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    SubjectRe: [PATCH 3/5] x86/of: Add building device tree blob(s) into image.
    On 11/16/2010 10:02 PM, Grant Likely wrote:
    > On Tue, Nov 16, 2010 at 02:41:38PM -0800, dirk.brandewie@gmail.com wrote:
    >> From: Dirk Brandewie<dirk.brandewie@gmail.com>
    >>
    >> This patch adds linking device tree blobs into vmlinux. DTB's are
    >> added by adding the blob object name to list of objects to be linked
    >> into the image.
    >> e.g:
    >> obj-$(CONFIG_TEST_DTB) += test.dtb.o
    >>
    >> The set of DTB linked into the image is controlled the Kconfig file
    >> in arch/x86/kernel/dts/Kconfig
    >>
    >> Signed-off-by: Dirk Brandewie<dirk.brandewie@gmail.com>
    >> ---
    >> arch/x86/Kconfig | 6 +++++-
    >> arch/x86/kernel/Makefile | 6 ++++++
    >> arch/x86/kernel/dts/Kconfig | 7 +++++++
    >> 3 files changed, 18 insertions(+), 1 deletions(-)
    >> create mode 100644 arch/x86/kernel/dts/Kconfig
    >>
    >> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
    >> index 5904f38..f2f516a 100644
    >> --- a/arch/x86/Kconfig
    >> +++ b/arch/x86/Kconfig
    >> @@ -299,13 +299,17 @@ config X86_BIGSMP
    >> ---help---
    >> This option is needed for the systems that have more than 8 CPUs
    >>
    >> -config X86_OF
    >> +menuconfig X86_OF
    >> bool "Support for device tree"
    >> select OF
    >> select OF_FLATTREE
    >> ---help---
    >> Device tree support on X86.
    >>
    >> +if X86_OF
    >> +source arch/x86/kernel/dts/Kconfig
    >> +endif
    >> +
    >> if X86_32
    >> config X86_EXTENDED_PLATFORM
    >> bool "Support for extended (non-PC) x86 platforms"
    >> diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
    >> index 586df14..49e017d 100644
    >> --- a/arch/x86/kernel/Makefile
    >> +++ b/arch/x86/kernel/Makefile
    >> @@ -114,6 +114,12 @@ obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
    >> obj-$(CONFIG_X86_OF) += prom.o
    >>
    >> ###
    >> +# device tree blobs
    >> +obj-$(CONFIG_CE4100_DTB) += ce4100.dtb.o
    >> +obj-$(CONFIG_TEST_DTB) += test.dtb.o
    >> +
    >> +
    >> +###
    >> # 64 bit specific files
    >> ifeq ($(CONFIG_X86_64),y)
    >> obj-$(CONFIG_AUDIT) += audit_64.o
    >> diff --git a/arch/x86/kernel/dts/Kconfig b/arch/x86/kernel/dts/Kconfig
    >> new file mode 100644
    >> index 0000000..d3e5cd4
    >> --- /dev/null
    >> +++ b/arch/x86/kernel/dts/Kconfig
    >> @@ -0,0 +1,7 @@
    >> +config CE4100_DTB
    >> + bool "Intel CE4100"
    >> +
    >> +config TEST_DTB
    >> + bool "Test DTS"
    >> +
    >> +
    >
    > As previously mentioned, this isn't going to scale. Need to look at
    > allowing the user to specify a list of .dtbs that will be linked in.
    >

    These config variables will likely get pushed into being set when the
    platform configuration is selected. I still need to talk to the x86 maintainers
    and my distribution team to figure out what is going to happen here.

    > g.
    >
    >> --
    >> 1.7.2.3
    >>
    >> _______________________________________________
    >> devicetree-discuss mailing list
    >> devicetree-discuss@lists.ozlabs.org
    >> https://lists.ozlabs.org/listinfo/devicetree-discuss



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