diff options
Diffstat (limited to 'board/denx/m28evk/m28evk.c')
| -rw-r--r-- | board/denx/m28evk/m28evk.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/board/denx/m28evk/m28evk.c b/board/denx/m28evk/m28evk.c new file mode 100644 index 0000000..8cf3dc9 --- /dev/null +++ b/board/denx/m28evk/m28evk.c @@ -0,0 +1,216 @@ +/* + * DENX M28 module + * + * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com> + * on behalf of DENX Software Engineering GmbH + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <asm/gpio.h> +#include <asm/io.h> +#include <asm/arch/imx-regs.h> +#include <asm/arch/iomux-mx28.h> +#include <asm/arch/clock.h> +#include <asm/arch/sys_proto.h> +#include <linux/mii.h> +#include <miiphy.h> +#include <netdev.h> +#include <errno.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Functions + */ +int board_early_init_f(void) +{ + /* IO0 clock at 480MHz */ + mx28_set_ioclk(MXC_IOCLK0, 480000); + /* IO1 clock at 480MHz */ + mx28_set_ioclk(MXC_IOCLK1, 480000); + + /* SSP0 clock at 96MHz */ + mx28_set_sspclk(MXC_SSPCLK0, 96000, 0); + /* SSP2 clock at 96MHz */ + mx28_set_sspclk(MXC_SSPCLK2, 96000, 0); + +#ifdef CONFIG_CMD_USB + mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT); + mxs_iomux_setup_pad(MX28_PAD_AUART3_TX__GPIO_3_13 | + MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP); + gpio_direction_output(MX28_PAD_AUART3_TX__GPIO_3_13, 0); +#endif + + return 0; +} + +int board_init(void) +{ + /* Adress of boot parameters */ + gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + + return 0; +} + +#define HW_DIGCTRL_SCRATCH0 0x8001c280 +#define HW_DIGCTRL_SCRATCH1 0x8001c290 +int dram_init(void) +{ + uint32_t sz[2]; + + sz[0] = readl(HW_DIGCTRL_SCRATCH0); + sz[1] = readl(HW_DIGCTRL_SCRATCH1); + + if (sz[0] != sz[1]) { + printf("MX28:\n" + "Error, the RAM size in HW_DIGCTRL_SCRATCH0 and\n" + "HW_DIGCTRL_SCRATCH1 is not the same. Please\n" + "verify these two registers contain valid RAM size!\n"); + hang(); + } + + gd->ram_size = sz[0]; + return 0; +} + +#ifdef CONFIG_CMD_MMC +static int m28_mmc_wp(int id) +{ + if (id != 0) { + printf("MXS MMC: Invalid card selected (card id = %d)\n", id); + return 1; + } + + return gpio_get_value(MX28_PAD_AUART2_CTS__GPIO_3_10); +} + +int board_mmc_init(bd_t *bis) +{ + /* Configure WP as output */ + gpio_direction_input(MX28_PAD_AUART2_CTS__GPIO_3_10); + + return mxsmmc_initialize(bis, 0, m28_mmc_wp); +} +#endif + +#ifdef CONFIG_CMD_NET + +#define MII_OPMODE_STRAP_OVERRIDE 0x16 +#define MII_PHY_CTRL1 0x1e +#define MII_PHY_CTRL2 0x1f + +int fecmxc_mii_postcall(int phy) +{ + miiphy_write("FEC1", phy, MII_BMCR, 0x9000); + miiphy_write("FEC1", phy, MII_OPMODE_STRAP_OVERRIDE, 0x0202); + if (phy == 3) + miiphy_write("FEC1", 3, MII_PHY_CTRL2, 0x8180); + return 0; +} + +int board_eth_init(bd_t *bis) +{ + struct mx28_clkctrl_regs *clkctrl_regs = + (struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE; + struct eth_device *dev; + int ret; + + ret = cpu_eth_init(bis); + + clrsetbits_le32(&clkctrl_regs->hw_clkctrl_enet, + CLKCTRL_ENET_TIME_SEL_MASK | CLKCTRL_ENET_CLK_OUT_EN, + CLKCTRL_ENET_TIME_SEL_RMII_CLK); + + ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE); + if (ret) { + printf("FEC MXS: Unable to init FEC0\n"); + return ret; + } + + ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE); + if (ret) { + printf("FEC MXS: Unable to init FEC1\n"); + return ret; + } + + dev = eth_get_dev_by_name("FEC0"); + if (!dev) { + printf("FEC MXS: Unable to get FEC0 device entry\n"); + return -EINVAL; + } + + ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall); + if (ret) { + printf("FEC MXS: Unable to register FEC0 mii postcall\n"); + return ret; + } + + dev = eth_get_dev_by_name("FEC1"); + if (!dev) { + printf("FEC MXS: Unable to get FEC1 device entry\n"); + return -EINVAL; + } + + ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall); + if (ret) { + printf("FEC MXS: Unable to register FEC1 mii postcall\n"); + return ret; + } + + return ret; +} + +#ifdef CONFIG_M28_FEC_MAC_IN_OCOTP + +#define MXS_OCOTP_MAX_TIMEOUT 1000000 +void imx_get_mac_from_fuse(char *mac) +{ + struct mx28_ocotp_regs *ocotp_regs = + (struct mx28_ocotp_regs *)MXS_OCOTP_BASE; + uint32_t data; + + memset(mac, 0, 6); + + writel(OCOTP_CTRL_RD_BANK_OPEN, &ocotp_regs->hw_ocotp_ctrl_set); + + if (mx28_wait_mask_clr(&ocotp_regs->hw_ocotp_ctrl_reg, OCOTP_CTRL_BUSY, + MXS_OCOTP_MAX_TIMEOUT)) { + printf("MXS FEC: Can't get MAC from OCOTP\n"); + return; + } + + data = readl(&ocotp_regs->hw_ocotp_cust0); + + mac[0] = 0x00; + mac[1] = 0x04; + mac[2] = (data >> 24) & 0xff; + mac[3] = (data >> 16) & 0xff; + mac[4] = (data >> 8) & 0xff; + mac[5] = data & 0xff; +} +#else +void imx_get_mac_from_fuse(char *mac) +{ + memset(mac, 0, 6); +} +#endif + +#endif |