relocate_to_current_adr: hang directly on error instead of panic()

panic() will format a panic message, turn on a panic LED, dump a
stack trace and finally either restart the system or print a
message to ask the user to restart the system before hanging.

When relocation fails, all of these aren't possible, so instead of
devolving into undefined behavior, fall directly into an infinite loop.

Motivation for this change is to avoid linking printf code when it's
only usage is the relocation error case.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220930154247.756577-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/common.h b/include/common.h
index bd12035688..cf3e0447a0 100644
--- a/include/common.h
+++ b/include/common.h
@@ -43,6 +43,12 @@
  */
 void reginfo(void);
 
+/* For use when unrelocated */
+static inline void __hang(void)
+{
+	while (1);
+}
+
 void __noreturn hang (void);
 
 char *size_human_readable(unsigned long long size);