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arch/csky: specify BR2_GCC_TARGET_FLOAT_ABI

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The C-SKY architecture uses two different ABIs, depending on the core
being used:

 - "abiv1" is a mcore based ISA with ELF_NUM:39 and does not support
   FPU & VDSP. It is used only for the ck610 core.

 - "abiv2" is C-SKY's own ISA with ELF_NUM:252 and supports FPU &
   VDSP. It is used for the ck807, ck810, ck860 cores.

Since "abiv1" does not support FPU, BR2_GCC_TARGET_FLOAT_ABI will
always have the value "soft" for the ck610 core.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[Thomas: rework commit log]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Guo Ren 2019-05-31 14:39:01 +08:00 committed by Thomas Petazzoni
parent d2658caea0
commit a9b722732d
1 changed files with 4 additions and 0 deletions
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arch/Config.in.csky
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@ -27,6 +27,10 @@ config BR2_CSKY_VDSP
bool "Enable VDSP enhanced instructions Co-processor"
depends on BR2_CSKY_FPU
config BR2_GCC_TARGET_FLOAT_ABI
default "soft" if !BR2_CSKY_FPU
default "hard" if BR2_CSKY_FPU
config BR2_ARCH
default "csky"