google/gru: Add a stub rk3399 mainboard

Most things still need to be filled in, but this will allow
us to build boards which use this SOC.

[pg: separated out from the combined commit that added both SoC and
board. Added board_info.txt that will be added downstream, too.]

Change-Id: I7facce7b98a5d19fb77746b1aee67fff74da8150
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 27dfc39efe95025be2271e2e00e9df93b7907840
Original-Change-Id: I6f2407ff578dcd3d0daed86dd03d8f5f4edcac53
Original-Signed-off-by: huang lin <hl@rock-chips.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/332385
Reviewed-on: https://review.coreboot.org/14279
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/mainboard/google/gru/Kconfig b/src/mainboard/google/gru/Kconfig
new file mode 100644
index 0000000..c225d10
--- /dev/null
+++ b/src/mainboard/google/gru/Kconfig
@@ -0,0 +1,67 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright 2016 Rockchip Inc.
+##
+## 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.
+##
+
+config BOARD_GOOGLE_GRU  # Umbrella option to be selected by variant boards.
+	def_bool n
+
+if BOARD_GOOGLE_GRU
+
+config BOARD_SPECIFIC_OPTIONS
+	def_bool y
+	select BOARD_ID_AUTO
+	select BOARD_ROMSIZE_KB_8192
+	select COMMON_CBFS_SPI_WRAPPER
+	select HAVE_HARD_RESET
+	select MAINBOARD_HAS_CHROMEOS
+	select SOC_ROCKCHIP_RK3399
+	select SPI_FLASH
+	select SPI_FLASH_GIGADEVICE
+	select SPI_FLASH_WINBOND
+
+config CHROMEOS
+	select CHROMEOS_VBNV_FLASH
+	select VBOOT2_MOCK_SECDATA
+	select VIRTUAL_DEV_SWITCH
+
+config MAINBOARD_DIR
+	string
+	default google/gru
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "Gru"
+
+config MAINBOARD_VENDOR
+	string
+	default "Google"
+
+config DRAM_SIZE_MB
+	int
+	default 2048
+
+config EC_GOOGLE_CHROMEEC_SPI_BUS
+	hex
+	default 0
+
+config BOOT_MEDIA_SPI_BUS
+	int
+	default 1
+
+config CONSOLE_SERIAL_UART_ADDRESS
+	hex
+	depends on DRIVERS_UART
+	default 0xFF1A0000
+
+endif # BOARD_GOOGLE_GRU