From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753655Ab0HaIix (ORCPT ); Tue, 31 Aug 2010 04:38:53 -0400 Received: from mtagate2.de.ibm.com ([195.212.17.162]:50154 "EHLO mtagate2.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752420Ab0HaIiv (ORCPT ); Tue, 31 Aug 2010 04:38:51 -0400 Message-Id: <20100831083843.853005604@linux.vnet.ibm.com> References: <20100831082307.064687027@linux.vnet.ibm.com> User-Agent: quilt/0.46-1 Date: Tue, 31 Aug 2010 10:23:08 +0200 From: Hendrik Brueckner To: mmarek@suse.cz, Sam Ravnborg Cc: Michael Holzheu , tabbott@ksplice.com, vda.linux@googlemail.com, hpa@linux.intel.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, heiko.carstens@de.ibm.com, brueckner@linux.vnet.ibm.com, schwidefsky@de.ibm.com Subject: [PATCH 1/2] initramfs: Generalize initramfs_data.xxx.S variants Content-Disposition: inline; filename=irfs1.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove initramfs_data.{lzo,lzma,gz,bz2}.S variants and use a common implementation in initramfs_data.S. The common implementation expects the file name of the initramfs to be defined in INITRAMFS_IMAGE. Change the Makefile to set the INITRAMFS_IMAGE define symbol according to the selected compression method. Signed-off-by: Hendrik Brueckner --- usr/Makefile | 6 ++++-- usr/initramfs_data.S | 5 +++-- usr/initramfs_data.bz2.S | 29 ----------------------------- usr/initramfs_data.gz.S | 29 ----------------------------- usr/initramfs_data.lzma.S | 29 ----------------------------- usr/initramfs_data.lzo.S | 29 ----------------------------- 6 files changed, 7 insertions(+), 120 deletions(-) --- a/usr/Makefile +++ b/usr/Makefile @@ -18,13 +18,15 @@ suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZ # Lzo suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZO) = .lzo +AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)" + # Generate builtin.o based on initramfs_data.o -obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data$(suffix_y).o +obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o # initramfs_data.o contains the compressed initramfs_data.cpio image. # The image is included using .incbin, a dependency which is not # tracked automatically. -$(obj)/initramfs_data$(suffix_y).o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE +$(obj)/initramfs_data.o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE ##### # Generate the initramfs cpio archive --- a/usr/initramfs_data.S +++ b/usr/initramfs_data.S @@ -25,6 +25,7 @@ SECTIONS in the ELF header, as required by certain architectures. */ -.section .init.ramfs,"a" -.incbin "usr/initramfs_data.cpio" +#include +.section .init.ramfs,"a" +.incbin __stringify(INITRAMFS_IMAGE) --- a/usr/initramfs_data.bz2.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - initramfs_data includes the compressed binary that is the - filesystem used for early user space. - Note: Older versions of "as" (prior to binutils 2.11.90.0.23 - released on 2001-07-14) dit not support .incbin. - If you are forced to use older binutils than that then the - following trick can be applied to create the resulting binary: - - - ld -m elf_i386 --format binary --oformat elf32-i386 -r \ - -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o - ld -m elf_i386 -r -o built-in.o initramfs_data.o - - initramfs_data.scr looks like this: -SECTIONS -{ - .init.ramfs : { *(.data) } -} - - The above example is for i386 - the parameters vary from architectures. - Eventually look up LDFLAGS_BLOB in an older version of the - arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced. - - Using .incbin has the advantage over ld that the correct flags are set - in the ELF header, as required by certain architectures. -*/ - -.section .init.ramfs,"a" -.incbin "usr/initramfs_data.cpio.bz2" --- a/usr/initramfs_data.gz.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - initramfs_data includes the compressed binary that is the - filesystem used for early user space. - Note: Older versions of "as" (prior to binutils 2.11.90.0.23 - released on 2001-07-14) dit not support .incbin. - If you are forced to use older binutils than that then the - following trick can be applied to create the resulting binary: - - - ld -m elf_i386 --format binary --oformat elf32-i386 -r \ - -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o - ld -m elf_i386 -r -o built-in.o initramfs_data.o - - initramfs_data.scr looks like this: -SECTIONS -{ - .init.ramfs : { *(.data) } -} - - The above example is for i386 - the parameters vary from architectures. - Eventually look up LDFLAGS_BLOB in an older version of the - arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced. - - Using .incbin has the advantage over ld that the correct flags are set - in the ELF header, as required by certain architectures. -*/ - -.section .init.ramfs,"a" -.incbin "usr/initramfs_data.cpio.gz" --- a/usr/initramfs_data.lzma.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - initramfs_data includes the compressed binary that is the - filesystem used for early user space. - Note: Older versions of "as" (prior to binutils 2.11.90.0.23 - released on 2001-07-14) dit not support .incbin. - If you are forced to use older binutils than that then the - following trick can be applied to create the resulting binary: - - - ld -m elf_i386 --format binary --oformat elf32-i386 -r \ - -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o - ld -m elf_i386 -r -o built-in.o initramfs_data.o - - initramfs_data.scr looks like this: -SECTIONS -{ - .init.ramfs : { *(.data) } -} - - The above example is for i386 - the parameters vary from architectures. - Eventually look up LDFLAGS_BLOB in an older version of the - arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced. - - Using .incbin has the advantage over ld that the correct flags are set - in the ELF header, as required by certain architectures. -*/ - -.section .init.ramfs,"a" -.incbin "usr/initramfs_data.cpio.lzma" --- a/usr/initramfs_data.lzo.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - initramfs_data includes the compressed binary that is the - filesystem used for early user space. - Note: Older versions of "as" (prior to binutils 2.11.90.0.23 - released on 2001-07-14) dit not support .incbin. - If you are forced to use older binutils than that then the - following trick can be applied to create the resulting binary: - - - ld -m elf_i386 --format binary --oformat elf32-i386 -r \ - -T initramfs_data.scr initramfs_data.cpio.gz -o initramfs_data.o - ld -m elf_i386 -r -o built-in.o initramfs_data.o - - initramfs_data.scr looks like this: -SECTIONS -{ - .init.ramfs : { *(.data) } -} - - The above example is for i386 - the parameters vary from architectures. - Eventually look up LDFLAGS_BLOB in an older version of the - arch/$(ARCH)/Makefile to see the flags used before .incbin was introduced. - - Using .incbin has the advantage over ld that the correct flags are set - in the ELF header, as required by certain architectures. -*/ - -.section .init.ramfs,"a" -.incbin "usr/initramfs_data.cpio.lzo" --