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lib: sbi: Allow platform to influence cold boot HART selection

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We add an optional cold_boot_allowed() platform callback which allows
platform support to decide which HARTs can do cold boot initialization.

If this platform callback is not available then any HART can do cold
boot initialization.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Anup Patel
2022-12-29 10:56:15 +08:00
committed by Anup Patel
parent 65638f8d6b
commit f14595a7cf
2 changed files with 25 additions and 2 deletions
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7
lib/sbi/sbi_init.c
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@@ -498,8 +498,11 @@ void __noreturn sbi_init(struct sbi_scratch *scratch)
* HARTs which satisfy above condition.
*/
if (next_mode_supported && atomic_xchg(&coldboot_lottery, 1) == 0)
coldboot = true;
if (sbi_platform_cold_boot_allowed(plat, hartid)) {
if (next_mode_supported &&
atomic_xchg(&coldboot_lottery, 1) == 0)
coldboot = true;
}
/*
* Do platform specific nascent (very early) initialization so