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 int ret; 23 24 /* 25 * We need to call into regulators_enable_boot_on() again, as the call 26 * during SPL may have not included all regulators. 27 */ 28 ret = regulators_enable_boot_on(false); 29 if (ret) 30 debug("%s: Cannot enable boot on regulator\n", __func__); 31 32 return 0; 33 } 34 35 void spl_board_init(void) 36 { 37 preloader_console_init(); 38 } 39 40 static void setup_macaddr(void) 41 { 42 #if CONFIG_IS_ENABLED(CMD_NET) 43 int ret; 44 const char *cpuid = env_get("cpuid#"); 45 u8 hash[SHA256_SUM_LEN]; 46 int size = sizeof(hash); 47 u8 mac_addr[6]; 48 49 /* Only generate a MAC address, if none is set in the environment */ 50 if (env_get("ethaddr")) 51 return; 52 53 if (!cpuid) { 54 debug("%s: could not retrieve 'cpuid#'\n", __func__); 55 return; 56 } 57 58 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 59 if (ret) { 60 debug("%s: failed to calculate SHA256\n", __func__); 61 return; 62 } 63 64 /* Copy 6 bytes of the hash to base the MAC address on */ 65 memcpy(mac_addr, hash, 6); 66 67 /* Make this a valid MAC address and set it */ 68 mac_addr[0] &= 0xfe; /* clear multicast bit */ 69 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 70 eth_env_set_enetaddr("ethaddr", mac_addr); 71 #endif 72 } 73 74 static void setup_serial(void) 75 { 76 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 77 const u32 cpuid_offset = 0x7; 78 const u32 cpuid_length = 0x10; 79 80 struct udevice *dev; 81 int ret, i; 82 u8 cpuid[cpuid_length]; 83 u8 low[cpuid_length/2], high[cpuid_length/2]; 84 char cpuid_str[cpuid_length * 2 + 1]; 85 u64 serialno; 86 char serialno_str[17]; 87 88 /* retrieve the device */ 89 ret = uclass_get_device_by_driver(UCLASS_MISC, 90 DM_GET_DRIVER(rockchip_efuse), &dev); 91 if (ret) { 92 debug("%s: could not find efuse device\n", __func__); 93 return; 94 } 95 96 /* read the cpu_id range from the efuses */ 97 ret = misc_read(dev, cpuid_offset, &cpuid, sizeof(cpuid)); 98 if (ret) { 99 debug("%s: reading cpuid from the efuses failed\n", 100 __func__); 101 return; 102 } 103 104 memset(cpuid_str, 0, sizeof(cpuid_str)); 105 for (i = 0; i < 16; i++) 106 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 107 108 debug("cpuid: %s\n", cpuid_str); 109 110 /* 111 * Mix the cpuid bytes using the same rules as in 112 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 113 */ 114 for (i = 0; i < 8; i++) { 115 low[i] = cpuid[1 + (i << 1)]; 116 high[i] = cpuid[i << 1]; 117 } 118 119 serialno = crc32_no_comp(0, low, 8); 120 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 121 snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno); 122 123 env_set("cpuid#", cpuid_str); 124 env_set("serial#", serialno_str); 125 #endif 126 } 127 128 int misc_init_r(void) 129 { 130 setup_serial(); 131 setup_macaddr(); 132 133 return 0; 134 } 135 136 #ifdef CONFIG_SERIAL_TAG 137 void get_board_serial(struct tag_serialnr *serialnr) 138 { 139 char *serial_string; 140 u64 serial = 0; 141 142 serial_string = env_get("serial#"); 143 144 if (serial_string) 145 serial = simple_strtoull(serial_string, NULL, 16); 146 147 serialnr->high = (u32)(serial >> 32); 148 serialnr->low = (u32)(serial & 0xffffffff); 149 } 150 #endif 151