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armv8: fsl-layerscape: spl: add debug UART support

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To use the debug UART we have to call debug_uart_init() in the SPL. Do
so as soon as possible.

As an example, here is how you can use it on a LS1028A SoC:
CONFIG_DEBUG_UART=y
CONFIG_DEBUG_UART_BASE=0x21c0500
CONFIG_DEBUG_UART_CLOCK=200000000

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
This commit is contained in:
Michael Walle 2021-03-26 19:40:55 +01:00 committed by Priyanka Jain
parent 8ff123a685
commit 019438e4fd
1 changed files with 3 additions and 0 deletions
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3
arch/arm/cpu/armv8/fsl-layerscape/spl.c
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@ -6,6 +6,7 @@
#include <common.h>
#include <clock_legacy.h>
#include <cpu_func.h>
#include <debug_uart.h>
#include <env.h>
#include <image.h>
#include <init.h>
@ -70,6 +71,8 @@ void board_init_f(ulong dummy)
icache_enable();
/* Clear global data */
memset((void *)gd, 0, sizeof(gd_t));
if (IS_ENABLED(CONFIG_DEBUG_UART))
debug_uart_init();
board_early_init_f();
timer_init();
#ifdef CONFIG_ARCH_LS2080A