[Buildroot] [PATCH v4 13/15] arch/arm: add two new cortex-based armv8.2a cores
Giulio Benetti
giulio.benetti at micronovasrl.com
Thu Jun 20 10:07:23 UTC 2019
From: "Yann E. MORIN" <yann.morin.1998 at free.fr>
The cortex-a76 implements the full amrv8.2a extensions, and some
optional extensions from the armv8.3a, armv8.4a, and armv8.5a sets,
but none of their mandatory extensions, which means that it does not
qualify for better than an armv8.2a:
https://developer.arm.com/products/processors/cortex-a/cortex-a76
http://infocenter.arm.com/help/topic/com.arm.doc.100798_0301_00_en/giq1479805174793.html
http://infocenter.arm.com/help/topic/com.arm.doc.100798_0301_00_en/fjv1477559794375.html
Also, gcc fits it in the armv8.2a category, too:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/aarch64/aarch64-cores.def;h=67ce42fb8aacd4c246295f32151a03b1f318ae44;hb=HEAD#l97
Build tested:
https://gitlab.com/kubu93/buildroot/pipelines/60318953
Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Signed-off-by: Romain Naour <romain.naour at gmail.com>
Signed-off-by: Giulio Benetti <giulio.benetti at micronovasrl.com>
---
arch/Config.in.arm | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/Config.in.arm b/arch/Config.in.arm
index 4685b72510..a664cfe0e2 100644
--- a/arch/Config.in.arm
+++ b/arch/Config.in.arm
@@ -494,6 +494,24 @@ config BR2_cortex_a75_a55
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_8
+config BR2_cortex_a76
+ bool "cortex-A76"
+ select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_FP_ARMV8
+ select BR2_ARM_CPU_ARMV8A
+ select BR2_ARCH_HAS_MMU_OPTIONAL
+ select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
+config BR2_cortex_a76_a55
+ bool "cortex-A76/A55 big.LITTLE"
+ select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
+ select BR2_ARM_CPU_HAS_FP_ARMV8
+ select BR2_ARM_CPU_ARMV8A
+ select BR2_ARCH_HAS_MMU_OPTIONAL
+ select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
comment "armv8.4a cores"
config BR2_saphira
@@ -857,6 +875,8 @@ config BR2_GCC_TARGET_CPU
default "cortex-a55" if BR2_cortex_a55
default "cortex-a75" if BR2_cortex_a75
default "cortex-a75.cortex-a55" if BR2_cortex_a75_a55
+ default "cortex-a76" if BR2_cortex_a76
+ default "cortex-a76.cortex-a55" if BR2_cortex_a76_a55
# armv8.4a
default "saphira" if BR2_saphira
--
2.17.1
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