Signed-off-by: Antony Pavlov <antonynpav...@gmail.com>
Cc: Franck Jullien <franck.jull...@gmail.com>
---
arch/openrisc/Kconfig | 9 +++++++++
arch/openrisc/Makefile | 7 +++++++
arch/openrisc/cpu/barebox.lds.S | 2 ++
arch/openrisc/dts/Makefile | 5 +++++
arch/openrisc/lib/Makefile | 1 +
arch/openrisc/lib/dtb.c | 44 +++++++++++++++++++++++++++++++++++++++++
drivers/of/Kconfig | 2 +-
7 files changed, 69 insertions(+), 1 deletion(-)
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 23c6a71..483ae6d 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -1,5 +1,6 @@
config OPENRISC
bool
+ select OFTREE
select HAS_CACHE
select HAVE_CONFIGURABLE_MEMORY_LAYOUT
select HAVE_DEFAULT_ENVIRONMENT_NEW
@@ -11,6 +12,14 @@ config ARCH_TEXT_BASE
hex
default 0x00000000
+config BUILTIN_DTB
+ bool "link a DTB into the barebox image"
+ depends on OFTREE
+
+config BUILTIN_DTB_NAME
+ string "DTB to build into the barebox image"
+ depends on BUILTIN_DTB
+
choice
prompt "Select your board"
diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
index fd8bbbf..b0c8566 100644
--- a/arch/openrisc/Makefile
+++ b/arch/openrisc/Makefile
@@ -19,3 +19,10 @@ common-y += arch/openrisc/lib/
common-y += arch/openrisc/cpu/
lds-y += arch/openrisc/cpu/barebox.lds
+
+common-$(CONFIG_BUILTIN_DTB) += arch/openrisc/dts/
+
+dts := arch/openrisc/dts
+
+%.dtb: scripts
+ $(Q)$(MAKE) $(build)=$(dts) $(dts)/$@
diff --git a/arch/openrisc/cpu/barebox.lds.S b/arch/openrisc/cpu/barebox.lds.S
index add9181..dbecdbf 100644
--- a/arch/openrisc/cpu/barebox.lds.S
+++ b/arch/openrisc/cpu/barebox.lds.S
@@ -69,6 +69,8 @@ SECTIONS
__usymtab : { BAREBOX_SYMS } > ram
___usymtab_end = .;
+ .dtb : { BAREBOX_DTB() } > ram
+
__etext = .; /* End of text and rodata section */
. = ALIGN(4);
diff --git a/arch/openrisc/dts/Makefile b/arch/openrisc/dts/Makefile
new file mode 100644
index 0000000..6d6c9a3
--- /dev/null
+++ b/arch/openrisc/dts/Makefile
@@ -0,0 +1,5 @@
+
+BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB_NAME))
+obj-$(CONFIG_BUILTIN_DTB) += $(BUILTIN_DTB).dtb.o
+
+clean-files := *.dtb *.dtb.S
diff --git a/arch/openrisc/lib/Makefile b/arch/openrisc/lib/Makefile
index 0b3cc50..62082fe 100644
--- a/arch/openrisc/lib/Makefile
+++ b/arch/openrisc/lib/Makefile
@@ -5,3 +5,4 @@ obj-y += muldi3.o
obj-y += lshrdi3.o
obj-y += ashldi3.o
obj-y += ashrdi3.o
+obj-$(CONFIG_BUILTIN_DTB) += dtb.o
diff --git a/arch/openrisc/lib/dtb.c b/arch/openrisc/lib/dtb.c
new file mode 100644
index 0000000..4f63a77
--- /dev/null
+++ b/arch/openrisc/lib/dtb.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpav...@gmail.com>
+ *
+ * Based on arch/arm/cpu/dtb.c:
+ * Copyright (C) 2013 Sascha Hauer <s.ha...@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>
+
+extern char __dtb_start[];
+
+static int of_openrisc_init(void)
+{
+ struct device_node *root;
+
+ root = of_get_root_node();
+ if (root)
+ return 0;
+
+ root = of_unflatten_dtb(__dtb_start);
+ if (root) {
+ pr_debug("using internal DTB\n");
+ of_set_root_node(root);
+ if (IS_ENABLED(CONFIG_OFDEVICE))
+ of_probe();
+ }
+
+ return 0;
+}
+core_initcall(of_openrisc_init);
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 8195506..97a1d93 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -4,7 +4,7 @@ config OFTREE
config OFTREE_MEM_GENERIC
depends on OFTREE
- depends on PPC || ARM || ARCH_EFI
+ depends on PPC || ARM || ARCH_EFI || OPENRISC
def_bool y
config DTC
--
2.0.1
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