From 183787c6fcc2c793ec96e946a4fdd8cd0e6d7aa0 Mon Sep 17 00:00:00 2001 From: Vincent Chen Date: Mon, 22 Mar 2021 22:26:02 +0800 Subject: [PATCH] riscv: Add 3 SBI wrapper functions to get cpu manufacturer information Add 3 wrapper functions to get vendor id, architecture id and implement id from M-mode Signed-off-by: Vincent Chen Reviewed-by: Anup Patel Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/sbi.h | 3 +++ arch/riscv/kernel/sbi.c | 15 +++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 99895d9..dd23299 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -97,6 +97,9 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, void sbi_console_putchar(int ch); int sbi_console_getchar(void); +long sbi_get_mvendorid(void); +long sbi_get_marchid(void); +long sbi_get_mimpid(void); void sbi_set_timer(uint64_t stime_value); void sbi_shutdown(void); void sbi_clear_ipi(void); diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c index c0dcebd..fa0dd88 100644 --- a/arch/riscv/kernel/sbi.c +++ b/arch/riscv/kernel/sbi.c @@ -547,6 +547,21 @@ static inline long sbi_get_firmware_version(void) return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION); } +long sbi_get_mvendorid(void) +{ + return __sbi_base_ecall(SBI_EXT_BASE_GET_MVENDORID); +} + +long sbi_get_marchid(void) +{ + return __sbi_base_ecall(SBI_EXT_BASE_GET_MARCHID); +} + +long sbi_get_mimpid(void) +{ + return __sbi_base_ecall(SBI_EXT_BASE_GET_MIMPID); +} + static void sbi_send_cpumask_ipi(const struct cpumask *target) { struct cpumask hartid_mask; -- 2.7.4