diff mbox series

[RESEND,3/7] arch: Introduce LoongArch64

Message ID 20240524-loongarch64-v1-3-d24078d79cd5@flygoat.com
State New
Headers show
Series LoongArch64 initial support | expand

Commit Message

Jiaxun Yang May 24, 2024, 7:36 p.m. UTC 
Introduce LoongArch64 at architecture level.

Config.in.loongarch is prepared for possible loongarch32
enablement in future.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/Config.in           |  13 +++++
 arch/Config.in.loongarch | 127 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+)
diff mbox series

Patch

diff --git a/arch/Config.in b/arch/Config.in
index cc902446bfd9..504808fcbce4 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -77,6 +77,15 @@  config BR2_i386
 	  Intel i386 architecture compatible microprocessor
 	  http://en.wikipedia.org/wiki/I386
 
+config BR2_loongarch64
+	bool "LoongArch64"
+	select BR2_USE_MMU
+	select BR2_ARCH_IS_64
+	help
+	  LoongArch64 is a  is a 64-bit architecture developed by Loongson.
+	  http://www.loongson.cn/
+	  https://en.wikipedia.org/wiki/Loongson
+
 config BR2_m68k
 	bool "m68k"
 	# MMU support is set by the subarchitecture file, arch/Config.in.m68k
@@ -380,6 +389,10 @@  if BR2_arm || BR2_armeb || BR2_aarch64 || BR2_aarch64_be
 source "arch/Config.in.arm"
 endif
 
+if BR2_loongarch64
+source "arch/Config.in.loongarch"
+endif
+
 if BR2_m68k
 source "arch/Config.in.m68k"
 endif
diff --git a/arch/Config.in.loongarch b/arch/Config.in.loongarch
new file mode 100644
index 000000000000..f5d767a9d87d
--- /dev/null
+++ b/arch/Config.in.loongarch
@@ -0,0 +1,127 @@ 
+# LoongArch CPU
+
+choice
+	prompt "Target Architecture Variant"
+	default BR2_loongarch64_generic
+
+config BR2_loongarch64_generic
+	bool "Generic LoongArch 64-bit"
+	depends on BR2_ARCH_IS_64
+	select BR2_ARCH_NEEDS_GCC_AT_LEAST_12
+	help
+	  Generic LoongArch 64-bit processor.
+
+config BR2_loongarch64_v1_0
+	bool "LoongArch64 ISA version 1.0"
+	depends on BR2_ARCH_IS_64
+	select BR2_ARCH_NEEDS_GCC_AT_LEAST_13
+	help
+	  LoongArch64 ISA version 1.0 processor.
+
+config BR2_loongarch64_v1_1
+	bool "LoongArch64 ISA version 1.1"
+	depends on BR2_ARCH_IS_64
+	select BR2_ARCH_NEEDS_GCC_AT_LEAST_13
+	help
+	  LoongArch64 ISA version 1.1 processor.
+endchoice
+
+choice
+	prompt "FPU Type"
+	default BR2_LOONGARCH_FPU_64
+
+config BR2_LOONGARCH_FPU_64
+	bool "64"
+	help
+	  Allow the use of hardware floating-point instructions for 32-bit
+	  and 64-bit operations.
+
+config BR2_LOONGARCH_FPU_32
+	bool "32"
+	help
+	  Allow the use of hardware floating-point instructions for 32-bit
+	  operations only.
+
+config BR2_LOONGARCH_FPU_NONE
+	bool "none"
+	help
+	  Prevent the use of hardware floating-point instructions.
+endchoice
+
+choice
+	prompt "SIMD Type"
+	default BR2_LOONGARCH_SIMD_NONE
+
+config BR2_LOONGARCH_SIMD_NONE
+	bool "none"
+	help
+	  Prevent the use of hardware SIMD instructions.
+
+config BR2_LOONGARCH_SIMD_LSX
+	bool "LSX"
+	help
+	  Enable generating instructions from the 128-bit LoongArch SIMD
+	  Extension (LSX).
+
+config BR2_LOONGARCH_SIMD_LASX
+	bool "LASX"
+	help
+	  Enable generating instructions from the 256-bit LoongArch Advanced
+	  SIMD Extension (LASX) and the 128-bit LoongArch SIMD Extension (LSX).
+endchoice
+
+choice
+	prompt "Target ABI"
+	default BR2_LOONGARCH_ABI_LP64D if BR2_ARCH_IS_64 && BR2_LOONGARCH_FPU_64
+	default BR2_LOONGARCH_ABI_LP64F if BR2_ARCH_IS_64 && BR2_LOONGARCH_FPU_32
+	default BR2_LOONGARCH_ABI_LP64S if BR2_ARCH_IS_64 && BR2_LOONGARCH_SIMD_NONE
+
+config BR2_LOONGARCH_ABI_LP64D
+	bool "lp64d"
+	depends on BR2_ARCH_IS_64
+	depends on BR2_LOONGARCH_FPU_64
+
+config BR2_LOONGARCH_ABI_LP64F
+	bool "lp64f"
+	depends on BR2_ARCH_IS_64
+	depends on BR2_LOONGARCH_FPU_64 || BR2_LOONGARCH_FPU_32
+
+config BR2_LOONGARCH_ABI_LP64S
+	bool "lp64d"
+	depends on BR2_ARCH_IS_64
+endchoice
+
+config BR2_ARCH
+	default "loongarch64" if BR2_ARCH_IS_64
+
+config BR2_NORMALIZED_ARCH
+	default "loongarch"
+
+config BR2_ENDIAN
+	default "LITTLE"
+
+config BR2_GCC_TARGET_ARCH
+	default "loongarch64" if BR2_loongarch64_generic
+	default "la64v1.0" if BR2_loongarch64_v1_0
+	default "la64v1.1" if BR2_loongarch64_v1_1
+
+config BR2_GCC_TARGET_FPU
+	default "64" if BR2_LOONGARCH_FPU_64
+	default "32" if BR2_LOONGARCH_FPU_32
+	default "none" if BR2_LOONGARCH_FPU_NONE
+
+config BR2_GCC_TARGET_SIMD
+	default "lasx" if BR2_LOONGARCH_SIMD_LASX
+	default "lsx" if BR2_LOONGARCH_SIMD_LSX
+	default "none" if BR2_LOONGARCH_FPU_NONE
+
+config BR2_GCC_TARGET_ABI
+	default "lp64d" if BR2_LOONGARCH_ABI_LP64D
+	default "lp64f" if BR2_LOONGARCH_ABI_LP64F
+	default "lp64s" if BR2_LOONGARCH_ABI_LP64S
+
+config BR2_READELF_ARCH_NAME
+	default "LoongArch"
+
+# vim: ft=kconfig
+# -*- mode:kconfig; -*-