LXR uboot/board/davinci/da8xxevm/da830evm.c

   1/*
   2 * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
   3 *
   4 * Base on code from TI. Original Notices follow:
   5 *
   6 * (C) Copyright 2008, Texas Instruments, Inc. http://www.ti.com/
   7 *
   8 * Modified for DA8xx EVM.
   9 *
  10 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
  11 *
  12 * Parts are shamelessly stolen from various TI sources, original copyright
  13 * follows:
  14 * -----------------------------------------------------------------
  15 *
  16 * Copyright (C) 2004 Texas Instruments.
  17 *
  18 * ----------------------------------------------------------------------------
  19 * This program is free software; you can redistribute it and/or modify
  20 * it under the terms of the GNU General Public License as published by
  21 * the Free Software Foundation; either version 2 of the License, or
  22 * (at your option) any later version.
  23 *
  24 * This program is distributed in the hope that it will be useful,
  25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  27 * GNU General Public License for more details.
  28 *
  29 * You should have received a copy of the GNU General Public License
  30 * along with this program; if not, write to the Free Software
  31 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  32 * ----------------------------------------------------------------------------
  33 */
  34
  35#include <common.h>
  36#include <i2c.h>
  37#include <net.h>
  38#include <netdev.h>
  39#include <asm/arch/hardware.h>
  40#include <asm/arch/emif_defs.h>
  41#include <asm/arch/emac_defs.h>
  42#include <asm/arch/pinmux_defs.h>
  43#include <asm/io.h>
  44#include <nand.h>
  45#include <asm/arch/nand_defs.h>
  46#include <asm/arch/davinci_misc.h>
  47
  48#ifdef CONFIG_DAVINCI_MMC
  49#include <mmc.h>
  50#include <asm/arch/sdmmc_defs.h>
  51#endif
  52
  53DECLARE_GLOBAL_DATA_PTR;
  54
  55static const struct pinmux_resource pinmuxes[] = {
  56#ifdef CONFIG_SPI_FLASH
  57        PINMUX_ITEM(spi0_pins_base),
  58        PINMUX_ITEM(spi0_pins_scs0),
  59        PINMUX_ITEM(spi0_pins_ena),
  60#endif
  61        PINMUX_ITEM(uart2_pins_txrx),
  62        PINMUX_ITEM(i2c0_pins),
  63#ifdef CONFIG_USB_DA8XX
  64        PINMUX_ITEM(usb_pins),
  65#endif
  66#ifdef CONFIG_USE_NAND
  67        PINMUX_ITEM(emifa_pins),
  68        PINMUX_ITEM(emifa_pins_cs0),
  69        PINMUX_ITEM(emifa_pins_cs2),
  70        PINMUX_ITEM(emifa_pins_cs3),
  71#endif
  72#if defined(CONFIG_DRIVER_TI_EMAC)
  73        PINMUX_ITEM(emac_pins_rmii),
  74        PINMUX_ITEM(emac_pins_mdio),
  75        PINMUX_ITEM(emac_pins_rmii_clk_source),
  76#endif
  77#ifdef CONFIG_DAVINCI_MMC
  78        PINMUX_ITEM(mmc0_pins_8bit)
  79#endif
  80};
  81
  82static const struct lpsc_resource lpsc[] = {
  83        { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
  84        { DAVINCI_LPSC_SPI0 },  /* Serial Flash */
  85        { DAVINCI_LPSC_EMAC },  /* image download */
  86        { DAVINCI_LPSC_UART2 }, /* console */
  87        { DAVINCI_LPSC_GPIO },
  88#ifdef CONFIG_DAVINCI_MMC
  89        { DAVINCI_LPSC_MMC_SD },
  90#endif
  91
  92};
  93
  94#ifdef CONFIG_DAVINCI_MMC
  95static struct davinci_mmc mmc_sd0 = {
  96        .reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
  97        .host_caps = MMC_MODE_8BIT,
  98        .voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
  99        .version = MMC_CTLR_VERSION_2,
 100};
 101
 102int board_mmc_init(bd_t *bis)
 103{
 104        mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
 105
 106        printf("%x\n", mmc_sd0.input_clk);
 107
 108        /* Add slot-0 to mmc subsystem */
 109        return davinci_mmc_init(bis, &mmc_sd0);
 110}
 111#endif
 112
 113int board_init(void)
 114{
 115#ifndef CONFIG_USE_IRQ
 116        irq_init();
 117#endif
 118
 119#ifdef CONFIG_NAND_DAVINCI
 120        /* EMIFA 100MHz clock select */
 121        writel(readl(&davinci_syscfg_regs->cfgchip3) & ~2,
 122               &davinci_syscfg_regs->cfgchip3);
 123        /* NAND CS setup */
 124        writel((DAVINCI_ABCR_WSETUP(0) |
 125                DAVINCI_ABCR_WSTROBE(2) |
 126                DAVINCI_ABCR_WHOLD(0) |
 127                DAVINCI_ABCR_RSETUP(0) |
 128                DAVINCI_ABCR_RSTROBE(2) |
 129                DAVINCI_ABCR_RHOLD(0) |
 130                DAVINCI_ABCR_TA(2) |
 131                DAVINCI_ABCR_ASIZE_8BIT),
 132               &davinci_emif_regs->ab2cr);
 133#endif
 134
 135        /* arch number of the board */
 136        gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA830_EVM;
 137
 138        /* address of boot parameters */
 139        gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
 140
 141        /*
 142         * Power on required peripherals
 143         * ARM does not have access by default to PSC0 and PSC1
 144         * assuming here that the DSP bootloader has set the IOPU
 145         * such that PSC access is available to ARM
 146         */
 147        if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
 148                return 1;
 149
 150        /* setup the SUSPSRC for ARM to control emulation suspend */
 151        writel(readl(&davinci_syscfg_regs->suspsrc) &
 152               ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
 153                 DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
 154                 DAVINCI_SYSCFG_SUSPSRC_UART2),
 155               &davinci_syscfg_regs->suspsrc);
 156
 157        /* configure pinmux settings */
 158        if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
 159                return 1;
 160
 161        /* enable the console UART */
 162        writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
 163                DAVINCI_UART_PWREMU_MGMT_UTRST),
 164               &davinci_uart2_ctrl_regs->pwremu_mgmt);
 165
 166        return(0);
 167}
 168
 169
 170#ifdef CONFIG_NAND_DAVINCI
 171int board_nand_init(struct nand_chip *nand)
 172{
 173        davinci_nand_init(nand);
 174
 175        return 0;
 176}
 177#endif
 178
 179#if defined(CONFIG_DRIVER_TI_EMAC)
 180
 181#define PHY_SW_I2C_ADDR 0x5f /* Address of PHY on i2c bus */
 182
 183/*
 184 * Initializes on-board ethernet controllers.
 185 */
 186int board_eth_init(bd_t *bis)
 187{
 188        u_int8_t mac_addr[6];
 189        u_int8_t switch_start_cmd[2] = { 0x01, 0x23 };
 190        struct eth_device *dev;
 191
 192        /* Read Ethernet MAC address from EEPROM */
 193        if (dvevm_read_mac_address(mac_addr))
 194                /* set address env if not already set */
 195                davinci_sync_env_enetaddr(mac_addr);
 196
 197        /* read the address back from env */
 198        if (!eth_getenv_enetaddr("ethaddr", mac_addr))
 199                return -1;
 200
 201        /* enable the Ethernet switch in the 3 port PHY */
 202        if (i2c_write(PHY_SW_I2C_ADDR, 0, 0,
 203                        switch_start_cmd, sizeof(switch_start_cmd))) {
 204                printf("Ethernet switch start failed!\n");
 205                return -1;
 206        }
 207
 208        /* finally, initialise the driver */
 209        if (!davinci_emac_initialize()) {
 210                printf("Error: Ethernet init failed!\n");
 211                return -1;
 212        }
 213
 214        dev = eth_get_dev();
 215
 216        /* provide the resulting addr to the driver */
 217        memcpy(dev->enetaddr, mac_addr, 6);
 218        dev->write_hwaddr(dev);
 219
 220        return 0;
 221}
 222#endif /* CONFIG_DRIVER_TI_EMAC */
 223