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arch: improve definition of gcc mtune, mcpu, etc.

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As suggested by Yann E. Morin, there is a better way than our current
big Config.in.common to define the gcc mtune, mcpu, march,
etc. values. We can split the setting of those values in each
architecture file, which makes a lot more sense.

Therefore, the Config.in file now creates empty kconfig variables
BR2_ARCH, BR2_ENDIAN, BR2_GCC_TARGET_TUNE, BR2_GCC_TARGET_ARCH,
BR2_GCC_TARGET_ABI and BR2_GCC_TARGET_CPU. The values of those
variables are set by the individual Config.in.<arch> files. This is
possible because such files are now only conditionally included
depending on the top-level architecture that has been selected.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Thomas Petazzoni
2012-11-15 03:53:48 +00:00
committed by Peter Korsgaard
parent 53adfc5f49
commit 44c04a2b4a
13 changed files with 361 additions and 249 deletions
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89
arch/Config.in.x86
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@@ -144,3 +144,92 @@ config BR2_x86_winchip2
select BR2_X86_CPU_HAS_MMX
depends on !BR2_x86_64
endchoice
config BR2_ARCH
default "i386" if BR2_x86_i386
default "i486" if BR2_x86_i486
default "i586" if BR2_x86_i586
default "i586" if BR2_x86_pentium_mmx
default "i586" if BR2_x86_geode
default "i586" if BR2_x86_c3
default "i686" if BR2_x86_c32
default "i586" if BR2_x86_winchip_c6
default "i586" if BR2_x86_winchip2
default "i686" if BR2_x86_i686
default "i686" if BR2_x86_pentium2
default "i686" if BR2_x86_pentium3
default "i686" if BR2_x86_pentium4
default "i686" if BR2_x86_pentium_m
default "i686" if BR2_x86_pentiumpro
default "i686" if BR2_x86_prescott
default "i686" if BR2_x86_nocona && BR2_i386
default "i686" if BR2_x86_core2 && BR2_i386
default "i686" if BR2_x86_atom && BR2_i386
default "i686" if BR2_x86_opteron && BR2_i386
default "i686" if BR2_x86_opteron_sse3 && BR2_i386
default "i686" if BR2_x86_barcelona && BR2_i386
default "i686" if BR2_x86_k6
default "i686" if BR2_x86_k6_2
default "i686" if BR2_x86_athlon
default "i686" if BR2_x86_athlon_4
default "x86_64" if BR2_x86_64
config BR2_ENDIAN
default "LITTLE"
config BR2_GCC_TARGET_TUNE
default i386 if BR2_x86_i386
default i486 if BR2_x86_i486
default i586 if BR2_x86_i586
default pentium-mmx if BR2_x86_pentium_mmx
default i686 if BR2_x86_i686
default pentiumpro if BR2_x86_pentiumpro
default pentium-m if BR2_x86_pentium_m
default pentium2 if BR2_x86_pentium2
default pentium3 if BR2_x86_pentium3
default pentium4 if BR2_x86_pentium4
default prescott if BR2_x86_prescott
default nocona if BR2_x86_nocona
default core2 if BR2_x86_core2
default atom if BR2_x86_atom
default k8 if BR2_x86_opteron
default k8-sse3 if BR2_x86_opteron_sse3
default barcelona if BR2_x86_barcelona
default k6 if BR2_x86_k6
default k6-2 if BR2_x86_k6_2
default athlon if BR2_x86_athlon
default athlon-4 if BR2_x86_athlon_4
default winchip-c6 if BR2_x86_winchip_c6
default winchip2 if BR2_x86_winchip2
default c3 if BR2_x86_c3
default c3-2 if BR2_x86_c32
default geode if BR2_x86_geode
default generic if BR2_x86_generic
config BR2_GCC_TARGET_ARCH
default i386 if BR2_x86_i386
default i486 if BR2_x86_i486
default i586 if BR2_x86_i586
default pentium-mmx if BR2_x86_pentium_mmx
default i686 if BR2_x86_i686
default pentiumpro if BR2_x86_pentiumpro
default pentium-m if BR2_x86_pentium_m
default pentium2 if BR2_x86_pentium2
default pentium3 if BR2_x86_pentium3
default pentium4 if BR2_x86_pentium4
default prescott if BR2_x86_prescott
default nocona if BR2_x86_nocona
default core2 if BR2_x86_core2
default atom if BR2_x86_atom
default k8 if BR2_x86_opteron
default k8-sse3 if BR2_x86_opteron_sse3
default barcelona if BR2_x86_barcelona
default k6 if BR2_x86_k6
default k6-2 if BR2_x86_k6_2
default athlon if BR2_x86_athlon
default athlon-4 if BR2_x86_athlon_4
default winchip-c6 if BR2_x86_winchip_c6
default winchip2 if BR2_x86_winchip2
default c3 if BR2_x86_c3
default c3-2 if BR2_x86_c32
default geode if BR2_x86_geode