commit 937b7d89291154386f933900a920df4285601d8c
author Pali Rohár <pali@kernel.org> Mon Sep 05 11:31:21 2022 +0200
committer Tom Rini <trini@konsulko.com> Sat Sep 24 11:34:38 2022 -0400
tree 75203cc106a2c1c340024fdb562be7c9b6d0e4e2
parent 8e67a8a3cd8bcfd0a5b55358ecbb4f8450d9f02f

boot: Call flush() before booting

In a lot of cases kernel resets UART HW. To ensure that U-Boot messages
printed before booting the kernel are not lost, call new U-Boot console
flush() function.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

cmd/elf.c

diff --git a/cmd/elf.c b/cmd/elf.c
index ce40d3f..b7b9f50 100644
--- a/cmd/elf.c
+++ b/cmd/elf.c
@@ -72,6 +72,7 @@
 		return rcode;
 
 	printf("## Starting application at 0x%08lx ...\n", addr);
+	flush();
 
 	/*
 	 * pass address parameter as argv[0] (aka command name),
@@ -274,6 +275,7 @@
 		puts("## Not an ELF image, assuming binary\n");
 
 	printf("## Starting vxWorks at 0x%08lx ...\n", addr);
+	flush();
 
 	dcache_disable();
 #if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)