Commit db5a7946 authored by Atish Patra's avatar Atish Patra Committed by Palmer Dabbelt

RISC-V: Add SBI HSM extension definitions

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: default avatarAtish Patra <atish.patra@wdc.com>
Reviewed-by: default avatarAnup Patel <anup.patel@wdc.com>
Signed-off-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
parent f90b43ce
...@@ -26,6 +26,7 @@ enum sbi_ext_id { ...@@ -26,6 +26,7 @@ enum sbi_ext_id {
SBI_EXT_TIME = 0x54494D45, SBI_EXT_TIME = 0x54494D45,
SBI_EXT_IPI = 0x735049, SBI_EXT_IPI = 0x735049,
SBI_EXT_RFENCE = 0x52464E43, SBI_EXT_RFENCE = 0x52464E43,
SBI_EXT_HSM = 0x48534D,
}; };
enum sbi_ext_base_fid { enum sbi_ext_base_fid {
...@@ -56,6 +57,19 @@ enum sbi_ext_rfence_fid { ...@@ -56,6 +57,19 @@ enum sbi_ext_rfence_fid {
SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID, 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_DEFAULT 0x1
#define SBI_SPEC_VERSION_MAJOR_SHIFT 24 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24
#define SBI_SPEC_VERSION_MAJOR_MASK 0x7f #define SBI_SPEC_VERSION_MAJOR_MASK 0x7f
......
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