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