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arc: add explicit selection of CPU templates ARC 750D and ARC770D

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This separation allows to specify unique options and features for each
CPU.

For example ARC 770D has LLOCK/SCOND instructions built-in by default.
Also this new scheme simplifies selection of proper configuration for
users - preconfigured options now match templates for ARC CPUs.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Anton Kolesov <akolesov@synopsys.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Alexey Brodkin 2014-10-30 16:57:27 +03:00 committed by Peter Korsgaard
parent 5837f364e7
commit 11f078c22f
1 changed files with 19 additions and 2 deletions
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21
arch/Config.in.arc
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@ -1,6 +1,22 @@
# Choise of atomic instructions presence
choice
prompt "Target CPU"
depends on BR2_arc
default BR2_arc770d
help
Specific CPU to use
config BR2_arc750d
bool "ARC 750D"
config BR2_arc770d
bool "ARC 770D"
endchoice
# Choice of atomic instructions presence
config BR2_ARC_ATOMIC_EXT
bool "Atomic extension (LLOCK/SCOND instructions)"
default y if BR2_arc770d
config BR2_ARCH_HAS_ATOMICS
default y if BR2_ARC_ATOMIC_EXT
@ -18,4 +34,5 @@ config BR2_ENDIAN
default "BIG" if BR2_arceb
config BR2_GCC_TARGET_CPU
default "arc700"
default "arc700" if BR2_arc750d
default "arc700" if BR2_arc770d