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lib: sbi: Introduce IPI device rating

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A platform can have multiple IPI devices (such as ACLINT MSWI,
AIA IMSIC, etc). Currently, OpenSBI rely on platform calling
the sbi_ipi_set_device() function in correct order and prefer
the first avaiable IPI device which is fragile.

Instead of the above, introduce IPI device rating and prefer
the highest rated IPI device. This further allows extending
the sbi_ipi_raw_clear() to clear all available IPI devices.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Tested-by: Nick Hu <nick.hu@sifive.com>
Link: https://lore.kernel.org/r/20250904052410.546818-2-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel authored and Anup Patel committed 2025-09-16 09:56:31 +05:30
1 parent 17b8d1900d
commit ee92afa638
6 files changed
+47 -14
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lib/sbi/sbi_init.c
+1 -1
View File
@@ -507,7 +507,7 @@ static void __noreturn init_warmboot(struct sbi_scratch *scratch, u32 hartid)
if (hstate == SBI_HSM_STATE_SUSPENDED) {
init_warm_resume(scratch, hartid);
} else {
sbi_ipi_raw_clear();
sbi_ipi_raw_clear(true);
init_warm_startup(scratch, hartid);
}
}