README.booting.md: Update and add notes
Remove mention of 'u-boot-dtb.img' which is no longer generated.
Add a small paragraph directing users to look at the Yocto dev manual
for information about generating partitioned/disk images with wic.
@@ -142,12 +142,17 @@ It is recommended that the first partition be at least 64MB in size, however
this value will depend on whether using a ramdisk for the root filesystem and
how large the ramdisk is.
+This section describes how to manually prepare and populate an SD card image.
+There are automation tools in OpenEmbedded that can generate disk images already
+formatted and prepared such that they can be written directly to a disk. Refer
+to the Yocto Project Development Manual for more details:
+ http://www.yoctoproject.org/docs/current/dev-manual/dev-manual.html#creating-partitioned-images
+
### Installing U-Boot
Add the following files to the first partition:
* `boot.bin`
-* `u-boot.img` (if using u-boot-xlnx)
-* `u-boot-dtb.img` (if using u-boot)
+* `u-boot.img`
### Installing Kernel and Device Tree
Add the following files to the first partition:
