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authorGravatar Guido Martínez <guido@vanguardiasur.com.ar>2015-06-03 19:34:04 -0300
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2015-06-09 22:51:14 +0200
commit22d5501e03b019218b718b5de7ca74824a8eaf42 (patch)
treeac611fe6403c724fa9b1c0625f4bd47a237c5325 /arch
parent29563047e074a7c0b73c9e6b629d08bac1e07cb5 (diff)
downloadbuildroot-22d5501e03b019218b718b5de7ca74824a8eaf42.tar.gz
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arch: tidy up binary formats config
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/Config.in16
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/Config.in b/arch/Config.in
index 3ad9574915..94397b34c6 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -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