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From:   Rob Herring <robh@kernel.org>
Date:   Fri, 26 Mar 2021 09:04:25 -0600
Message-ID: <CAL_JsqLQTM0Xw_skFeysJyYAyW3B=0u0xgePgoUYSpKaWw9SjQ@mail.gmail.com>
Subject: Re: [PATCH v3 00/17] Implement GENERIC_CMDLINE
To:     Christophe Leroy <christophe.leroy@csgroup.eu>
Cc:     Will Deacon <will@kernel.org>, Daniel Walker <danielwa@cisco.com>,
        Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>,
        "open list:GENERIC INCLUDE/ASM HEADER FILES" 
        <linux-arch@vger.kernel.org>, devicetree@vger.kernel.org,
        linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        microblaze <monstr@monstr.eu>,
        "open list:MIPS" <linux-mips@vger.kernel.org>,
        nios2 <ley.foon.tan@intel.com>,
        Openrisc <openrisc@lists.librecores.org>,
        linux-hexagon@vger.kernel.org,
        linux-riscv <linux-riscv@lists.infradead.org>,
        X86 ML <x86@kernel.org>, linux-xtensa@linux-xtensa.org,
        SH-Linux <linux-sh@vger.kernel.org>,
        sparclinux <sparclinux@vger.kernel.org>
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On Fri, Mar 26, 2021 at 7:44 AM Christophe Leroy
<christophe.leroy@csgroup.eu> wrote:
>
> The purpose of this series is to improve and enhance the
> handling of kernel boot arguments.
>
> It is first focussed on powerpc but also extends the capability
> for other arches.
>
> This is based on suggestion from Daniel Walker <danielwa@cisco.com>
>
> Main changes in V3:
> - Also accept destination equal to source in cmdline_build() by setting a tmp buffer in __initdata. Powerpc provides different source and destination and call __cmdline_build() directly.
> - Taken comments received from Will and Rob
> - Converted all architectures (Only tested on powerpc)
>
> Christophe Leroy (17):
>   cmdline: Add generic function to build command line.
>   drivers: of: use cmdline building function
>   cmdline: Gives architectures opportunity to use generically defined
>     boot cmdline manipulation
>   powerpc: Convert to GENERIC_CMDLINE
>   arm: Convert to GENERIC_CMDLINE
>   arm64: Convert to GENERIC_CMDLINE
>   hexagon: Convert to GENERIC_CMDLINE
>   microblaze: Convert to GENERIC_CMDLINE
>   nios2: Convert to GENERIC_CMDLINE
>   openrisc: Convert to GENERIC_CMDLINE
>   riscv: Convert to GENERIC_CMDLINE
>   sh: Convert to GENERIC_CMDLINE
>   sparc: Convert to GENERIC_CMDLINE
>   xtensa: Convert to GENERIC_CMDLINE
>   x86: Convert to GENERIC_CMDLINE
>   mips: Convert to GENERIC_CMDLINE
>   cmdline: Remove CONFIG_CMDLINE_EXTEND
>
>  arch/arm/Kconfig                            | 38 +-------------
>  arch/arm/kernel/atags_parse.c               | 15 ++----
>  arch/arm64/Kconfig                          | 33 +-----------
>  arch/arm64/kernel/idreg-override.c          |  9 ++--
>  arch/hexagon/Kconfig                        | 11 +---
>  arch/hexagon/kernel/setup.c                 | 10 +---
>  arch/microblaze/Kconfig                     | 24 +--------
>  arch/microblaze/configs/mmu_defconfig       |  2 +-
>  arch/microblaze/kernel/head.S               |  4 +-
>  arch/mips/Kconfig                           |  1 +
>  arch/mips/Kconfig.debug                     | 44 ----------------
>  arch/mips/configs/ar7_defconfig             |  1 -
>  arch/mips/configs/bcm47xx_defconfig         |  1 -
>  arch/mips/configs/bcm63xx_defconfig         |  1 -
>  arch/mips/configs/bmips_be_defconfig        |  1 -
>  arch/mips/configs/bmips_stb_defconfig       |  1 -
>  arch/mips/configs/capcella_defconfig        |  1 -
>  arch/mips/configs/ci20_defconfig            |  1 -
>  arch/mips/configs/cu1000-neo_defconfig      |  1 -
>  arch/mips/configs/cu1830-neo_defconfig      |  1 -
>  arch/mips/configs/e55_defconfig             |  1 -
>  arch/mips/configs/generic_defconfig         |  1 -
>  arch/mips/configs/gpr_defconfig             |  1 -
>  arch/mips/configs/loongson3_defconfig       |  1 -
>  arch/mips/configs/mpc30x_defconfig          |  1 -
>  arch/mips/configs/rt305x_defconfig          |  1 -
>  arch/mips/configs/tb0219_defconfig          |  1 -
>  arch/mips/configs/tb0226_defconfig          |  1 -
>  arch/mips/configs/tb0287_defconfig          |  1 -
>  arch/mips/configs/workpad_defconfig         |  1 -
>  arch/mips/configs/xway_defconfig            |  1 -
>  arch/mips/kernel/relocate.c                 |  4 +-
>  arch/mips/kernel/setup.c                    | 40 +--------------
>  arch/mips/pic32/pic32mzda/early_console.c   |  2 +-
>  arch/mips/pic32/pic32mzda/init.c            |  2 -
>  arch/nios2/Kconfig                          | 24 +--------
>  arch/nios2/kernel/setup.c                   | 13 ++---
>  arch/openrisc/Kconfig                       | 10 +---
>  arch/powerpc/Kconfig                        | 37 +------------
>  arch/powerpc/kernel/prom_init.c             | 17 +++---
>  arch/riscv/Kconfig                          | 44 +---------------
>  arch/riscv/kernel/setup.c                   |  5 +-
>  arch/sh/Kconfig                             | 30 +----------
>  arch/sh/configs/ap325rxa_defconfig          |  2 +-
>  arch/sh/configs/dreamcast_defconfig         |  2 +-
>  arch/sh/configs/ecovec24-romimage_defconfig |  2 +-
>  arch/sh/configs/ecovec24_defconfig          |  2 +-
>  arch/sh/configs/edosk7760_defconfig         |  2 +-
>  arch/sh/configs/espt_defconfig              |  2 +-
>  arch/sh/configs/j2_defconfig                |  2 +-
>  arch/sh/configs/kfr2r09-romimage_defconfig  |  2 +-
>  arch/sh/configs/kfr2r09_defconfig           |  2 +-
>  arch/sh/configs/lboxre2_defconfig           |  2 +-
>  arch/sh/configs/microdev_defconfig          |  2 +-
>  arch/sh/configs/migor_defconfig             |  2 +-
>  arch/sh/configs/polaris_defconfig           |  2 +-
>  arch/sh/configs/r7780mp_defconfig           |  2 +-
>  arch/sh/configs/r7785rp_defconfig           |  2 +-
>  arch/sh/configs/rsk7201_defconfig           |  2 +-
>  arch/sh/configs/rsk7203_defconfig           |  2 +-
>  arch/sh/configs/rts7751r2d1_defconfig       |  2 +-
>  arch/sh/configs/rts7751r2dplus_defconfig    |  2 +-
>  arch/sh/configs/sdk7780_defconfig           |  2 +-
>  arch/sh/configs/sdk7786_defconfig           |  2 +-
>  arch/sh/configs/se7206_defconfig            |  2 +-
>  arch/sh/configs/se7343_defconfig            |  2 +-
>  arch/sh/configs/se7712_defconfig            |  2 +-
>  arch/sh/configs/se7721_defconfig            |  2 +-
>  arch/sh/configs/se7724_defconfig            |  2 +-
>  arch/sh/configs/se7751_defconfig            |  2 +-
>  arch/sh/configs/se7780_defconfig            |  2 +-
>  arch/sh/configs/sh03_defconfig              |  2 +-
>  arch/sh/configs/sh2007_defconfig            |  2 +-
>  arch/sh/configs/sh7757lcr_defconfig         |  2 +-
>  arch/sh/configs/sh7763rdp_defconfig         |  2 +-
>  arch/sh/configs/shmin_defconfig             |  2 +-
>  arch/sh/configs/shx3_defconfig              |  2 +-
>  arch/sh/configs/titan_defconfig             |  2 +-
>  arch/sh/configs/ul2_defconfig               |  2 +-
>  arch/sh/kernel/setup.c                      | 11 +---
>  arch/sparc/Kconfig                          | 18 +------
>  arch/sparc/prom/bootstr_64.c                |  2 +-
>  arch/x86/Kconfig                            | 45 +---------------
>  arch/x86/kernel/setup.c                     | 17 +-----
>  arch/xtensa/Kconfig                         | 15 +-----
>  arch/xtensa/configs/audio_kc705_defconfig   |  1 -
>  arch/xtensa/configs/common_defconfig        |  1 -
>  arch/xtensa/configs/generic_kc705_defconfig |  1 -
>  arch/xtensa/configs/iss_defconfig           |  1 -
>  arch/xtensa/configs/nommu_kc705_defconfig   |  1 -
>  arch/xtensa/configs/smp_lx200_defconfig     |  1 -
>  arch/xtensa/configs/virt_defconfig          |  1 -
>  arch/xtensa/configs/xip_kc705_defconfig     |  1 -
>  arch/xtensa/kernel/setup.c                  | 10 +---
>  drivers/firmware/efi/libstub/x86-stub.c     | 26 +++++-----

You missed efi-stub.c which has CMDLINE_EXTEND.

>  drivers/of/fdt.c                            | 23 ++-------
>  include/linux/cmdline.h                     | 57 +++++++++++++++++++++
>  init/Kconfig                                | 46 +++++++++++++++++
>  98 files changed, 209 insertions(+), 580 deletions(-)
>  create mode 100644 include/linux/cmdline.h
>
> --
> 2.25.0
>