From fc474da559677770b90ad295d5331144c52c5a98 Mon Sep 17 00:00:00 2001
From: Joseph Chen <chenjh@rock-chips.com>
Date: Tue, 5 Nov 2019 12:21:22 +0800
Subject: [PATCH] lib: sha256: add sha256_csum()

Change-Id: I3b053f9c07df0d124cdbde9f905e309bcd11c84e
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
---
 include/u-boot/sha256.h |  2 ++
 lib/sha256.c            | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/u-boot/sha256.h b/include/u-boot/sha256.h
index 9aa1251789..e63f3365e9 100644
--- a/include/u-boot/sha256.h
+++ b/include/u-boot/sha256.h
@@ -21,5 +21,7 @@ void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
 
 void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
 		unsigned char *output, unsigned int chunk_sz);
+void sha256_csum(const unsigned char *input, unsigned int ilen,
+		 unsigned char *output);
 
 #endif /* _SHA256_H */
diff --git a/lib/sha256.c b/lib/sha256.c
index 7f5a3618d0..251825ce0f 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -257,6 +257,19 @@ void sha256_finish(sha256_context * ctx, uint8_t digest[32])
 	PUT_UINT32_BE(ctx->state[7], digest, 28);
 }
 
+/*
+ * Output = SHA-256( input buffer ).
+ */
+void sha256_csum(const unsigned char *input, unsigned int ilen,
+		 unsigned char *output)
+{
+	sha256_context ctx;
+
+	sha256_starts(&ctx);
+	sha256_update(&ctx, input, ilen);
+	sha256_finish(&ctx, output);
+}
+
 /*
  * Output = SHA-256( input buffer ). Trigger the watchdog every 'chunk_sz'
  * bytes of input processed.