imgvp-danube: Support for the ImgTec Danube Virtual Platform

Add basic board support for the ImgTec Danube Virtual Platform, which
emulates a system built around the Danube SoC.

Run this by loading coreboot.bimg into a flash device connected to SPFI1
chip select 0 & then executing the Danube boot ROM.

BUG=chrome-os-partner:31438
TEST=none yet

Change-Id: Ia62af62804bab261f3cabf7c2e62f5bb08a4a1a4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 6cb1017f5e2fec85f7f5c60cd2cfec63cc886b49
Original-Change-Id: I7a2b52f304bcb4b614440ec38975e05f38b0e590
Original-Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/207976
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8766
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/emulation/Kconfig

@@ -15,6 +15,9 @@ config BOARD_EMULATION_QEMU_ARMV7
 config BOARD_EMULATION_QEMU_UCB_RISCV
 	bool "QEMU ucb riscv"
 
+config BOARD_EMULATION_IMGVP_DANUBE
+	bool "ImgTec Danube Virtual Platform"
+
 endchoice
 
 config BOARD_EMULATION_QEMU_X86
@@ -26,6 +29,7 @@ source "src/mainboard/emulation/qemu-i440fx/Kconfig"
 source "src/mainboard/emulation/qemu-q35/Kconfig"
 source "src/mainboard/emulation/qemu-armv7/Kconfig"
 source "src/mainboard/emulation/qemu-riscv/Kconfig"
+source "src/mainboard/emulation/imgvp-danube/Kconfig"
 
 config MAINBOARD_VENDOR
 	string

src/mainboard/emulation/imgvp-danube/Kconfig

@@ -0,0 +1,53 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2014 Imagination Technologies
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+if BOARD_EMULATION_IMGVP_DANUBE
+
+config BOARD_SPECIFIC_OPTIONS
+	def_bool y
+	select BOOTBLOCK_CONSOLE
+	select CPU_IMGTEC_DANUBE
+
+config MAINBOARD_DIR
+	string
+	default emulation/imgvp-danube
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "ImgTec Danube Virtual Platform"
+
+config BOOTBLOCK_MAINBOARD_INIT
+	string
+	default "mainboard/emulation/imgvp-danube/bootblock.c"
+
+config SYS_SDRAM_BASE
+	hex "SDRAM base address"
+	default 0x80000000
+
+config DRAM_SIZE_MB
+	int
+	default 256
+
+config HEAP_SIZE
+	hex
+	default 0x08000000
+
+endif

src/mainboard/emulation/imgvp-danube/Makefile.inc

@@ -0,0 +1,22 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright 2014 Imagination Technologies Ltd.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+romstage-y += romstage.c

src/mainboard/emulation/imgvp-danube/bootblock.c

@@ -0,0 +1,24 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+void bootblock_mainboard_init(void)
+{
+}

src/mainboard/emulation/imgvp-danube/devicetree.cb

@@ -0,0 +1,26 @@
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2014 Imagination Technologies
+#
+# 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., 51 Franklin St, Fifth Floor, Boston,
+# MA 02110-1301 USA
+#
+
+chip soc/imgtec/danube
+	chip drivers/generic/generic # I2C0 controller
+		device i2c 6 on end # Fake component for testing
+	end
+end

src/mainboard/emulation/imgvp-danube/mainboard.c

@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+
+static void mainboard_enable(device_t dev)
+{
+	printk(BIOS_INFO, "Enable imgvp-danube device...\n");
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+};
+

src/mainboard/emulation/imgvp-danube/romstage.c

@@ -0,0 +1,38 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Imagination Technologies
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <arch/hlt.h>
+#include <arch/stages.h>
+#include <cbfs.h>
+#include <console/console.h>
+
+void main(void)
+{
+	void *entry;
+
+	console_init();
+
+	entry = cbfs_load_stage(CBFS_DEFAULT_MEDIA, "fallback/ramstage");
+	if (entry != (void *)-1)
+		stage_exit(entry);
+
+	hlt();
+}