x86: Add DFI BT700 BayTrail board support

This patch adds support for the DFI BayTrail BT700 QSeven SoM installed
on the DFI Q7X-151 baseboard. The baseboard is equipped with the Nuvoton
NCT6102D Super IO chip providing the UART as console.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/board/dfi/dfi-bt700/dfi-bt700.c b/board/dfi/dfi-bt700/dfi-bt700.c
new file mode 100644
index 0000000..8645bdc
--- /dev/null
+++ b/board/dfi/dfi-bt700/dfi-bt700.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <nuvoton_nct6102d.h>
+#include <asm/gpio.h>
+#include <asm/ibmpc.h>
+#include <asm/pnp_def.h>
+
+int board_early_init_f(void)
+{
+#ifdef CONFIG_INTERNAL_UART
+	/* Disable the legacy UART which is enabled per default */
+	nct6102d_uarta_disable();
+#else
+	/*
+	 * The FSP enables the BayTrail internal legacy UART (again).
+	 * Disable it again, so that the Nuvoton one can be used.
+	 */
+	setup_internal_uart(0);
+#endif
+
+	/* Disable the watchdog which is enabled per default */
+	nct6102d_wdt_disable();
+
+	return 0;
+}