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53e7b5df |
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09-Jan-2022 |
Masahiro Yamada <masahiroy@kernel.org> |
arch: decompressor: remove useless vmlinux.bin.all-y Presumably, arch/{parisc,s390,sh}/boot/compressed/Makefile copied arch/x86/boot/compressed/Makefile, but vmlinux.bin.all-y is useless here because it is the same as $(obj)/vmlinux.bin. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de>
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7ce7e984 |
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09-Jan-2022 |
Masahiro Yamada <masahiroy@kernel.org> |
kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22} GZIP-compressed files end with 4 byte data that represents the size of the original input. The decompressors (the self-extracting kernel) exploit it to know the vmlinux size beforehand. To mimic the GZIP's trailer, Kbuild provides cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}. Unfortunately these macros are used everywhere despite the appended size data is only useful for the decompressors. There is no guarantee that such hand-crafted trailers are safely ignored. In fact, the kernel refuses compressed initramdfs with the garbage data. That is why usr/Makefile overrides size_append to make it no-op. To limit the use of such broken compressed files, this commit renames the existing macros as follows: cmd_bzip2 --> cmd_bzip2_with_size cmd_lzma --> cmd_lzma_with_size cmd_lzo --> cmd_lzo_with_size cmd_lz4 --> cmd_lz4_with_size cmd_xzkern --> cmd_xzkern_with_size cmd_zstd22 --> cmd_zstd22_with_size To keep the decompressors working, I updated the following Makefiles accordingly: arch/arm/boot/compressed/Makefile arch/h8300/boot/compressed/Makefile arch/mips/boot/compressed/Makefile arch/parisc/boot/compressed/Makefile arch/s390/boot/compressed/Makefile arch/sh/boot/compressed/Makefile arch/x86/boot/compressed/Makefile I reused the current macro names for the normal usecases; they produce the compressed data in the proper format. I did not touch the following: arch/arc/boot/Makefile arch/arm64/boot/Makefile arch/csky/boot/Makefile arch/mips/boot/Makefile arch/riscv/boot/Makefile arch/sh/boot/Makefile kernel/Makefile This means those Makefiles will stop appending the size data. I dropped the 'override size_append' hack from usr/Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <n.schier@avm.de>
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3cbadd20 |
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12-Dec-2021 |
Masahiro Yamada <masahiroy@kernel.org> |
parisc: decompressor: do not copy source files while building As commit 7ae4a78daacf ("ARM: 8969/1: decompressor: simplify libfdt builds") stated, copying source files during the build time may not end up with as clean code as expected. Do similar for parisc to clean up the Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
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6f21e734 |
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30-Oct-2021 |
Masahiro Yamada <masahiroy@kernel.org> |
parisc: decompressor: clean up Makefile Do not list the same objects in 'OBJECTS' and 'targets'. Instead, add $(OBJECTS) to 'targets'. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Helge Deller <deller@gmx.de>
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07578f16 |
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30-Oct-2021 |
Masahiro Yamada <masahiroy@kernel.org> |
parisc: decompressor: remove repeated depenency of misc.o The same dependency $(obj)/misc.o: $(obj)/sizes.h ... appears twice, at line 29 and line 55 in this Makefile. Remove the second one. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Helge Deller <deller@gmx.de>
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3da6379a |
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05-Sep-2021 |
Helge Deller <deller@gmx.de> |
parisc: Add missing FORCE prerequisite in Makefile Signed-off-by: Helge Deller <deller@gmx.de>
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3fd84a4f |
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08-May-2020 |
Arnd Bergmann <arnd@arndb.de> |
parisc: use -fno-strict-aliasing for decompressor An experimental patch series of mine reworks how warnings are processed in Kbuild. A side effect is a new warning about a harmless aliasing rule violation in an inline function: In file included from include/linux/rhashtable-types.h:15:0, from include/linux/ipc.h:7, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/sched.h:15, from include/linux/uaccess.h:6, from arch/parisc/boot/compressed/misc.c:7: include/linux/workqueue.h: In function 'work_static': include/linux/workqueue.h:212:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] return *work_data_bits(work) & WORK_STRUCT_STATIC; Make the decompressor use -fno-strict-aliasing like the rest of the kernel for consistency, and to ensure this warning never makes it into a release. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Helge Deller <deller@gmx.de>
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f2c5ed0d |
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01-Aug-2019 |
James Bottomley <James.Bottomley@HansenPartnership.com> |
parisc: Add archclean Makefile target Apparently we don't have an archclean target in our arch/parisc/Makefile, so files in there never get cleaned out by make mrproper. This, in turn means that the sizes.h file in arch/parisc/boot/compressed never gets removed and worse, when you transition to an O=build/parisc[64] build model it overrides the generated file. The upshot being my bzImage was building with a SZ_end that was too small. I fixed it by making mrproper clean everything. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Helge Deller <deller@gmx.de>
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e50beea8 |
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01-Aug-2019 |
Helge Deller <deller@gmx.de> |
parisc: Strip debug info from kernel before creating compressed vmlinuz Same as on x86-64, strip the .comment, .note and debug sections from the Linux kernel before creating the compressed image for the boot loader. Reported-by: James Bottomley <James.Bottomley@HansenPartnership.com> Reported-by: Sven Schnelle <svens@stackframe.org> Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Helge Deller <deller@gmx.de>
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ec8f24b7 |
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19-May-2019 |
Thomas Gleixner <tglx@linutronix.de> |
treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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34c201ae |
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15-Oct-2018 |
Helge Deller <deller@gmx.de> |
parisc: Include compressed vmlinux file in vmlinuz boot kernel Change the parisc vmlinuz boot code to include and process the real compressed vmlinux.gz ELF file instead of a compressed memory dump. This brings parisc in sync on how it's done on x86_64. The benefit of this change is that, e.g. for debugging purposes, one can then extract the vmlinux file out of the vmlinuz which was booted which wasn't possible before. This can be archieved with the existing scripts/extract-vmlinux script, which just needs a small tweak to prefer to extract a compressed file before trying the existing given binary. The downside of this approach is that due to the extra round of decompression/ELF processing we need more physical memory installed to be able to boot a kernel. Signed-off-by: Helge Deller <deller@gmx.de>
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8c031ba6 |
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22-Sep-2017 |
Helge Deller <deller@gmx.de> |
parisc: Unbreak bootloader due to gcc-7 optimizations gcc-7 optimizes the byte-wise accesses of get_unaligned_le32() into word-wise accesses if the 32-bit integer output_len is declared as external. This panics then the bootloader since we don't have the unaligned access fault trap handler installed during boot time. Avoid this optimization by declaring output_len as byte-aligned and thus unbreak the bootloader code. Additionally, compile the boot code optimized for size. Signed-off-by: Helge Deller <deller@gmx.de>
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2f3c7b81 |
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20-Aug-2017 |
Helge Deller <deller@gmx.de> |
parisc: Add core code for self-extracting kernel Signed-off-by: Helge Deller <deller@gmx.de>
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