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Fri, 2 Apr 2021 17:18:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id BmkAXxz0r5S7; Fri, 2 Apr 2021 17:18:10 +0200 (CEST) Received: from po16121vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id D1B498BB79; Fri, 2 Apr 2021 17:18:09 +0200 (CEST) Received: by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0) id A374467989; Fri, 2 Apr 2021 15:18:09 +0000 (UTC) Message-Id: <2e49b9ae60a90aec8b555946279cab059a2812a4.1617375802.git.christophe.leroy@csgroup.eu> In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v4 08/20] arm: Convert to GENERIC_CMDLINE To: will@kernel.org, danielwa@cisco.com, robh@kernel.org, daniel@gimpelevich.san-francisco.ca.us, arnd@kernel.org, akpm@linux-foundation.org Cc: linux-arch@vger.kernel.org, devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, microblaze , linux-mips@vger.kernel.org, nios2 , openrisc@lists.librecores.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, x86@kernel.org, linux-xtensa@linux-xtensa.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org Date: Fri, 2 Apr 2021 15:18:09 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210402_161811_150642_1C600A4B X-CRM114-Status: GOOD ( 13.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This converts the architecture to GENERIC_CMDLINE. Signed-off-by: Christophe Leroy --- v4: - Removed dependency to ATAGS - Removed the message when forcing --- arch/arm/Kconfig | 38 +---------------------------------- arch/arm/kernel/atags_parse.c | 13 +++--------- 2 files changed, 4 insertions(+), 47 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5da96f5df48f..1a1808b0eef7 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -50,6 +50,7 @@ config ARM select GENERIC_ARCH_TOPOLOGY if ARM_CPU_TOPOLOGY select GENERIC_ATOMIC64 if CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI select GENERIC_CLOCKEVENTS_BROADCAST if SMP + select GENERIC_CMDLINE select GENERIC_IRQ_IPI if SMP select GENERIC_CPU_AUTOPROBE select GENERIC_EARLY_IOREMAP @@ -1740,43 +1741,6 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND endchoice -config CMDLINE - string "Default kernel command string" - default "" - help - On some architectures (e.g. CATS), there is currently no way - for the boot loader to pass arguments to the kernel. For these - architectures, you should supply some command-line options at build - time by entering them here. As a minimum, you should specify the - memory size and the root device (e.g., mem=64M root=/dev/nfs). - -choice - prompt "Kernel command line type" if CMDLINE != "" - default CMDLINE_FROM_BOOTLOADER - depends on ATAGS - -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 - Always use the default kernel command string, even if the boot - 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 XIP_KERNEL bool "Kernel Execute-In-Place from ROM" depends on !ARM_LPAE && !ARCH_MULTIPLATFORM diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c index 373b61f9a4f0..ef97ec015c51 100644 --- a/arch/arm/kernel/atags_parse.c +++ b/arch/arm/kernel/atags_parse.c @@ -14,6 +14,7 @@ * is not parsed in any way). */ +#include #include #include #include @@ -120,16 +121,8 @@ __tagtable(ATAG_REVISION, parse_tag_revision); static int __init parse_tag_cmdline(const struct tag *tag) { -#if defined(CONFIG_CMDLINE_EXTEND) - strlcat(default_command_line, " ", COMMAND_LINE_SIZE); - strlcat(default_command_line, tag->u.cmdline.cmdline, - COMMAND_LINE_SIZE); -#elif defined(CONFIG_CMDLINE_FORCE) - pr_warn("Ignoring tag cmdline (using the default kernel command line)\n"); -#else - strlcpy(default_command_line, tag->u.cmdline.cmdline, - COMMAND_LINE_SIZE); -#endif + cmdline_build(default_command_line, tag->u.cmdline.cmdline); + return 0; }