scripts: bareboxcrc32 as host and target userspacetool

This patch adds the crc32 command to be build
as host and optionally as target tool.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 4 insertions, 59 deletions

diff --git a/commands/crc.c b/commands/crc.c
index ee8dacff0b..824dda4c7d 100644
--- a/commands/crc.c
+++ b/commands/crc.c
@@ -21,66 +21,8 @@
 #include <command.h>
 #include <fs.h>
 #include <getopt.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <xfuncs.h>
 #include <malloc.h>
-#include <linux/ctype.h>
-
-static int file_crc(char* filename, ulong start, ulong size, ulong *crc,
-		    ulong *total)
-{
-	int fd, now;
-	int ret = 0;
-	char *buf;
-
-	*total = 0;
-	*crc = 0;
-
-	fd = open(filename, O_RDONLY);
-	if (fd < 0) {
-		printf("open %s: %s\n", filename, errno_str());
-		return fd;
-	}
-
-	if (start > 0) {
-		off_t lseek_ret;
-		errno = 0;
-		lseek_ret = lseek(fd, start, SEEK_SET);
-		if (lseek_ret == (off_t)-1 && errno) {
-			perror("lseek");
-			ret = -1;
-			goto out;
-		}
-	}
-
-	buf = xmalloc(4096);
-
-	while (size) {
-		now = min((ulong)4096, size);
-		now = read(fd, buf, now);
-		if (now < 0) {
-			ret = now;
-			perror("read");
-			goto out_free;
-		}
-		if (!now)
-			break;
-		*crc = crc32(*crc, buf, now);
-		size -= now;
-		*total += now;
-	}
-
-	printf ("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx",
-			filename, start, start + *total - 1, *crc);
-
-out_free:
-	free(buf);
-out:
-	close(fd);
-
-	return ret;
-}
+#include <environment.h>
 
 static int crc_from_file(const char* file, ulong *crc)
 {
@@ -143,6 +85,9 @@ static int do_crc(int argc, char *argv[])
 	if (file_crc(filename, start, size, &crc, &total) < 0)
 		return 1;
 
+	printf("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx",
+			filename, (ulong)start, (ulong)start + total - 1, crc);
+
 #ifdef CONFIG_CMD_CRC_CMP
 	if (vfilename) {
 		size = total;