From 99d626822348e1edd79b7363f010dd549c37c976 Mon Sep 17 00:00:00 2001 From: Julien Olivain Date: Tue, 3 Mar 2026 21:27:04 +0100 Subject: [PATCH] arch/arm: add the Neoverse-V1 core This commit adds the Neoverse-V1 core, which is an armv8.4a ISA. See: [1] [2]. This CPU support was added in GCC 11. See [3] [4] [5]. This CPU supports Aarch64 at all exception levels (EL0 to EL3). It also supports Aarch32 only in EL0 (user-space). This means it's technically possible to compile Aarch32 code. GCC has the support to do so. Since Buildroot recompiles a full system (ATF, Kernel, user-space) this support has limited value. This is why this CPU is limited to 64bit builds only. Qemu added neoverse-v1 support in upstream commit [6], first included in v8.1.0. [1] https://developer.arm.com/Processors/Neoverse%20V1 [2] https://developer.arm.com/documentation/101427/0102/Functional-description/Introduction/About-the-core [3] https://gcc.gnu.org/gcc-11/changes.html#arm-targets [4] https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/aarch64/aarch64-cores.def;hb=releases/gcc-11.1.0#l141 [5] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=c9d56eb777552ac5ee0c281e1f6e34b6fe929b77 [6] https://gitlab.com/qemu-project/qemu/-/commit/c74138c6c040b62e941326a4fbb25a93fdd35b72 Signed-off-by: Julien Olivain --- arch/Config.in.arm | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/Config.in.arm b/arch/Config.in.arm index a0bf6c3386..16911f5b95 100644 --- a/arch/Config.in.arm +++ b/arch/Config.in.arm @@ -498,6 +498,12 @@ config BR2_tsv110 select BR2_ARCH_NEEDS_GCC_AT_LEAST_9 comment "armv8.4a cores" +config BR2_neoverse_v1 + bool "neoverse-V1 (aka zeus)" + depends on BR2_ARCH_IS_64 + select BR2_ARM_CPU_HAS_FP_ARMV8 + select BR2_ARM_CPU_ARMV8A + select BR2_ARCH_NEEDS_GCC_AT_LEAST_11 config BR2_saphira bool "saphira" depends on BR2_ARCH_IS_64 @@ -918,6 +924,7 @@ config BR2_GCC_TARGET_CPU default "neoverse-n1" if BR2_neoverse_n1 default "tsv110" if BR2_tsv110 # armv8.4a + default "neoverse-v1" if BR2_neoverse_v1 default "saphira" if BR2_saphira # armv9.0a default "cortex-a710" if BR2_cortex_a710