Prepare sub-folder for device-tree files. Make support for device-tree on MIPS available in Kbuild/Kconfig.
Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com Signed-off-by: Purna Chandra Mandal purna.mandal@microchip.com --- Changes in v3: - keep section .dtb.init.rodata during link in case of CONFIG_OF_EMBED, .dtb only does not work
Changes in v2: - add arch/mips/dts to clean list in dts/Makefile - keep section .dtb during link in case of CONFIG_OF_EMBED
arch/Kconfig | 1 + arch/mips/config.mk | 1 + arch/mips/dts/.gitignore | 1 + arch/mips/dts/Makefile | 16 ++++++++++++++++ arch/mips/dts/skeleton.dtsi | 23 +++++++++++++++++++++++ dts/Makefile | 2 +- 6 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 arch/mips/dts/.gitignore create mode 100644 arch/mips/dts/Makefile create mode 100644 arch/mips/dts/skeleton.dtsi
diff --git a/arch/Kconfig b/arch/Kconfig index 1709d40..ec12013 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -55,6 +55,7 @@ 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 415ec8a..b78d495 100644 --- a/arch/mips/config.mk +++ b/arch/mips/config.mk @@ -72,6 +72,7 @@ PF_ABICALLS := -mabicalls PF_PIC := -fpic PF_PIE := -pie PF_OBJCOPY := -j .got -j .u_boot_list -j .rel.dyn -j .padding +PF_OBJCOPY += -j .dtb.init.rodata endif
PLATFORM_CPPFLAGS += -G 0 $(PF_ABICALLS) $(PF_PIC) 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..47b6eb5 --- /dev/null +++ b/arch/mips/dts/Makefile @@ -0,0 +1,16 @@ +# +# SPDX-License-Identifier: GPL-2.0+ +# + +dtb-y += + +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/skeleton.dtsi b/arch/mips/dts/skeleton.dtsi new file mode 100644 index 0000000..24ee6c3 --- /dev/null +++ b/arch/mips/dts/skeleton.dtsi @@ -0,0 +1,23 @@ +/* + * Skeleton device tree; the bare minimum needed to boot; just include and + * add a compatible value. The bootloader will typically populate the memory + * node. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/ { + #address-cells = <1>; + #size-cells = <1>; + + chosen { + }; + + aliases { + }; + + memory { + device_type = "memory"; + reg = <0 0>; + }; +}; diff --git a/dts/Makefile b/dts/Makefile index d3122aa..c4ac153 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/mips/dts ../arch/sandbox/dts ../arch/x86/dts