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arch/csky: restrict ck610 to the C-SKY gcc port

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As Guo explained, upstream gcc does not support abi-v1 (only abi-v2), but
ck610 needs abi-v1 [0] [1]

To simplify things, we make the whole C-SKY architecture require gcc-9
or later, and add a single exception in gcc to force the ck610 to use
the C-SKY port.

Note that this does not change the default gcc version to be used for
C-SKY: the C-SKY port is still always the default one; the gcc-9 version
is only proposed as an alternative (except for ck610, of course).

[0] http://lists.busybox.net/pipermail/buildroot/2019-July/254386.html
[1] package/Makefile.in#73

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Guo Ren <guoren@kernel.org>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Romain Naour <romain.naour@gmail.com>
Acked-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Yann E. MORIN 2019-07-18 23:06:27 +02:00 committed by Peter Korsgaard
parent a0b0976c93
commit b8aad93817
3 changed files with 8 additions and 0 deletions
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3
arch/Config.in
View File

@ -78,6 +78,9 @@ config BR2_aarch64_be
config BR2_csky config BR2_csky
bool "csky" bool "csky"
select BR2_ARCH_HAS_MMU_MANDATORY select BR2_ARCH_HAS_MMU_MANDATORY
# Most variants are supported by gcc-9+, except one that is
# handled as a special exception in package/gcc/Config.in.host
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
help help
csky is processor IP from china. csky is processor IP from china.
http://www.c-sky.com/ http://www.c-sky.com/

2
arch/Config.in.csky
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@ -5,6 +5,8 @@ choice
Specific CPU variant to use Specific CPU variant to use
config BR2_ck610 config BR2_ck610
# Not supported by upstream gcc <= 9, and handled as a special
# exception in package/gcc/Config.in.host
bool "ck610" bool "ck610"
config BR2_ck807 config BR2_ck807

3
package/gcc/Config.in.host
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@ -89,6 +89,9 @@ config BR2_GCC_VERSION_9_X
# powerpc spe support has been deprecated since gcc 8.x. # powerpc spe support has been deprecated since gcc 8.x.
# https://gcc.gnu.org/ml/gcc/2018-04/msg00102.html # https://gcc.gnu.org/ml/gcc/2018-04/msg00102.html
depends on !BR2_powerpc_SPE depends on !BR2_powerpc_SPE
# C-SKY sk610 needs abiv1, which is not supported in
# upstream gcc
depends on !BR2_ck610
select BR2_TOOLCHAIN_GCC_AT_LEAST_9 select BR2_TOOLCHAIN_GCC_AT_LEAST_9
endchoice endchoice