From 0dba45864b2afc7236102b9abb6b405b49efcccb Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 3 Nov 2021 07:16:06 -0600 Subject: [PATCH] arm: Init the debug UART At present we don't init the debug UART in the generic ARM code, but instead leave it to individual machines to handle. This is not the way it is supposed to work. Add the required init to the crt files. This ensures that the UART is available as early as possible and that the announcement appears when it should, if enabled. Signed-off-by: Simon Glass --- arch/arm/lib/crt0.S | 4 ++++ arch/arm/lib/crt0_64.S | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S index 956d258c9d..ba312901f3 100644 --- a/arch/arm/lib/crt0.S +++ b/arch/arm/lib/crt0.S @@ -109,6 +109,10 @@ ENTRY(_main) mov r9, r0 bl board_init_f_init_reserve +#if defined(CONFIG_DEBUG_UART) && CONFIG_IS_ENABLED(SERIAL) + bl debug_uart_init +#endif + #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_EARLY_BSS) CLEAR_BSS #endif diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index 680e674fa3..611affb74c 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -91,6 +91,10 @@ ENTRY(_main) mov x18, x0 bl board_init_f_init_reserve +#if defined(CONFIG_DEBUG_UART) && CONFIG_IS_ENABLED(SERIAL) + bl debug_uart_init +#endif + mov x0, #0 bl board_init_f