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lib: sbi: Domains can be registered only before finalizing domains

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The domains are boot-time system-level partitions so we should
allow platform support to register domains only before hart
domain assignments are finalized.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Anup Patel
2021-04-09 09:20:08 +05:30
committed by Anup Patel
parent 27a16b1545
commit b1df1acd20
1 changed files with 9 additions and 2 deletions
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11
lib/sbi/sbi_domain.c
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@@ -19,8 +19,8 @@
struct sbi_domain *hartid_to_domain_table[SBI_HARTMASK_MAX_BITS] = { 0 };
struct sbi_domain *domidx_to_domain_table[SBI_DOMAIN_MAX_INDEX] = { 0 };
static u32 domain_count = 0;
static bool domain_finalized = false;
static struct sbi_hartmask root_hmask = { 0 };
@@ -376,7 +376,8 @@ int sbi_domain_register(struct sbi_domain *dom,
u32 cold_hartid = current_hartid();
const struct sbi_platform *plat = sbi_platform_thishart_ptr();
if (!dom || !assign_mask)
/* Sanity checks */
if (!dom || !assign_mask || domain_finalized)
return SBI_EINVAL;
/* Check if domain already discovered */
@@ -490,6 +491,12 @@ int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid)
}
}
/*
* Set the finalized flag so that the root domain
* regions can't be changed.
*/
domain_finalized = true;
return 0;
}