stm32mp1: Allow to activate CONFIG_DEBUG_UART
Add the needed information to enable the debug uart
to have printf before the serial driver probe
(so before probe for clock, pincontrol and reset drivers)
To enable the debug on uart 4 (default console):
+ CONFIG_DEBUG_UART=y
+ CONFIG_DEBUG_UART_STM32=y
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index dfcbbd2..2deee09 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -4,6 +4,7 @@
*/
#include <common.h>
#include <clk.h>
+#include <debug_uart.h>
#include <asm/io.h>
#include <asm/arch/stm32.h>
#include <asm/arch/sys_proto.h>
@@ -152,6 +153,8 @@
*/
int arch_cpu_init(void)
{
+ u32 boot_mode;
+
/* early armv7 timer init: needed for polling */
timer_init();
@@ -160,8 +163,17 @@
security_init();
#endif
+
/* get bootmode from BootRom context: saved in TAMP register */
- get_bootmode();
+ boot_mode = get_bootmode();
+
+ if ((boot_mode & TAMP_BOOT_DEVICE_MASK) == BOOT_SERIAL_UART)
+ gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
+#if defined(CONFIG_DEBUG_UART) && \
+ (!defined(CONFIG_SPL) || defined(CONFIG_SPL_BUILD))
+ else
+ debug_uart_init();
+#endif
return 0;
}