arch: improve definition of gcc mtune, mcpu, etc.
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>
2012-11-14 20:53:48 -07:00
|
|
|
config BR2_ARCH
|
|
|
|
|
default "m68k" if BR2_m68k
|
|
|
|
|
|
|
|
|
|
config BR2_ENDIAN
|
|
|
|
|
default "BIG"
|
|
|
|
|
|
2016-03-19 13:04:10 -06:00
|
|
|
# coldfire variants will be added later
|
|
|
|
|
choice
|
|
|
|
|
prompt "Target CPU"
|
|
|
|
|
depends on BR2_m68k
|
|
|
|
|
default BR2_m68k_68040
|
|
|
|
|
help
|
|
|
|
|
Specific CPU variant to use
|
|
|
|
|
|
|
|
|
|
config BR2_m68k_68040
|
|
|
|
|
bool "68040"
|
|
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
|
|
|
|
|
config BR2_GCC_TARGET_CPU
|
2012-11-14 20:53:53 -07:00
|
|
|
default "68040" if BR2_m68k_68040
|
