board/davinci/common/misc.c

   1 /*
   2  * Miscelaneous DaVinci functions.
   3  *
   4  * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson@gefanuc.com>
   5  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
   6  * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
   7  * Copyright (C) 2004 Texas Instruments.
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include <common.h>
  28 #include <i2c.h>
  29 #include <net.h>
  30 #include <asm/arch/hardware.h>
  31 #include <asm/io.h>
  32 #include <asm/arch/davinci_misc.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 #ifndef CONFIG_PRELOADER
  37 int dram_init(void)
  38 {
  39         /* dram_init must store complete ramsize in gd->ram_size */
  40         gd->ram_size = get_ram_size(
  41                         (volatile void *)CONFIG_SYS_SDRAM_BASE,
  42                         CONFIG_MAX_RAM_BANK_SIZE);
  43         return 0;
  44 }
  45
  46 void dram_init_banksize(void)
  47 {
  48         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
  49         gd->bd->bi_dram[0].size = gd->ram_size;
  50 }
  51 #endif
  52
  53 #ifdef CONFIG_DRIVER_TI_EMAC
  54
  55 /* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
  56  * Returns 1 if found, 0 otherwise.
  57  */
  58 int dvevm_read_mac_address(uint8_t *buf)
  59 {
  60 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
  61         /* Read MAC address. */
  62         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00, CONFIG_SYS_I2C_EEPROM_ADDR_LEN,
  63                      (uint8_t *) &buf[0], 6))
  64                 goto i2cerr;
  65
  66         /* Check that MAC address is valid. */
  67         if (!is_valid_ether_addr(buf))
  68                 goto err;
  69
  70         return 1; /* Found */
  71
  72 i2cerr:
  73         printf("Read from EEPROM @ 0x%02x failed\n", CONFIG_SYS_I2C_EEPROM_ADDR);
  74 err:
  75 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
  76
  77         return 0;
  78 }
  79
  80 /*
  81  * Set the mii mode as MII or RMII
  82  */
  83 #if defined(CONFIG_SOC_DA8XX)
  84 void davinci_emac_mii_mode_sel(int mode_sel)
  85 {
  86         int val;
  87
  88         val = readl(&davinci_syscfg_regs->cfgchip3);
  89         if (mode_sel == 0)
  90                 val &= ~(1 << 8);
  91         else
  92                 val |= (1 << 8);
  93         writel(val, &davinci_syscfg_regs->cfgchip3);
  94 }
  95 #endif
  96 /*
  97  * If there is no MAC address in the environment, then it will be initialized
  98  * (silently) from the value in the EEPROM.
  99  */
 100 void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
 101 {
 102         uint8_t env_enetaddr[6];
 103
 104         eth_getenv_enetaddr_by_index(0, env_enetaddr);
 105         if (!memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
 106                 /* There is no MAC address in the environment, so we initialize
 107                  * it from the value in the EEPROM. */
 108                 debug("### Setting environment from EEPROM MAC address = "
 109                         "\"%pM\"\n",
 110                         env_enetaddr);
 111                 eth_setenv_enetaddr("ethaddr", rom_enetaddr);
 112         }
 113 }
 114
 115 #endif  /* CONFIG_DRIVER_TI_EMAC */
 116
 117 #if defined(CONFIG_SOC_DA8XX)
 118 #ifndef CONFIG_USE_IRQ
 119 void irq_init(void)
 120 {
 121         /*
 122          * Mask all IRQs by clearing the global enable and setting
 123          * the enable clear for all the 90 interrupts.
 124          */
 125
 126         writel(0, &davinci_aintc_regs->ger);
 127
 128         writel(0, &davinci_aintc_regs->hier);
 129
 130         writel(0xffffffff, &davinci_aintc_regs->ecr1);
 131         writel(0xffffffff, &davinci_aintc_regs->ecr2);
 132         writel(0xffffffff, &davinci_aintc_regs->ecr3);
 133 }
 134 #endif
 135
 136 /*
 137  * Enable PSC for various peripherals.
 138  */
 139 int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
 140                                     const int n_items)
 141 {
 142         int i;
 143
 144         for (i = 0; i < n_items; i++)
 145                 lpsc_on(item[i].lpsc_no);
 146
 147         return 0;
 148 }
 149 #endif