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lib: sbi: Fix PMP granularity handling in sbi_hart_map_saddr()

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The sbi_hart_map_saddr() must create PMP mapping of size greater
than or equal to PMP granularity otherwise PMP mapping does not
work when size parameter less than sbi_hart_pmp_granularity(scratch).

Fixes: 6e44ef686a ("lib: sbi: Add functions to map/unmap shared memory")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
This commit is contained in:
Anup Patel
2023-11-19 18:32:10 +05:30
committed by Anup Patel
parent dc0bb19bd2
commit 16bb930533
1 changed files with 2 additions and 1 deletions
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3
lib/sbi/sbi_hart.c
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@@ -508,7 +508,8 @@ int sbi_hart_map_saddr(unsigned long addr, unsigned long size)
if (is_pmp_entry_mapped(SBI_SMEPMP_RESV_ENTRY))
return SBI_ENOSPC;
for (order = log2roundup(size) ; order <= __riscv_xlen; order++) {
for (order = log2roundup(MAX(sbi_hart_pmp_granularity(scratch), size));
order <= __riscv_xlen; order++) {
if (order < __riscv_xlen) {
base = addr & ~((1UL << order) - 1UL);
if ((base <= addr) &&