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 <misc.h> 13 #include <asm/setup.h> 14 #include <asm/arch/periph.h> 15 #include <power/regulator.h> 16 #include <u-boot/sha256.h> 17 18 #define RK3399_CPUID_OFF 0x7 19 #define RK3399_CPUID_LEN 0x10 20 21 DECLARE_GLOBAL_DATA_PTR; 22 23 #define RK3399_CPUID_OFF 0x7 24 #define RK3399_CPUID_LEN 0x10 25 26 DECLARE_GLOBAL_DATA_PTR; 27 28 int board_init(void) 29 { 30 struct udevice *pinctrl, *regulator; 31 int ret; 32 33 /* 34 * The PWM does not have decicated interrupt number in dts and can 35 * not get periph_id by pinctrl framework, so let's init them here. 36 * The PWM2 and PWM3 are for pwm regulators. 37 */ 38 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 39 if (ret) { 40 debug("%s: Cannot find pinctrl device\n", __func__); 41 goto out; 42 } 43 44 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); 45 if (ret) { 46 debug("%s PWM2 pinctrl init fail!\n", __func__); 47 goto out; 48 } 49 50 /* rk3399 need to init vdd_center to get the correct output voltage */ 51 ret = regulator_get_by_platname("vdd_center", ®ulator); 52 if (ret) 53 debug("%s: Cannot get vdd_center regulator\n", __func__); 54 55 ret = regulator_get_by_platname("vcc5v0_host", ®ulator); 56 if (ret) { 57 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); 58 goto out; 59 } 60 61 ret = regulator_set_enable(regulator, true); 62 if (ret) { 63 debug("%s vcc5v0-host-en set fail!\n", __func__); 64 goto out; 65 } 66 67 out: 68 return 0; 69 } 70 71 static void setup_macaddr(void) 72 { 73 #if CONFIG_IS_ENABLED(CMD_NET) 74 int ret; 75 const char *cpuid = getenv("cpuid#"); 76 u8 hash[SHA256_SUM_LEN]; 77 int size = sizeof(hash); 78 u8 mac_addr[6]; 79 80 /* Only generate a MAC address, if none is set in the environment */ 81 if (getenv("ethaddr")) 82 return; 83 84 if (!cpuid) { 85 debug("%s: could not retrieve 'cpuid#'\n", __func__); 86 return; 87 } 88 89 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 90 if (ret) { 91 debug("%s: failed to calculate SHA256\n", __func__); 92 return; 93 } 94 95 /* Copy 6 bytes of the hash to base the MAC address on */ 96 memcpy(mac_addr, hash, 6); 97 98 /* Make this a valid MAC address and set it */ 99 mac_addr[0] &= 0xfe; /* clear multicast bit */ 100 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 101 eth_setenv_enetaddr("ethaddr", mac_addr); 102 #endif 103 104 return; 105 } 106 107 static void setup_serial(void) 108 { 109 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 110 struct udevice *dev; 111 int ret, i; 112 u8 cpuid[RK3399_CPUID_LEN]; 113 u8 low[RK3399_CPUID_LEN/2], high[RK3399_CPUID_LEN/2]; 114 char cpuid_str[RK3399_CPUID_LEN * 2 + 1]; 115 u64 serialno; 116 char serialno_str[16]; 117 118 /* retrieve the device */ 119 ret = uclass_get_device_by_driver(UCLASS_MISC, 120 DM_GET_DRIVER(rockchip_efuse), &dev); 121 if (ret) { 122 debug("%s: could not find efuse device\n", __func__); 123 return; 124 } 125 126 /* read the cpu_id range from the efuses */ 127 ret = misc_read(dev, RK3399_CPUID_OFF, &cpuid, sizeof(cpuid)); 128 if (ret) { 129 debug("%s: reading cpuid from the efuses failed\n", 130 __func__); 131 return; 132 } 133 134 memset(cpuid_str, 0, sizeof(cpuid_str)); 135 for (i = 0; i < 16; i++) 136 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 137 138 debug("cpuid: %s\n", cpuid_str); 139 140 /* 141 * Mix the cpuid bytes using the same rules as in 142 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 143 */ 144 for (i = 0; i < 8; i++) { 145 low[i] = cpuid[1 + (i << 1)]; 146 high[i] = cpuid[i << 1]; 147 } 148 149 serialno = crc32_no_comp(0, low, 8); 150 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 151 snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno); 152 153 setenv("cpuid#", cpuid_str); 154 setenv("serial#", serialno_str); 155 #endif 156 157 return; 158 } 159 160 int misc_init_r(void) 161 { 162 setup_serial(); 163 setup_macaddr(); 164 165 return 0; 166 } 167 168 #ifdef CONFIG_SERIAL_TAG 169 void get_board_serial(struct tag_serialnr *serialnr) 170 { 171 char *serial_string; 172 u64 serial = 0; 173 174 serial_string = getenv("serial#"); 175 176 if (serial_string) 177 serial = simple_strtoull(serial_string, NULL, 16); 178 179 serialnr->high = (u32)(serial >> 32); 180 serialnr->low = (u32)(serial & 0xffffffff); 181 } 182 #endif 183 184 int dram_init_banksize(void) 185 { 186 /* Reserve 0x200000 for ATF bl31 */ 187 gd->bd->bi_dram[0].start = 0x200000; 188 gd->bd->bi_dram[0].size = 0x7e000000; 189 190 return 0; 191 } 192