[PATCH 1/2] crypto: make sha384 and sha512 available in PBL

[Michael Tretter <m.tretter@pengutronix.de>]

On Agilex 5 with VAB (Vendor Authorized Boot), the second stage boot
loader is verified with a sha384 checksum.

Make the sha384 and sha512 functions available in the PBL to be able to
use these functions for vendor authorized boot.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---
 crypto/Makefile          |  1 +
 crypto/sha4.c            | 11 ++++++-----
 include/crypto/pbl-sha.h |  7 +++++++
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/crypto/Makefile b/crypto/Makefile
index 2ac023c3e2fd..6f745a883123 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_DIGEST_SHA256_GENERIC)	+= sha2.o
 pbl-y					+= sha2.o digest.o
 obj-$(CONFIG_DIGEST_SHA384_GENERIC)	+= sha4.o
 obj-$(CONFIG_DIGEST_SHA512_GENERIC)	+= sha4.o
+pbl-y					+= sha4.o
 obj-pbl-y	+= memneq.o
 
 obj-$(CONFIG_CRYPTO_PBKDF2)	+= pbkdf2.o
diff --git a/crypto/sha4.c b/crypto/sha4.c
index 8c94f5011dc2..c700c1a37756 100644
--- a/crypto/sha4.c
+++ b/crypto/sha4.c
@@ -20,6 +20,7 @@
 
 #include <crypto/sha.h>
 #include <crypto/internal.h>
+#include <crypto/pbl-sha.h>
 
 static inline u64 Ch(u64 x, u64 y, u64 z)
 {
@@ -126,7 +127,7 @@ sha512_transform(u64 *state, const u8 *input)
 	state[4] += e; state[5] += f; state[6] += g; state[7] += h;
 }
 
-static int
+int
 sha512_init(struct digest *desc)
 {
 	struct sha512_state *sctx = digest_ctx(desc);
@@ -143,7 +144,7 @@ sha512_init(struct digest *desc)
 	return 0;
 }
 
-static int sha384_init(struct digest *desc)
+int sha384_init(struct digest *desc)
 {
 	struct sha512_state *sctx = digest_ctx(desc);
 	sctx->state[0] = SHA384_H0;
@@ -159,7 +160,7 @@ static int sha384_init(struct digest *desc)
 	return 0;
 }
 
-static int sha512_update(struct digest *desc, const void *in,
+int sha512_update(struct digest *desc, const void *in,
 				unsigned long len)
 {
 	struct sha512_state *sctx = digest_ctx(desc);
@@ -195,7 +196,7 @@ static int sha512_update(struct digest *desc, const void *in,
 	return 0;
 }
 
-static int sha512_final(struct digest *desc, u8 *hash)
+int sha512_final(struct digest *desc, u8 *hash)
 {
 	struct sha512_state *sctx = digest_ctx(desc);
         static u8 padding[128] = { 0x80, };
@@ -226,7 +227,7 @@ static int sha512_final(struct digest *desc, u8 *hash)
 	return 0;
 }
 
-static int sha384_final(struct digest *desc, u8 *hash)
+int sha384_final(struct digest *desc, u8 *hash)
 {
 	u8 D[64];
 
diff --git a/include/crypto/pbl-sha.h b/include/crypto/pbl-sha.h
index 3ccd5151e1a6..dbfb79647462 100644
--- a/include/crypto/pbl-sha.h
+++ b/include/crypto/pbl-sha.h
@@ -24,4 +24,11 @@ static inline int pbl_sha256_ce(const void *buf, size_t len, u8 out[SHA256_DIGES
 }
 #endif
 
+int sha512_init(struct digest *desc);
+int sha512_update(struct digest *desc, const void *data, unsigned long len);
+int sha512_final(struct digest *desc, u8 *out);
+
+int sha384_init(struct digest *desc);
+int sha384_final(struct digest *desc, u8 *out);
+
 #endif /* __PBL-SHA_H_ */

-- 
2.47.3