1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
4  */
5 
6 #include <common.h>
7 #include <environment.h>
8 #include <asm/arch/reset_manager.h>
9 #include <asm/io.h>
10 #include <asm/gpio.h>
11 #include <i2c.h>
12 
13 DECLARE_GLOBAL_DATA_PTR;
14 
15 /*
16  * Miscellaneous platform dependent initialisations
17  */
18 int board_late_init(void)
19 {
20 	const unsigned int phy_nrst_gpio = 0;
21 	const unsigned int usb_nrst_gpio = 35;
22 	int ret;
23 
24 	status_led_set(1, CONFIG_LED_STATUS_ON);
25 	status_led_set(2, CONFIG_LED_STATUS_ON);
26 
27 	/* Address of boot parameters for ATAG (if ATAG is used) */
28 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
29 
30 	ret = gpio_request(phy_nrst_gpio, "phy_nrst_gpio");
31 	if (!ret)
32 		gpio_direction_output(phy_nrst_gpio, 1);
33 	else
34 		printf("Cannot remove PHY from reset!\n");
35 
36 	ret = gpio_request(usb_nrst_gpio, "usb_nrst_gpio");
37 	if (!ret)
38 		gpio_direction_output(usb_nrst_gpio, 1);
39 	else
40 		printf("Cannot remove USB from reset!\n");
41 
42 	mdelay(50);
43 
44 	return 0;
45 }
46 
47 #ifndef CONFIG_SPL_BUILD
48 int misc_init_r(void)
49 {
50 	uchar data[128];
51 	char str[32];
52 	u32 serial;
53 	int ret;
54 
55 	/* EEPROM is at bus 0. */
56 	ret = i2c_set_bus_num(0);
57 	if (ret) {
58 		puts("Cannot select EEPROM I2C bus.\n");
59 		return 0;
60 	}
61 
62 	/* EEPROM is at address 0x50. */
63 	ret = eeprom_read(0x50, 0, data, sizeof(data));
64 	if (ret) {
65 		puts("Cannot read I2C EEPROM.\n");
66 		return 0;
67 	}
68 
69 	/* Check EEPROM signature. */
70 	if (!(data[0] == 0xa5 && data[1] == 0x5a)) {
71 		puts("Invalid I2C EEPROM signature.\n");
72 		env_set("unit_serial", "invalid");
73 		env_set("unit_ident", "VINing-xxxx-STD");
74 		env_set("hostname", "vining-invalid");
75 		return 0;
76 	}
77 
78 	/* If 'unit_serial' is already set, do nothing. */
79 	if (!env_get("unit_serial")) {
80 		/* This field is Big Endian ! */
81 		serial = (data[0x54] << 24) | (data[0x55] << 16) |
82 			 (data[0x56] << 8) | (data[0x57] << 0);
83 		memset(str, 0, sizeof(str));
84 		sprintf(str, "%07i", serial);
85 		env_set("unit_serial", str);
86 	}
87 
88 	if (!env_get("unit_ident")) {
89 		memset(str, 0, sizeof(str));
90 		memcpy(str, &data[0x2e], 18);
91 		env_set("unit_ident", str);
92 	}
93 
94 	/* Set ethernet address from EEPROM. */
95 	if (!env_get("ethaddr") && is_valid_ethaddr(&data[0x62]))
96 		eth_env_set_enetaddr("ethaddr", &data[0x62]);
97 
98 	return 0;
99 }
100 #endif
101