From 2e6a0f805298f943cdfa77be5bbeadc2bbf0006f Mon Sep 17 00:00:00 2001
From: Nico Huber <nico.huber@secunet.com>
Date: Thu, 24 Oct 2019 15:01:33 +0200
Subject: lib/uuid: Add UUID parsing function
Implement a simple function that parses a canonical UUID string into the
common byte representation. Inspired by acpigen_write_uuid().
Change-Id: Ia1bd883c740873699814fde6c6ddc1937a40093e
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36297
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
src/lib/Makefile.inc | 2 ++
src/lib/uuid.c | 35 +++++++++++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
create mode 100644 src/lib/uuid.c
(limited to 'src/lib')
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index e5678ffdf1..da7b4bbdbc 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -346,3 +346,5 @@ cbfs-files-$(CONFIG_GENERIC_SPD_BIN) += spd.bin
spd.bin-file := $(LIB_SPD_BIN)
spd.bin-type := spd
endif
+
+ramstage-y += uuid.c
diff --git a/src/lib/uuid.c b/src/lib/uuid.c
new file mode 100644
index 0000000000..b5c00d7efb
--- /dev/null
+++ b/src/lib/uuid.c
@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#include <stdint.h>
+#include <lib.h>
+#include <uuid.h>
+
+int parse_uuid(uint8_t *const uuid, const char *const uuid_str)
+{
+ const uint8_t order[] = { 3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15 };
+ uint8_t uuid_binstr[UUID_LEN];
+ unsigned int i;
+
+ if (strlen(uuid_str) != UUID_STRLEN)
+ return -1;
+ if (uuid_str[8] != '-' || uuid_str[13] != '-' ||
+ uuid_str[18] != '-' || uuid_str[23] != '-')
+ return -1;
+ if (hexstrtobin(uuid_str, uuid_binstr, UUID_LEN) != UUID_LEN)
+ return -1;
+ for (i = 0; i < UUID_LEN; ++i)
+ uuid[i] = uuid_binstr[order[i]];
+
+ return 0;
+}
--
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