From: mick@ics.forth.gr (Nick Kossifidis) To: linux-riscv@lists.infradead.org Subject: [PATCH] RISC-V: Update Kconfig to better handle CMDLINE Date: Sat, 10 Nov 2018 03:02:44 +0200 [thread overview] Message-ID: <20181110010244.5837-1-mick@ics.forth.gr> (raw) Add a menu to chose how the built-in command line will be used and add CMDLINE_EXTEND for compatibility with FDT code. Signed-off-by: Nick Kossifidis <mick@ics.forth.gr> --- arch/riscv/Kconfig | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 55da93f4e818..81f884164b52 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -227,39 +227,42 @@ 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. + the provided kernel command line or add a few extra options to it. + For such cases, it is possible to define a built-in command line + here and chose how the kernel should use it later on. - For that, choose 'Y' here and fill in the extra boot parameters - in CONFIG_CMDLINE. +choice + prompt "Built-in command line usage" if CMDLINE != "" + default CMDLINE_FALLBACK + help + Chose how the kernel will handle the provided built-in command + line. - 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. +config CMDLINE_FALLBACK + bool "Fallback" + help + Use the built-in command line as fallback in case we get nothing + from the boot loader. -config CMDLINE - string "Built-in kernel command string" - depends on CMDLINE_BOOL - default "" +config CMDLINE_EXTEND + bool "Extension" help - Supply command-line options at build time by entering them here. + Use the built-in command line as an extension of the command line + provided by the boot loader. 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. + Use the built-in command line in place of the command line + provided by the boot loader. - If you don't know what to do here, say N. +endchoice endmenu -- 2.16.4
WARNING: multiple messages have this Message-ID (diff)
From: Nick Kossifidis <mick@ics.forth.gr> To: linux-riscv@lists.infradead.org Cc: Nick Kossifidis <mick@ics.forth.gr>, palmer@sifive.com, aou@eecs.berkeley.edu Subject: [PATCH] RISC-V: Update Kconfig to better handle CMDLINE Date: Sat, 10 Nov 2018 03:02:44 +0200 [thread overview] Message-ID: <20181110010244.5837-1-mick@ics.forth.gr> (raw) Message-ID: <20181110010244.crbP7Hgce5sZKHGVEMVf9-EbYI5GbTHlnNr2TMFh6QE@z> (raw) Add a menu to chose how the built-in command line will be used and add CMDLINE_EXTEND for compatibility with FDT code. Signed-off-by: Nick Kossifidis <mick@ics.forth.gr> --- arch/riscv/Kconfig | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 55da93f4e818..81f884164b52 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -227,39 +227,42 @@ 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. + the provided kernel command line or add a few extra options to it. + For such cases, it is possible to define a built-in command line + here and chose how the kernel should use it later on. - For that, choose 'Y' here and fill in the extra boot parameters - in CONFIG_CMDLINE. +choice + prompt "Built-in command line usage" if CMDLINE != "" + default CMDLINE_FALLBACK + help + Chose how the kernel will handle the provided built-in command + line. - 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. +config CMDLINE_FALLBACK + bool "Fallback" + help + Use the built-in command line as fallback in case we get nothing + from the boot loader. -config CMDLINE - string "Built-in kernel command string" - depends on CMDLINE_BOOL - default "" +config CMDLINE_EXTEND + bool "Extension" help - Supply command-line options at build time by entering them here. + Use the built-in command line as an extension of the command line + provided by the boot loader. 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. + Use the built-in command line in place of the command line + provided by the boot loader. - If you don't know what to do here, say N. +endchoice endmenu -- 2.16.4 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2018-11-10 1:02 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-11-10 1:02 Nick Kossifidis [this message] 2018-11-10 1:02 ` [PATCH] RISC-V: Update Kconfig to better handle CMDLINE Nick Kossifidis 2018-11-16 16:52 ` Palmer Dabbelt 2018-11-16 16:52 ` Palmer Dabbelt 2018-11-16 17:08 ` Nick Kossifidis 2018-11-16 17:08 ` Nick Kossifidis 2018-11-16 17:14 ` Nick Kossifidis 2018-11-16 17:14 ` Nick Kossifidis 2018-11-16 17:27 ` Palmer Dabbelt 2018-11-16 17:27 ` Palmer Dabbelt 2018-11-16 17:33 ` Nick Kossifidis 2018-11-16 17:33 ` Nick Kossifidis -- strict thread matches above, loose matches on Subject: below -- 2018-10-04 11:32 Nick Kossifidis 2018-10-04 11:32 ` Nick Kossifidis 2018-11-09 18:34 ` Nick Kossifidis 2018-11-09 18:34 ` Nick Kossifidis 2018-11-09 21:05 ` Palmer Dabbelt 2018-11-09 21:05 ` Palmer Dabbelt
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=20181110010244.5837-1-mick@ics.forth.gr \ --to=mick@ics.forth.gr \ --cc=linux-riscv@lists.infradead.org \ /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: linkBe 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).