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authorMarc Kleine-Budde <mkl@pengutronix.de>2015-03-03 13:14:47 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2015-03-06 07:42:21 +0100
commit09d343e941e039afa19b5ead777780e1f799cab4 (patch)
tree4a00a0f22d4165a74f2f5bd21dd53c2f03633ea2 /arch/sandbox/board
parent1b756f522686d3f469f1ff3363ce158d3d45f204 (diff)
downloadbarebox-09d343e941e039afa19b5ead777780e1f799cab4.tar.gz
barebox-09d343e941e039afa19b5ead777780e1f799cab4.tar.xz
sandbox: add support to pass dtb to barebox
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/sandbox/board')
-rw-r--r--arch/sandbox/board/Makefile1
-rw-r--r--arch/sandbox/board/dtb.c67
2 files changed, 68 insertions, 0 deletions
diff --git a/arch/sandbox/board/Makefile b/arch/sandbox/board/Makefile
index 5104f5cb26..460116332d 100644
--- a/arch/sandbox/board/Makefile
+++ b/arch/sandbox/board/Makefile
@@ -3,5 +3,6 @@ obj-y += clock.o
obj-y += hostfile.o
obj-y += console.o
obj-y += devices.o
+obj-y += dtb.o
extra-y += barebox.lds
diff --git a/arch/sandbox/board/dtb.c b/arch/sandbox/board/dtb.c
new file mode 100644
index 0000000000..af4a64a9c7
--- /dev/null
+++ b/arch/sandbox/board/dtb.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2013 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ * Copyright (c) 2015 Marc Kleine-Budde <mkl@pengutronix.de>, Pengutronix
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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 <common.h>
+#include <init.h>
+#include <of.h>
+
+#include <mach/linux.h>
+#include <linux/err.h>
+
+static const void *dtb;
+
+int barebox_register_dtb(const void *new_dtb)
+{
+ if (dtb)
+ return -EBUSY;
+
+ dtb = new_dtb;
+
+ return 0;
+}
+
+static int of_sandbox_init(void)
+{
+ struct device_node *root;
+ int ret;
+
+ if (dtb) {
+ root = of_unflatten_dtb(dtb);
+ } else {
+ root = of_new_node(NULL, NULL);
+
+ ret = of_property_write_u32(root, "#address-cells", 2);
+ if (ret)
+ return ret;
+
+ ret = of_property_write_u32(root, "#size-cells", 1);
+ if (ret)
+ return ret;
+ }
+
+ if (IS_ERR(root))
+ return PTR_ERR(root);
+
+ of_set_root_node(root);
+ of_fix_tree(root);
+ if (IS_ENABLED(CONFIG_OFDEVICE))
+ of_probe();
+
+ return 0;
+}
+core_initcall(of_sandbox_init);