diff options
| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2021-10-25 15:09:34 +0200 |
|---|---|---|
| committer | Leo Yu-Chi Liang <ycliang@andestech.com> | 2021-11-08 15:35:55 +0800 |
| commit | afb8e1f06730a35d436c58367f2b15c7dbf90cf1 (patch) | |
| tree | 735d73398e406570f6683e4255bedc39b1fc8e97 /arch/riscv/lib | |
| parent | 52207514ba419a69a8105d16997b025f966c8879 (diff) | |
riscv: function to retrieve SBI implementation version
Provide function sbi_get_impl_version() to retrieve the SBI implementation
version.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Diffstat (limited to 'arch/riscv/lib')
| -rw-r--r-- | arch/riscv/lib/sbi.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c index 2b53896b8a3..d427d1b29ea 100644 --- a/arch/riscv/lib/sbi.c +++ b/arch/riscv/lib/sbi.c @@ -90,6 +90,25 @@ int sbi_get_impl_id(void) } /** + * sbi_get_impl_version() - get SBI implementation version + * + * @version: pointer to receive version + * Return: 0 on success, -ENOTSUPP otherwise + */ +int sbi_get_impl_version(long *version) +{ + struct sbiret ret; + + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_IMP_VERSION, + 0, 0, 0, 0, 0, 0); + if (ret.error) + return -ENOTSUPP; + if (version) + *version = ret.value; + return 0; +} + +/** * sbi_probe_extension() - Check if an SBI extension ID is supported or not. * @extid: The extension ID to be probed. * |