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lib: sbi: Extend sbi_hsm_hart_start() for domains

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The sbi_hsm_hart_start() should consider the domain under which we
are trying to start the HART. This will help ensure that HART A can
start HART B only if both HARTs A and B belong to the same domain.

We also have a special case when we bring-up boot HART of non-root
domains in sbi_domain_finalize() where we should skip domain checks
in sbi_hsm_hart_start(). To achieve this, sbi_hsm_hart_start() should
do domain checks only when domain parameter is non-NULL.

This patch extends sbi_hsm_hart_start() as-per above.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-09-19 14:26:52 +05:30
committed by Anup Patel
parent e73b92d862
commit 3a30d2c34d
4 changed files with 19 additions and 15 deletions
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5
include/sbi/sbi_hsm.h
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@@ -25,8 +25,9 @@ struct sbi_scratch;
int sbi_hsm_init(struct sbi_scratch *scratch, u32 hartid, bool cold_boot);
void __noreturn sbi_hsm_exit(struct sbi_scratch *scratch);
int sbi_hsm_hart_start(struct sbi_scratch *scratch, u32 hartid,
ulong saddr, ulong smode, ulong priv);
int sbi_hsm_hart_start(struct sbi_scratch *scratch,
const struct sbi_domain *dom,
u32 hartid, ulong saddr, ulong smode, ulong priv);
int sbi_hsm_hart_stop(struct sbi_scratch *scratch, bool exitnow);
int sbi_hsm_hart_get_state(const struct sbi_domain *dom, u32 hartid);
int sbi_hsm_hart_state_to_status(int state);