diff options
| author | Yu Chien Peter Lin <peterlin@andestech.com> | 2023-01-20 06:05:08 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-01-22 15:02:09 +0300 |
| commit | 8ecbe6d3fba6a655b5b5d8e39381187826ac750f (patch) | |
| tree | 87ca9efbec3276ee7ea1fe930e4e5b8445d5f72e /include | |
| parent | ce2a834c989043895d339df4d61221eca2b428e9 (diff) | |
| download | opensbi-8ecbe6d3fba6a655b5b5d8e39381187826ac750f.tar.xz | |
lib: sbi_hsm: handle failure when hart_stop returns SBI_ENOTSUPP
Make use of generic warm-boot path when platform hart_stop callback
returns SBI_ENOTSUPP, in case certain hart can not turn off its
power domain, or it detects some error occured in power management
unit, it can fall through warm-boot flow and wait for interrupt in
sbi_hsm_hart_wait().
Also improves comment in sbi_hsm_hart_wait().
Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sbi/sbi_hsm.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/sbi/sbi_hsm.h b/include/sbi/sbi_hsm.h index c2a728a..1170127 100644 --- a/include/sbi/sbi_hsm.h +++ b/include/sbi/sbi_hsm.h @@ -21,8 +21,12 @@ struct sbi_hsm_device { int (*hart_start)(u32 hartid, ulong saddr); /** - * Stop (or power-down) the current hart from running. This call - * doesn't expect to return if success. + * Stop (or power-down) the current hart from running. + * + * Return SBI_ENOTSUPP if the hart does not support platform-specific + * stop actions. + * + * For successful stop, the call won't return. */ int (*hart_stop)(void); |