diff options
Diffstat (limited to 'u-boot/board/bf518f-ezbrd/bf518f-ezbrd.c')
| -rw-r--r-- | u-boot/board/bf518f-ezbrd/bf518f-ezbrd.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/u-boot/board/bf518f-ezbrd/bf518f-ezbrd.c b/u-boot/board/bf518f-ezbrd/bf518f-ezbrd.c new file mode 100644 index 0000000..ff1ac4c --- /dev/null +++ b/u-boot/board/bf518f-ezbrd/bf518f-ezbrd.c @@ -0,0 +1,162 @@ +/* + * 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/portmux.h> +#include <asm/mach-common/bits/otp.h> +#include <asm/sdh.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_CHID 0x00 /* Register 0: Chip ID0 */ +#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_read(struct spi_slave *slave, uchar reg) +{ + int ret; + unsigned char din[3]; + ret = ksz8893m_transfer(slave, KSZ_READ, reg, 0, din); + return ret ? ret : din[2]; +} + +static int ksz8893m_reg_clear(struct spi_slave *slave, uchar reg, uchar mask) +{ + return ksz8893m_reg_set(slave, reg, ksz8893m_reg_read(slave, reg) & mask); +} + +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, phy_is_ksz = true; + 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)) { + phy_is_ksz = (ksz8893m_reg_read(slave, KSZ_REG_CHID) == 0x88); + ret = phy_is_ksz ? ksz8893m_reset(slave) : 0; + switch_is_alive = (ret == 0); + 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) +{ + /* connect async banks by default */ + const unsigned short pins[] = { + P_AMS2, P_AMS3, 0, + }; + return peripheral_request_list(pins, "async"); +} + +#ifdef CONFIG_BFIN_SDH +int board_mmc_init(bd_t *bis) +{ + return bfin_mmc_init(bis); +} +#endif |