upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/include/configs/k2e_evm.h

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Configuration header file for TI's k2e-evm
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*/
#ifndef __CONFIG_K2E_EVM_H
#define __CONFIG_K2E_EVM_H
#include <environment/ti/spi.h>
/* Platform type */
#define CONFIG_SOC_K2E
#ifdef CONFIG_TI_SECURE_DEVICE
#define DEFAULT_SEC_BOOT_ENV \
DEFAULT_FIT_TI_ARGS \
"findfdt=setenv fdtfile ${name_fdt}\0"
#else
#define DEFAULT_SEC_BOOT_ENV
#endif
/* U-Boot general configuration */
#define CONFIG_EXTRA_ENV_KS2_BOARD_SETTINGS \
DEFAULT_FW_INITRAMFS_BOOT_ENV \
DEFAULT_SEC_BOOT_ENV \
"boot=ubi\0" \
"args_ubi=setenv bootargs ${bootargs} rootfstype=ubifs " \
"root=ubi0:rootfs rootflags=sync rw ubi.mtd=ubifs,2048\0" \
"name_fdt=keystone-k2e-evm.dtb\0" \
"name_mon=skern-k2e.bin\0" \
"name_ubi=k2e-evm-ubifs.ubi\0" \
"name_uboot=u-boot-spi-k2e-evm.gph\0" \
"name_fs=arago-console-image-k2e-evm.cpio.gz\0"
#define CONFIG_ENV_SIZE (256 << 10) /* 256 KiB */
#define CONFIG_ENV_OFFSET 0x100000
#include <configs/ti_armv7_keystone2.h>
/* SPL SPI Loader Configuration */
#define CONFIG_SPL_TEXT_BASE 0x0c100000
#define SPI_MTD_PARTS KEYSTONE_SPI0_MTD_PARTS
/* NAND Configuration */
#define CONFIG_SYS_NAND_PAGE_2K
/* Network */
#define CONFIG_KSNET_NETCP_V1_5
#define CONFIG_KSNET_CPSW_NUM_PORTS 9
#define CONFIG_KSNET_MDIO_PHY_CONFIG_ENABLE
#define CONFIG_DDR_SPD
#endif /* __CONFIG_K2E_EVM_H */