[U-Boot] [PATCH v1 01/18] MIPS: Prepare device-tree support.

[Purna Chandra Mandal <purna.mandal@microchip.com>]

On 12/17/2015 11:17 PM, Marek Vasut wrote:
> On Thursday, December 17, 2015 at 06:28:08 PM, Purna Chandra Mandal wrote:
>> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
>> ---
>>
>>  arch/Kconfig                      |  1 +
>>  arch/mips/config.mk               |  3 +++
>>  arch/mips/dts/.gitignore          |  1 +
>>  arch/mips/dts/Makefile            | 16 ++++++++++++++++
>>  arch/mips/dts/include/dt-bindings |  1 +
>>  arch/mips/dts/skeleton.dtsi       | 21 +++++++++++++++++++++
>>  dts/Makefile                      |  2 +-
>>  7 files changed, 44 insertions(+), 1 deletion(-)
>>  create mode 100644 arch/mips/dts/.gitignore
>>  create mode 100644 arch/mips/dts/Makefile
>>  create mode 120000 arch/mips/dts/include/dt-bindings
>>  create mode 100644 arch/mips/dts/skeleton.dtsi
>>
>> diff --git a/arch/Kconfig b/arch/Kconfig
>> index 6489cc9..589fc47 100644
>> --- a/arch/Kconfig
>> +++ b/arch/Kconfig
>> @@ -54,6 +54,7 @@ config MIPS
>>      select HAVE_PRIVATE_LIBGCC
>>      select HAVE_GENERIC_BOARD
>>      select SYS_GENERIC_BOARD
>> +    select SUPPORT_OF_CONTROL
>>
>>  config NDS32
>>      bool "NDS32 architecture"
>> diff --git a/arch/mips/config.mk b/arch/mips/config.mk
>> index 52e28f2..d4d688e 100644
>> --- a/arch/mips/config.mk
>> +++ b/arch/mips/config.mk
>> @@ -70,3 +70,6 @@ PLATFORM_RELFLAGS        += -ffunction-sections
>> -fdata-sections LDFLAGS_FINAL            += --gc-sections -pie
>>  OBJCOPYFLAGS            += -j .text -j .rodata -j .data -j .got
>>  OBJCOPYFLAGS            += -j .u_boot_list -j .rel.dyn -j .padding
>> +ifdef CONFIG_OF_EMBED
>> +OBJCOPYFLAGS            += -j .dtb.init.rodata
>> +endif
>> diff --git a/arch/mips/dts/.gitignore b/arch/mips/dts/.gitignore
>> new file mode 100644
>> index 0000000..b60ed20
>> --- /dev/null
>> +++ b/arch/mips/dts/.gitignore
>> @@ -0,0 +1 @@
>> +*.dtb
>> diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile
>> new file mode 100644
>> index 0000000..724b5d2
>> --- /dev/null
>> +++ b/arch/mips/dts/Makefile
>> @@ -0,0 +1,16 @@
>> +#
>> +# SPDX-License-Identifier:    GPL-2.0+
>> +#
>> +
>> +#dtb-$(CONFIG_XXX) += xxx.dtb
> XXX ?

ack. will remove.

>> +targets += $(dtb-y)
>> +
>> +# Add any required device tree compiler flags here
>> +DTC_FLAGS +=
>> +
>> +PHONY += dtbs
>> +dtbs: $(addprefix $(obj)/, $(dtb-y))
>> +    @:
>> +
>> +clean-files := *.dtb
>> diff --git a/arch/mips/dts/include/dt-bindings
>> b/arch/mips/dts/include/dt-bindings new file mode 120000
>> index 0000000..0cecb3d
>> --- /dev/null
>> +++ b/arch/mips/dts/include/dt-bindings
>> @@ -0,0 +1 @@
>> +../../../../include/dt-bindings
>> \ No newline at end of file
>> diff --git a/arch/mips/dts/skeleton.dtsi b/arch/mips/dts/skeleton.dtsi
>> new file mode 100644
>> index 0000000..ad41546
>> --- /dev/null
>> +++ b/arch/mips/dts/skeleton.dtsi
>> @@ -0,0 +1,21 @@
>> +/*
>> + * Skeleton device tree; the bare minimum needed to boot; just include and
>> + * add a compatible value.  The bootloader will typically populate the
>> memory + * node.
>> + */
>> +
>> +/ {
>> +    #address-cells = <1>;
>> +    #size-cells = <1>;
>> +
>> +    chosen {
>> +    };
>> +
>> +    aliases {
>> +    };
>> +
>> +    memory {
>> +        device_type = "memory";
>> +        reg = <0 0>;
>> +    };
> You don't need any of these nodes, do you ?

ack. This is skeleton code copied from arm, might be needed by others. will remove as not needed by me.

>> +};
>> diff --git a/dts/Makefile b/dts/Makefile
>> index d3122aa..5c3a01f 100644
>> --- a/dts/Makefile
>> +++ b/dts/Makefile
>> @@ -45,4 +45,4 @@ dtbs: $(obj)/dt.dtb
>>  clean-files := dt.dtb.S
>>
>>  # Let clean descend into dts directories
>> -subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/sandbox/dts
>> ../arch/x86/dts +subdir- += ../arch/arm/dts ../arch/microblaze/dts
>> ../arch/sandbox/dts ../arch/x86/dts ../arch/mips/dts