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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 <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-11-03 07:16:06 -06:00 committed by Tom Rini
parent 31ec464d65
commit 0dba45864b
2 changed files with 8 additions and 0 deletions
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4
arch/arm/lib/crt0.S
View File

@ -109,6 +109,10 @@ ENTRY(_main)
mov r9, r0 mov r9, r0
bl board_init_f_init_reserve 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) #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_EARLY_BSS)
CLEAR_BSS CLEAR_BSS
#endif #endif

4
arch/arm/lib/crt0_64.S
View File

@ -91,6 +91,10 @@ ENTRY(_main)
mov x18, x0 mov x18, x0
bl board_init_f_init_reserve bl board_init_f_init_reserve
#if defined(CONFIG_DEBUG_UART) && CONFIG_IS_ENABLED(SERIAL)
bl debug_uart_init
#endif
mov x0, #0 mov x0, #0
bl board_init_f bl board_init_f