2 * U-boot - main board file
4 * Copyright (c) 2008-2009 Analog Devices Inc.
6 * Licensed under the GPL-2 or later.
15 #include <asm/blackfin.h>
17 #include <asm/portmux.h>
18 #include <asm/mach-common/bits/otp.h>
21 DECLARE_GLOBAL_DATA_PTR;
25 printf("Board: ADI BF518F EZ-Board board\n");
26 printf(" Support: http://blackfin.uclinux.org/\n");
30 #if defined(CONFIG_BFIN_MAC)
31 static void board_init_enetaddr(uchar *mac_addr)
33 bool valid_mac = false;
36 /* the MAC is stored in OTP memory page 0xDF */
40 ret = bfrom_OtpRead(0xDF, OTP_LOWER_HALF, &otp_mac);
41 if (!(ret & OTP_MASTER_ERROR)) {
42 uchar *otp_mac_p = (uchar *)&otp_mac;
44 for (ret = 0; ret < 6; ++ret)
45 mac_addr[ret] = otp_mac_p[5 - ret];
47 if (is_valid_ether_addr(mac_addr))
53 puts("Warning: Generating 'random' MAC address\n");
54 bfin_gen_rand_mac(mac_addr);
57 eth_setenv_enetaddr("ethaddr", mac_addr);
60 /* Only the first run of boards had a KSZ switch */
61 #if defined(CONFIG_BFIN_SPI) && __SILICON_REVISION__ == 0
62 # define KSZ_POSSIBLE 1
64 # define KSZ_POSSIBLE 0
67 #define KSZ_MAX_HZ 5000000
69 #define KSZ_WRITE 0x02
72 #define KSZ_REG_CHID 0x00 /* Register 0: Chip ID0 */
73 #define KSZ_REG_STPID 0x01 /* Register 1: Chip ID1 / Start Switch */
74 #define KSZ_REG_GC9 0x0b /* Register 11: Global Control 9 */
75 #define KSZ_REG_P3C0 0x30 /* Register 48: Port 3 Control 0 */
77 static int ksz8893m_transfer(struct spi_slave *slave, uchar dir, uchar reg,
78 uchar data, uchar result[3])
80 unsigned char dout[3] = { dir, reg, data, };
81 return spi_xfer(slave, sizeof(dout) * 8, dout, result, SPI_XFER_BEGIN | SPI_XFER_END);
84 static int ksz8893m_reg_set(struct spi_slave *slave, uchar reg, uchar data)
87 return ksz8893m_transfer(slave, KSZ_WRITE, reg, data, din);
90 static int ksz8893m_reg_read(struct spi_slave *slave, uchar reg)
94 ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
95 return ret ? ret : din[2];
98 static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask)
100 return ksz8893m_reg_set(slave, reg, ksz8893m_reg_read(slave, reg) & mask);
103 static int ksz8893m_reset(struct spi_slave *slave)
107 /* Disable STPID mode */
108 ret |= ksz8893m_reg_clear(slave, KSZ_REG_GC9, 0x01);
110 /* Disable VLAN tag insert on Port3 */
111 ret |= ksz8893m_reg_clear(slave, KSZ_REG_P3C0, 0x04);
114 ret |= ksz8893m_reg_set(slave, KSZ_REG_STPID, 0x01);
119 static bool board_ksz_init(void)
121 static bool switch_is_alive = false;
123 if (!switch_is_alive) {
124 struct spi_slave *slave = spi_setup_slave(0, 1, KSZ_MAX_HZ, SPI_MODE_3);
126 if (!spi_claim_bus(slave)) {
127 bool phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88);
128 int ret = phy_is_ksz ? ksz8893m_reset(slave) : 0;
129 switch_is_alive = (ret == 0);
130 spi_release_bus(slave);
132 spi_free_slave(slave);
136 return switch_is_alive;
139 int board_eth_init(bd_t *bis)
142 if (!board_ksz_init())
145 return bfin_EMAC_initialize(bis);
149 int misc_init_r(void)
151 #ifdef CONFIG_BFIN_MAC
153 if (!eth_getenv_enetaddr("ethaddr", enetaddr))
154 board_init_enetaddr(enetaddr);
160 int board_early_init_f(void)
162 /* connect async banks by default */
163 const unsigned short pins[] = {
166 return peripheral_request_list(pins, "async");
169 #ifdef CONFIG_BFIN_SDH
170 int board_mmc_init(bd_t *bis)
172 return bfin_mmc_init(bis);