HI @alvaro.tx
I found a solution. This code will set a U-Boot variable and save the reset cause in hexadecimal number.
diff --git a/board/toradex/common/tdx-common.c b/board/toradex/common/tdx-common.c
index b48d0df605..98e045cfb6 100644
--- a/board/toradex/common/tdx-common.c
+++ b/board/toradex/common/tdx-common.c
@@ -10,6 +10,7 @@
#include "tdx-cfg-block.h"
#include "tdx-common.h"
+#include <asm/arch-imx/cpu.h>
#ifdef CONFIG_TDX_CFG_BLOCK
static char tdx_serial_str[9];
@@ -87,6 +88,8 @@ int show_board_info(void)
tdx_serial_str);
}
+ setenv_hex("reset_cause", get_imx_reset_cause());
+
/*
* Check if environment contains a valid MAC address,
* set the one from config block if not
To decode the hexadecimal number, you need to look in arch/arm/imx-common/cpu.c.
Best regards,
Jaski