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 <env.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 void 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  */
  87 void 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
 108 void 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  */
 126 int 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 }