sha1: Remove sha1 non-watchdog API

We don't need an API specially for non-watchdog since sha1_csum_wd
supports it by disabling CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG.
Set 0x10000 as default chunk size for SHA1.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

board/gdsys/a38x/hre.c

@@ -166,7 +166,7 @@ static int find_key(struct udevice *tpm, const uint8_t auth[20],
 			return -1;
 		if (err)
 			continue;
-		sha1_csum(buf, buf_len, digest);
+		sha1_csum_wd(buf, buf_len, digest, SHA1_DEF_CHUNK_SZ);
 		if (!memcmp(digest, pubkey_digest, 20)) {
 			*handle = key_handles[i];
 			return 0;

include/u-boot/sha1.h

@@ -39,6 +39,8 @@ extern "C" {
 #define SHA1_SUM_LEN	20
 #define SHA1_DER_LEN	15
 
+#define SHA1_DEF_CHUNK_SZ 0x10000
+
 extern const uint8_t sha1_der_prefix[];
 
 #if defined(CONFIG_MBEDTLS_LIB_CRYPTO)
@@ -81,16 +83,6 @@ void sha1_update(sha1_context *ctx, const unsigned char *input,
  */
 void sha1_finish( sha1_context *ctx, unsigned char output[20] );
 
-/**
- * \brief	   Output = SHA-1( input buffer )
- *
- * \param input    buffer holding the  data
- * \param ilen	   length of the input data
- * \param output   SHA-1 checksum result
- */
-void sha1_csum(const unsigned char *input, unsigned int ilen,
-		unsigned char *output);
-
 /**
  * \brief	   Output = SHA-1( input buffer ), with watchdog triggering
  *

lib/sha1.c

@@ -304,19 +304,6 @@ void sha1_finish (sha1_context * ctx, unsigned char output[20])
 	PUT_UINT32_BE (ctx->state[4], output, 16);
 }
 
-/*
- * Output = SHA-1( input buffer )
- */
-void sha1_csum(const unsigned char *input, unsigned int ilen,
-	       unsigned char *output)
-{
-	sha1_context ctx;
-
-	sha1_starts (&ctx);
-	sha1_update (&ctx, input, ilen);
-	sha1_finish (&ctx, output);
-}
-
 /*
  * Output = SHA-1( input buffer ). Trigger the watchdog every 'chunk_sz'
  * bytes of input processed.

lib/tpm-v1.c

@@ -871,7 +871,7 @@ u32 tpm1_find_key_sha1(struct udevice *dev, const u8 auth[20],
 			return -1;
 		if (err)
 			continue;
-		sha1_csum(buf, buf_len, digest);
+		sha1_csum_wd(buf, buf_len, digest, SHA1_DEF_CHUNK_SZ);
 		if (!memcmp(digest, pubkey_digest, 20)) {
 			*handle = key_handles[i];
 			return 0;