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/varisys/cyrus/cyrus.c

@@ -0,0 +1,116 @@
+/*
+ * Based on corenet_ds.c
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <netdev.h>
+#include <linux/compiler.h>
+#include <asm/mmu.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_law.h>
+#include <asm/fsl_serdes.h>
+#include <asm/fsl_portals.h>
+#include <asm/fsl_liodn.h>
+#include <fm_eth.h>
+#include <pci.h>
+
+#include "cyrus.h"
+#include "../common/eeprom.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define GPIO_OPENDRAIN 0x30000000
+#define GPIO_DIR       0x3c000004
+#define GPIO_INITIAL   0x30000000
+#define GPIO_VGA_SWITCH 0x00001000
+
+int checkboard(void)
+{
+	printf("Board: CYRUS\n");
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR);
+
+	/*
+	 * Only use DDR1_MCK0/3 and DDR2_MCK0/3
+	 * disable DDR1_MCK1/2/4/5 and DDR2_MCK1/2/4/5 to reduce
+	 * the noise introduced by these unterminated and unused clock pairs.
+	 */
+	setbits_be32(&gur->ddrclkdr, 0x001B001B);
+
+	/* Set GPIO reset lines to open-drain, tristate */
+	setbits_be32(&pgpio->gpdat, GPIO_INITIAL);
+	setbits_be32(&pgpio->gpodr, GPIO_OPENDRAIN);
+
+	/* Set GPIO Direction */
+	setbits_be32(&pgpio->gpdir, GPIO_DIR);
+
+	return 0;
+}
+
+int board_early_init_r(void)
+{
+	fsl_lbc_t *lbc = LBC_BASE_ADDR;
+
+	out_be32(&lbc->lbcr, 0);
+	/* 1 clock LALE cycle */
+	out_be32(&lbc->lcrr, 0x80000000 | CONFIG_SYS_LBC_LCRR);
+
+	set_liodns();
+
+#ifdef CONFIG_SYS_DPAA_QBMAN
+	setup_portals();
+#endif
+	print_lbc_regs();
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	return 0;
+}
+
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	phys_addr_t base;
+	phys_size_t size;
+
+	ft_cpu_setup(blob, bd);
+
+	base = getenv_bootm_low();
+	size = getenv_bootm_size();
+
+	fdt_fixup_memory(blob, (u64)base, (u64)size);
+
+#ifdef CONFIG_PCI
+	pci_of_setup(blob, bd);
+#endif
+
+	fdt_fixup_liodn(blob);
+	fdt_fixup_dr_usb(blob, bd);
+
+#ifdef CONFIG_SYS_DPAA_FMAN
+	fdt_fixup_fman_ethernet(blob);
+#endif
+
+	return 0;
+}
+
+int mac_read_from_eeprom(void)
+{
+	init_eeprom(CONFIG_SYS_EEPROM_BUS_NUM,
+		CONFIG_SYS_I2C_EEPROM_ADDR,
+		CONFIG_SYS_I2C_EEPROM_ADDR_LEN);
+
+	return mac_read_from_eeprom_common();
+}