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arch: tidy up binary formats config

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Instead of (black)listing architectures when deciding the binary format,
we can enable the ELF format only when using an MMU and FLAT only when
we're not. This mimics the logic in the Linux kernel for user binaries
support.

For FDPIC, we introduce a Kconfig option to enable its selection, and
have blackfin select it.

Signed-off-by: Guido Martínez <guido@vanguardiasur.com.ar>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Guido Martínez 2015-06-03 19:34:04 -03:00 committed by Thomas Petazzoni
parent 29563047e0
commit 22d5501e03
1 changed files with 10 additions and 6 deletions
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16
arch/Config.in
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@ -15,6 +15,9 @@ config BR2_ARCH_HAS_MMU_MANDATORY
config BR2_ARCH_HAS_MMU_OPTIONAL
bool
config BR2_ARCH_HAS_FDPIC_SUPPORT
bool
choice
prompt "Target Architecture"
default BR2_i386
@ -66,6 +69,7 @@ config BR2_aarch64
config BR2_bfin
bool "Blackfin"
select BR2_ARCH_HAS_FDPIC_SUPPORT
help
The Blackfin is a family of 16 or 32-bit microprocessors developed,
manufactured and marketed by Analog Devices.
@ -272,13 +276,13 @@ config BR2_BINFMT_SUPPORTS_SHARED
# Set up target binary format
choice
prompt "Target Binary Format"
default BR2_BINFMT_ELF if !(BR2_bfin || BR2_m68k)
default BR2_BINFMT_FDPIC if BR2_bfin
default BR2_BINFMT_FLAT if BR2_m68k
default BR2_BINFMT_ELF if BR2_USE_MMU
default BR2_BINFMT_FDPIC if BR2_ARCH_HAS_FDPIC_SUPPORT
default BR2_BINFMT_FLAT
config BR2_BINFMT_ELF
bool "ELF"
depends on !BR2_bfin && !BR2_m68k
depends on BR2_USE_MMU
select BR2_BINFMT_SUPPORTS_SHARED
help
ELF (Executable and Linkable Format) is a format for libraries and
@ -287,7 +291,7 @@ config BR2_BINFMT_ELF
config BR2_BINFMT_FDPIC
bool "FDPIC"
depends on BR2_bfin
depends on BR2_ARCH_HAS_FDPIC_SUPPORT
select BR2_BINFMT_SUPPORTS_SHARED
help
ELF FDPIC binaries are based on ELF, but allow the individual load
@ -297,7 +301,7 @@ config BR2_BINFMT_FDPIC
config BR2_BINFMT_FLAT
bool "FLAT"
depends on BR2_bfin || BR2_m68k
depends on !BR2_USE_MMU
help
FLAT binary is a relatively simple and lightweight executable format
based on the original a.out format. It is widely used in environment