp Tomsich struct udevice *ctrl; 271614539d4SPhilipp Tomsich 272614539d4SPhilipp Tomsich /* We are only interested in our root-hubs */ 273614539d4SPhilipp Tomsich if (usb_hub_is_root_hub(dev) == false) 274614539d4SPhilipp Tomsich return; 275614539d4SPhilipp Tomsich 276614539d4SPhilipp Tomsich ctrl = usb_get_bus(dev); 277614539d4SPhilipp Tomsich if (!ctrl) { 278614539d4SPhilipp Tomsich debug("%s: could not retrieve ctrl for hub\n", __func__); 279614539d4SPhilipp Tomsich return; 280614539d4SPhilipp Tomsich } 281614539d4SPhilipp Tomsich 282614539d4SPhilipp Tomsich /* 283614539d4SPhilipp Tomsich * To work around an incompatibility between the single-threaded 284614539d4SPhilipp Tomsich * USB stack in U-Boot and (a strange low-power mode of) the USB 285614539d4SPhilipp Tomsich * hub we have on-module, we need to delay powering on the hub 286614539d4SPhilipp Tomsich * until the first time the port is probed. 287614539d4SPhilipp Tomsich */ 288614539d4SPhilipp Tomsich board_usb_port_power_set(ctrl, port, true); 289614539d4SPhilipp Tomsich } 290