console: Use flush() before panic and reset
To make sure the panic and the reset messages will go out, console flush() should be used.
Sleep periods do not work in early u-boot phase when timer driver is not initialized yet.
Reference: https://lists.denx.de/pipermail/u-boot/2023-March/512233.html
Signed-off-by: Tony Dinh <mibodhi@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/lib/reset.c b/arch/arm/lib/reset.c
index 95169ba..3e051e3 100644
--- a/arch/arm/lib/reset.c
+++ b/arch/arm/lib/reset.c
@@ -25,6 +25,7 @@
#include <cpu_func.h>
#include <irq_func.h>
#include <linux/delay.h>
+#include <stdio.h>
__weak void reset_misc(void)
{
@@ -33,8 +34,7 @@
int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
puts ("resetting ...\n");
-
- mdelay(50); /* wait 50 ms */
+ flush();
disable_interrupts();
diff --git a/lib/panic.c b/lib/panic.c
index 58382ac..66ae17f 100644
--- a/lib/panic.c
+++ b/lib/panic.c
@@ -15,6 +15,7 @@
#include <command.h>
#endif
#include <linux/delay.h>
+#include <stdio.h>
static void panic_finish(void) __attribute__ ((noreturn));
@@ -24,7 +25,8 @@
#if defined(CONFIG_PANIC_HANG)
hang();
#else
- udelay(100000); /* allow messages to go out */
+ flush(); /* flush the panic message before reset */
+
do_reset(NULL, 0, 0, NULL);
#endif
while (1)