1 /* 2 * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <misc.h> 10 #include <dm/pinctrl.h> 11 #include <dm/uclass-internal.h> 12 #include <asm/setup.h> 13 #include <asm/arch/periph.h> 14 #include <power/regulator.h> 15 #include <spl.h> 16 #include <u-boot/sha256.h> 17 18 DECLARE_GLOBAL_DATA_PTR; 19 20 int board_init(void) 21 { 22 struct udevice *pinctrl, *regulator; 23 int ret; 24 25 /* 26 * The PWM does not have decicated interrupt number in dts and can 27 * not get periph_id by pinctrl framework, so let's init them here. 28 * The PWM2 and PWM3 are for pwm regulators. 29 */ 30 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 31 if (ret) { 32 debug("%s: Cannot find pinctrl device\n", __func__); 33 goto out; 34 } 35 36 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); 37 if (ret) { 38 debug("%s PWM2 pinctrl init fail!\n", __func__); 39 goto out; 40 } 41 42 /* rk3399 need to init vdd_center to get the correct output voltage */ 43 ret = regulator_get_by_platname("vdd_center", ®ulator); 44 if (ret) 45 debug("%s: Cannot get vdd_center regulator\n", __func__); 46 47 ret = regulator_get_by_platname("vcc5v0_host", ®ulator); 48 if (ret) { 49 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); 50 goto out; 51 } 52 53 ret = regulator_set_enable(regulator, true); 54 if (ret) { 55 debug("%s vcc5v0-host-en set fail!\n", __func__); 56 goto out; 57 } 58 59 out: 60 return 0; 61 } 62 63 void spl_board_init(void) 64 { 65 preloader_console_init(); 66 } 67 68 static void setup_macaddr(void) 69 { 70 #if CONFIG_IS_ENABLED(CMD_NET) 71 int ret; 72 const char *cpuid = env_get("cpuid#"); 73 u8 hash[SHA256_SUM_LEN]; 74 int size = sizeof(hash); 75 u8 mac_addr[6]; 76 77 /* Only generate a MAC address, if none is set in the environment */ 78 if (env_get("ethaddr")) 79 return; 80 81 if (!cpuid) { 82 debug("%s: could not retrieve 'cpuid#'\n", __func__); 83 return; 84 } 85 86 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 87 if (ret) { 88 debug("%s: failed to calculate SHA256\n", __func__); 89 return; 90 } 91 92 /* Copy 6 bytes of the hash to base the MAC address on */ 93 memcpy(mac_addr, hash, 6); 94 95 /* Make this a valid MAC address and set it */ 96 mac_addr[0] &= 0xfe; /* clear multicast bit */ 97 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 98 eth_env_set_enetaddr("ethaddr", mac_addr); 99 #endif 100 } 101 102 static void setup_serial(void) 103 { 104 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 105 const u32 cpuid_offset = 0x7; 106 const u32 cpuid_length = 0x10; 107 108 struct udevice *dev; 109 int ret, i; 110 u8 cpuid[cpuid_length]; 111 u8 low[cpuid_length/2], high[cpuid_length/2]; 112 char cpuid_str[cpuid_length * 2 + 1]; 113 u64 serialno; 114 char serialno_str[17]; 115 116 /* retrieve the device */ 117 ret = uclass_get_device_by_driver(UCLASS_MISC, 118 DM_GET_DRIVER(rockchip_efuse), &dev); 119 if (ret) { 120 debug("%s: could not find efuse device\n", __func__); 121 return; 122 } 123 124 /* read the cpu_id range from the efuses */ 125 ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid)); 126 if (ret) { 127 debug("%s: reading cpuid from the efuses failed\n", 128 __func__); 129 return; 130 } 131 132 memset(cpuid_str, 0, sizeof(cpuid_str)); 133 for (i = 0; i < 16; i++) 134 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 135 136 debug("cpuid: %s\n", cpuid_str); 137 138 /* 139 * Mix the cpuid bytes using the same rules as in 140 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 141 */ 142 for (i = 0; i < 8; i++) { 143 low[i] = cpuid[1 + (i << 1)]; 144 high[i] = cpuid[i << 1]; 145 } 146 147 serialno = crc32_no_comp(0, low, 8); 148 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 149 snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno); 150 151 env_set("cpuid#", cpuid_str); 152 env_set("serial#", serialno_str); 153 #endif 154 } 155 156 int misc_init_r(void) 157 { 158 setup_serial(); 159 setup_macaddr(); 160 161 return 0; 162 } 163 164 #ifdef CONFIG_SERIAL_TAG 165 void get_board_serial(struct tag_serialnr *serialnr) 166 { 167 char *serial_string; 168 u64 serial = 0; 169 170 serial_string = env_get("serial#"); 171 172 if (serial_string) 173 serial = simple_strtoull(serial_string, NULL, 16); 174 175 serialnr->high = (u32)(serial >> 32); 176 serialnr->low = (u32)(serial & 0xffffffff); 177 } 178 #endif 179