From f102e0d08d53098dd171de773a5742ab7b66348c Mon Sep 17 00:00:00 2001
From: Caleb Connolly <caleb.connolly@linaro.org>
Date: Fri, 30 Aug 2024 13:34:38 +0100
Subject: [PATCH] tools: mkeficapsule: use u-boot UUID library

Replace the use of libuuid with U-Boot's own UUID library. This prepares
us to add support for generating v5 GUIDs.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
 tools/Makefile       |  8 +++----
 tools/mkeficapsule.c | 52 +++++---------------------------------------
 2 files changed, 9 insertions(+), 51 deletions(-)

diff --git a/tools/Makefile b/tools/Makefile
index 6a4280e366..ee08a9675d 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -246,12 +246,12 @@ HOSTCFLAGS_asn1_compiler.o = -idirafter $(srctree)/include
 
 HOSTCFLAGS_mkeficapsule.o += \
 	$(shell pkg-config --cflags gnutls 2> /dev/null || echo "")
-HOSTCFLAGS_mkeficapsule.o += \
-	$(shell pkg-config --cflags uuid 2> /dev/null || echo "")
 HOSTLDLIBS_mkeficapsule += \
 	$(shell pkg-config --libs gnutls 2> /dev/null || echo "-lgnutls")
-HOSTLDLIBS_mkeficapsule += \
-	$(shell pkg-config --libs uuid 2> /dev/null || echo "-luuid")
+mkeficapsule-objs := generated/lib/uuid.o \
+	generated/lib/sha1.o \
+	$(LIBFDT_OBJS) \
+	mkeficapsule.o
 hostprogs-$(CONFIG_TOOLS_MKEFICAPSULE) += mkeficapsule
 
 mkfwumdata-objs := mkfwumdata.o generated/lib/crc32.o
diff --git a/tools/mkeficapsule.c b/tools/mkeficapsule.c
index 1b53151d41..ede9de2bef 100644
--- a/tools/mkeficapsule.c
+++ b/tools/mkeficapsule.c
@@ -16,13 +16,13 @@
 
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <uuid/uuid.h>
 
 #include <gnutls/gnutls.h>
 #include <gnutls/pkcs7.h>
 #include <gnutls/abstract.h>
 
 #include <version.h>
+#include <u-boot/uuid.h>
 
 #include "eficapsule.h"
 
@@ -578,37 +578,6 @@ err:
 	return ret;
 }
 
-/**
- * convert_uuid_to_guid() - convert UUID to GUID
- * @buf:	UUID binary
- *
- * UUID and GUID have the same data structure, but their binary
- * formats are different due to the endianness. See lib/uuid.c.
- * Since uuid_parse() can handle only UUID, this function must
- * be called to get correct data for GUID when parsing a string.
- *
- * The correct data will be returned in @buf.
- */
-void convert_uuid_to_guid(unsigned char *buf)
-{
-	unsigned char c;
-
-	c = buf[0];
-	buf[0] = buf[3];
-	buf[3] = c;
-	c = buf[1];
-	buf[1] = buf[2];
-	buf[2] = c;
-
-	c = buf[4];
-	buf[4] = buf[5];
-	buf[5] = c;
-
-	c = buf[6];
-	buf[6] = buf[7];
-	buf[7] = c;
-}
-
 static int create_empty_capsule(char *path, efi_guid_t *guid, bool fw_accept)
 {
 	struct efi_capsule_header header = { 0 };
@@ -654,20 +623,10 @@ err:
 
 static void print_guid(void *ptr)
 {
-	int i;
-	efi_guid_t *guid = ptr;
-	const uint8_t seq[] = {
-		3, 2, 1, 0, '-', 5, 4, '-', 7, 6,
-		'-', 8, 9, '-', 10, 11, 12, 13, 14, 15 };
-
-	for (i = 0; i < ARRAY_SIZE(seq); i++) {
-		if (seq[i] == '-')
-			putchar(seq[i]);
-		else
-			printf("%02X", guid->b[seq[i]]);
-	}
+	static char buf[37] = { 0 };
 
-	printf("\n");
+	uuid_bin_to_str(ptr, buf, UUID_STR_FORMAT_GUID | UUID_STR_UPPER_CASE);
+	printf("%s\n", buf);
 }
 
 static uint32_t dump_fmp_payload_header(
@@ -907,11 +866,10 @@ int main(int argc, char **argv)
 					"Image type already specified\n");
 				exit(EXIT_FAILURE);
 			}
-			if (uuid_parse(optarg, uuid_buf)) {
+			if (uuid_str_to_bin(optarg, uuid_buf, UUID_STR_FORMAT_GUID)) {
 				fprintf(stderr, "Wrong guid format\n");
 				exit(EXIT_FAILURE);
 			}
-			convert_uuid_to_guid(uuid_buf);
 			guid = (efi_guid_t *)uuid_buf;
 			break;
 		case 'i':
-- 
2.39.5