LXR uboot/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/portmux.h>
  18#include <asm/mach-common/bits/otp.h>
  19#include <asm/sdh.h>
  20
  21DECLARE_GLOBAL_DATA_PTR;
  22
  23int checkboard(void)
  24{
  25        printf("Board: ADI BF518F EZ-Board board\n");
  26        printf("       Support: http://blackfin.uclinux.org/\n");
  27        return 0;
  28}
  29
  30#if defined(CONFIG_BFIN_MAC)
  31static void board_init_enetaddr(uchar *mac_addr)
  32{
  33        bool valid_mac = false;
  34
  35#if 0
  36        /* the MAC is stored in OTP memory page 0xDF */
  37        uint32_t ret;
  38        uint64_t otp_mac;
  39
  40        ret = bfrom_OtpRead(0xDF, OTP_LOWER_HALF, &otp_mac);
  41        if (!(ret & OTP_MASTER_ERROR)) {
  42                uchar *otp_mac_p = (uchar *)&otp_mac;
  43
  44                for (ret = 0; ret < 6; ++ret)
  45                        mac_addr[ret] = otp_mac_p[5 - ret];
  46
  47                if (is_valid_ether_addr(mac_addr))
  48                        valid_mac = true;
  49        }
  50#endif
  51
  52        if (!valid_mac) {
  53                puts("Warning: Generating 'random' MAC address\n");
  54                bfin_gen_rand_mac(mac_addr);
  55        }
  56
  57        eth_setenv_enetaddr("ethaddr", mac_addr);
  58}
  59
  60#define KSZ_MAX_HZ    5000000
  61
  62#define KSZ_WRITE     0x02
  63#define KSZ_READ      0x03
  64
  65#define KSZ_REG_CHID  0x00      /* Register 0: Chip ID0 */
  66#define KSZ_REG_STPID 0x01      /* Register 1: Chip ID1 / Start Switch */
  67#define KSZ_REG_GC9   0x0b      /* Register 11: Global Control 9 */
  68#define KSZ_REG_P3C0  0x30      /* Register 48: Port 3 Control 0 */
  69
  70static int ksz8893m_transfer(struct spi_slave *slave, uchar dir, uchar reg,
  71                             uchar data, uchar result[3])
  72{
  73        unsigned char dout[3] = { dir, reg, data, };
  74        return spi_xfer(slave, sizeof(dout) * 8, dout, result, SPI_XFER_BEGIN | SPI_XFER_END);
  75}
  76
  77static int ksz8893m_reg_set(struct spi_slave *slave, uchar reg, uchar data)
  78{
  79        unsigned char din[3];
  80        return ksz8893m_transfer(slave, KSZ_WRITE, reg, data, din);
  81}
  82
  83static int ksz8893m_reg_read(struct spi_slave *slave, uchar reg)
  84{
  85        int ret;
  86        unsigned char din[3];
  87        ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
  88        return ret ? ret : din[2];
  89}
  90
  91static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask)
  92{
  93        return ksz8893m_reg_set(slave, reg, ksz8893m_reg_read(slave, reg) & mask);
  94}
  95
  96static int ksz8893m_reset(struct spi_slave *slave)
  97{
  98        int ret = 0;
  99
 100        /* Disable STPID mode */
 101        ret |= ksz8893m_reg_clear(slave, KSZ_REG_GC9, 0x01);
 102
 103        /* Disable VLAN tag insert on Port3 */
 104        ret |= ksz8893m_reg_clear(slave, KSZ_REG_P3C0, 0x04);
 105
 106        /* Start switch */
 107        ret |= ksz8893m_reg_set(slave, KSZ_REG_STPID, 0x01);
 108
 109        return ret;
 110}
 111
 112int board_eth_init(bd_t *bis)
 113{
 114        static bool switch_is_alive = false, phy_is_ksz = true;
 115        int ret;
 116
 117        if (!switch_is_alive) {
 118                struct spi_slave *slave = spi_setup_slave(0, 1, KSZ_MAX_HZ, SPI_MODE_3);
 119                if (slave) {
 120                        if (!spi_claim_bus(slave)) {
 121                                phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88);
 122                                ret = phy_is_ksz ? ksz8893m_reset(slave) : 0;
 123                                switch_is_alive = (ret == 0);
 124                                spi_release_bus(slave);
 125                        }
 126                        spi_free_slave(slave);
 127                }
 128        }
 129
 130        if (switch_is_alive)
 131                return bfin_EMAC_initialize(bis);
 132        else
 133                return -1;
 134}
 135#endif
 136
 137int misc_init_r(void)
 138{
 139#ifdef CONFIG_BFIN_MAC
 140        uchar enetaddr[6];
 141        if (!eth_getenv_enetaddr("ethaddr", enetaddr))
 142                board_init_enetaddr(enetaddr);
 143#endif
 144
 145        return 0;
 146}
 147
 148int board_early_init_f(void)
 149{
 150        /* connect async banks by default */
 151        const unsigned short pins[] = {
 152                P_AMS2, P_AMS3, 0,
 153        };
 154        return peripheral_request_list(pins, "async");
 155}
 156
 157#ifdef CONFIG_BFIN_SDH
 158int board_mmc_init(bd_t *bis)
 159{
 160        return bfin_mmc_init(bis);
 161}
 162#endif
 163