RISC-V: Add SBI HSM extension definitions (db5a7946) · Commits · 戴 / test

SBI specification defines HSM extension that allows to start/stop a hart by a supervisor anytime. The specification is available at https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.adoc Add those definitions here. Signed-off-by:

arch/riscv/include/asm/sbi.h

+14 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,7 @@ enum sbi_ext_id {
		SBI_EXT_TIME = 0x54494D45,
		SBI_EXT_IPI = 0x735049,
		SBI_EXT_RFENCE = 0x52464E43,
		SBI_EXT_HSM = 0x48534D,
		};

		enum sbi_ext_base_fid {
		@@ -56,6 +57,19 @@ enum sbi_ext_rfence_fid {
		SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID,
		};

		enum sbi_ext_hsm_fid {
		SBI_EXT_HSM_HART_START = 0,
		SBI_EXT_HSM_HART_STOP,
		SBI_EXT_HSM_HART_STATUS,
		};

		enum sbi_hsm_hart_status {
		SBI_HSM_HART_STATUS_STARTED = 0,
		SBI_HSM_HART_STATUS_STOPPED,
		SBI_HSM_HART_STATUS_START_PENDING,
		SBI_HSM_HART_STATUS_STOP_PENDING,
		};

		#define SBI_SPEC_VERSION_DEFAULT 0x1
		#define SBI_SPEC_VERSION_MAJOR_SHIFT 24
		#define SBI_SPEC_VERSION_MAJOR_MASK 0x7f