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      1 // SPDX-License-Identifier: GPL-2.0+
      2 /*
      3  * Miscelaneous DaVinci functions.
      4  *
      5  * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson (at) gefanuc.com>
      6  * Copyright (C) 2007 Sergey Kubushyn <ksi (at) 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 
     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_env_get_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
    139