LXR uboot/arch/arm/mach-davinci/misc.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Miscelaneous DaVinci functions.
   4 *
   5 * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson@gefanuc.com>
   6 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
   7 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
   8 * Copyright (C) 2004 Texas Instruments.
   9 */
  10
  11#include <common.h>
  12#include <environment.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
  19DECLARE_GLOBAL_DATA_PTR;
  20
  21#ifndef CONFIG_SPL_BUILD
  22int 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
  31int 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 */
  45int 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
  59i2cerr:
  60        printf("Read from EEPROM @ 0x%02x failed\n",
  61                CONFIG_SYS_I2C_EEPROM_ADDR);
  62err:
  63#endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
  64
  65        return 0;
  66}
  67
  68/*
  69 * Set the mii mode as MII or RMII
  70 */
  71void davinci_emac_mii_mode_sel(int mode_sel)
  72{
  73        int val;
  74
  75        val = readl(&davinci_syscfg_regs->cfgchip3);
  76        if (mode_sel == 0)
  77                val &= ~(1 << 8);
  78        else
  79                val |= (1 << 8);
  80        writel(val, &davinci_syscfg_regs->cfgchip3);
  81}
  82
  83/*
  84 * If there is no MAC address in the environment, then it will be initialized
  85 * (silently) from the value in the EEPROM.
  86 */
  87void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
  88{
  89        uint8_t env_enetaddr[6];
  90        int ret;
  91
  92        ret = eth_env_get_enetaddr_by_index("eth", 0, env_enetaddr);
  93        if (!ret) {
  94                /*
  95                 * There is no MAC address in the environment, so we
  96                 * initialize it from the value in the EEPROM.
  97                 */
  98                debug("### Setting environment from EEPROM MAC address = "
  99                        "\"%pM\"\n",
 100                        env_enetaddr);
 101                ret = !eth_env_set_enetaddr("ethaddr", rom_enetaddr);
 102        }
 103        if (!ret)
 104                printf("Failed to set mac address from EEPROM: %d\n", ret);
 105}
 106#endif  /* CONFIG_DRIVER_TI_EMAC */
 107
 108void irq_init(void)
 109{
 110        /*
 111         * Mask all IRQs by clearing the global enable and setting
 112         * the enable clear for all the 90 interrupts.
 113         */
 114        writel(0, &davinci_aintc_regs->ger);
 115
 116        writel(0, &davinci_aintc_regs->hier);
 117
 118        writel(0xffffffff, &davinci_aintc_regs->ecr1);
 119        writel(0xffffffff, &davinci_aintc_regs->ecr2);
 120        writel(0xffffffff, &davinci_aintc_regs->ecr3);
 121}
 122
 123/*
 124 * Enable PSC for various peripherals.
 125 */
 126int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
 127                                    const int n_items)
 128{
 129        int i;
 130
 131        for (i = 0; i < n_items; i++)
 132                lpsc_on(item[i].lpsc_no);
 133
 134        return 0;
 135}
 136