diff options
Diffstat (limited to 'arch/riscv64/kernel/sbi.h')
| -rw-r--r-- | arch/riscv64/kernel/sbi.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/riscv64/kernel/sbi.h b/arch/riscv64/kernel/sbi.h index 8abff25..fe75c85 100644 --- a/arch/riscv64/kernel/sbi.h +++ b/arch/riscv64/kernel/sbi.h @@ -133,6 +133,14 @@ static inline struct sbiret sbi_send_ipi(unsigned long hart_mask, /** Hart start function ID. */ #define FID_HSM_START 0 +/** + * Start hart. + * + * @param hartid Hart to start. + * @param start_addr Address to jump to in S mode. + * @param opaque OS-specific argument passed to hart. + * @return SBI call return. \see sbiret. + */ static inline struct sbiret sbi_hart_start(unsigned long hartid, unsigned long start_addr, unsigned long opaque) @@ -141,4 +149,25 @@ static inline struct sbiret sbi_hart_start(unsigned long hartid, 0, 0, 0); } +/** Hart status function ID. */ +#define FID_HSM_STATUS 2 + +/** + * Get hart status. + * + * @param hartid Hart ID. + * @return SBI call return. \see sbiret. + */ +static inline struct sbiret sbi_hart_status(unsigned long hartid) +{ + return sbi_ecall(EID_HSM, FID_HSM_STATUS, hartid, + 0, 0, 0, 0, 0); +} + +/** + * Status code \ref sbi_hart_status() returns for a started hart. + * The only one we're currently interested in. + */ +#define SBI_HART_STARTED 0 + #endif /* KMI_RISCV_SBI_H */ |