diff --git a/qiboot/include/qi.h b/qiboot/include/qi.h
index 8d46ac0..84fdc50 100644
--- a/qiboot/include/qi.h
+++ b/qiboot/include/qi.h
@@ -126,6 +126,10 @@ void printdec(int n);
 void hexdump(unsigned char *start, int len);
 void udelay(int n);
 
+/* phase2 only */
+void setnybble(char *p, unsigned char n);
+void set8(char *p, unsigned char n);
+void set32(char *p, unsigned int u);
 
 unsigned long crc32(unsigned long crc, const unsigned char *buf,
 							      unsigned int len);
diff --git a/qiboot/src/utils-phase2.c b/qiboot/src/utils-phase2.c
index f02d5b1..bbbd672 100644
--- a/qiboot/src/utils-phase2.c
+++ b/qiboot/src/utils-phase2.c
@@ -109,3 +109,26 @@ void hexdump(unsigned char *start, int len)
 		len -= 16;
 	}
 }
+
+void setnybble(char *p, unsigned char n)
+{
+	if (n < 10)
+		*p = '0' + n;
+	else
+		*p = 'a' + n - 10;
+}
+
+void set8(char *p, unsigned char n)
+{
+	setnybble(p, (n >> 4) & 15);
+	setnybble(p + 1, n & 15);
+}
+
+void set32(char *p, unsigned int u)
+{
+	set8(p, u >> 24);
+	set8(p + 2, u >> 16);
+	set8(p + 4, u >> 8);
+	set8(p + 6, u);
+}
+