X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=lib_generic%2Fmd5.c;h=a9aae4682f69d2ce07933e2a4018bc0c14c98102;hb=1730edf76c54381475e2da11f75b1ce563c4e62c;hp=3cee431c71ebda31f8d442c89e7733189f7b0e65;hpb=20a14a42a25f72e379f38460b8a8484667536795;p=platform%2Fkernel%2Fu-boot.git

diff --git a/lib_generic/md5.c b/lib_generic/md5.c
index 3cee431..a9aae46 100644
--- a/lib_generic/md5.c
+++ b/lib_generic/md5.c
@@ -25,6 +25,12 @@
    and to fit the cifs vfs by
    Steve French sfrench@us.ibm.com */
 
+#ifndef USE_HOSTCC
+#include <common.h>
+#else
+#include <string.h>
+#endif /* USE_HOSTCC */
+#include <watchdog.h>
 #include <linux/types.h>
 #include <linux/string.h>
 #include <u-boot/md5.h>
@@ -272,3 +278,39 @@ md5 (unsigned char *input, int len, unsigned char output[16])
 	MD5Update(&context, input, len);
 	MD5Final(output, &context);
 }
+
+
+/*
+ * Calculate and store in 'output' the MD5 digest of 'len' bytes at 'input'.
+ * 'output' must have enough space to hold 16 bytes. If 'chunk' Trigger the
+ * watchdog every 'chunk_sz' bytes of input processed.
+ */
+void
+md5_wd (unsigned char *input, int len, unsigned char output[16],
+	unsigned int chunk_sz)
+{
+	struct MD5Context context;
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+	unsigned char *end, *curr;
+	int chunk;
+#endif
+
+	MD5Init(&context);
+
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+	curr = input;
+	end = input + len;
+	while (curr < end) {
+		chunk = end - curr;
+		if (chunk > chunk_sz)
+			chunk = chunk_sz;
+		MD5Update(&context, curr, chunk);
+		curr += chunk;
+		WATCHDOG_RESET ();
+	}
+#else
+	MD5Update(&context, input, len);
+#endif
+
+	MD5Final(output, &context);
+}