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include: sbi: Introduce nascent_init() platform callback

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We introduce nascent_init() platform callback which will allow
platforms to do very early initialization of platform specific
per-HART CSRs and per-HART devices.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel
2021-06-29 13:14:04 +05:30
committed by Anup Patel
parent 5f56314618
commit 10509405b2
2 changed files with 28 additions and 0 deletions
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8
lib/sbi/sbi_init.c
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@@ -494,6 +494,14 @@ void __noreturn sbi_init(struct sbi_scratch *scratch)
if (next_mode_supported && atomic_xchg(&coldboot_lottery, 1) == 0)
coldboot = TRUE;
/*
* Do platform specific nascent (very early) initialization so
* that platform can initialize platform specific per-HART CSRs
* or per-HART devices.
*/
if (sbi_platform_nascent_init(plat))
sbi_hart_hang();
if (coldboot)
init_coldboot(scratch, hartid);
else