The u-boot patch was added to set default environment.

patches/u-boot/set-extra-env.patch

@@ -0,0 +1,37 @@
+--- include/configs/zynq_red_pitaya.h	2017-01-17 20:59:19.000000000 +0700
++++ include/configs/zynq_red_pitaya.h	2018-08-31 15:32:51.000000000 +0700
+@@ -23,8 +23,34 @@
+ #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS	5
+ #define CONFIG_SYS_EEPROM_SIZE			8192 /* Bytes */
+
++#undef CONFIG_ENV_SIZE
++#undef CONFIG_EXTRA_ENV_SETTINGS
++
+ #define CONFIG_ENV_IS_IN_EEPROM
+ #define CONFIG_ENV_SIZE		1024 /* Total Size of Environment Sector */
+ #define CONFIG_ENV_OFFSET	(2048*3) /* WP area starts at last 1/4 of 8k eeprom */
+
++#define CONFIG_EXTRA_ENV_SETTINGS \
++    "bootcmd=run $modeboot\0" \
++    "bootdelay=3\0" \
++    "baudrate=115200\0" \
++    "ipaddr=10.10.70.102\0" \
++    "serverip=10.10.70.101\0" \
++    "prod_date=12/22/13\0" \
++    "kernel_image=uImage\0" \
++    "ramdisk_image=uramdisk.image.gz\0" \
++    "devicetree_image=devicetree.dtb\0" \
++    "bitstream_image=system.bit.bin\0" \
++    "loadbit_addr=0x100000\0" \
++    "kernel_size=0x500000\0" \
++    "devicetree_size=0x20000\0" \
++    "ramdisk_size=0x5E0000\0" \
++    "fdt_high=0x20000000\0" \
++    "initrd_high=0x20000000\0" \
++    "sdboot=echo Copying Linux from SD to RAM... && mmcinfo && fatload mmc 0 0x3000000 ${kernel_image} && fatload mmc 0 0x2A00000 ${devicetree_image} && fatload mmc 0 0x2000000 ${ramdisk_image} && bootm 0x3000000 0x2000000 0x2A00000\0" \
++    "ethaddr=88:88:88:88:88:88\0" \
++    "nav_code=0\0" \
++    "hw_rev=0\0" \
++    "serial=0\0"
++
+ #endif /* __CONFIG_ZYNQ_RED_PITAYA_H */