diff --git a/cmd/i2c.c b/cmd/i2c.c
index e0f8ece597c556d518697ff91d610632d1c3e2e0..038f97c261b14f0dae5f487b12981ce484c35b78 100644
--- a/cmd/i2c.c
+++ b/cmd/i2c.c
@@ -768,7 +768,7 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
 #endif
 		if (ret)
 			err++;
-		crc = crc32 (crc, &byte, 1);
+		crc = crc32(crc, &byte, 1);
 		addr++;
 	}
 	if (err > 0)
diff --git a/include/u-boot/crc.h b/include/u-boot/crc.h
index b42bcda2b3110fa30848b2747e0b408c049e3566..1086d2168ced4dd2a0610d52e5905d91ea5d7f73 100644
--- a/include/u-boot/crc.h
+++ b/include/u-boot/crc.h
@@ -38,9 +38,47 @@ void crc16_ccitt_wd_buf(const uint8_t *in, uint len,
 			uint8_t *out, uint chunk_sz);
 
 /* lib/crc32.c */
-uint32_t crc32 (uint32_t, const unsigned char *, uint);
-uint32_t crc32_wd (uint32_t, const unsigned char *, uint, uint);
-uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint);
+
+/**
+ * crc32 - Calculate the CRC32 for a block of data
+ *
+ * @crc: Input crc to chain from a previous calculution (use 0 to start a new
+ *	calculation)
+ * @buf: Bytes to checksum
+ * @len: Number of bytes to checksum
+ * @return checksum value
+ */
+uint32_t crc32(uint32_t crc, const unsigned char *buf, uint len);
+
+/**
+ * crc32_wd - Calculate the CRC32 for a block of data (watchdog version)
+ *
+ * This checksums the data @chunk_sz bytes at a time, calling WATCHDOG_RESET()
+ * after each chunk, to prevent the watchdog from firing.
+ *
+ * @crc: Input crc to chain from a previous calculution (use 0 to start a new
+ *	calculation)
+ * @buf: Bytes to checksum
+ * @len: Number of bytes to checksum
+ * @chunk_sz: Chunk size to use between watchdog resets
+ * @return checksum
+ */
+uint32_t crc32_wd(uint32_t crc, const unsigned char *buf, uint len,
+		  uint chunk_sz);
+
+/**
+ * crc32_no_comp - Calculate the CRC32 for a block of data (no one's compliment)
+ *
+ * This version uses a different algorithm which doesn't use one's compliment.
+ * JFFS2 (and other things?) use this.
+ *
+ * @crc: Input crc to chain from a previous calculution (use 0 to start a new
+ *	calculation)
+ * @buf: Bytes to checksum
+ * @len: Number of bytes to checksum
+ * @return checksum value
+ */
+uint32_t crc32_no_comp(uint32_t crc, const unsigned char *buf, uint len);
 
 /**
  * crc32_wd_buf - Perform CRC32 on a buffer and return result in buffer
@@ -50,11 +88,34 @@ uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint);
  * @output:	Place to put checksum result (4 bytes)
  * @chunk_sz:	Trigger watchdog after processing this many bytes
  */
-void crc32_wd_buf(const unsigned char *input, uint ilen,
-		    unsigned char *output, uint chunk_sz);
+void crc32_wd_buf(const uint8_t *input, uint ilen, uint8_t *output,
+		  uint chunk_sz);
 
 /* lib/crc32c.c */
-void crc32c_init(uint32_t *, uint32_t);
-uint32_t crc32c_cal(uint32_t, const char *, int, uint32_t *);
+
+/**
+ * crc32c_init() - Set up a the CRC32 table
+ *
+ * This sets up 256-item table to aid in CRC32 calculation
+ *
+ * @crc32c_table: Place to put table
+ * @pol: polynomial to use
+ */
+void crc32c_init(uint32_t *crc32c_table, uint32_t pol);
+
+/**
+ * crc32c_cal() - Perform CRC32 on a buffer given a table
+ *
+ * This algorithm uses the table (set up by crc32c_init() to speed up
+ * processing.
+ *
+ * @crc: Previous crc (use 0 at start)
+ * @data: Data bytes to checksum
+ * @length: Number of bytes to process
+ * @crc32c_table:: CRC table
+ * @return checksum value
+ */
+uint32_t crc32c_cal(uint32_t crc, const char *data, int length,
+		    uint32_t *crc32c_table);
 
 #endif /* _UBOOT_CRC_H */
diff --git a/lib/crc32.c b/lib/crc32.c
index eee21f8d73988e6eb015a680af0dae37eec022da..dc7e183f1819f53cb31a6eb79e76862fdf9dce05 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -244,12 +244,12 @@ uint32_t crc32_wd(uint32_t crc, const unsigned char *buf, uInt len,
 		chunk = end - curr;
 		if (chunk > chunk_sz)
 			chunk = chunk_sz;
-		crc = crc32 (crc, curr, chunk);
+		crc = crc32(crc, curr, chunk);
 		curr += chunk;
 		WATCHDOG_RESET ();
 	}
 #else
-	crc = crc32 (crc, buf, len);
+	crc = crc32(crc, buf, len);
 #endif
 
 	return crc;
diff --git a/tools/envcrc.c b/tools/envcrc.c
index 4b3b828af0fd160084f62be47fcee6341bc4fe3b..6e4360802719ca3f65d17fdc805430ae0f001bf4 100644
--- a/tools/envcrc.c
+++ b/tools/envcrc.c
@@ -58,7 +58,7 @@ extern unsigned int env_size;
 extern env_t embedded_environment;
 #endif	/* CONFIG_BUILD_ENVCRC */
 
-extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
+extern uint32_t crc32(uint32_t, const unsigned char *, unsigned int);
 
 int main (int argc, char **argv)
 {
@@ -88,7 +88,7 @@ int main (int argc, char **argv)
 			memset(dataptr + eoe, pad, datasize - eoe);
 	}
 
-	crc = crc32 (0, dataptr, datasize);
+	crc = crc32(0, dataptr, datasize);
 
 	/* Check if verbose mode is activated passing a parameter to the program */
 	if (argc > 1) {