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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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45
arch/Config.in.powerpc
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@@ -81,3 +81,48 @@ config BR2_powerpc_SPE
bool "SPE"
depends on BR2_powerpc_8540 || BR2_powerpc_8548
endchoice
config BR2_ARCH
default "powerpc" if BR2_powerpc
config BR2_ENDIAN
default "BIG"
config BR2_GCC_TARGET_TUNE
default 401 if BR2_powerpc_401
default 403 if BR2_powerpc_403
default 405 if BR2_powerpc_405
default 405fp if BR2_powerpc_405fp
default 440 if BR2_powerpc_440
default 440fp if BR2_powerpc_440fp
default 505 if BR2_powerpc_505
default 601 if BR2_powerpc_601
default 602 if BR2_powerpc_602
default 603 if BR2_powerpc_603
default 603e if BR2_powerpc_603e
default 604 if BR2_powerpc_604
default 604e if BR2_powerpc_604e
default 620 if BR2_powerpc_620
default 630 if BR2_powerpc_630
default 740 if BR2_powerpc_740
default 7400 if BR2_powerpc_7400
default 7450 if BR2_powerpc_7450
default 750 if BR2_powerpc_750
default 801 if BR2_powerpc_801
default 821 if BR2_powerpc_821
default 823 if BR2_powerpc_823
default 860 if BR2_powerpc_860
default 970 if BR2_powerpc_970
default 8540 if BR2_powerpc_8540
default 8548 if BR2_powerpc_8548
default e300c2 if BR2_powerpc_e300c2
default e300c3 if BR2_powerpc_e300c3
default e500mc if BR2_powerpc_e500mc
config BR2_GCC_TARGET_ABI
default altivec if BR2_PPC_ABI_altivec
default no-altivec if BR2_PPC_ABI_no-altivec
default spe if BR2_PPC_ABI_spe
default no-spe if BR2_PPC_ABI_no-spe
default ibmlongdouble if BR2_PPC_ABI_ibmlongdouble
default ieeelongdouble if BR2_PPC_ABI_ieeelongdouble