Update buildroot 2020.02.01 (#622)

* Update buildroot 2020.02.01

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Fix LN

* Fix wpa

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Fix lint

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* fix-network

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Fix script

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

buildroot/board/sifive/hifive-unleashed/readme.txt

@@ -0,0 +1,75 @@
+SiFive HiFive Unleashed
+=======================
+
+This file describes how to use the pre-defined Buildroot
+configuration for the SiFive HiFive Unleashed board.
+
+Further information about the HiFive Unleashed board can be found
+at https://www.sifive.com/boards/hifive-unleashed
+
+Building
+========
+
+Configure Buildroot using the default board configuration:
+
+  $ make hifive_unleashed_defconfig
+
+Customise the build as necessary:
+
+  $ make menuconfig
+
+Start the build:
+
+  $ make
+
+Result of the build
+===================
+
+Once the build has finished you will have the following files:
+
+    output/images/
+    +-- fw_jump.bin
+    +-- fw_jump.elf
+    +-- fw_payload.bin
+    +-- fw_payload.elf
+    +-- Image
+    +-- rootfs.ext2
+    +-- rootfs.ext4
+    +-- rootfs.tar
+    +-- sdcard.img
+
+
+Creating a bootable SD card with genimage
+=========================================
+
+Buildroot builds a SD card image for you. All you need to do is dd the
+image to your SD card, which can be done with the following command:
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/mmcblk0 bs=4096
+
+Booting the SD card on the board
+================================
+
+Make sure that the all DIP switches are set to the off position for
+default boot mode (MSEL mode = 1111), insert the SD card and power
+up the board.
+
+Connect the USB cable and open minicom (/dev/ttyUSB1, 115200, 8N1).
+
+See the 'SiFive HiFive Unleashed Getting Started Guide' for
+more details (https://www.sifive.com/documentation).
+
+You will get a warning reported by fdisk when you examine the SD card.
+This is because the genimage.cfg file doesn't specify the SD card size
+(as people will naturally have different sized cards), so the
+secondary GPT header is placed after the rootfs rather than at the end
+of the disk where it is expected to be.
+
+You will see something like this at boot time:
+
+[    2.318722] GPT:Primary header thinks Alt. header is not at the end of the disk.
+[    2.325390] GPT:190496 != 122142719
+[    2.328843] GPT:Alternate GPT header not at the end of the disk.
+[    2.334824] GPT:190496 != 122142719
+[    2.338302] GPT: Use GNU Parted to correct GPT errors.
+[    2.343456]  mmcblk0: p1 p2