linux-kernel - Re: [PATCH] arm64: update Kconfig to better handle CMDLINE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <CAPnxhu4=CZ+EH76uubVdRrE4MLpiRqfjyD-yFn3doSn_ymE1-A@mail.gmail.com>
Date:   Fri, 27 Sep 2019 15:51:44 +0200
From:   Jan Kaisrlik <ja.kaisrlik@...il.com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     catalin.marinas@....com, will@...nel.org
Subject: Re: [PATCH] arm64: update Kconfig to better handle CMDLINE

+ linux-kernel


On Fri, Sep 20, 2019 at 6:43 PM <ja.kaisrlik@...il.com> wrote:
>
> From: Jan Kaisrlik <ja.kaisrlik@...il.com>
>
> Added a menu to choose how to CMDLINE will be handled. Config strings
> were copied from arm32 port.
>
> Signed-off-by: Jan Kaisrlik <ja.kaisrlik@...il.com>
> ---
>  arch/arm64/Kconfig | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 3adcec05b1f6..b1dd948f9665 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -1538,6 +1538,23 @@ config CMDLINE
>           entering them here. As a minimum, you should specify the the
>           root device (e.g. root=/dev/nfs).
>
> +choice
> +       prompt "Kernel command line type" if CMDLINE != ""
> +       default CMDLINE_FROM_BOOTLOADER
> +
> +config CMDLINE_FROM_BOOTLOADER
> +       bool "Use bootloader kernel arguments if available"
> +       help
> +         Uses the command-line options passed by the boot loader. If
> +         the boot loader doesn't provide any, the default kernel command
> +         string provided in CMDLINE will be used.
> +
> +config CMDLINE_EXTEND
> +       bool "Extend bootloader kernel arguments"
> +       help
> +         The command-line arguments provided by the boot loader will be
> +         appended to the default kernel command string.
> +
>  config CMDLINE_FORCE
>         bool "Always use the default kernel command string"
>         help
> @@ -1545,6 +1562,7 @@ config CMDLINE_FORCE
>           loader passes other arguments to the kernel.
>           This is useful if you cannot or don't want to change the
>           command-line options your boot loader passes to the kernel.
> +endchoice
>
>  config EFI_STUB
>         bool
> --
> 2.23.0
>