ARMv8 32-bit compiler tunings
PATCH 1/1 ARMv8 32-bit compiler tunings
Hello!
Starting with linux-yocto-4.1, Intel provides kernel support for its ARM v8 Axxia platforms, both on 32-bit and 64-bit.
Poky already contains arm 64-bit compiler tunings, so I added 32-bit tunings based on those for armv7.
The patch that I send you is a draft. Please review it and if it's ok I will return with thumb and big-endian tunings.
Thank you,
Cristian Bercaru (1):
add tunings for 32-bit ARMv8-a
meta/conf/machine/include/arm/arch-armv7a.inc | 1 - meta/conf/machine/include/arm/arch-armv8a.inc | 65 ++++++++++++++++++++ meta/conf/machine/include/arm/feature-arm-neon.inc | 3 - meta/conf/machine/include/arm/feature-arm-vfp.inc | 59 ++++++++++++++---- 4 files changed, 112 insertions(+), 16 deletions(-) create mode 100644 meta/conf/machine/include/arm/arch-armv8a.inc delete mode 100644 meta/conf/machine/include/arm/feature-arm-neon.inc
Signature · 1 line
1.7.9.5
PATCH 1/1 add tunings for 32-bit ARMv8-a
This patch adds tunes for 32-bit armv8 platforms. The used can select the vector floating-point instruction set: vfpv3, vfpv4 or fp-armv8 and the Neon, crc and crypto extensions.
Signed-off-by Cristian Bercaru <[email protected]>
--- meta/conf/machine/include/arm/arch-armv7a.inc | 1 - meta/conf/machine/include/arm/arch-armv8a.inc | 65 ++++++++++++++++++++ meta/conf/machine/include/arm/feature-arm-neon.inc | 3 - meta/conf/machine/include/arm/feature-arm-vfp.inc | 59 ++++++++++++++---- 4 files changed, 112 insertions(+), 16 deletions(-) create mode 100644 meta/conf/machine/include/arm/arch-armv8a.inc delete mode 100644 meta/conf/machine/include/arm/feature-arm-neon.inc
meta/conf/machine/include/arm/arch-armv7a.inc +0 -1
@@ -6,7 +6,6 @@ TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "armv7a", " -march=armv7-a MACHINEOVERRIDES =. "${@bb.utils.contains("TUNE_FEATURES", "armv7a", "armv7a:", "" ,d)}" require conf/machine/include/arm/arch-armv6.inc -require conf/machine/include/arm/feature-arm-neon.inc # Little Endian base configs AVAILTUNES += "armv7a armv7at armv7a-vfpv3d16 armv7at-vfpv3d16 armv7a-vfpv3 armv7at-vfpv3 armv7a-neon armv7at-neon"
meta/conf/machine/include/arm/arch-armv8a.inc new file +65 -0
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meta/conf/machine/include/arm/feature-arm-neon.inc deleted +0 -3
@@ -1,3 +0,0 @@ -TUNEVALID[neon] = "Enable Neon SIMD accelerator unit." -TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "neon", bb.utils.contains("TUNE_FEATURES", "vfpv4", " -mfpu=neon-vfpv4", " -mfpu=neon", d), "" , d)}" -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "neon", "-neon", "", d)}"
meta/conf/machine/include/arm/feature-arm-vfp.inc +47 -12
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Signature · 1 line
1.7.9.5
Re: [PATCH] add tunings for 32-bit ARMv8-a
Quoted 3 lines · Cristian Bercaru
This patch adds tunes for 32-bit armv8 platforms. The used can select the vector floating-point instruction set: vfpv3, vfpv4 or fp-armv8 and the Neon, crc and crypto extensions.
Wrong ML, it belongs to oe-core ML.
Please check this patchset:
http://git.openembedded.org/openembedded-core-contrib/log/?h=jansa/tune3
and test script provided in:
http://git.openembedded.org/openembedded-core-contrib/log/?h=jansa/tune2-test
It was sent couple months ago, you can find the discussion in various threads, e.g.:
http://lists.openembedded.org/pipermail/openembedded-core/2015-October/111318.html
http://lists.openembedded.org/pipermail/openembedded-core/2015-November/112907.html
It fixes some of these issues and simplifies implementing the rest.
Quoted 114 lines
Signed-off-by Cristian Bercaru <[email protected]>--- meta/conf/machine/include/arm/arch-armv7a.inc | 1 - meta/conf/machine/include/arm/arch-armv8a.inc | 65 ++++++++++++++++++++ meta/conf/machine/include/arm/feature-arm-neon.inc | 3 - meta/conf/machine/include/arm/feature-arm-vfp.inc | 59 ++++++++++++++---- 4 files changed, 112 insertions(+), 16 deletions(-) create mode 100644 meta/conf/machine/include/arm/arch-armv8a.inc delete mode 100644 meta/conf/machine/include/arm/feature-arm-neon.incmeta/conf/machine/include/arm/arch-armv7a.inc +0
-1@@ -6,7 +6,6 @@ TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "armv7a", " -march=armv7-a MACHINEOVERRIDES =. "${@bb.utils.contains("TUNE_FEATURES", "armv7a", "armv7a:", "" ,d)}" require conf/machine/include/arm/arch-armv6.inc -require conf/machine/include/arm/feature-arm-neon.inc # Little Endian base configs AVAILTUNES += "armv7a armv7at armv7a-vfpv3d16 armv7at-vfpv3d16 armv7a-vfpv3 armv7at-vfpv3 armv7a-neon armv7at-neon"meta/conf/machine/include/arm/arch-armv8a.inc new file +65
-0@@ -0,0 +1,65 @@ +DEFAULTTUNE ?= "armv8a" + +TUNEVALID[armv8a] = "Enable instructions for ARMv8-a" +TUNEVALID[crc] = "Enable CRC instrucitons for ARMv8-a" +TUNECONFLICTS[armv8a] = "armv4 armv5 armv6 armv7 armv7a" +TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "armv8a", " -march=armv8-a", "", d)}" +TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "crc", "+crc", "", d)}" +MACHINEOVERRIDES =. "${@bb.utils.contains("TUNE_FEATURES", "armv8a", "armv8a:", "" ,d)}" + +require conf/machine/include/arm/arch-armv7a.inc + +# Little Endian base configs +AVAILTUNES += "armv8a armv8a-vfpv3 armv8a-neon armv8a-vfpv4 armv8a-neon-vfpv4 armv8a-fp-armv8 armv8a-neon-fp-armv8 armv8a-crypto-neon-fp-armv8" +ARMPKGARCH_tune-armv8a ?= "armv8a" +ARMPKGARCH_tune-armv8a-vfpv3 ?= "armv8a" +ARMPKGARCH_tune-armv8a-neon ?= "armv8a" +ARMPKGARCH_tune-armv8a-vfpv4 ?= "armv8a" +ARMPKGARCH_tune-armv8a-neon-vfpv4 ?= "armv8a" +ARMPKGARCH_tune-armv8a-fp-armv8 ?= "armv8a" +ARMPKGARCH_tune-armv8a-neon-fp-armv8 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crypto-neon-fp-armv8 ?= "armv8a" +TUNE_FEATURES_tune-armv8a ?= "arm armv8a vfp" +TUNE_FEATURES_tune-armv8a-vfpv3 ?= "${TUNE_FEATURES_tune-armv8a} vfpv3" +TUNE_FEATURES_tune-armv8a-neon ?= "${TUNE_FEATURES_tune-armv8a} neon" +TUNE_FEATURES_tune-armv8a-vfpv4 ?= "${TUNE_FEATURES_tune-armv8a} vfpv4" +TUNE_FEATURES_tune-armv8a-neon-vfpv4 ?= "${TUNE_FEATURES_tune-armv8a} neon vfpv4" +TUNE_FEATURES_tune-armv8a-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a} fp-armv8" +TUNE_FEATURES_tune-armv8a-neon-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a} neon fp-armv8" +TUNE_FEATURES_tune-armv8a-crypto-neon-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a} crypto neon fp-armv8" +PACKAGE_EXTRA_ARCHS_tune-armv8a = "${PACKAGE_EXTRA_ARCHS_tune-armv7a} armv8a armv8a-vfp" +PACKAGE_EXTRA_ARCHS_tune-armv8a-vfpv3 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a} armv8a-vfp-vfpv3" +PACKAGE_EXTRA_ARCHS_tune-armv8a-neon = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-vfpv3} armv8a-vfp-neon" +PACKAGE_EXTRA_ARCHS_tune-armv8a-vfpv4 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-vfpv3} armv8a-vfp-vfpv4" +PACKAGE_EXTRA_ARCHS_tune-armv8a-neon-vfpv4 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-vfpv4} armv8a-vfp-neon armv8a-vfp-neon-vfpv4" +PACKAGE_EXTRA_ARCHS_tune-armv8a-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a} armv8a-vfp-fp-armv8" +PACKAGE_EXTRA_ARCHS_tune-armv8a-neon-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-fp-armv8} armv8a-vfp-neon-fp-armv8" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crypto-neon-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-neon-fp-armv8} armv8a-vfp-crypto-neon-fp-armv8" + +# CRC configs +AVAILTUNES += "armv8a-crc armv8a-crc-vfpv3 armv8a-crc-neon armv8a-crc-vfpv4 armv8a-crc-neon-vfpv4 armv8a-crc-fp-armv8 armv8a-crc-neon-fp-armv8 armv8a-crc-crypto-neon-fp-armv8" +ARMPKGARCH_tune-armv8a-crc ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-vfpv3 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-neon ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-vfpv4 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-neon-vfpv4 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-fp-armv8 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-neon-fp-armv8 ?= "armv8a" +ARMPKGARCH_tune-armv8a-crc-crypto-neon-fp-armv8 ?= "armv8a" +TUNE_FEATURES_tune-armv8a-crc ?= "${TUNE_FEATURES_tune-armv8a} crc" +TUNE_FEATURES_tune-armv8a-crc-vfpv3 ?= "${TUNE_FEATURES_tune-armv8a-vfpv3} crc" +TUNE_FEATURES_tune-armv8a-crc-neon ?= "${TUNE_FEATURES_tune-armv8a-neon} crc" +TUNE_FEATURES_tune-armv8a-crc-vfpv4 ?= "${TUNE_FEATURES_tune-armv8a-vfpv4} crc" +TUNE_FEATURES_tune-armv8a-crc-neon-vfpv4 ?= "${TUNE_FEATURES_tune-armv8a-neon-vfpv4} crc" +TUNE_FEATURES_tune-armv8a-crc-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a-fp-armv8} crc" +TUNE_FEATURES_tune-armv8a-crc-neon-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a-neon-fp-armv8} crc" +TUNE_FEATURES_tune-armv8a-crc-crypto-neon-fp-armv8 ?= "${TUNE_FEATURES_tune-armv8a-crypto-neon-fp-armv8} crc" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc = "${PACKAGE_EXTRA_ARCHS_tune-armv8a} armv8a-crc-vfp" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-vfpv3 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc} armv8a-vfp-vfpv3 armv8a-crc-vfp-vfpv3" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-neon = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-vfpv3} armv8a-vfp-neon armv8a-crc-vfp-neon" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-vfpv4 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-vfpv3} armv8a-vfp-vfpv4 armv8a-crc-vfp-vfpv4" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-neon-vfpv4 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-vfpv4} armv8a-vfp-neon armv8a-crc-vfp-neon armv8a-vfp-neon-vfpv4 armv8a-crc-vfp-neon-vfpv4" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc} armv8a-vfp-fp-armv8 armv8a-vfp-fp-crc-armv8" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-neon-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-fp-armv8} armv8a-vfp-neon-fp-armv8 armv8a-crc-vfp-neon-fp-armv8" +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-crypto-neon-fp-armv8 = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-neon-fp-armv8} armv8a-vfp-crypto-neon-fp-armv8 armv8a-crc-vfp-crypto-neon-fp-armv8" +meta/conf/machine/include/arm/feature-arm-neon.inc deleted +0
-3@@ -1,3 +0,0 @@ -TUNEVALID[neon] = "Enable Neon SIMD accelerator unit." -TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "neon", bb.utils.contains("TUNE_FEATURES", "vfpv4", " -mfpu=neon-vfpv4", " -mfpu=neon", d), "" , d)}" -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "neon", "-neon", "", d)}"meta/conf/machine/include/arm/feature-arm-vfp.inc +0
-5@@ -1,17 +1,52 @@ TUNEVALID[vfp] = "Enable Vector Floating Point (vfp) unit." -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "vfp", "-vfp", "" ,d)}" - TUNEVALID[vfpv3d16] = "Enable Vector Floating Point Version 3 with 16 registers (vfpv3-d16) unit." -TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "vfpv3d16", " -mfpu=vfpv3-d16", "", d)}" -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "vfpv3d16", "-vfpv3d16", "" ,d)}" -
meta/conf/machine/include/arm/feature-arm-vfp.inc line 7
Quoted 10 lines
meta/conf/machine/include/arm/feature-arm-vfp.inc +3
-5TUNEVALID[vfpv3] = "Enable Vector Floating Point Version 3 with 32 registers (vfpv3) unit." -TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "vfpv3", " -mfpu=vfpv3", "", d)}" -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "vfpv3", "-vfpv3", "" ,d)}" - TUNEVALID[vfpv4] = "Enable Vector Floating Point Version 4 (vfpv4) unit." -ARMPKGSFX_FPU .= "${@bb.utils.contains("TUNE_FEATURES", "vfpv4", "-vfpv4", "" ,d)}" - +TUNEVALID[fp-armv8] = "Enable ARMv8 Vector Floating Point unit." +TUNEVALID[neon] = "Enable vfpv3 and Neon SIMD accelerator unit." +TUNEVALID[crypto] = "Enable ARMv8 crypto extension."
feature-arm-vfp.inc is included in armv5.inc, so it makes a lot of these features added to TUNEVALID actually invalid for armv[56] MACHINEs.
Quoted 55 lines
meta/conf/machine/include/arm/feature-arm-vfp.inc +44
-2TUNEVALID[callconvention-hard] = "Enable EABI hard float call convention, requires VFP." -TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "vfp", bb.utils.contains("TUNE_FEATURES", "callconvention-hard", " -mfloat-abi=hard", " -mfloat-abi=softfp", d), "" ,d)}" -ARMPKGSFX_EABI .= "${@bb.utils.contains("TUNE_FEATURES", [ "callconvention-hard", "vfp" ], "hf", "", d)}" + +python () { + if bb.utils.contains("TUNE_FEATURES", "crc", True, False, d): + d.appendVar("ARMPKGSFX_FPU", "-crc") + + if bb.utils.contains("TUNE_FEATURES", "vfp", True, False, d): + d.appendVar("ARMPKGSFX_FPU", "-vfp") + + if bb.utils.contains("TUNE_FEATURES", "vfpv3d16", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfpu=vfpv3-d16") + d.appendVar("ARMPKGSFX_FPU", "-vfpv3d16") + + if bb.utils.contains("TUNE_FEATURES", "vfpv3", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfpu=vfpv3") + d.appendVar("ARMPKGSFX_FPU", "-vfpv3") + elif bb.utils.contains("TUNE_FEATURES", "vfpv4", True, False, d): + if bb.utils.contains("TUNE_FEATURES", "neon", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfpu=neon-vfpv4") + d.appendVar("ARMPKGSFX_FPU", "-neon-vfpv4") + else: + d.appendVar("TUNE_CCARGS", " -mfpu=vfpv4") + d.appendVar("ARMPKGSFX_FPU", "-vfpv4") + elif bb.utils.contains("TUNE_FEATURES", "fp-armv8", True, False, d): + if bb.utils.contains("TUNE_FEATURES", "neon", True, False, d): + if bb.utils.contains("TUNE_FEATURES", "crypto", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfpu=crypto-neon-fp-armv8") + d.appendVar("ARMPKGSFX_FPU", "-crypto-neon-fp-armv8") + else: + d.appendVar("TUNE_CCARGS", " -mfpu=neon-fp-armv8") + d.appendVar("ARMPKGSFX_FPU", "-neon-fp-armv8") + else: + d.appendVar("TUNE_CCARGS", " -mfpu=fp-armv8") + d.appendVar("ARMPKGSFX_FPU", "-fp-armv8") + elif bb.utils.contains("TUNE_FEATURES", "neon", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfpu=neon") + d.appendVar("ARMPKGSFX_FPU", "-neon") + + if bb.utils.contains("TUNE_FEATURES", "callconvention-hard", True, False, d): + d.appendVar("TUNE_CCARGS", " -mfloat-abi=hard") + else: + d.appendVar("TUNE_CCARGS", " -mfloat-abi=softfp") + if bb.utils.contains("TUNE_FEATURES", [ "vfp", "callconvention-hard" ], True, False, d): + d.appendVar("ARMPKGSFX_EABI", "hf") +}Signature · 7 lines
1.7.9.5 -- _______________________________________________ poky mailing list [email protected] https://lists.yoctoproject.org/listinfo/poky
Signature · 1 line
Martin 'JaMa' Jansa jabber: [email protected]
So, what do you guys think about my patch? Is the armv8a support a valuable addition to poky?
Cristian
Quoted 22 lines · Cristian Bercaru
Hello!
Starting with linux-yocto-4.1, Intel provides kernel support for its ARM v8 Axxia platforms, both on 32-bit and 64-bit.
Poky already contains arm 64-bit compiler tunings, so I added 32-bit tunings based on those for armv7.The patch that I send you is a draft. Please review it and if it's ok I will return with thumb and big-endian tunings.
Thank you,
Cristian Bercaru (1):
add tunings for 32-bit ARMv8-ameta/conf/machine/include/arm/arch-armv7a.inc | 1 - meta/conf/machine/include/arm/arch-armv8a.inc | 65 ++++++++++++++++++++ meta/conf/machine/include/arm/feature-arm-neon.inc | 3 - meta/conf/machine/include/arm/feature-arm-vfp.inc | 59 ++++++++++++++---- 4 files changed, 112 insertions(+), 16 deletions(-)create mode 100644 meta/conf/machine/include/arm/arch-armv8a.inc delete mode 100644 meta/conf/machine/include/arm/feature-arm-neon.inc