1 /* 2 * (C) Copyright 2016 Rockchip Electronics Co., Ltd 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 #include <usb.h> 17 #include <dwc3-uboot.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 #define RK3399_CPUID_OFF 0x7 22 #define RK3399_CPUID_LEN 0x10 23 24 int board_init(void) 25 { 26 struct udevice *pinctrl, *regulator; 27 int ret; 28 29 /* 30 * The PWM does not have decicated interrupt number in dts and can 31 * not get periph_id by pinctrl framework, so let's init them here. 32 * The PWM2 and PWM3 are for pwm regulators. 33 */ 34 ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl); 35 if (ret) { 36 debug("%s: Cannot find pinctrl device\n", __func__); 37 goto out; 38 } 39 40 /* Enable pwm0 for panel backlight */ 41 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM0); 42 if (ret) { 43 debug("%s PWM0 pinctrl init fail! (ret=%d)\n", __func__, ret); 44 goto out; 45 } 46 47 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM2); 48 if (ret) { 49 debug("%s PWM2 pinctrl init fail!\n", __func__); 50 goto out; 51 } 52 53 ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_PWM3); 54 if (ret) { 55 debug("%s PWM3 pinctrl init fail!\n", __func__); 56 goto out; 57 } 58 59 ret = regulators_enable_boot_on(false); 60 if (ret) 61 debug("%s: Cannot enable boot on regulator\n", __func__); 62 63 ret = regulator_get_by_platname("vcc5v0_host", ®ulator); 64 if (ret) { 65 debug("%s vcc5v0_host init fail! ret %d\n", __func__, ret); 66 goto out; 67 } 68 69 ret = regulator_set_enable(regulator, true); 70 if (ret) { 71 debug("%s vcc5v0-host-en set fail!\n", __func__); 72 goto out; 73 } 74 75 out: 76 return 0; 77 } 78 79 static void setup_macaddr(void) 80 { 81 #if CONFIG_IS_ENABLED(CMD_NET) 82 int ret; 83 const char *cpuid = env_get("cpuid#"); 84 u8 hash[SHA256_SUM_LEN]; 85 int size = sizeof(hash); 86 u8 mac_addr[6]; 87 88 /* Only generate a MAC address, if none is set in the environment */ 89 if (env_get("ethaddr")) 90 return; 91 92 if (!cpuid) { 93 debug("%s: could not retrieve 'cpuid#'\n", __func__); 94 return; 95 } 96 97 ret = hash_block("sha256", (void *)cpuid, strlen(cpuid), hash, &size); 98 if (ret) { 99 debug("%s: failed to calculate SHA256\n", __func__); 100 return; 101 } 102 103 /* Copy 6 bytes of the hash to base the MAC address on */ 104 memcpy(mac_addr, hash, 6); 105 106 /* Make this a valid MAC address and set it */ 107 mac_addr[0] &= 0xfe; /* clear multicast bit */ 108 mac_addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ 109 eth_env_set_enetaddr("ethaddr", mac_addr); 110 #endif 111 112 return; 113 } 114 115 static void setup_serial(void) 116 { 117 #if CONFIG_IS_ENABLED(ROCKCHIP_EFUSE) 118 struct udevice *dev; 119 int ret, i; 120 u8 cpuid[RK3399_CPUID_LEN]; 121 u8 low[RK3399_CPUID_LEN/2], high[RK3399_CPUID_LEN/2]; 122 char cpuid_str[RK3399_CPUID_LEN * 2 + 1]; 123 u64 serialno; 124 char serialno_str[16]; 125 126 /* retrieve the device */ 127 ret = uclass_get_device_by_driver(UCLASS_MISC, 128 DM_GET_DRIVER(rockchip_efuse), &dev); 129 if (ret) { 130 debug("%s: could not find efuse device\n", __func__); 131 return; 132 } 133 134 /* read the cpu_id range from the efuses */ 135 ret = misc_read(dev, RK3399_CPUID_OFF, &cpuid, sizeof(cpuid)); 136 if (ret) { 137 debug("%s: reading cpuid from the efuses failed\n", 138 __func__); 139 return; 140 } 141 142 memset(cpuid_str, 0, sizeof(cpuid_str)); 143 for (i = 0; i < 16; i++) 144 sprintf(&cpuid_str[i * 2], "%02x", cpuid[i]); 145 146 debug("cpuid: %s\n", cpuid_str); 147 148 /* 149 * Mix the cpuid bytes using the same rules as in 150 * ${linux}/drivers/soc/rockchip/rockchip-cpuinfo.c 151 */ 152 for (i = 0; i < 8; i++) { 153 low[i] = cpuid[1 + (i << 1)]; 154 high[i] = cpuid[i << 1]; 155 } 156 157 serialno = crc32_no_comp(0, low, 8); 158 serialno |= (u64)crc32_no_comp(serialno, high, 8) << 32; 159 snprintf(serialno_str, sizeof(serialno_str), "%llx", serialno); 160 161 env_set("cpuid#", cpuid_str); 162 env_set("serial#", serialno_str); 163 #endif 164 165 return; 166 } 167 168 int misc_init_r(void) 169 { 170 setup_serial(); 171 setup_macaddr(); 172 173 return 0; 174 } 175 176 #ifdef CONFIG_SERIAL_TAG 177 void get_board_serial(struct tag_serialnr *serialnr) 178 { 179 char *serial_string; 180 u64 serial = 0; 181 182 serial_string = env_get("serial#"); 183 184 if (serial_string) 185 serial = simple_strtoull(serial_string, NULL, 16); 186 187 serialnr->high = (u32)(serial >> 32); 188 serialnr->low = (u32)(serial & 0xffffffff); 189 } 190 #endif 191 192 #ifdef CONFIG_USB_DWC3 193 static struct dwc3_device dwc3_device_data = { 194 .maximum_speed = USB_SPEED_HIGH, 195 .base = 0xfe800000, 196 .dr_mode = USB_DR_MODE_PERIPHERAL, 197 .index = 0, 198 .dis_u2_susphy_quirk = 1, 199 }; 200 201 int usb_gadget_handle_interrupts(void) 202 { 203 dwc3_uboot_handle_interrupt(0); 204 return 0; 205 } 206 207 int board_usb_init(int index, enum usb_init_type init) 208 { 209 return dwc3_uboot_init(&dwc3_device_data); 210 } 211 #endif 212