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/board/Barix/ipam390/ipam390.c

@@ -0,0 +1,337 @@
+/*
+ * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
+ * Based on:
+ * U-Boot:board/davinci/da8xxevm/da850evm.c
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Based on da830evm.c. Original Copyrights follow:
+ *
+ * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
+ * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <i2c.h>
+#include <net.h>
+#include <netdev.h>
+#include <spi.h>
+#include <spi_flash.h>
+#include <asm/arch/hardware.h>
+#include <asm/ti-common/davinci_nand.h>
+#include <asm/arch/emac_defs.h>
+#include <asm/arch/pinmux_defs.h>
+#include <asm/io.h>
+#include <asm/arch/davinci_misc.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <hwconfig.h>
+#include <bootstage.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
+#define HAS_RMII 1
+#else
+#define HAS_RMII 0
+#endif
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
+void dsp_lpsc_on(unsigned domain, unsigned int id)
+{
+	dv_reg_p mdstat, mdctl, ptstat, ptcmd;
+	struct davinci_psc_regs *psc_regs;
+
+	psc_regs = davinci_psc0_regs;
+	mdstat = &psc_regs->psc0.mdstat[id];
+	mdctl = &psc_regs->psc0.mdctl[id];
+	ptstat = &psc_regs->ptstat;
+	ptcmd = &psc_regs->ptcmd;
+
+	while (*ptstat & (0x1 << domain))
+		;
+
+	if ((*mdstat & 0x1f) == 0x03)
+		return;                 /* Already on and enabled */
+
+	*mdctl |= 0x03;
+
+	*ptcmd = 0x1 << domain;
+
+	while (*ptstat & (0x1 << domain))
+		;
+	while ((*mdstat & 0x1f) != 0x03)
+		;		/* Probably an overkill... */
+}
+
+static void dspwake(void)
+{
+	unsigned *resetvect = (unsigned *)DAVINCI_L3CBARAM_BASE;
+	u32 val;
+
+	/* if the device is ARM only, return */
+	if ((readl(CHIP_REV_ID_REG) & 0x3f) == 0x10)
+		return;
+
+	if (hwconfig_subarg_cmp_f("dsp", "wake", "no", NULL))
+		return;
+
+	*resetvect++ = 0x1E000; /* DSP Idle */
+	/* clear out the next 10 words as NOP */
+	memset(resetvect, 0, sizeof(unsigned) * 10);
+
+	/* setup the DSP reset vector */
+	writel(DAVINCI_L3CBARAM_BASE, HOST1CFG);
+
+	dsp_lpsc_on(1, DAVINCI_LPSC_GEM);
+	val = readl(PSC0_MDCTL + (15 * 4));
+	val |= 0x100;
+	writel(val, (PSC0_MDCTL + (15 * 4)));
+}
+
+int misc_init_r(void)
+{
+	dspwake();
+	return 0;
+}
+
+static const struct pinmux_config gpio_pins[] = {
+	/* GP7[14] selects bootmode*/
+	{ pinmux(16), 8, 3 },	/* GP7[14] */
+};
+
+const struct pinmux_resource pinmuxes[] = {
+#ifdef CONFIG_DRIVER_TI_EMAC
+	PINMUX_ITEM(emac_pins_mdio),
+#ifdef CONFIG_DRIVER_TI_EMAC_USE_RMII
+	PINMUX_ITEM(emac_pins_rmii),
+#else
+	PINMUX_ITEM(emac_pins_mii),
+#endif
+#endif
+	PINMUX_ITEM(uart2_pins_txrx),
+	PINMUX_ITEM(uart2_pins_rtscts),
+	PINMUX_ITEM(uart0_pins_txrx),
+	PINMUX_ITEM(uart0_pins_rtscts),
+#ifdef CONFIG_NAND_DAVINCI
+	PINMUX_ITEM(emifa_pins_cs3),
+	PINMUX_ITEM(emifa_pins_nand),
+#endif
+	PINMUX_ITEM(gpio_pins),
+};
+
+const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
+
+const struct lpsc_resource lpsc[] = {
+	{ DAVINCI_LPSC_AEMIF },	/* NAND, NOR */
+	{ DAVINCI_LPSC_EMAC },	/* image download */
+	{ DAVINCI_LPSC_UART2 },	/* console */
+	{ DAVINCI_LPSC_UART0 },	/* console */
+	{ DAVINCI_LPSC_GPIO },
+};
+
+const int lpsc_size = ARRAY_SIZE(lpsc);
+
+#ifndef CONFIG_DA850_EVM_MAX_CPU_CLK
+#define CONFIG_DA850_EVM_MAX_CPU_CLK	300000000
+#endif
+
+#define REV_AM18X_EVM		0x100
+
+/*
+ * get_board_rev() - setup to pass kernel board revision information
+ * Returns:
+ * bit[0-3]	Maximum cpu clock rate supported by onboard SoC
+ *		0000b - 300 MHz
+ *		0001b - 372 MHz
+ *		0010b - 408 MHz
+ *		0011b - 456 MHz
+ */
+u32 get_board_rev(void)
+{
+	char *s;
+	u32 maxcpuclk = CONFIG_DA850_EVM_MAX_CPU_CLK;
+	u32 rev = 0;
+
+	s = getenv("maxcpuclk");
+	if (s)
+		maxcpuclk = simple_strtoul(s, NULL, 10);
+
+	if (maxcpuclk >= 456000000)
+		rev = 3;
+	else if (maxcpuclk >= 408000000)
+		rev = 2;
+	else if (maxcpuclk >= 372000000)
+		rev = 1;
+#ifdef CONFIG_DA850_AM18X_EVM
+	rev |= REV_AM18X_EVM;
+#endif
+	return rev;
+}
+
+int board_early_init_f(void)
+{
+	/*
+	 * Power on required peripherals
+	 * ARM does not have access by default to PSC0 and PSC1
+	 * assuming here that the DSP bootloader has set the IOPU
+	 * such that PSC access is available to ARM
+	 */
+	if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
+		return 1;
+
+	return 0;
+}
+
+int board_init(void)
+{
+#ifndef CONFIG_USE_IRQ
+	irq_init();
+#endif
+
+	/* arch number of the board */
+	gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
+
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
+
+	/* setup the SUSPSRC for ARM to control emulation suspend */
+	writel(readl(&davinci_syscfg_regs->suspsrc) &
+	       ~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
+		 DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
+		 DAVINCI_SYSCFG_SUSPSRC_UART0),
+	       &davinci_syscfg_regs->suspsrc);
+
+	/* configure pinmux settings */
+	if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
+		return 1;
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+	davinci_emac_mii_mode_sel(HAS_RMII);
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
+	/* enable the console UART */
+	writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
+		DAVINCI_UART_PWREMU_MGMT_UTRST),
+#if (CONFIG_SYS_NS16550_COM1 == DAVINCI_UART0_BASE)
+	       &davinci_uart0_ctrl_regs->pwremu_mgmt);
+#else
+	       &davinci_uart2_ctrl_regs->pwremu_mgmt);
+#endif
+	return 0;
+}
+
+#ifdef CONFIG_DRIVER_TI_EMAC
+/*
+ * Initializes on-board ethernet controllers.
+ */
+int board_eth_init(bd_t *bis)
+{
+	if (!davinci_emac_initialize()) {
+		printf("Error: Ethernet init failed!\n");
+		return -1;
+	}
+
+	return 0;
+}
+#endif /* CONFIG_DRIVER_TI_EMAC */
+
+static int init_led(int gpio, char *name, int val)
+{
+	int ret;
+
+	ret = gpio_request(gpio, name);
+	if (ret)
+		return -1;
+	ret = gpio_direction_output(gpio, val);
+	if (ret)
+		return -1;
+
+	return gpio;
+}
+
+#define LED_ON	0
+#define LED_OFF	1
+
+#if !defined(CONFIG_SPL_BUILD)
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+void show_boot_progress(int status)
+{
+	static int red;
+	static int green;
+
+	if (red == 0)
+		red = init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
+	if (red != CONFIG_IPAM390_GPIO_LED_RED)
+		return;
+	if (green == 0)
+		green = init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green",
+				 LED_OFF);
+	if (green != CONFIG_IPAM390_GPIO_LED_GREEN)
+		return;
+
+	switch (status) {
+	case BOOTSTAGE_ID_RUN_OS:
+		/*
+		 * set normal state
+		 * LED Red  : on
+		 * LED green: off
+		 */
+		gpio_set_value(red, LED_ON);
+		gpio_set_value(green, LED_OFF);
+		break;
+	case BOOTSTAGE_ID_MAIN_LOOP:
+		/*
+		 * U-Boot operation
+		 * LED Red  : on
+		 * LED green: on
+		 */
+		gpio_set_value(red, LED_ON);
+		gpio_set_value(green, LED_ON);
+		break;
+	}
+}
+#endif
+#endif
+
+#ifdef CONFIG_SPL_OS_BOOT
+int spl_start_uboot(void)
+{
+	int ret;
+	int bootmode = 0;
+
+	/*
+	 * GP7[14] selects bootmode:
+	 * 1: boot linux
+	 * 0: boot u-boot
+	 * if error accessing gpio boot U-Boot
+	 *
+	 * SPL bootmode
+	 * 0: boot linux
+	 * 1: boot u-boot
+	 */
+	ret = gpio_request(CONFIG_IPAM390_GPIO_BOOTMODE , "bootmode");
+	if (ret)
+		bootmode = 1;
+	if (!bootmode) {
+		ret = gpio_direction_input(CONFIG_IPAM390_GPIO_BOOTMODE);
+		if (ret)
+			bootmode = 1;
+	}
+	if (!bootmode)
+		ret = gpio_get_value(CONFIG_IPAM390_GPIO_BOOTMODE);
+	if (!bootmode)
+		if (ret == 0)
+			bootmode = 1;
+	/*
+	 * LED red  : on
+	 * LED green: off
+	 */
+	init_led(CONFIG_IPAM390_GPIO_LED_RED, "red", LED_ON);
+	init_led(CONFIG_IPAM390_GPIO_LED_GREEN, "green", LED_OFF);
+	return bootmode;
+}
+#endif