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- Remove several outdated comments
- Clearify the definition of zimage_start and zimage_size and the their
usage
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1382/
Signed-off-by: Ralf Baechle <[email protected]>
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- Remove unused symbols: _fdata, _text; only _edata and _end are needed by
head.S
- Remove unused sections: .sbss, .stab, .gptab.sdata, .gptab.sbss
- Change the alignment to 16 bytes to ensure it is greater than any
fundamental type of a MIPS compiler.
- Clean up comments
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1381/
Signed-off-by: Ralf Baechle <[email protected]>
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The compressed vmlinux.bin is only a temp file so it's ok to use the same
suffix .z for them (.gz,.lzo,.lzma...) to remove several lines and simpify
the maintenance (no need to add the "suffix_$(xxx) := suffix" line).
Signed-off-by: Wu Zhangjin <[email protected]>
To: linux-mips <[email protected]>
Cc: Alexander Clouter <[email protected]>
Cc: Manuel Lauss <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1323/
Signed-off-by: Ralf Baechle <[email protected]>
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Remove the CONFIG_SOC_AU1X00 Kconfig symbol since its job can also be done
by MACH_ALCHEMY, now renamed to MIPS_ALCHEMY.
Signed-off-by: Manuel Lauss <[email protected]>
To: Linux-MIPS <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1461/
Signed-off-by: Ralf Baechle <[email protected]>
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- use hostprogs-y for the elf2ecoff
- list all *.o file in targets
- renamed obj-y to vmlinuzobjs-y (it was confusing to re-use a kbuild variable)
- fix all uses of if_changed/cmd
- use kbuild rules to beautify output
- update clean-file to clean vmlinuz.* in top-level directory
- simplied logic in arch/mips/Makefile for compressed targets
The net result is a more kbuild conformant Makefile but
readability did not increase.
Signed-off-by: Sam Ravnborg <[email protected]>
To: linux-mips <[email protected]>
To: Wu Zhangjin <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/1304/
Signed-off-by: Ralf Baechle <[email protected]>
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This patch adds a new DEBUG_ZBOOT option to allow the users to enable it
to debug the compressed kernel support for a new board and this optoin
should be disabled to reduce the kernel image size and speed up the
kernel booting procedure when the compressed kernel support is stable.
Signed-off-by: Wu Zhangjin <[email protected]>
To: Ralf Baechle <[email protected]>
Cc: Manuel Lauss <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/918/
Signed-off-by: Ralf Baechle <[email protected]>
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Found by
$ find arch/mips/ -name "*.c" | xargs -i grep -H weak {} | grep -v __weak
[Ralf: Made this bulletproof by including <linux/compiler.h>]
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/874/
Signed-off-by: Ralf Baechle <[email protected]>
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Hook up the compressed debug output for all Alchemy systems supported
by current kernel codebase.
Signed-off-by: Manuel Lauss <[email protected]>
To: Linux-MIPS <[email protected]>
Cc: Wu Zhangjin <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/879/
Signed-off-by: Ralf Baechle <[email protected]>
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This patch removes a useless "\" (line break) and tunes the format of a
long line.
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/869/
Signed-off-by: Ralf Baechle <[email protected]>
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Currently [email protected] is not usable; change it to [email protected].
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/829/
Signed-off-by: Ralf Baechle <[email protected]>
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POSIX requires $((<expression>)) arithmetic in sh only to have long
arithmetic so on 32-bit sh binaries might do only 32-bit arithmetic but
the arithmetic done in arch/mips/boot/compressed/Makefile needs 64-bit.
I play with the AR7 platform, so VMLINUX_LOAD_ADDRESS is
0xffffffff94100000, and for an example 4MiB kernel
VMLINUZ_LOAD_ADDRESS is made out to be:
----
alex@berk:~$ bash -c 'printf "%x\n" $((0xffffffff94100000 + 0x400000))'
ffffffff94500000
alex@berk:~$ dash -c 'printf "%x\n" $((0xffffffff94100000 + 0x400000))'
80000000003fffff
----
The former is obviously correct whilst the later breaks things royally.
Fortunately working with only the lower 32bit's works for both bash and
dash:
----
$ bash -c 'printf "%x\n" $((0x94100000 + 0x400000))'
94500000
$ dash -c 'printf "%x\n" $((0x94100000 + 0x400000))'
94500000
----
So, we can split the original 64bit string to two parts, and only
calculate the low 32bit part, which is big enough (1GiB kernel sizes
anyone?) for a normal Linux kernel image file, now, we calculate the
VMLINUZ_LOAD_ADDRESS like this:
1. if present, append top 32bit of VMLINUX_LOAD_ADDRESS" as a prefix
2. get the sum of the low 32bit of VMLINUX_LOAD_ADDRESS + VMLINUX_SIZE
This patch fixes vmlinuz kernel builds on systems where only a
32bit-only math shell is available.
Patch Changelog:
Version 2
- simplified method by using 'expr' for 'substr' and making it work
with dash once again
Version 1
- Revert the removals of '-n "$(VMLINUX_SIZE)"' to avoid the error
of "make clean"
- Consider more cases of the VMLINUX_LOAD_ADDRESS
Version 0
- initial release
Signed-off-by: Alexander Clouter <[email protected]>
Acked-by: Wu Zhangjin <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/861/
Signed-off-by: Ralf Baechle <[email protected]>
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The necessary changes to the x86 Kconfig and boot/compressed to allow the
use of this new compression method.
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Cc: Sergei Shtylyov <[email protected]>
Patchwork: http://patchwork.linux-mips.org/patch/857/
Signed-off-by: Ralf Baechle <[email protected]>
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o Remove the .initrd section. The initrd section was already handled
when vmlinux was linked.
o Discard .MIPS.options, .options, .pdr, .reginfo, .comment and .note
sections. If .MIPS.options is not removed, kernels compiled with gcc
3.4.6 will not boot.
o Clean up the file format.
o Remove several other unneeded sections.
Tested with GCC 3.4.6 and 4.4.1 with and without initrd.
Signed-off-by: Wu Zhangjin <[email protected]>
Cc: [email protected]
Patchwork: http://patchwork.linux-mips.org/patch/785/
Signed-off-by: Ralf Baechle <[email protected]>
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This patch helps to generate smaller kernel images for linux-MIPS,
Here is the effect when using lzma:
$ ls -sh vmlinux
7.1M vmlinux
$ ls -sh vmlinuz
1.5M vmlinuz
Have tested the 32bit kernel on Qemu/Malta and 64bit kernel on FuLoong
Mini PC. both of them work well. and also, tested by Alexander Clouter
on an AR7 based Linksys WAG54Gv2, and by Manuel Lauss on an Alchemy
board.
This -v2 version incorporate the feedback from Ralf, and add the
following changes:
1. add .ecoff, .bin, .erec format support
2. only enable it and the debug source code for the machines we tested
3. a dozen of fixups and cleanups
and if you want to enable it for your board, please try to select
SYS_SUPPORTS_ZBOOT for it, and if the board have an 16550 compatible
uart, you can select SYS_SUPPORTS_ZBOOT_UART16550 directly. and then
sending the relative patches to Ralf.
Tested-by: Manuel Lauss <[email protected]>
Tested-by: Alexander Clouter <[email protected]>
Signed-off-by: Wu Zhangjin <[email protected]>
Signed-off-by: Ralf Baechle <[email protected]>
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