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| author | Anup Patel <anup.patel@wdc.com> | 2020-01-03 06:48:42 +0300 |
|---|---|---|
| committer | Anup Patel <anup.patel@wdc.com> | 2020-01-07 09:40:55 +0300 |
| commit | 6469ed101cb3c036cce1ead0d64160a7315f72af (patch) | |
| tree | 3deec50bffa180639771f83c07d3ca2a7d470e9f | |
| parent | 55e191e3b09c4979212c592a4e86e0f561ce1f97 (diff) | |
| download | opensbi-6469ed101cb3c036cce1ead0d64160a7315f72af.tar.xz | |
lib: Add timer exit API
We add sbi_timer_exit() API for OpenSBI exit path handling in
sbi_exit() implementation.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
| -rw-r--r-- | include/sbi/sbi_platform.h | 13 | ||||
| -rw-r--r-- | include/sbi/sbi_timer.h | 4 | ||||
| -rw-r--r-- | lib/sbi/sbi_init.c | 2 | ||||
| -rw-r--r-- | lib/sbi/sbi_timer.c | 15 |
4 files changed, 27 insertions, 7 deletions
diff --git a/include/sbi/sbi_platform.h b/include/sbi/sbi_platform.h index 72bb7e2..02007af 100644 --- a/include/sbi/sbi_platform.h +++ b/include/sbi/sbi_platform.h @@ -125,6 +125,8 @@ struct sbi_platform_operations { void (*timer_event_stop)(void); /** Initialize platform timer for current HART */ int (*timer_init)(bool cold_boot); + /** Exit platform timer for current HART */ + void (*timer_exit)(void); /** Reboot the platform */ int (*system_reboot)(u32 type); @@ -553,6 +555,17 @@ static inline int sbi_platform_timer_init(const struct sbi_platform *plat, } /** + * Exit the platform timer for current HART + * + * @param plat pointer to struct sbi_platform + */ +static inline void sbi_platform_timer_exit(const struct sbi_platform *plat) +{ + if (plat && sbi_platform_ops(plat)->timer_exit) + sbi_platform_ops(plat)->timer_exit(); +} + +/** * Reboot the platform * * @param plat pointer to struct sbi_platform diff --git a/include/sbi/sbi_timer.h b/include/sbi/sbi_timer.h index c14c8d0..401be68 100644 --- a/include/sbi/sbi_timer.h +++ b/include/sbi/sbi_timer.h @@ -24,12 +24,12 @@ void sbi_timer_set_delta(struct sbi_scratch *scratch, ulong delta); void sbi_timer_set_delta_upper(struct sbi_scratch *scratch, ulong delta_upper); -void sbi_timer_event_stop(struct sbi_scratch *scratch); - void sbi_timer_event_start(struct sbi_scratch *scratch, u64 next_event); void sbi_timer_process(struct sbi_scratch *scratch); int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot); +void sbi_timer_exit(struct sbi_scratch *scratch); + #endif diff --git a/lib/sbi/sbi_init.c b/lib/sbi/sbi_init.c index d5d3513..2247324 100644 --- a/lib/sbi/sbi_init.c +++ b/lib/sbi/sbi_init.c @@ -205,6 +205,8 @@ void __noreturn sbi_exit(struct sbi_scratch *scratch) sbi_platform_early_exit(plat); + sbi_timer_exit(scratch); + sbi_platform_final_exit(plat); sbi_hart_hang(); diff --git a/lib/sbi/sbi_timer.c b/lib/sbi/sbi_timer.c index 1ba386f..60ddfaa 100644 --- a/lib/sbi/sbi_timer.c +++ b/lib/sbi/sbi_timer.c @@ -76,11 +76,6 @@ void sbi_timer_set_delta_upper(struct sbi_scratch *scratch, ulong delta_upper) *time_delta |= ((u64)delta_upper << 32); } -void sbi_timer_event_stop(struct sbi_scratch *scratch) -{ - sbi_platform_timer_event_stop(sbi_platform_ptr(scratch)); -} - void sbi_timer_event_start(struct sbi_scratch *scratch, u64 next_event) { sbi_platform_timer_event_start(sbi_platform_ptr(scratch), next_event); @@ -113,3 +108,13 @@ int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot) return sbi_platform_timer_init(sbi_platform_ptr(scratch), cold_boot); } + +void sbi_timer_exit(struct sbi_scratch *scratch) +{ + sbi_platform_timer_event_stop(sbi_platform_ptr(scratch)); + + csr_clear(CSR_MIP, MIP_STIP); + csr_clear(CSR_MIE, MIP_MTIP); + + sbi_platform_timer_exit(sbi_platform_ptr(scratch)); +} |