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lib: sbi_domain: Re-work boot-time assignment of HARTs to non-ROOT domains

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Assign a non-ROOT domain to a HART on first come first serve basis if the
HART is listed as a possible HART of the non-ROOT domain. If no non-ROOT
domain list a HART as possible HART then the HART is assigned to the ROOT
domain.

This allows us to drop the OpenSBI specific DT property from each CPU DT
node (aka "opensbi-domain" Dt property).

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Reviewed-by: Pawandeep Oza <pawandeep.oza@oss.qualcomm.com>
Tested-by: Pawandeep Oza <pawandeep.oza@oss.qualcomm.com>
Reviewed-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Link: https://lore.kernel.org/r/20260905131748.922920-3-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Anup Patel
2026-09-16 09:21:21 +05:30
committed by Anup Patel
parent 6dc5a896b1
commit 71faf5a307
5 changed files with 42 additions and 142 deletions
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include/sbi_utils/fdt/fdt_domain.h
+1 -2
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@@ -50,8 +50,7 @@ int fdt_iterate_each_memregion(void *fdt, int domain_offset, void *opaque,
*
* This routine:
* 1. Disables MMIO devices not accessible to the coldboot HART domain
* 2. Removes "opensbi-domain" DT property from CPU DT nodes
* 3. Removes domain configuration DT node under /chosen DT node
* 2. Removes domain configuration DT node under /chosen DT node
*
* It is recommended that platform support call this function in
* their final_init() platform operation.