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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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31
arch/Config.in.sparc
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@@ -36,3 +36,34 @@ config BR2_sparc_sparclet
config BR2_sparc_tsc701
bool "tsc701"
endchoice
config BR2_ARCH
default "sparc" if BR2_sparc
config BR2_ENDIAN
default "BIG"
config BR2_GCC_TARGET_TUNE
default v7 if BR2_sparc_v7
default cypress if BR2_sparc_cypress
default v8 if BR2_sparc_v8
default supersparc if BR2_sparc_supersparc
default hypersparc if BR2_sparc_hypersparc
default sparclite if BR2_sparc_sparclite
default f930 if BR2_sparc_f930
default f934 if BR2_sparc_f934
default sparclite86x if BR2_sparc_sparclite86x
default sparclet if BR2_sparc_sparclet
default tsc701 if BR2_sparc_tsc701
default v9 if BR2_sparc_v9
default v9 if BR2_sparc_v9a
default v9 if BR2_sparc_v9b
default ultrasparc if BR2_sparc_ultrasparc
default ultrasparc3 if BR2_sparc_ultrasparc3
default niagara if BR2_sparc_niagara
config BR2_GCC_TARGET_CPU
default sparchfleon if BR2_sparc_sparchfleon
default sparchfleonv8 if BR2_sparc_sparchfleonv8
default sparcsfleon if BR2_sparc_sparcsfleon
default sparcsfleonv8 if BR2_sparc_sparcsfleonv8