[PATCH 2/4] arm: Init the debug UART

[Simon Glass]

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 <sjg at chromium.org>
---

 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 956d258c9da..ba312901f33 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 680e674fa33..611affb74ce 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
 
-- 
2.33.1.1089.g2158813163f-goog