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Add ARM tune file overhaul based largely on work from Mark Hatle

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(From OE-Core rev: 789dcb8e68a2ab9784ac10ab36815010c61af2fc)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2011-07-25 19:03:24 +01:00
parent 30ddd02277
commit 6afd21bced
24 changed files with 434 additions and 76 deletions
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meta/conf/machine/include/tune-cortexa8.inc
+11 -10
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@@ -1,15 +1,16 @@
require conf/machine/include/arm/arch-arm.inc
DEFAULTTUNE ?= "cortexa8-neon"
require conf/machine/include/arm/arch-armv7a.inc
# 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
# [3] https://support.codesourcery.com/GNUToolchain/kbentry29
TUNEVALID[cortexa8] = "Enable Cortex-A8 specific processor optimizations"
TUNE_CCARGS += "${@bb.utils.contains("TUNE_FEATURES", "cortexa8", "-mtune=cortex-a8", "", d)}"
TUNE_CCARGS = "-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -fno-tree-vectorize"
AVAILTUNES += "cortexa8 cortexa8t"
TUNE_FEATURES_tune-cortexa8 = "${TUNE_FEATURES_tune-armv7a} cortexa8"
TUNE_FEATURES_tune-cortexa8t = "${TUNE_FEATURES_tune-armv7at} cortexa8"
TUNE_FEATURES_tune-cortexa8-neon = "${TUNE_FEATURES_tune-cortexa8} neon"
# Other potentially useful options
#-ftree-vectorize -ffast-math -fno-omit-frame-pointer
PACKAGE_EXTRA_ARCHS_tune-cortexa8 = "${PACKAGE_EXTRA_ARCHS_tune-armv7at}"
PACKAGE_EXTRA_ARCHS_tune-cortexa8t = "${PACKAGE_EXTRA_ARCHS_tune-armv7at}"
PACKAGE_EXTRA_ARCHS_tune-cortexa8-neon = "${PACKAGE_EXTRA_ARCHS_tune-armv7at-neon}"
TUNE_PKGARCH = "armv7a"
PACKAGE_EXTRA_ARCHS = "arm armv4 armv4t armv5te armv6 armv7 armv7a"