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lib: pmp_set/pmp_get moved errors from runtime to compile time

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pmp_set/pmp_get calculates the location of the CSR register separately
through conditional compilation. In the case of non-32-bit and 64-bit,
we can report an error directly through #error without putting it at
runtime

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W
2022-03-16 00:22:38 +08:00
committed by Anup Patel
parent 4998a712b2
commit 2dfbd3c0e2
1 changed files with 2 additions and 2 deletions
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4
lib/sbi/riscv_asm.c
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@@ -261,7 +261,7 @@ int pmp_set(unsigned int n, unsigned long prot, unsigned long addr,
pmpcfg_csr = (CSR_PMPCFG0 + (n >> 2)) & ~1;
pmpcfg_shift = (n & 7) << 3;
#else
return SBI_ENOTSUPP;
# error "Unexpected __riscv_xlen"
#endif
pmpaddr_csr = CSR_PMPADDR0 + n;
@@ -312,7 +312,7 @@ int pmp_get(unsigned int n, unsigned long *prot_out, unsigned long *addr_out,
pmpcfg_csr = (CSR_PMPCFG0 + (n >> 2)) & ~1;
pmpcfg_shift = (n & 7) << 3;
#else
return SBI_ENOTSUPP;
# error "Unexpected __riscv_xlen"
#endif
pmpaddr_csr = CSR_PMPADDR0 + n;