board/bf518f-ezbrd/bf518f-ezbrd.c

   1 /*
   2  * U-boot - main board file
   3  *
   4  * Copyright (c) 2008-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <command.h>
  12 #include <net.h>
  13 #include <netdev.h>
  14 #include <spi.h>
  15 #include <asm/blackfin.h>
  16 #include <asm/net.h>
  17 #include <asm/mach-common/bits/otp.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 int checkboard(void)
  22 {
  23         printf("Board: ADI BF518F EZ-Board board\n");
  24         printf("       Support: http://blackfin.uclinux.org/\n");
  25         return 0;
  26 }
  27
  28 phys_size_t initdram(int board_type)
  29 {
  30         gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
  31         gd->bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
  32         return gd->bd->bi_memsize;
  33 }
  34
  35 #if defined(CONFIG_BFIN_MAC)
  36 static void board_init_enetaddr(uchar *mac_addr)
  37 {
  38         bool valid_mac = false;
  39
  40 #if 0
  41         /* the MAC is stored in OTP memory page 0xDF */
  42         uint32_t ret;
  43         uint64_t otp_mac;
  44
  45         ret = bfrom_OtpRead(0xDF, OTP_LOWER_HALF, &otp_mac);
  46         if (!(ret & OTP_MASTER_ERROR)) {
  47                 uchar *otp_mac_p = (uchar *)&otp_mac;
  48
  49                 for (ret = 0; ret < 6; ++ret)
  50                         mac_addr[ret] = otp_mac_p[5 - ret];
  51
  52                 if (is_valid_ether_addr(mac_addr))
  53                         valid_mac = true;
  54         }
  55 #endif
  56
  57         if (!valid_mac) {
  58                 puts("Warning: Generating 'random' MAC address\n");
  59                 bfin_gen_rand_mac(mac_addr);
  60         }
  61
  62         eth_setenv_enetaddr("ethaddr", mac_addr);
  63 }
  64
  65 int board_eth_init(bd_t *bis)
  66 {
  67         static bool switch_is_alive = false;
  68         int ret;
  69
  70         if (!switch_is_alive) {
  71                 struct spi_slave *slave = spi_setup_slave(0, 1, 5000000, SPI_MODE_3);
  72                 if (slave) {
  73                         if (!spi_claim_bus(slave)) {
  74                                 unsigned char dout[3] = { 2, 1, 1, };
  75                                 unsigned char din[3];
  76                                 ret = spi_xfer(slave, sizeof(dout) * 8, dout, din, SPI_XFER_BEGIN | SPI_XFER_END);
  77                                 if (!ret)
  78                                         switch_is_alive = true;
  79                                 spi_release_bus(slave);
  80                         }
  81                         spi_free_slave(slave);
  82                 }
  83         }
  84
  85         if (switch_is_alive)
  86                 return bfin_EMAC_initialize(bis);
  87         else
  88                 return -1;
  89 }
  90 #endif
  91
  92 int misc_init_r(void)
  93 {
  94 #ifdef CONFIG_BFIN_MAC
  95         uchar enetaddr[6];
  96         if (!eth_getenv_enetaddr("ethaddr", enetaddr))
  97                 board_init_enetaddr(enetaddr);
  98 #endif
  99
 100         return 0;
 101 }