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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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6
lib/sbi/sbi_domain.c
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@@ -324,8 +324,10 @@ int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid)
scratch->next_mode = dom->next_mode;
scratch->next_arg1 = dom->next_arg1;
} else {
rc = sbi_hsm_hart_start(scratch, dhart, dom->next_addr,
dom->next_mode, dom->next_arg1);
rc = sbi_hsm_hart_start(scratch, NULL, dhart,
dom->next_addr,
dom->next_mode,
dom->next_arg1);
if (rc)
return rc;
}