conf/machine/tune: Overhaul tune include file variables

There is currently consideradble confusion over how the tune files operate
and how these interact with the rest of the build system. This update/overhaul
changes things so the tune files are primarily resonsible for setting:

TUNE_ARCH - What was formerly set as TARGET_ARCH and is the value that
represents the architecture we're targetting.

TUNE_PKGARCH - The value that represents the tune confuration that this set
of tune parameters results in.

This allows the significant improvement that the core can now always determine
the target architecture value, even when TARGET_ARCH needs to be reset to
something different and likewise, there is one package architecture variable
the core can reference allowing simplification of the BASE_PACKAGE_ARCH, PACKAGE_ARCH
and FEED_ARCH variables.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/meta/conf/machine/include/tune-cortexa8.inc b/meta/conf/machine/include/tune-cortexa8.inc
index a5b982ab78..cf5b418287 100644
--- a/meta/conf/machine/include/tune-cortexa8.inc
+++ b/meta/conf/machine/include/tune-cortexa8.inc
@@ -1,3 +1,5 @@
+TUNE_ARCH = "arm"
+
 # Instead of using -mfpu=vfp[2] we can use -mfpu=neon to make use of gcc intrinsics[1] and vectorize loops with -ftree-vectorize[3]
 # [1] http://gcc.gnu.org/onlinedocs/gcc/ARM-NEON-Intrinsics.html
 # [2] http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html 
@@ -8,6 +10,5 @@ TARGET_CC_ARCH = "-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
 # Other potentially useful options
 #-ftree-vectorize -ffast-math -fno-omit-frame-pointer
 
-FEED_ARCH = "armv7a"
-BASE_PACKAGE_ARCH = "armv7a"
+TUNE_PKGARCH = "armv7a"
 PACKAGE_EXTRA_ARCHS = "arm armv4 armv4t armv5te armv6 armv7 armv7a"