Eric Lee / smarc-uboot

25 Nov, 2014

1 commit

08 Nov, 2014

1 commit

  • cb6e7b0db   kbuild: improve multi-objs dependency and cleanups ... Browse Code »

    Since Linux 3.18-rc1, Kbuild is able to handle multi-objs
    dependency correctly, which also allows us futher cleanups
    of some makefiles.

    This commit imports those commits:

    [1] commit c8589d1e9e01 by Masahiro Yamada
    kbuild: handle multi-objs dependency appropriately

    [2] commit 97e3226e6e98 by Masahiro Yamada
    kbuild: handle the dependency of multi-objs hostprogs appropriately

    [3] commit 022af62d0190 by Masahiro Yamada
    kbuild: refactor script/kconfig/Makefile

    [4] commit 221ecca6cafe by Masahiro Yamada
    kbuild: remove redundant clean-files from scripts/kconfig/Makefile

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     

21 Jun, 2014

2 commits

20 Jun, 2014

1 commit

06 Jun, 2014

1 commit

18 Apr, 2014

1 commit

  • 598e2d338   kbuild: sync with Linux Kernel v3.15-rc1 ... Browse Code »
    46

    This commit imports Kbuild-related updates
    from v3.14 to v3.15-rc1.

    - commit 3d3d6b8474204b6819688c9800774d52d370a538
    kbuild: LLVMLinux: Adapt warnings for compilation with clang
    - commit 61163efae02040f66a95c8ed17f4407951ba58fa
    kbuild: LLVMLinux: Add Kbuild support for building kernel with Clang
    - commit 79192ca8ebd9a25c583aa46024a250fef1e7766f
    scripts: objdiff: detect object code changes between two commits
    - commit 1c9e70a55b088d97a59241744fe459409d0c3582
    kbuild: create a build directory automatically for out-of-tree build
    - commit a03fcb50e816a69acffb13b5e56db75063aeba8a
    kbuild: remove redundant '.*.cmd' pattern from make distclean
    - commit 13338935f1574a2dcd1c891461b0dcc42f8cff42
    kbuild: move "quote" to Kbuild.include to be consistent
    - commit bfdfaeae500a3b194b73b01e92a8034791a58b7f
    kbuild: specify build_docproc as a phony target
    - commit f4d4ffc03efc864645b990e1d579bbe1b8e358a4
    kbuild: dtbs_install: new make target
    - commit 1e64ff42ea3d8d2fc8aa71f9717b3c1cb6c2f893
    Kbuild, lto: Disable LTO for asm-offsets.c
    - commit ccbef1674a1579842c7dbdf554efca85d2cd245a
    Kbuild, lto: add ld-version and ld-ifversion macros
    - commit ae63b2d7bdd9bd66b88843be0daf8e37d8f0b574
    scripts/tags.sh: Ignore *.mod.c
    - commit e36aaea28972c57a32a3ba5365e61633739719b9
    kbuild: Fix silent builds with make-4

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     

07 Mar, 2014

1 commit

  • 026f9cf24   kbuild: improve Kbuild speed ... Browse Code »

    Kbuild brought about many advantages for us but a significant
    performance regression was reported by Simon Glass.

    After some discussions and analysis, it turned out
    its main cause is in $(call cc-option,...).

    Historically, U-Boot parses all config.mk
    (arch/*/config.mk and board/*/config.mk)
    every time descending into subdirectories.
    That means cc-options are evaluated over and over again.

    $(call cc-option,...) is useful but costly.
    So we want to evaluate them only in ./Makefile
    and spl/Makefile and export compiler flags.

    This commit changes the build system as follows:

    - Modify scripts/Makefile.build to not include config.mk
    Instead, add $(PLATFORM_CPPFLAGS) to asflags-y, ccflags-y,
    cppflags-y.

    - Export many variables
    Going forward, Kbuild will not parse config.mk files
    when it descends into subdirectories.
    If we want to set variables in config.mk and use them
    in subdirectories, they must be exported.

    This is the list of variables to get exported:
    PLATFORM_CPPFLAGS
    CPUDIR
    BOARDDIR
    OBJCOPYFLAGS
    LDFLAGS
    LDFLAGS_FINAL
    (used in nand_spl/board/*/*/Makefile)
    CONFIG_STANDALONE_LOAD_ADDR
    (used in examples/standalone/Makefile)
    SYM_PREFIX
    (used in examples/standalone/Makefile)
    RELFLAGS
    (used in examples/standalone/Makefile)

    - Delete CPPFLAGS
    This variable has been replaced with PLATFORM_CPPFLAGS

    - Copy gcclibdir from example/standalone/Makefile
    to arch/sparc/config.mk
    The reference in CONFIG_STANDALONE_LOAD_ADDR must be
    resolved before it is exported.

    Signed-off-by: Masahiro Yamada
    Reported-by: Simon Glass
    Acked-by: Simon Glass
    Tested-by: Simon Glass [on Sandbox]
    Tested-by: Stephen Warren [on Tegra]

    Masahiro Yamada
     

20 Feb, 2014

4 commits

  • 5ab502cb8   dts: move device tree sources to arch/$(ARCH)/dts/ ... Browse Code »

    Unlike Linux Kernel, U-Boot historically had *.dts files under
    board/$(VENDOR)/dts/ and *.dtsi files under arch/$(ARCH)/dts/.

    I think arch/$(ARCH)/dts dicretory is a better location
    to store both *.dts and *.dtsi files.

    For example, before this commit, board/xilinx/dts directory
    had both Microblaze dts (microblaze-generic.dts) and
    ARM dts (zynq-*.dts), which are totally unrelated.

    This commit moves *.dts to arch/$(ARCH)/dts/ directories,
    allowing us to describe nicely mutiple DTBs generation in the next commit.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     
  • 6ab6b2afa   dts: re-write dts/Makefile more simply with Kbuild ... Browse Code »
    58

    Useful rules in scripts/Makefile.lib allows us to easily
    generate a device tree blob and wrap it in assembly code.

    We do not need to parse a linker script to get output format and arch.

    This commit deletes ./u-boot.dtb since it is a copy of dts/dt.dtb.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada
     
  • 6825a95b0   kbuild: use Linux Kernel build scripts ... Browse Code »

    Now we are ready to switch over to real Kbuild.

    This commit disables temporary scripts:
    scripts/{Makefile.build.tmp, Makefile.host.tmp}
    and enables real Kbuild scripts:
    scripts/{Makefile.build,Makefile.host,Makefile.lib}.

    This switch is triggered by the line in scripts/Kbuild.include
    -build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
    +build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj

    We need to adjust some build scripts for U-Boot.
    But smaller amount of modification is preferable.

    Additionally, we need to fix compiler flags which are
    locally added or removed.

    In Kbuild, it is not allowed to change CFLAGS locally.
    Instead, ccflags-y, asflags-y, cppflags-y,
    CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
    are prepared for that purpose.

    Signed-off-by: Masahiro Yamada
    Tested-by: Gerhard Sittig

    Masahiro Yamada
     
  • 22433fc54   kbuild: import more build scripts from Linux v3.13 tag ... Browse Code »

    This commit imports build scripts from Linux Kernel v3.13
    as they are.

    I know they include some trailing spaces
    but I am intentionally keeping them untouched.

    Signed-off-by: Masahiro Yamada

    Masahiro Yamada