From b20ed9febe0b78228055ce69d8e3fbb13f64f1cc Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Sun, 12 Jun 2022 20:03:47 -0500 Subject: lib: sbi_hsm: Call a device hook during hart resume Non-retentive suspend states may require platform-specific actions during resume. For example, firmware may need to save and restore the values of custom CSRs. Add a hook to support this. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland --- include/sbi/sbi_hsm.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/sbi/sbi_hsm.h b/include/sbi/sbi_hsm.h index c16e871..6da8cee 100644 --- a/include/sbi/sbi_hsm.h +++ b/include/sbi/sbi_hsm.h @@ -37,6 +37,14 @@ struct sbi_hsm_device { * specified resume address */ int (*hart_suspend)(u32 suspend_type, ulong raddr); + + /** + * Perform platform-specific actions to resume from a suspended state. + * + * This includes restoring any platform state that was lost during + * non-retentive suspend. + */ + void (*hart_resume)(void); }; struct sbi_domain; -- cgit v1.2.3