1 files changed, 90 insertions, 0 deletions
diff --git a/common/boards/qemu-virt/board.c b/common/boards/qemu-virt/board.c
new file mode 100644
index 0000000000..4f2f7374c5
--- /dev/null
+++ b/common/boards/qemu-virt/board.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Pengutronix e.K.
+ *
+ */
+#include <common.h>
+#include <init.h>
+#include <of.h>
+#include <deep-probe.h>
+#include "qemu-virt-flash.h"
+
+#ifdef CONFIG_64BIT
+#define MACHINE "virt64"
+#else
+#define MACHINE "virt"
+#endif
+
+#ifdef CONFIG_ARM
+#include <asm/system_info.h>
+
+static inline void arm_virt_init(void)
+{
+	const char *hostname = MACHINE;
+
+	if (cpu_is_cortex_a7())
+		hostname = "virt-a7";
+	else if (cpu_is_cortex_a15())
+		hostname = "virt-a15";
+
+	barebox_set_model("ARM QEMU " MACHINE);
+	barebox_set_hostname(hostname);
+}
+
+#else
+static inline void arm_virt_init(void) {}
+#endif
+
+extern char __dtbo_qemu_virt_flash_start[];
+extern char __dtb_fitimage_pubkey_start[];
+
+static const struct of_device_id virt_of_match[] = {
+	{ .compatible = "linux,dummy-virt", .data = arm_virt_init },
+	{ .compatible = "riscv-virtio" },
+	{ /* Sentinel */},
+};
+BAREBOX_DEEP_PROBE_ENABLE(virt_of_match);
+
+/*
+ * We don't have a dedicated qemu-virt device tree and instead rely
+ * on what Qemu passes us. To be able to get fundamental changes
+ * in very early, we forego having a board driver here and do this
+ * directly in the initcall.
+ */
+static int virt_board_driver_init(void)
+{
+	struct device_node *root = of_get_root_node();
+	struct device_node *flash, *overlay, *pubkey;
+	const struct of_device_id *id;
+	void (*init)(void);
+
+	id = of_match_node(virt_of_match, root);
+	if (!id)
+		return 0;
+
+	if (id->data) {
+		init = id->data;
+		init();
+	}
+
+	/*
+	 * Catch both old Qemu versions that place /flash in /soc and
+	 * configurations, where the first flash bank is secure-world only
+	 */
+	flash = of_find_node_by_path(PARTS_TARGET_PATH_STR);
+	if (flash && of_device_is_available(flash)) {
+		overlay = of_unflatten_dtb(__dtbo_qemu_virt_flash_start, INT_MAX);
+		of_overlay_apply_tree(root, overlay);
+	}
+
+	pubkey = of_unflatten_dtb(__dtb_fitimage_pubkey_start, INT_MAX);
+	of_merge_nodes(root, pubkey);
+
+	/* fragment may have added aliases to the DT */
+	of_alias_scan();
+
+	/* of_probe() will happen later at of_populate_initcall */
+
+	return 0;
+}
+postcore_initcall(virt_board_driver_init);