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lib: sbi_platform: Add platform specific pmp_set() and pmp_disable()

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Allow platforms to implement platform specific PMP setup and
PMP disable functions which are called before actual PMP CSRs
are configured.

Also, implement pmp_set() and pmp_disable() for MIPS P8700.

Signed-off-by: Chao-ying Fu <cfu@mips.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20250614172756.153902-1-apatel@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Chao-ying Fu
2025-06-14 22:57:56 +05:30
committed by Anup Patel
parent 324021423d
commit 13abda5169
4 changed files with 144 additions and 0 deletions
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2
lib/sbi/sbi_domain_context.c
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@@ -15,6 +15,7 @@
#include <sbi/sbi_string.h>
#include <sbi/sbi_domain.h>
#include <sbi/sbi_domain_context.h>
#include <sbi/sbi_platform.h>
#include <sbi/sbi_trap.h>
/** Context representation for a hart within a domain */
@@ -115,6 +116,7 @@ static void switch_to_next_domain_context(struct hart_context *ctx,
/* Reconfigure PMP settings for the new domain */
for (int i = 0; i < pmp_count; i++) {
sbi_platform_pmp_disable(sbi_platform_thishart_ptr(), i);
pmp_disable(i);
}
sbi_hart_pmp_configure(scratch);