[U-Boot] [PATCH 2/8] hash: Export functions to find and show hash

[Simon Glass]

These functions are generally useful for displaying a hash value and finding
available algorithms, so export them.

Signed-off-by: Simon Glass <s...@chromium.org>
---
 common/hash.c  | 13 ++++++-------
 include/hash.h | 22 ++++++++++++++++++++++
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/common/hash.c b/common/hash.c
index 722c40b..7b34e83 100644
--- a/common/hash.c
+++ b/common/hash.c
@@ -204,7 +204,7 @@ static int parse_verify_sum(struct hash_algo *algo, char 
*verify_str, u8 *vsum,
        return 0;
 }
 
-static struct hash_algo *find_hash_algo(const char *name)
+struct hash_algo *hash_find_algo(const char *name)
 {
        int i;
 
@@ -216,8 +216,7 @@ static struct hash_algo *find_hash_algo(const char *name)
        return NULL;
 }
 
-static void show_hash(struct hash_algo *algo, ulong addr, ulong len,
-                     u8 *output)
+void hash_show(struct hash_algo *algo, ulong addr, ulong len, u8 *output)
 {
        int i;
 
@@ -231,7 +230,7 @@ int hash_block(const char *algo_name, const void *data, 
unsigned int len,
 {
        struct hash_algo *algo;
 
-       algo = find_hash_algo(algo_name);
+       algo = hash_find_algo(algo_name);
        if (!algo) {
                debug("Unknown hash algorithm '%s'\n", algo_name);
                return -EPROTONOSUPPORT;
@@ -265,7 +264,7 @@ int hash_command(const char *algo_name, int flags, 
cmd_tbl_t *cmdtp, int flag,
                u8 vsum[HASH_MAX_DIGEST_SIZE];
                void *buf;
 
-               algo = find_hash_algo(algo_name);
+               algo = hash_find_algo(algo_name);
                if (!algo) {
                        printf("Unknown hash algorithm '%s'\n", algo_name);
                        return CMD_RET_USAGE;
@@ -298,7 +297,7 @@ int hash_command(const char *algo_name, int flags, 
cmd_tbl_t *cmdtp, int flag,
                        if (memcmp(output, vsum, algo->digest_size) != 0) {
                                int i;
 
-                               show_hash(algo, addr, len, output);
+                               hash_show(algo, addr, len, output);
                                printf(" != ");
                                for (i = 0; i < algo->digest_size; i++)
                                        printf("%02x", vsum[i]);
@@ -306,7 +305,7 @@ int hash_command(const char *algo_name, int flags, 
cmd_tbl_t *cmdtp, int flag,
                                return 1;
                        }
                } else {
-                       show_hash(algo, addr, len, output);
+                       hash_show(algo, addr, len, output);
                        printf("\n");
 
                        if (argc) {
diff --git a/include/hash.h b/include/hash.h
index e92d272..c69bc25 100644
--- a/include/hash.h
+++ b/include/hash.h
@@ -77,4 +77,26 @@ int hash_command(const char *algo_name, int flags, cmd_tbl_t 
*cmdtp, int flag,
 int hash_block(const char *algo_name, const void *data, unsigned int len,
               uint8_t *output, int *output_size);
 
+/**
+ * hash_find_algo() - Find an algorithm by name
+ *
+ * @name:              Name of algorithm to search for
+ * @return pointer to algorithm structure, or NULL if not found
+ */
+struct hash_algo *hash_find_algo(const char *name);
+
+/**
+ * hash_show() - Print out a hash algorithm and value
+ *
+ * You will get a message like this (without a newline at the end):
+ *
+ * "sha1 for 9eb3337c ... 9eb3338f ==> 
7942ef1df479fd3130f716eb9613d107dab7e257"
+ *
+ * @algo:              Algorithm used for hash
+ * @addr:              Address of data that was hashed
+ * @len:               Length of data that was hashed
+ * @output:            Hash value to display
+ */
+void hash_show(struct hash_algo *algo, ulong addr, ulong len, u8 *output);
+
 #endif
-- 
1.8.4

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