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authorAndre McCurdy <armccurdy@gmail.com>2018-05-18 15:50:40 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-06-28 09:22:35 +0100
commit3e7d26e31a724009e69788460737e07163a14051 (patch)
tree5f09084cfd5a3cdc2bb7359904d01ff04a6b2be5 /meta/conf/machine/include/arm/arch-armv7a.inc
parent16f060c56f509ab1c4a77dfbe02d5cd77c977d54 (diff)
downloadpoky-3e7d26e31a724009e69788460737e07163a14051.tar.gz
arch-armv7a.inc: default to Thumb2 instruction set for armv7a and above
Although there may still be specific cases which can benefit from the ARM instruction set, the Thumb2 instruction set is generally a better default for armv7a class CPUs. Distros such as Debian and Fedora have been targeting Thumb2 by default for some time. Note that setting ARM_INSTRUCTION_SET has no effect unless TUNE_FEATURES contains "thumb" (which is controlled by the "t" suffix in DEFAULTTUNE, e.g. armv7vehf-neon -vs- armv7vethf-neon, etc) so out of tree machine configs may need to update their DEFAULTTUNE to take advantage of this change. (From OE-Core rev: c88304a78e528596ca481cabe273749c286c352a) Signed-off-by: Andre McCurdy <armccurdy@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/conf/machine/include/arm/arch-armv7a.inc')
-rw-r--r--meta/conf/machine/include/arm/arch-armv7a.inc1
1 files changed, 1 insertions, 0 deletions
diff --git a/meta/conf/machine/include/arm/arch-armv7a.inc b/meta/conf/machine/include/arm/arch-armv7a.inc
index bad1c27059..a2663d8008 100644
--- a/meta/conf/machine/include/arm/arch-armv7a.inc
+++ b/meta/conf/machine/include/arm/arch-armv7a.inc
@@ -1,4 +1,5 @@
1DEFAULTTUNE ?= "armv7athf" 1DEFAULTTUNE ?= "armv7athf"
2ARM_INSTRUCTION_SET ?= "thumb"
2 3
3TUNEVALID[armv7a] = "Enable instructions for ARMv7-a" 4TUNEVALID[armv7a] = "Enable instructions for ARMv7-a"
4TUNECONFLICTS[armv7a] = "armv4 armv5 armv6 armv7" 5TUNECONFLICTS[armv7a] = "armv4 armv5 armv6 armv7"