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Subject[PATCH v12 04/17] riscv: Add vector feature to compile
Date
From: Guo Ren <guoren@linux.alibaba.com>

This patch adds a new config option which could enable assembler's
vector feature.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Co-developed-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
---
arch/riscv/Kconfig | 15 +++++++++++++--
arch/riscv/Makefile | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index ed66c31e4655..e294d85bfb7d 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -432,7 +432,17 @@ config FPU

If you don't know what to do here, say Y.

-endmenu # "Platform type"
+config VECTOR
+ bool "VECTOR support"
+ depends on GCC_VERSION >= 120000 || CLANG_VERSION >= 130000
+ default n
+ help
+ Say N here if you want to disable all vector related procedure
+ in the kernel.
+
+ If you don't know what to do here, say Y.
+
+endmenu

menu "Kernel features"

@@ -556,6 +566,7 @@ config CMDLINE_EXTEND
cases where the provided arguments are insufficient and
you don't want to or cannot modify them.

+
config CMDLINE_FORCE
bool "Always use the default kernel command string"
help
@@ -648,7 +659,7 @@ config XIP_PHYS_ADDR
be linked for and stored to. This address is dependent on your
own flash usage.

-endmenu # "Boot options"
+endmenu

config BUILTIN_DTB
bool
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 3fa8ef336822..1ec17f3d6d09 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -50,6 +50,7 @@ riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
+riscv-march-$(CONFIG_VECTOR) := $(riscv-march-y)v

# Newer binutils versions default to ISA spec version 20191213 which moves some
# instructions from the I extension to the Zicsr and Zifencei extensions.
--
2.25.1
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