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From: Ian Lepore <ian@FreeBSD.org>
Date: Sat, 1 Mar 2014 19:25:24 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r262666 - head/sys/boot/uboot/common
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Author: ian
Date: Sat Mar  1 19:25:23 2014
New Revision: 262666
URL: http://svnweb.freebsd.org/changeset/base/262666

Log:
  If we can't find the u-boot api signature, exit with an error status that
  includes "badab1"; u-boot displays the status in hex, so this may help
  give some clue about why ubldr isn't working (more than -1 does anyway).

Modified:
  head/sys/boot/uboot/common/main.c

Modified: head/sys/boot/uboot/common/main.c
==============================================================================
--- head/sys/boot/uboot/common/main.c	Sat Mar  1 19:06:43 2014	(r262665)
+++ head/sys/boot/uboot/common/main.c	Sat Mar  1 19:25:23 2014	(r262666)
@@ -124,15 +124,21 @@ main(void)
 	struct open_file f;
 	const char * loaderdev;
 
+	/*
+	 * If we can't find the magic signature and related info, exit with a
+	 * unique error code that U-Boot reports as "## Application terminated,
+	 * rc = 0xnnbadab1". Hopefully 'badab1' looks enough like "bad api" to
+	 * provide a clue. It's better than 0xffffffff anyway.
+	 */
 	if (!api_search_sig(&sig))
-		return (-1);
+		return (0x01badab1);
 
 	syscall_ptr = sig->syscall;
 	if (syscall_ptr == NULL)
-		return (-2);
+		return (0x02badab1);
 
 	if (sig->version > API_SIG_VERSION)
-		return (-3);
+		return (0x03badab1);
 
         /* Clear BSS sections */
 	bzero(__sbss_start, __sbss_end - __sbss_start);