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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2022-03-17 07:36:14 +0100 |
|---|---|---|
| committer | Leo Yu-Chi Liang <ycliang@andestech.com> | 2022-04-06 09:40:05 +0800 |
| commit | ca7e93fa9f6c417a2d260440ff4c0aaded259989 (patch) | |
| tree | d7af3313526b4c240f4df2c8f8d214d54ba4466d /arch/riscv/lib | |
| parent | 70ae54bd2579568372e79f69417e5cb568b24b6f (diff) | |
| download | u-boot-ca7e93fa9f6c417a2d260440ff4c0aaded259989.zip u-boot-ca7e93fa9f6c417a2d260440ff4c0aaded259989.tar.gz u-boot-ca7e93fa9f6c417a2d260440ff4c0aaded259989.tar.bz2 | |
riscv: provide missing base extension functions
Provide library functions to read:
* machine vendor ID
* machine architecture ID
* machine implementation ID
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Diffstat (limited to 'arch/riscv/lib')
| -rw-r--r-- | arch/riscv/lib/sbi.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c index d427d1b..8724e3a 100644 --- a/arch/riscv/lib/sbi.c +++ b/arch/riscv/lib/sbi.c @@ -128,6 +128,71 @@ int sbi_probe_extension(int extid) } /** + * sbi_get_mvendorid() - get machine vendor ID + * + * @mimpid: on return machine vendor ID + * Return: 0 on success + */ +int sbi_get_mvendorid(long *mvendorid) +{ + struct sbiret ret; + + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MVENDORID, + 0, 0, 0, 0, 0, 0); + if (ret.error) + return -ENOTSUPP; + + if (mvendorid) + *mvendorid = ret.value; + + return 0; +} + +/** + * sbi_get_marchid() - get machine architecture ID + * + * @mimpid: on return machine architecture ID + * Return: 0 on success + */ +int sbi_get_marchid(long *marchid) +{ + struct sbiret ret; + + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MARCHID, + 0, 0, 0, 0, 0, 0); + + if (ret.error) + return -ENOTSUPP; + + if (marchid) + *marchid = ret.value; + + return 0; +} + +/** + * sbi_get_mimpid() - get machine implementation ID + * + * @mimpid: on return machine implementation ID + * Return: 0 on success + */ +int sbi_get_mimpid(long *mimpid) +{ + struct sbiret ret; + + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_MIMPID, + 0, 0, 0, 0, 0, 0); + + if (ret.error) + return -ENOTSUPP; + + if (mimpid) + *mimpid = ret.value; + + return 0; +} + +/** * sbi_srst_reset() - invoke system reset extension * * @type: type of reset |