Update buidlroot to version 2016.08.1

bsp/buildroot/board/freescale/warpboard/README

@@ -9,7 +9,9 @@ Build all components:
 
 You will find in ./output/images/ the following files:
   - imx6sl-warp.dtb
+  - rootfs.ext4
   - rootfs.tar
+  - sdcard.img
   - u-boot.imx
   - zImage
 
@@ -29,7 +31,7 @@ Update uboot
  => env default -f -a
  => saveenv
 
-- Run the DFU toocommand in U-Boot:
+- Run the DFU command in U-Boot:
  => dfu 0 mmc 0
 
 - Transfer U-Boot into flash by running this command in host side:
@@ -42,14 +44,16 @@ Update uboot
 Update linux & rootfs
 =====================
 
-Run the 'ums' command from the u6Boot prompt to mount the eMMC as mass
-storage and update zImage, device tree (imx6sl-warp.dtb) and rootfs
-file (rootfs.tar) :
+Run the 'ums' command from the U-Boot prompt to mount the eMMC as USB mass
+storage:
 
 => ums 0 mmc 0
 
-Put the zImage and DTB files in the warp-vfat partition and extract as
-root the rootfs.tar tarball in the warp-rootfs partition.
+And then flash the sdcard.img into the eMMC:
+
+  dd if=output/images/sdcard.img of=/dev/<your-sd-device>
+
+*** WARNING! This will destroy all the eMMC content. Use it with care! ***
 
 Using bluetooth
 ================
@@ -62,4 +66,12 @@ $ hciconfig hci0 up
 Using Wifi
 ==========
 
-$ ifconfig wlan0 up
+# modprobe brcmfmac
+# iwconfig wlan0 essid ACCESSPOINTNAME
+# wpa_passphrase ACCESSPOINTNAME > /etc/wpa.conf
+(enter the wifi password and press enter)
+# wpa_supplicant -Dwext -iwlan0 -c /etc/wpa.conf &
+# udhcpc -i wlan0
+# ping buildroot.org
+
+Enjoy!