3 files changed, 29 insertions, 0 deletions
diff --git a/src/commonlib/Makefile.mk b/src/commonlib/Makefile.mk
index 30aaddf2cc..00f3629c1e 100644
--- a/src/commonlib/Makefile.mk
+++ b/src/commonlib/Makefile.mk
@@ -65,3 +65,7 @@ decompressor-y += bsd/gcd.c
 all-y += bsd/gcd.c
 
 all-y += bsd/ipchksum.c
+
+decompressor-y += bsd/string.c
+smm-y += bsd/string.c
+all-y += bsd/string.c
diff --git a/src/commonlib/bsd/include/commonlib/bsd/string.h b/src/commonlib/bsd/include/commonlib/bsd/string.h
new file mode 100644
index 0000000000..bbd4754800
--- /dev/null
+++ b/src/commonlib/bsd/include/commonlib/bsd/string.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#ifndef _COMMONLIB_BSD_STRING_H_
+#define _COMMONLIB_BSD_STRING_H_
+
+#include <stdint.h>
+
+unsigned int skip_atoi(char **ptr);
+
+#endif  /* _COMMONLIB_BSD_STRING_H_ */
diff --git a/src/commonlib/bsd/string.c b/src/commonlib/bsd/string.c
new file mode 100644
index 0000000000..3286d41b1c
--- /dev/null
+++ b/src/commonlib/bsd/string.c
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#include <commonlib/bsd/string.h>
+#include <ctype.h>
+
+unsigned int skip_atoi(char **ptr)
+{
+	unsigned int result = 0;
+	char *str;
+
+	for (str = *ptr; isdigit(str[0]); str++)
+		result = result * 10 + (str[0] - '0');
+	*ptr = str;
+	return result;
+}