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lib: sbi_domain: add SBI_DOMAIN_MEMREGION_FW memregion flag

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Add a new memregion flag, SBI_DOMAIN_MEMREGION_FW and mark the
OpenSBI code and data regions.

Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251008084444.3525615-6-peter.lin@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Yu-Chien Peter Lin 2025-10-08 16:44:41 +08:00 committed by Anup Patel
parent 34657b377f
commit b34caeef81
2 changed files with 7 additions and 2 deletions
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1
include/sbi/sbi_domain.h
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@ -157,6 +157,7 @@ struct sbi_domain_memregion {
SBI_DOMAIN_MEMREGION_M_EXECUTABLE)
#define SBI_DOMAIN_MEMREGION_MMIO (1UL << 31)
#define SBI_DOMAIN_MEMREGION_FW (1UL << 30)
unsigned long flags;
};

8
lib/sbi/sbi_domain.c
View File

@ -538,6 +538,8 @@ void sbi_domain_dump(const struct sbi_domain *dom, const char *suffix)
sbi_printf("M: ");
if (reg->flags & SBI_DOMAIN_MEMREGION_MMIO)
sbi_printf("%cI", (k++) ? ',' : '(');
if (reg->flags & SBI_DOMAIN_MEMREGION_FW)
sbi_printf("%cF", (k++) ? ',' : '(');
if (reg->flags & SBI_DOMAIN_MEMREGION_M_READABLE)
sbi_printf("%cR", (k++) ? ',' : '(');
if (reg->flags & SBI_DOMAIN_MEMREGION_M_WRITABLE)
@ -891,13 +893,15 @@ int sbi_domain_init(struct sbi_scratch *scratch, u32 cold_hartid)
/* Root domain firmware memory region */
sbi_domain_memregion_init(scratch->fw_start, scratch->fw_rw_offset,
(SBI_DOMAIN_MEMREGION_M_READABLE |
SBI_DOMAIN_MEMREGION_M_EXECUTABLE),
SBI_DOMAIN_MEMREGION_M_EXECUTABLE |
SBI_DOMAIN_MEMREGION_FW),
&root_memregs[root_memregs_count++]);
sbi_domain_memregion_init((scratch->fw_start + scratch->fw_rw_offset),
(scratch->fw_size - scratch->fw_rw_offset),
(SBI_DOMAIN_MEMREGION_M_READABLE |
SBI_DOMAIN_MEMREGION_M_WRITABLE),
SBI_DOMAIN_MEMREGION_M_WRITABLE |
SBI_DOMAIN_MEMREGION_FW),
&root_memregs[root_memregs_count++]);
root.fw_region_inited = true;