board/samtec/vining_fpga/socfpga.c

   1 /*
   2  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.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                 setenv("unit_serial", "invalid");
  73                 setenv("unit_ident", "VINing-xxxx-STD");
  74                 setenv("hostname", "vining-invalid");
  75                 return 0;
  76         }
  77
  78         /* If 'unit_serial' is already set, do nothing. */
  79         if (!getenv("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                 setenv("unit_serial", str);
  86         }
  87
  88         if (!getenv("unit_ident")) {
  89                 memset(str, 0, sizeof(str));
  90                 memcpy(str, &data[0x2e], 18);
  91                 setenv("unit_ident", str);
  92         }
  93
  94         /* Set ethernet address from EEPROM. */
  95         if (!getenv("ethaddr") && is_valid_ethaddr(&data[0x62]))
  96                 eth_setenv_enetaddr("ethaddr", &data[0x62]);
  97
  98         return 0;
  99 }
 100 #endif