mainboard/google: Add Braswell based Cyan board

Add initial files for the cyan board.
Matches chromium tree at 927026db

This board uses the Braswell FSP 1.1 image and does not build
without the FspUpdVpd.h file.

BRANCH=none
BUG=None
Test=Build and run on cyan

Change-Id: I935839be033c25e197e78fbee306104b4162a99a
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10182
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/mainboard/google/cyan/com_init.c b/src/mainboard/google/cyan/com_init.c
new file mode 100644
index 0000000000..bce0666fba
--- /dev/null
+++ b/src/mainboard/google/cyan/com_init.c
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2015 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <arch/io.h>
+#include <soc/gpio.h>
+#include <soc/lpc.h>
+#include <soc/pci_devs.h>
+#include <soc/romstage.h>
+
+void mainboard_pre_console_init(struct romstage_params *params)
+{
+	uint32_t reg;
+	uint32_t *pad_config_reg;
+
+	/* Enable the UART hardware for COM1. */
+	reg = 1;
+	pci_write_config32(PCI_DEV(0, LPC_DEV, 0), UART_CONT, reg);
+
+	/*
+	 * Set up the pads to select the UART function
+	 * AD12 SW16(UART1_DATAIN/UART0_DATAIN)   - Set Mode 2 for UART0_RXD
+	 * AD10 SW20(UART1_DATAOUT/UART0_DATAOUT) - Set Mode 2 for UART0_TXD
+	 */
+	pad_config_reg = gpio_pad_config_reg(GP_SOUTHWEST, UART1_RXD_PAD);
+	write32(pad_config_reg, SET_PAD_MODE_SELECTION(PAD_CONFIG0_DEFAULT0,
+		M2));
+
+	pad_config_reg = gpio_pad_config_reg(GP_SOUTHWEST, UART1_TXD_PAD);
+	write32(pad_config_reg, SET_PAD_MODE_SELECTION(PAD_CONFIG0_DEFAULT0,
+		M2));
+}