arch/arm/mach-davinci/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  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <i2c.h>
  14 #include <net.h>
  15 #include <asm/arch/hardware.h>
  16 #include <asm/io.h>
  17 #include <asm/arch/davinci_misc.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 #ifndef CONFIG_SPL_BUILD
  22 int dram_init(void)
  23 {
  24         /* dram_init must store complete ramsize in gd->ram_size */
  25         gd->ram_size = get_ram_size(
  26                         (void *)CONFIG_SYS_SDRAM_BASE,
  27                         CONFIG_MAX_RAM_BANK_SIZE);
  28         return 0;
  29 }
  30
  31 int dram_init_banksize(void)
  32 {
  33         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
  34         gd->bd->bi_dram[0].size = gd->ram_size;
  35
  36         return 0;
  37 }
  38 #endif
  39
  40 #ifdef CONFIG_DRIVER_TI_EMAC
  41 /*
  42  * Read ethernet MAC address from EEPROM for DVEVM compatible boards.
  43  * Returns 1 if found, 0 otherwise.
  44  */
  45 int dvevm_read_mac_address(uint8_t *buf)
  46 {
  47 #ifdef CONFIG_SYS_I2C_EEPROM_ADDR
  48         /* Read MAC address. */
  49         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00,
  50                 CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &buf[0], 6))
  51                 goto i2cerr;
  52
  53         /* Check that MAC address is valid. */
  54         if (!is_valid_ethaddr(buf))
  55                 goto err;
  56
  57         return 1; /* Found */
  58
  59 i2cerr:
  60         printf("Read from EEPROM @ 0x%02x failed\n",
  61                 CONFIG_SYS_I2C_EEPROM_ADDR);
  62 err:
  63 #endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
  64
  65         return 0;
  66 }
  67
  68 /*
  69  * Set the mii mode as MII or RMII
  70  */
  71 #if defined(CONFIG_SOC_DA8XX)
  72 void davinci_emac_mii_mode_sel(int mode_sel)
  73 {
  74         int val;
  75
  76         val = readl(&davinci_syscfg_regs->cfgchip3);
  77         if (mode_sel == 0)
  78                 val &= ~(1 << 8);
  79         else
  80                 val |= (1 << 8);
  81         writel(val, &davinci_syscfg_regs->cfgchip3);
  82 }
  83 #endif
  84 /*
  85  * If there is no MAC address in the environment, then it will be initialized
  86  * (silently) from the value in the EEPROM.
  87  */
  88 void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
  89 {
  90         uint8_t env_enetaddr[6];
  91         int ret;
  92
  93         ret = eth_getenv_enetaddr_by_index("eth", 0, env_enetaddr);
  94         if (!ret) {
  95                 /*
  96                  * There is no MAC address in the environment, so we
  97                  * initialize it from the value in the EEPROM.
  98                  */
  99                 debug("### Setting environment from EEPROM MAC address = "
 100                         "\"%pM\"\n",
 101                         env_enetaddr);
 102                 ret = !eth_env_set_enetaddr("ethaddr", rom_enetaddr);
 103         }
 104         if (!ret)
 105                 printf("Failed to set mac address from EEPROM: %d\n", ret);
 106 }
 107 #endif  /* CONFIG_DRIVER_TI_EMAC */
 108
 109 #if defined(CONFIG_SOC_DA8XX)
 110 void irq_init(void)
 111 {
 112         /*
 113          * Mask all IRQs by clearing the global enable and setting
 114          * the enable clear for all the 90 interrupts.
 115          */
 116         writel(0, &davinci_aintc_regs->ger);
 117
 118         writel(0, &davinci_aintc_regs->hier);
 119
 120         writel(0xffffffff, &davinci_aintc_regs->ecr1);
 121         writel(0xffffffff, &davinci_aintc_regs->ecr2);
 122         writel(0xffffffff, &davinci_aintc_regs->ecr3);
 123 }
 124
 125 /*
 126  * Enable PSC for various peripherals.
 127  */
 128 int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
 129                                     const int n_items)
 130 {
 131         int i;
 132
 133         for (i = 0; i < n_items; i++)
 134                 lpsc_on(item[i].lpsc_no);
 135
 136         return 0;
 137 }
 138 #endif