Merge pull request #16 from dwesterg/master

Update README with information regarding kernel selection

1 files changed, 27 insertions, 0 deletions

diff --git a/README.md b/README.md
index 74d6c75..a6bc000 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,30 @@ and raj.khem@gmail.com
 
 Maintainers: Khem Raj <raj.khem@gmail.com>
              Yves Vandervennet <yvanderv@opensource.altera.com>
+
+Specifying Kernel Version
+=========================
+This layer has a few providers for the kernel.  These are the linux-altera, 
+linux-altera-ltsi, and linux-altera-ltsi-rt kernels.  There are also 
+linux-altera-dev and linux-altera-ltsi-dev kernels which follow the current 
+development versions of those kernels.
+
+To specify a linux-altera kernel, add the following to your conf/local.conf
+
+        PREFERRED_PROVIDER_virtual/kernel = "linux-altera"
+        PREFERRED_VERSION_linux-altera = "4.3%"
+
+or for the linux-altera-ltsi kernel     
+
+        PREFERRED_PROVIDER_virtual/kernel = "linux-altera-ltsi"
+        PREFERRED_VERSION_linux-alterai-ltsi = "3.10%"
+
+Please note that older kernels will not compile with GCC 5+ and you will need 
+to specify in your conf/local.conf to revert to older 4.9 toolchain. 
+
+        GCCVERSION = "4.9%"
+
+        or
+
+        ANGSTROM_GCC_VERSION_arm = "linaro-4.9%"
+