From patchwork Fri Apr 2 15:18:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 12180949 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAC4EC43461 for ; Fri, 2 Apr 2021 15:18:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9852561057 for ; Fri, 2 Apr 2021 15:18:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235094AbhDBPSH (ORCPT ); Fri, 2 Apr 2021 11:18:07 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:51941 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234717AbhDBPSG (ORCPT ); Fri, 2 Apr 2021 11:18:06 -0400 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 4FBkFh5XNLz9v2lv; Fri, 2 Apr 2021 17:18:00 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id MktCNdTeHFtr; Fri, 2 Apr 2021 17:18:00 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4FBkFh4M9Fz9v2ls; Fri, 2 Apr 2021 17:18:00 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 4E5858BB79; Fri, 2 Apr 2021 17:18:02 +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 TLVHNmtRjBbO; Fri, 2 Apr 2021 17:18:02 +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 9B1828BB7B; Fri, 2 Apr 2021 17:18:01 +0200 (CEST) Received: by po16121vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 600FB67989; Fri, 2 Apr 2021 15:18:01 +0000 (UTC) Message-Id: From: Christophe Leroy Subject: [PATCH v4 00/20] Implement 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 15:18:01 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org The purpose of this series is to improve and enhance the handling of kernel boot arguments. Current situation is that most if not all architectures are using similar options to do some manupulation on command line arguments: - Prepend built-in arguments in front of bootloader provided arguments - Append built-in arguments after bootloader provided arguments - Replace bootloader provided arguments by built-in arguments - Use built-in arguments when none is provided by bootloader. On some architectures, all the options are possible. On other ones, only a subset are available. The purpose of this series is to refactor and enhance the handling of kernel boot arguments so that every architecture can benefit from all possibilities. It is first focussed on powerpc but also extends the capability for other arches. The work has been focussed on minimising the churn in architectures by keeping the most commonly used namings. Main changes in V4: - Included patch from Daniel to replace powerpc's strcpy() by strlcpy() - Using strlcpy() instead of zeroing first char + strlcat() (idea taken frm Daniel's series) - Reworked the convertion of EFI which was wrong in V3 - Added "too long" command line handling - Changed cmdline macro into a function - Done a few fixes in arch (NIOS2, SH, ARM) - Taken comments into account (see individual responses for details) - Tested on powerpc, build tested on ARM64, X86_64. 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 (19): cmdline: Add generic function to build command line. drivers: of: use cmdline building function x86/efi: Replace CONFIG_CMDLINE_OVERRIDE by CONFIG_CMDLINE_FORCE drivers: firmware: efi: 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 Daniel Walker (1): powerpc: convert strcpy to strlcpy in prom_init arch/arm/Kconfig | 38 +-------- arch/arm/kernel/atags_parse.c | 13 +-- 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 | 25 +----- arch/nios2/kernel/setup.c | 13 +-- arch/openrisc/Kconfig | 10 +-- arch/powerpc/Kconfig | 37 +-------- arch/powerpc/kernel/prom_init.c | 46 ++++++----- arch/riscv/Kconfig | 44 +---------- arch/riscv/kernel/setup.c | 7 +- arch/sh/Kconfig | 28 +------ 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 +-- .../firmware/efi/libstub/efi-stub-helper.c | 35 ++++---- drivers/firmware/efi/libstub/efi-stub.c | 23 ++---- drivers/firmware/efi/libstub/efistub.h | 2 +- drivers/firmware/efi/libstub/x86-stub.c | 18 +---- drivers/of/fdt.c | 23 +----- include/linux/cmdline.h | 79 +++++++++++++++++++ init/Kconfig | 46 +++++++++++ usr/Kconfig | 2 +- 102 files changed, 265 insertions(+), 628 deletions(-) create mode 100644 include/linux/cmdline.h