mb/sifive: Add HiFive Unleashed mainboard

Change-Id: I52ef2da9148809923c90178a00ba94babba8d2f8
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/25790
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/mainboard/sifive/Kconfig

@@ -0,0 +1,16 @@
+if VENDOR_SIFIVE
+
+choice
+	prompt "Mainboard model"
+
+source "src/mainboard/sifive/*/Kconfig.name"
+
+endchoice
+
+source "src/mainboard/sifive/*/Kconfig"
+
+config MAINBOARD_VENDOR
+	string
+	default "SiFive"
+
+endif # VENDOR_SIFIVE

src/mainboard/sifive/Kconfig.name

@@ -0,0 +1,2 @@
+config VENDOR_SIFIVE
+	bool "SiFive"

src/mainboard/sifive/hifive-unleashed/Kconfig

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+# This file is part of the coreboot project.
+#
+# Copyright (C) 2018 Jonathan Neuschäfer
+#
+# 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.
+
+if BOARD_SIFIVE_HIFIVE_UNLEASHED
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select SOC_SIFIVE_FU540
+	select BOARD_ROMSIZE_KB_32768
+
+config MAINBOARD_DIR
+	string
+	default sifive/hifive-unleashed
+
+config MAX_CPUS
+	int
+	default 4
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "HiFive Unleashed"
+
+endif

src/mainboard/sifive/hifive-unleashed/Kconfig.name

@@ -0,0 +1,2 @@
+config BOARD_SIFIVE_HIFIVE_UNLEASHED
+	bool "HiFive Unleashed"

src/mainboard/sifive/hifive-unleashed/Makefile.inc

@@ -0,0 +1,18 @@
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2018 Jonathan Neuschäfer
+#
+# 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.
+
+romstage-y += romstage.c
+
+bootblock-y += memlayout.ld
+romstage-y += memlayout.ld
+ramstage-y += memlayout.ld

src/mainboard/sifive/hifive-unleashed/board_info.txt

@@ -0,0 +1,6 @@
+Category: eval
+ROM package: SOIC-16
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: n
+Board URL: https://www.crowdsupply.com/sifive/hifive-unleashed

src/mainboard/sifive/hifive-unleashed/devicetree.cb

@@ -0,0 +1,16 @@
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2018 Jonathan Neuschäfer
+#
+# 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.
+
+chip soc/sifive/fu540
+	device cpu_cluster 0 on  end
+end

src/mainboard/sifive/hifive-unleashed/mainboard.c

@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 Jonathan Neuschäfer
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <device/device.h>
+#include <bootblock_common.h>
+#include <timestamp.h>
+
+static void mainboard_enable(device_t dev)
+{
+}
+
+struct chip_operations mainboard_ops = {
+	.name = CONFIG_MAINBOARD_PART_NUMBER,
+	.enable_dev = mainboard_enable,
+};

src/mainboard/sifive/hifive-unleashed/memlayout.ld

@@ -0,0 +1,16 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 Jonathan Neuschäfer
+ *
+ * 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.
+ */
+
+#include <soc/memlayout.ld>

src/mainboard/sifive/hifive-unleashed/romstage.c

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#include <console/console.h>
+#include <program_loading.h>
+
+void main(void)
+{
+	console_init();
+
+	/* TODO: Follow Section 6.3 (FSBL) of the FU540 manual */
+
+	run_ramstage();
+}