[Buildroot] [PATCH] arch/Config.in: armeb no-MMU is not supported
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Wed Jun 8 09:48:02 UTC 2022
elf2flt does not support ARM big-endian, so supporting Cortex M3/M4/M7
with armeb is not possibly.
Therefore this commit makes:
- MMU mandatory on armeb
- Prevents from seeing Cortex M3/M4/M7 on armeb
Fixes:
http://autobuild.buildroot.net/results/9bca0cbfb6a66c455e74ad194526bca942665978/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
arch/Config.in | 2 +-
arch/Config.in.arm | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/Config.in b/arch/Config.in
index 49e16fce38..da499b37ab 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -49,7 +49,7 @@ config BR2_arm
config BR2_armeb
bool "ARM (big endian)"
- # MMU support is set by the subarchitecture file, arch/Config.in.arm
+ select BR2_ARCH_HAS_MMU_MANDATORY
help
ARM is a 32-bit reduced instruction set computer (RISC)
instruction set architecture (ISA) developed by ARM Holdings.
diff --git a/arch/Config.in.arm b/arch/Config.in.arm
index fa2e882550..eb71d70430 100644
--- a/arch/Config.in.arm
+++ b/arch/Config.in.arm
@@ -242,6 +242,8 @@ config BR2_pj4
select BR2_ARM_CPU_HAS_VFPV3
select BR2_ARM_CPU_ARMV7A
+# Cortex-M cores are only supported for little endian configurations
+if BR2_arm
comment "armv7m cores"
config BR2_cortex_m3
bool "cortex-M3"
@@ -258,6 +260,7 @@ config BR2_cortex_m7
select BR2_ARM_CPU_MAYBE_HAS_FPV5
select BR2_ARM_CPU_ARMV7M
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
+endif # BR2_arm
endif # !BR2_ARCH_IS_64
comment "armv8 cores"
--
2.35.3
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