[Buildroot] [PATCH v2 1/6] arm: update processor types
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Mon May 18 20:05:12 UTC 2015
Dear Guido Martínez,
On Mon, 18 May 2015 11:24:43 -0300, Guido Martínez wrote:
> config BR2_USE_MMU
> - bool "Enable MMU support" if BR2_arm || BR2_armeb || BR2_sh || BR2_xtensa
> - default y if !BR2_bfin
> + bool "Enable MMU support"
> + depends on BR2_arm || BR2_armeb || BR2_sh || BR2_xtensa
> + depends on !BR2_cortex_m3 && !BR2_bfin
This breaks things, because now BR2_USE_MMU is empty on architectures
others than arm, armeb, sh and xtensa.
What we probably need is something like this:
config BR2_ARCH_MMU_OPTIONAL
bool
config BR2_ARCH_MMU_MANDATORY
bool
and have all ARM cores select BR2_ARCH_MMU_OPTIONAL except Cortex M3,
SuperH and Xtensa select BR2_ARCH_MMU_OPTIONAL, all other architectures
except Blackfin selecting BR2_ARCH_MMU_MANDATORY.
And then:
bool "Enable MMU support" if BR2_ARCH_MMU_OPTIONAL
default y if BR2_ARCH_MMU_MANDATORY || BR2_ARCH_MMU_OPTIONAL
or something like that.
Thomas
--
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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