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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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4
lib/sbi/sbi_ecall_hsm.c
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@@ -28,8 +28,8 @@ static int sbi_ecall_hsm_handler(unsigned long extid, unsigned long funcid,
case SBI_EXT_HSM_HART_START:
smode = csr_read(CSR_MSTATUS);
smode = (smode & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT;
ret = sbi_hsm_hart_start(scratch, args[0], args[1],
smode, args[2]);
ret = sbi_hsm_hart_start(scratch, sbi_domain_thishart_ptr(),
args[0], args[1], smode, args[2]);
break;
case SBI_EXT_HSM_HART_STOP:
ret = sbi_hsm_hart_stop(scratch, TRUE);