i. Mx6ul porting openwrt

One ： Prepare for transplantation

The core board is made of Feiling imx6ul, Download the latest kernel source code from Feiling ,linux-4.1.15

Openwrt It can be seen as a tool for making file systems , Help make it easier

Openwrt Support OPKG Package installation and uninstallation , Convenient for debugging and incremental upgrade

Uboot You can leave it at that , It doesn't help much , Just boot the system and set the startup parameters

Use LEDE Of v17.01  release Branch , It has been supported imx6, So we have imx6 It can be modified on the basis of .

Two ：LEDE 17.01 Source code Configuration modification

Mainly configuration ;

         First of all cpu framework , The original imx6 yes A9 framework ,i.mx6ul yes A7 framework , Therefore, it is amended as follows （git diff The way to give ）：

diff --git a/target/linux/imx6/Makefile b/target/linux/imx6/Makefile
index 5f7e17b..a7ac682 100644
--- a/target/linux/imx6/Makefile
+++ b/target/linux/imx6/Makefile
@@ -9,12 +9,12 @@ include $(TOPDIR)/rules.mk
 ARCH:=arm
 BOARD:=imx6
 BOARDNAME:=Freescale i.MX 6
-FEATURES:=audio display fpu gpio pcie rtc usb usbgadget squashfs targz nand ubifs
-CPU_TYPE:=cortex-a9
-CPU_SUBTYPE:=neon
+FEATURES:=fpu gpio usb usbgadget targz nand