lib: sbi: Improve misa_string() implementation

The RISC-V ISA string does not follow alphabetical order. Instead,
we have a RISC-V specific ordering of extensions in the RISC-V ISA
string. This patch improves misa_string() implementation to return
a valid RISC-V ISA string.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

1 files changed, 2 insertions, 13 deletions

diff --git a/include/sbi/riscv_asm.h b/include/sbi/riscv_asm.h
index 6c5c729..6e093ca 100644
--- a/include/sbi/riscv_asm.h
+++ b/include/sbi/riscv_asm.h
@@ -173,19 +173,8 @@ int misa_extension_imp(char ext);
 /* Get MXL field of misa, return -1 on error */
 int misa_xlen(void);
 
-static inline void misa_string(char *out, unsigned int out_sz)
-{
-	unsigned long i;
-
-	for (i = 0; i < 26; i++) {
-		if (misa_extension_imp('A' + i)) {
-			*out = 'A' + i;
-			out++;
-		}
-	}
-	*out = '\0';
-	out++;
-}
+/* Get RISC-V ISA string representation */
+void misa_string(int xlen, char *out, unsigned int out_sz);
 
 int pmp_set(unsigned int n, unsigned long prot, unsigned long addr,
 	    unsigned long log2len);