From efc3f9526f9cfcd8614668c03b9c66b209782c41 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Mon, 5 Sep 2022 11:31:21 +0200 Subject: [PATCH] boot: Call flush() before booting MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Simon Glass --- boot/bootm_os.c | 1 + cmd/boot.c | 1 + cmd/elf.c | 2 ++ 3 files changed, 4 insertions(+) diff --git a/boot/bootm_os.c b/boot/bootm_os.c index f31820c..079224c 100644 --- a/boot/bootm_os.c +++ b/boot/bootm_os.c @@ -303,6 +303,7 @@ static void do_bootvx_fdt(bootm_headers_t *images) #else printf("## Starting vxWorks at 0x%08lx\n", (ulong)images->ep); #endif + flush(); boot_jump_vxworks(images); diff --git a/cmd/boot.c b/cmd/boot.c index be67a59..14839c1 100644 --- a/cmd/boot.c +++ b/cmd/boot.c @@ -32,6 +32,7 @@ static int do_go(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) addr = hextoul(argv[1], NULL); printf ("## Starting application at 0x%08lX ...\n", addr); + flush(); /* * pass address parameter as argv[0] (aka command name), 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 @@ int do_bootelf(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) return rcode; printf("## Starting application at 0x%08lx ...\n", addr); + flush(); /* * pass address parameter as argv[0] (aka command name), @@ -274,6 +275,7 @@ int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) 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) -- 2.7.4