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/rk3328_common.h

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
*/
#ifndef __CONFIG_RK3328_COMMON_H
#define __CONFIG_RK3328_COMMON_H
#include "rockchip-common.h"
#define CONFIG_SYS_MALLOC_LEN (32 << 20)
#define CONFIG_SYS_CBSIZE 1024
#define CONFIG_SKIP_LOWLEVEL_INIT
#define CONFIG_SYS_NS16550_MEM32
#define CONFIG_SYS_INIT_SP_ADDR 0x00300000
#define CONFIG_SYS_LOAD_ADDR 0x00800800
#define CONFIG_SYS_BOOTM_LEN (64 << 20) /* 64M */
/* MMC/SD IP block */
#define CONFIG_BOUNCE_BUFFER
/* RAW SD card / eMMC locations. */
#define CONFIG_SYS_SPI_U_BOOT_OFFS (128 << 10)
/* FAT sd card locations. */
#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1
#define CONFIG_SYS_SDRAM_BASE 0
#define SDRAM_MAX_SIZE 0xff000000
#define CONFIG_SPI_FLASH
#define CONFIG_SF_DEFAULT_SPEED 20000000
#ifndef CONFIG_SPL_BUILD
#define ENV_MEM_LAYOUT_SETTINGS \
"scriptaddr=0x00500000\0" \
"pxefile_addr_r=0x00600000\0" \
"fdt_addr_r=0x01f00000\0" \
"kernel_addr_r=0x02080000\0" \
"ramdisk_addr_r=0x04000000\0"
#include <config_distro_bootcmd.h>
#define CONFIG_EXTRA_ENV_SETTINGS \
ENV_MEM_LAYOUT_SETTINGS \
"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
"partitions=" PARTS_DEFAULT \
BOOTENV
#endif
/* rockchip ohci host driver */
#define CONFIG_USB_OHCI_NEW
#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 1
#endif