From: Palmer Dabbelt <palmer@sifive.com>
To: mick@ics.forth.gr
Cc: mick@ics.forth.gr, dmaliotaki@gmail.com,
linux-riscv@lists.infradead.org, aou@eecs.berkeley.edu
Subject: Re: [PATCH v3] RISC-V: Update Kconfig to better handle CMDLINE
Date: Mon, 19 Nov 2018 13:05:50 -0800 (PST) [thread overview]
Message-ID: <mhng-236f884c-259b-4653-8aa0-5af7ffc205f7@palmer-si-x1c4> (raw)
Message-ID: <20181119210550.drltEi5JfyXo3d1brFGhJw99nmutQqgwz5l-lYMhw-U@z> (raw)
In-Reply-To: <20181118000656.15656-1-mick@ics.forth.gr>
On Sat, 17 Nov 2018 16:06:56 PST (-0800), mick@ics.forth.gr wrote:
> Added a menu to choose how the built-in command line will be
> used and CMDLINE_EXTEND for compatibility with FDT code.
>
> v2: Improved help messages, removed references to bootloader
> and made them more descriptive. I also asked help from a
> friend who's a language expert just in case.
>
> v3: This time used the corrected text
>
> Signed-off-by: Nick Kossifidis <mick@ics.forth.gr>
> Signed-off-by: Debbie Maliotaki <dmaliotaki@gmail.com>
> ---
> arch/riscv/Kconfig | 57 +++++++++++++++++++++++++++++++-----------------------
> 1 file changed, 33 insertions(+), 24 deletions(-)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 55da93f4e..808624f6b 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -227,39 +227,48 @@ endmenu
>
> menu "Boot options"
>
> -config CMDLINE_BOOL
> - bool "Built-in kernel command line"
> +config CMDLINE
> + string "Built-in kernel command line"
> help
> - For most platforms, it is firmware or second stage bootloader
> - that by default specifies the kernel command line options.
> - However, it might be necessary or advantageous to either override
> - the default kernel command line or add a few extra options to it.
> - For such cases, this option allows hardcoding command line options
> - directly into the kernel.
> + For most platforms, the arguments for the kernel's command line
> + are provided at run-time, during boot. However, there are cases
> + where either no arguments are being provided or the provided
> + arguments are insufficient or even invalid.
>
> - For that, choose 'Y' here and fill in the extra boot parameters
> - in CONFIG_CMDLINE.
> + When that occurs, it is possible to define a built-in command
> + line here and choose how the kernel should use it later on.
>
> - The built-in options will be concatenated to the default command
> - line if CMDLINE_FORCE is set to 'N'. Otherwise, the default
> - command line will be ignored and replaced by the built-in string.
> +choice
> + prompt "Built-in command line usage" if CMDLINE != ""
> + default CMDLINE_FALLBACK
> + help
> + Choose how the kernel will handle the provided built-in command
> + line.
>
> -config CMDLINE
> - string "Built-in kernel command string"
> - depends on CMDLINE_BOOL
> - default ""
> +config CMDLINE_FALLBACK
> + bool "Fallback"
> help
> - Supply command-line options at build time by entering them here.
> + Use the built-in command line as fallback in case we get nothing
> + during boot. This is the default behaviour.
> +
> +config CMDLINE_EXTEND
> + bool "Extension"
> + help
> + The command-line arguments provided during boot will be
> + appended to the built-in command line. This is useful in
> + cases where the provided arguments are insufficient and
> + you don't want to or cannot modify them.
> +
>
> config CMDLINE_FORCE
> - bool "Built-in command line overrides bootloader arguments"
> - depends on CMDLINE_BOOL
> + bool "Forced"
> help
> - Set this option to 'Y' to have the kernel ignore the bootloader
> - or firmware command line. Instead, the built-in command line
> - will be used exclusively.
> + Always use the built-in command line, even if we get one during
> + boot. This is useful in case you need to override the provided
> + command line on systems where you don't have or want control
> + over it.
>
> - If you don't know what to do here, say N.
> +endchoice
>
> endmenu
Thanks, but I still don't like the names of the options. I've just gone ahead
and sent a v4, let me know if that looks OK to you -- that's what I was trying
to say the first time.
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2018-11-19 21:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-18 0:06 [PATCH v3] RISC-V: Update Kconfig to better handle CMDLINE Nick Kossifidis
2018-11-18 0:06 ` Nick Kossifidis
2018-11-19 21:05 ` Palmer Dabbelt [this message]
2018-11-19 21:05 ` Palmer Dabbelt
2018-11-19 22:50 ` Nick Kossifidis
2018-11-19 22:50 ` Nick Kossifidis
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=mhng-236f884c-259b-4653-8aa0-5af7ffc205f7@palmer-si-x1c4 \
--to=palmer@sifive.com \
--cc=aou@eecs.berkeley.edu \
--cc=dmaliotaki@gmail.com \
--cc=linux-riscv@lists.infradead.org \
--cc=mick@ics.forth.gr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).