[U-Boot] [PATCH 1/2] ARM: exynos: Fix build error if SERIAL is disabled in SPL

[Marek Vasut]

If CONFIG_SPL_SERIAL_SUPPORT is not defined in include/configs/exynos5-common.h
the following error is produced during the build of the SPL:

arch/arm/mach-exynos/built-in.o: In function `do_lowlevel_init':
...u-boot/arch/arm/mach-exynos/lowlevel_init.c:221: undefined reference to `debug_uart_init'

Add additional condition to check if SPL build is in progress and
in that case check if CONFIG_SPL_SERIAL_SUPPORT is also set before
enabling the debug UART.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Simon Glass <sjg at chromium.org>
Cc: Tom Rini <trini at konsulko.com>
---
 arch/arm/mach-exynos/lowlevel_init.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/mach-exynos/lowlevel_init.c b/arch/arm/mach-exynos/lowlevel_init.c
index 6c39cb2..1e090fd 100644
--- a/arch/arm/mach-exynos/lowlevel_init.c
+++ b/arch/arm/mach-exynos/lowlevel_init.c
@@ -216,9 +216,12 @@ int do_lowlevel_init(void)
 	if (actions & DO_CLOCKS) {
 		system_clock_init();
 #ifdef CONFIG_DEBUG_UART
+#if (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_SERIAL_SUPPORT)) || \
+    !defined(CONFIG_SPL_BUILD)
 		exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
 		debug_uart_init();
 #endif
+#endif
 		mem_ctrl_init(actions & DO_MEM_RESET);
 		tzpc_init();
 	}
-- 
2.7.0