linux-next/arch/riscv/Kconfig.vendor

menu "Vendor extensions"

config RISCV_ISA_VENDOR_EXT
	bool

menu "Andes"
config RISCV_ISA_VENDOR_EXT_ANDES
	bool "Andes vendor extension support"
	select RISCV_ISA_VENDOR_EXT
	default y
	help
	  Say N here if you want to disable all Andes vendor extension
	  support. This will cause any Andes vendor extensions that are
	  requested by hardware probing to be ignored.

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

endmenu
riscv: Extend cpufeature.c to detect vendor extensions Instead of grouping all vendor extensions into the same riscv_isa_ext that standard instructions use, create a struct "riscv_isa_vendor_ext_data_list" that allows each vendor to maintain their vendor extensions independently of the standard extensions. xandespmu is currently the only vendor extension so that is the only extension that is affected by this change. An additional benefit of this is that the extensions of each vendor can be conditionally enabled. A config RISCV_ISA_VENDOR_EXT_ANDES has been added to allow for that. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Andy Chiu <andy.chiu@sifive.com> Tested-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com> Link: https://lore.kernel.org/r/20240719-support_vendor_extensions-v3-1-0af7587bbec0@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> 2024-07-19 09:15:18 -07:00			`menu "Vendor extensions"`

			`config RISCV_ISA_VENDOR_EXT`
			`bool`

			`menu "Andes"`
			`config RISCV_ISA_VENDOR_EXT_ANDES`
			`bool "Andes vendor extension support"`
			`select RISCV_ISA_VENDOR_EXT`
			`default y`
			`help`
			`Say N here if you want to disable all Andes vendor extension`
			`support. This will cause any Andes vendor extensions that are`
			`requested by hardware probing to be ignored.`

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

			`endmenu`