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/*
* U-boot - main board file
*
* Copyright (c) 2008-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <config.h>
#include <command.h>
#include <net.h>
#include <netdev.h>
#include <spi.h>
#include <asm/blackfin.h>
#include <asm/net.h>
#include <asm/mach-common/bits/otp.h>
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
printf("Board: ADI BF518F EZ-Board board\n");
printf(" Support: http://blackfin.uclinux.org/\n");
return 0;
}
#if defined(CONFIG_BFIN_MAC)
static void board_init_enetaddr(uchar *mac_addr)
{
bool valid_mac = false;
#if 0
/* the MAC is stored in OTP memory page 0xDF */
uint32_t ret;
uint64_t otp_mac;
ret = bfrom_OtpRead(0xDF, OTP_LOWER_HALF, &otp_mac);
if (!(ret & OTP_MASTER_ERROR)) {
uchar *otp_mac_p = (uchar *)&otp_mac;
for (ret = 0; ret < 6; ++ret)
mac_addr[ret] = otp_mac_p[5 - ret];
if (is_valid_ether_addr(mac_addr))
valid_mac = true;
}
#endif
if (!valid_mac) {
puts("Warning: Generating 'random' MAC address\n");
bfin_gen_rand_mac(mac_addr);
}
eth_setenv_enetaddr("ethaddr", mac_addr);
}
#define KSZ_MAX_HZ 5000000
#define KSZ_WRITE 0x02
#define KSZ_READ 0x03
#define KSZ_REG_STPID 0x01 /* Register 1: Chip ID1 / Start Switch */
#define KSZ_REG_GC9 0x0b /* Register 11: Global Control 9 */
#define KSZ_REG_P3C0 0x30 /* Register 48: Port 3 Control 0 */
static int ksz8893m_transfer(struct spi_slave *slave, uchar dir, uchar reg,
uchar data, uchar result[3])
{
unsigned char dout[3] = { dir, reg, data, };
return spi_xfer(slave, sizeof(dout) * 8, dout, result, SPI_XFER_BEGIN | SPI_XFER_END);
}
static int ksz8893m_reg_set(struct spi_slave *slave, uchar reg, uchar data)
{
unsigned char din[3];
return ksz8893m_transfer(slave, KSZ_WRITE, reg, data, din);
}
static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask)
{
int ret = 0;
unsigned char din[3];
ret |= ksz8893m_transfer(slave, KSZ_READ, reg, 0, din);
ret |= ksz8893m_reg_set(slave, reg, din[2] & mask);
return ret;
}
static int ksz8893m_reset(struct spi_slave *slave)
{
int ret = 0;
/* Disable STPID mode */
ret |= ksz8893m_reg_clear(slave, KSZ_REG_GC9, 0x01);
/* Disable VLAN tag insert on Port3 */
ret |= ksz8893m_reg_clear(slave, KSZ_REG_P3C0, 0x04);
/* Start switch */
ret |= ksz8893m_reg_set(slave, KSZ_REG_STPID, 0x01);
return ret;
}
int board_eth_init(bd_t *bis)
{
static bool switch_is_alive = false;
int ret;
if (!switch_is_alive) {
struct spi_slave *slave = spi_setup_slave(0, 1, KSZ_MAX_HZ, SPI_MODE_3);
if (slave) {
if (!spi_claim_bus(slave)) {
ret = ksz8893m_reset(slave);
if (!ret)
switch_is_alive = true;
spi_release_bus(slave);
}
spi_free_slave(slave);
}
}
if (switch_is_alive)
return bfin_EMAC_initialize(bis);
else
return -1;
}
#endif
int misc_init_r(void)
{
#ifdef CONFIG_BFIN_MAC
uchar enetaddr[6];
if (!eth_getenv_enetaddr("ethaddr", enetaddr))
board_init_enetaddr(enetaddr);
#endif
return 0;
}
int board_early_init_f(void)
{
#if !defined(CONFIG_SYS_NO_FLASH)
/* setup BF518-EZBRD GPIO pin PG11 to AMS2. */
bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & ~PORT_x_MUX_6_MASK) | PORT_x_MUX_6_FUNC_2);
bfin_write_PORTG_FER(bfin_read_PORTG_FER() | PG11);
# if !defined(CONFIG_BFIN_SPI)
/* setup BF518-EZBRD GPIO pin PG15 to AMS3. */
bfin_write_PORTG_MUX((bfin_read_PORTG_MUX() & ~PORT_x_MUX_7_MASK) | PORT_x_MUX_7_FUNC_3);
bfin_write_PORTG_FER(bfin_read_PORTG_FER() | PG15);
# endif
#endif
return 0;
}
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