diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-22 15:30:52 +0400 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-15 21:45:55 +0400 |
| commit | 999159a5381bff3bd6f688c5d20fbec9d8789e53 (patch) | |
| tree | d54af343e2fa905b3d97d9dd87d763a43b256067 /arch/arc/boot | |
| parent | ee36d1722112f33725ec1a7fc02f6c46e630fd27 (diff) | |
| download | linux-999159a5381bff3bd6f688c5d20fbec9d8789e53.tar.xz | |
ARC: [DeviceTree] Basic support
This is minimal infrastructure needed for devicetree work.
It uses an a sample "skeleton" devicetree - embedded in kernel image -
to print the board, manufacturer by parsing the top-level "compatible"
string.
As of now we don't need any additional "board" specific "machine_desc".
TODO: support interpreting the command line as boot-loader passed dtb
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/arc/boot')
| -rw-r--r-- | arch/arc/boot/dts/Makefile | 13 | ||||
| -rw-r--r-- | arch/arc/boot/dts/skeleton.dts | 10 | ||||
| -rw-r--r-- | arch/arc/boot/dts/skeleton.dtsi | 21 |
3 files changed, 44 insertions, 0 deletions
diff --git a/arch/arc/boot/dts/Makefile b/arch/arc/boot/dts/Makefile new file mode 100644 index 000000000000..17dc7b8b05fa --- /dev/null +++ b/arch/arc/boot/dts/Makefile @@ -0,0 +1,13 @@ +# Built-in dtb +builtindtb-y := skeleton + +ifneq ($(CONFIG_ARC_BUILTIN_DTB_NAME),"") + builtindtb-y := $(patsubst "%",%,$(CONFIG_ARC_BUILTIN_DTB_NAME)) +endif + +obj-y += $(builtindtb-y).dtb.o +targets += $(builtindtb-y).dtb + +dtbs: $(addprefix $(obj)/, $(builtindtb-y).dtb) + +clean-files := *.dtb diff --git a/arch/arc/boot/dts/skeleton.dts b/arch/arc/boot/dts/skeleton.dts new file mode 100644 index 000000000000..25a84fb5b3dc --- /dev/null +++ b/arch/arc/boot/dts/skeleton.dts @@ -0,0 +1,10 @@ +/* + * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) + * + * 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. + */ +/dts-v1/; + +/include/ "skeleton.dtsi" diff --git a/arch/arc/boot/dts/skeleton.dtsi b/arch/arc/boot/dts/skeleton.dtsi new file mode 100644 index 000000000000..9b357d802a10 --- /dev/null +++ b/arch/arc/boot/dts/skeleton.dtsi @@ -0,0 +1,21 @@ +/* + * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) + * + * 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. + */ + +/* + * Skeleton device tree; the bare minimum needed to boot; just include and + * add a compatible value. + */ + +/ { + compatible = "snps,arc"; + #address-cells = <1>; + #size-cells = <1>; + chosen { }; + aliases { }; + memory { device_type = "memory"; reg = <0 0>; }; +}; |