lib: add uuid_str_to_bin for use with bootp and PXE uuid

Signed-off-by: Jason Hobbs <jason.hobbs@calxeda.com>

3 files changed, 57 insertions, 0 deletions

diff --git a/include/common.h b/include/common.h
index a3f31530e..0c4a91e0a 100644
--- a/include/common.h
+++ b/include/common.h
@@ -660,6 +660,9 @@ int strcmp_compar(const void *, const void *);
 /* lib/time.c */
 void	udelay        (unsigned long);
 
+/* lib/uuid.c */
+void uuid_str_to_bin(const char *uuid, unsigned char *out);
+
 /* lib/vsprintf.c */
 ulong	simple_strtoul(const char *cp,char **endp,unsigned int base);
 int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
diff --git a/lib/Makefile b/lib/Makefile
index 884f64c00..075bb8c28 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -55,6 +55,7 @@ COBJS-y += ctype.o
 COBJS-y += div64.o
 COBJS-y += string.o
 COBJS-y += time.o
+COBJS-$(CONFIG_BOOTP_PXE) += uuid.o
 COBJS-y += vsprintf.o
 
 COBJS	:= $(COBJS-y)
diff --git a/lib/uuid.c b/lib/uuid.c
new file mode 100644
index 000000000..227024564
--- /dev/null
+++ b/lib/uuid.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include "common.h"
+
+/*
+ * 0        9    14   19   24
+ * xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+ *    le     le   le   be       be
+ */
+void uuid_str_to_bin(const char *uuid, unsigned char *out)
+{
+	uint16_t tmp16;
+	uint32_t tmp32;
+	uint64_t tmp64;
+
+	if (!uuid || !out)
+		return;
+
+	tmp32 = cpu_to_le32(simple_strtoul(uuid, NULL, 16));
+	memcpy(out, &tmp32, 4);
+
+	tmp16 = cpu_to_le16(simple_strtoul(uuid + 9, NULL, 16));
+	memcpy(out + 4, &tmp16, 2);
+
+	tmp16 = cpu_to_le16(simple_strtoul(uuid + 14, NULL, 16));
+	memcpy(out + 6, &tmp16, 2);
+
+	tmp16 = cpu_to_be16(simple_strtoul(uuid + 19, NULL, 16));
+	memcpy(out + 8, &tmp16, 2);
+
+	tmp64 = cpu_to_be64(simple_strtoull(uuid + 24, NULL, 16));
+	memcpy(out + 10, (char *)&tmp64 + 2, 6);
+}