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arch: remove Blackfin architecture

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The Blackfin architecture has for a long time been complicated to
maintain, with poor support in upstream binutils/gcc. As of April
2018, the Blackfin architecture has been dropped from the upstream
Linux kernel. Also, the Analog Device engineer who used to be in touch
with the Buildroot community also privately said we should drop the
support for this architecture, which Analog Devices is no longer
using, promoting and maintaining.

The BR2_BINFMT_FLAT_SEP_DATA option becomes unselectable, it will be
removed in a future commit.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Thomas Petazzoni
2018-04-05 21:50:17 +02:00
parent 373dac0423
commit 325bb37942
5 changed files with 10 additions and 120 deletions
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18
arch/Config.in
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@@ -78,16 +78,6 @@ config BR2_aarch64_be
http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php
http://en.wikipedia.org/wiki/ARM
config BR2_bfin
bool "Blackfin"
select BR2_ARCH_HAS_FDPIC_SUPPORT
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
help
The Blackfin is a family of 16 or 32-bit microprocessors
developed, manufactured and marketed by Analog Devices.
http://www.analog.com/
http://en.wikipedia.org/wiki/Blackfin
config BR2_csky
bool "csky"
select BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
@@ -400,14 +390,14 @@ config BR2_BINFMT_FLAT_SEP_DATA
# big functions cannot be built in this mode. They cause build
# failures such as "Tried to convert PC relative branch to
# absolute jump" or "error: value -yyyyy out of range".
depends on BR2_bfin
depends on BR2_BROKEN
help
Allow for the data and text segments to be separated and
placed in different regions of memory.
config BR2_BINFMT_FLAT_SHARED
bool "Shared binary"
depends on BR2_m68k || BR2_bfin
depends on BR2_m68k
# Even though this really generates shared binaries, there is no libdl
# and dlopen() cannot be used. So packages that require shared
# libraries cannot be built. Therefore, we don't select
@@ -427,10 +417,6 @@ if BR2_arm || BR2_armeb || BR2_aarch64 || BR2_aarch64_be
source "arch/Config.in.arm"
endif
if BR2_bfin
source "arch/Config.in.bfin"
endif
if BR2_csky
source "arch/Config.in.csky"
endif