avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/arch/arm/mach-davinci/misc.c

@@ -0,0 +1,138 @@
+/*
+ * Miscelaneous DaVinci functions.
+ *
+ * Copyright (C) 2009 Nick Thompson, GE Fanuc Ltd, <nick.thompson@gefanuc.com>
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
+ * Copyright (C) 2004 Texas Instruments.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <net.h>
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+#include <asm/arch/davinci_misc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifndef CONFIG_SPL_BUILD
+int dram_init(void)
+{
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size(
+			(void *)CONFIG_SYS_SDRAM_BASE,
+			CONFIG_MAX_RAM_BANK_SIZE);
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].size = gd->ram_size;
+}
+#endif
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+/*
+ * Read ethernet MAC address from EEPROM for DVEVM compatible boards.
+ * Returns 1 if found, 0 otherwise.
+ */
+int dvevm_read_mac_address(uint8_t *buf)
+{
+#ifdef CONFIG_SYS_I2C_EEPROM_ADDR
+	/* Read MAC address. */
+	if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0x7F00,
+		CONFIG_SYS_I2C_EEPROM_ADDR_LEN, (uint8_t *) &buf[0], 6))
+		goto i2cerr;
+
+	/* Check that MAC address is valid. */
+	if (!is_valid_ethaddr(buf))
+		goto err;
+
+	return 1; /* Found */
+
+i2cerr:
+	printf("Read from EEPROM @ 0x%02x failed\n",
+		CONFIG_SYS_I2C_EEPROM_ADDR);
+err:
+#endif /* CONFIG_SYS_I2C_EEPROM_ADDR */
+
+	return 0;
+}
+
+/*
+ * Set the mii mode as MII or RMII
+ */
+#if defined(CONFIG_SOC_DA8XX)
+void davinci_emac_mii_mode_sel(int mode_sel)
+{
+	int val;
+
+	val = readl(&davinci_syscfg_regs->cfgchip3);
+	if (mode_sel == 0)
+		val &= ~(1 << 8);
+	else
+		val |= (1 << 8);
+	writel(val, &davinci_syscfg_regs->cfgchip3);
+}
+#endif
+/*
+ * If there is no MAC address in the environment, then it will be initialized
+ * (silently) from the value in the EEPROM.
+ */
+void davinci_sync_env_enetaddr(uint8_t *rom_enetaddr)
+{
+	uint8_t env_enetaddr[6];
+	int ret;
+
+	ret = eth_getenv_enetaddr_by_index("eth", 0, env_enetaddr);
+	if (!ret) {
+		/*
+		 * There is no MAC address in the environment, so we
+		 * initialize it from the value in the EEPROM.
+		 */
+		debug("### Setting environment from EEPROM MAC address = "
+			"\"%pM\"\n",
+			env_enetaddr);
+		ret = !eth_setenv_enetaddr("ethaddr", rom_enetaddr);
+	}
+	if (!ret)
+		printf("Failed to set mac address from EEPROM: %d\n", ret);
+}
+#endif	/* CONFIG_DRIVER_TI_EMAC */
+
+#if defined(CONFIG_SOC_DA8XX)
+#ifndef CONFIG_USE_IRQ
+void irq_init(void)
+{
+	/*
+	 * Mask all IRQs by clearing the global enable and setting
+	 * the enable clear for all the 90 interrupts.
+	 */
+	writel(0, &davinci_aintc_regs->ger);
+
+	writel(0, &davinci_aintc_regs->hier);
+
+	writel(0xffffffff, &davinci_aintc_regs->ecr1);
+	writel(0xffffffff, &davinci_aintc_regs->ecr2);
+	writel(0xffffffff, &davinci_aintc_regs->ecr3);
+}
+#endif
+
+/*
+ * Enable PSC for various peripherals.
+ */
+int da8xx_configure_lpsc_items(const struct lpsc_resource *item,
+				    const int n_items)
+{
+	int i;
+
+	for (i = 0; i < n_items; i++)
+		lpsc_on(item[i].lpsc_no);
+
+	return 0;
+}
+#endif