diff options
| author | Anup Patel <anup.patel@wdc.com> | 2021-04-22 14:14:02 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-04-28 17:31:07 +0530 |
| commit | a84a1ddbbabb2389b5af91473250d0aff90e40d7 (patch) | |
| tree | 23d28621efd4573e17ded43bbb474600084e5b32 /include/sbi/sbi_hsm.h | |
| parent | 043d088e3964ec64b091f739e2282f53f7d264fb (diff) | |
lib: sbi: Simplify HSM platform operations
Instead of having hsm_start(), hsm_stop() and hsm_suspend()
callbacks in platform operations, it will be much simpler for
HSM driver to directly register these operations as a device
to the sbi_hsm implementation.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'include/sbi/sbi_hsm.h')
| -rw-r--r-- | include/sbi/sbi_hsm.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/sbi/sbi_hsm.h b/include/sbi/sbi_hsm.h index bf0c1a5..c16e871 100644 --- a/include/sbi/sbi_hsm.h +++ b/include/sbi/sbi_hsm.h @@ -12,9 +12,40 @@ #include <sbi/sbi_types.h> +/** Hart state managment device */ +struct sbi_hsm_device { + /** Name of the hart state managment device */ + char name[32]; + + /** Start (or power-up) the given hart */ + 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. + */ + int (*hart_stop)(void); + + /** + * Put the current hart in platform specific suspend (or low-power) + * state. + * + * For successful retentive suspend, the call will return 0 when + * the hart resumes normal execution. + * + * For successful non-retentive suspend, the hart will resume from + * specified resume address + */ + int (*hart_suspend)(u32 suspend_type, ulong raddr); +}; + struct sbi_domain; struct sbi_scratch; +const struct sbi_hsm_device *sbi_hsm_get_device(void); + +void sbi_hsm_set_device(const struct sbi_hsm_device *dev); + int sbi_hsm_init(struct sbi_scratch *scratch, u32 hartid, bool cold_boot); void __noreturn sbi_hsm_exit(struct sbi_scratch *scratch); |