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FS#867 - mvebu: Should be split different arches, current (Armada 370, XP and other "legacy") and 385+ #785

Open aparcar opened 7 years ago

aparcar commented 7 years ago

diizzyy:

The older SoCs such as Armada XP and 370 only supports vfpv3-d16 while 385 and newer does complete vfpv3 and neon. This hampers performance of newer SoCs quite a bit and makes little sense not to split these since we already build vfpv3+neon binaries. While neon-vfpv4 exists, neon-vfpv3 doesn't and for some reason it's just called neon in GCC (which translates to arm_cortex-a9_neon in LEDE for this SoC family). Source: https://lists.linaro.org/pipermail/linaro-toolchain/2016-July/005826.html

aparcar commented 7 years ago

anomeome:

Limiting to lowest common [[https://forum.lede-project.org/t/new-package-arch-for-mvebu/4235|denominator]] to reduce target count appears to be a significant penalty for the majority of mvebu targets.

aparcar commented 4 years ago

FrederickZh:

brand model target subtarget packagearchitecture cpu FPU/SIMD Globalscale Mirabox mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell 88F6707 VFPv3-D16/? Marvell RD-A370-A1 mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 370 VFPv3-D16/? SolidRun ClearFog Pro mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 388 88F6828 VFPv3-D32/NEON SolidRun ClearFog Base mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 388 88F6828 VFPv3-D32/NEON Linksys WRT1200AC mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Linksys WRT1900AC v2 mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Linksys WRT1900ACS mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Linksys WRT3200ACM mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Turris CZ.NIC Omnia mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Linksys WRT32X mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Marvell Armada A385 DB AP mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada 385 88F6820 VFPv3-D32/NEON Marvell Armada A370 DB mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada A370 VFPv3-D16/? Linksys WRT1900AC v1 mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada XP MV78230 VFPv3-D16/? PlatHome OpenBlocks AX3-4 mvebu cortexa9 arm_cortex-a9_vfpv3 Marvell Armada XP MV78260 VFPv3-D16/?

I just downloaded a copy of the supported devices CSV. There are currently only 5 vfp3-d16 devices, among which RD-A370-A1 and Armada A370 DB are reference boards and WRT1900AC has got a v2 that according to OpenWRT DB was released in the same year (2018). So I reckon it's reasonable to even drop vfp3-d16 if the number of officially built architectures is a concern (sorry PlatHome and Globalscale guys).