linux.git/arch/powerpc/boot/wrapper, branch v6.0

powerpc: Fix all occurences of "the the"

2022-05-22T05:59:43+00:00

Rather than waiting for the bots to fix these one-by-one, fix all
occurences of "the the" throughout arch/powerpc.

Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20220518142629.513007-1-mpe@ellerman.id.au

powerpc/boot: Set LC_ALL=C in wrapper script

2021-10-27T11:31:22+00:00

While trying to build a simple Image for ACADIA platform, I got the
following error:

	  WRAP    arch/powerpc/boot/simpleImage.acadia
	INFO: Uncompressed kernel (size 0x6ae7d0) overlaps the address of the wrapper(0x400000)
	INFO: Fixing the link_address of wrapper to (0x700000)
	powerpc64-linux-gnu-ld : mode d'émulation non reconnu : -T
	Émulations prises en charge : elf64ppc elf32ppc elf32ppclinux elf32ppcsim elf64lppc elf32lppc elf32lppclinux elf32lppcsim
	make[1]: *** [arch/powerpc/boot/Makefile:424 : arch/powerpc/boot/simpleImage.acadia] Erreur 1
	make: *** [arch/powerpc/Makefile:285 : simpleImage.acadia] Erreur 2

Trying again with V=1 shows the following command

	powerpc64-linux-gnu-ld -m -T arch/powerpc/boot/zImage.lds -Ttext 0x700000 --no-dynamic-linker -o arch/powerpc/boot/simpleImage.acadia -Map wrapper.map arch/powerpc/boot/fixed-head.o arch/powerpc/boot/simpleboot.o ./zImage.3278022.o arch/powerpc/boot/wrapper.a

The argument of '-m' is missing.

This is due to the wrapper script calling 'objdump -p vmlinux' and
looking for 'file format', whereas the output of objdump is:

	vmlinux:     format de fichier elf32-powerpc

	En-tête de programme:
	    LOAD off    0x00010000 vaddr 0xc0000000 paddr 0x00000000 align 2**16
	         filesz 0x0069e1d4 memsz 0x006c128c flags rwx
	    NOTE off    0x0064591c vaddr 0xc063591c paddr 0x0063591c align 2**2
	         filesz 0x00000054 memsz 0x00000054 flags ---

Add LC_ALL=C at the beginning of the wrapper script in order to get the
output expected by the script:

	vmlinux:     file format elf32-powerpc

	Program Header:
	    LOAD off    0x00010000 vaddr 0xc0000000 paddr 0x00000000 align 2**16
	         filesz 0x0069e1d4 memsz 0x006c128c flags rwx
	    NOTE off    0x0064591c vaddr 0xc063591c paddr 0x0063591c align 2**2
	         filesz 0x00000054 memsz 0x00000054 flags ---

Signed-off-by: Christophe Leroy 
Acked-by: Segher Boessenkool 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/a9ff3bc98035f63b122c051f02dc47c7aed10430.1635256089.git.christophe.leroy@csgroup.eu

powerpc: retire sbc8548 board support

2021-08-26T14:48:11+00:00

The support was for this was mainlined 13 years ago, in v2.6.25
[0e0fffe88767] just around the ppc --> powerpc migration.

I believe the board was introduced a year or two before that, so it
is roughly a 15 year old platform - with the CPU speed and memory size
that was typical for that era.

I haven't had one of these boards for several years, and availability
was discontinued several years before that.

Given that, there is no point in adding a burden to testing coverage
that builds all possible defconfigs, so it makes sense to remove it.

Of course it will remain in the git history forever, for anyone who
happens to find a functional board and wants to tinker with it.

Acked-by: Scott Wood 
Signed-off-by: Paul Gortmaker 
Signed-off-by: Michael Ellerman

powerpc/boot: Add a boot wrapper for Microwatt

2021-06-21T11:16:32+00:00

This allows microwatt's kernel to be built with an embedded device tree.

Load to arch/powerpc/boot/dtbImage.microwatt to 0x500000:

 mw_debug -b fpga stop load arch/powerpc/boot/dtbImage.microwatt 500000 start

Signed-off-by: Joel Stanley 
Signed-off-by: Paul Mackerras 
Reviewed-by: Segher Boessenkool 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/YMwX19wym3kQ7guu@thinks.paulus.ozlabs.org

kbuild: replace LANG=C with LC_ALL=C

2021-05-01T15:43:35+00:00

LANG gives a weak default to each LC_* in case it is not explicitly
defined. LC_ALL, if set, overrides all other LC_* variables.

  LANG  <  LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ...  <  LC_ALL

This is why documentation such as [1] suggests to set LC_ALL in build
scripts to get the deterministic result.

LANG=C is not strong enough to override LC_* that may be set by end
users.

[1]: https://reproducible-builds.org/docs/locales/

Signed-off-by: Masahiro Yamada 
Acked-by: Michael Ellerman  (powerpc)
Reviewed-by: Matthias Maennich 
Acked-by: Matthieu Baerts  (mptcp)
Reviewed-by: Greg Kroah-Hartman

powerpc/boot/wrapper: Add "-z notext" flag to disable diagnostic

2020-11-26T11:05:43+00:00

The "-z notext" flag disables reporting an error if DT_TEXTREL is set.

  ld.lld: error: can't create dynamic relocation R_PPC64_ADDR64 against
    symbol: _start in readonly segment; recompile object files with
    -fPIC or pass '-Wl,-z,notext' to allow text relocations in the
    output
  >>> defined in
  >>> referenced by crt0.o:(.text+0x8) in archive arch/powerpc/boot/wrapper.a

The BFD linker disables this by default (though it's configurable in
current versions). LLD enables this by default. So we add the flag to
keep LLD from emitting the error.

Signed-off-by: Bill Wendling 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201120224034.191382-2-morbo@google.com

powerpc/boot/wrapper: Add "-z rodynamic" when using LLD

2020-11-26T11:05:43+00:00

Normally all read-only sections precede SHF_WRITE sections. .dynamic
and .got have the SHF_WRITE flag; .dynamic probably because of
DT_DEBUG. LLD emits an error when this happens, so use "-z rodynamic"
to mark .dynamic as read-only.

Signed-off-by: Bill Wendling 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20201118223910.2711337-1-morbo@google.com

powerpc: Remove Xilinx PPC405/PPC440 support

2020-05-28T13:24:34+00:00

The latest Xilinx design tools called ISE and EDK has been released in
October 2013. New tool doesn't support any PPC405/PPC440 new designs.
These platforms are no longer supported and tested.

PowerPC 405/440 port is orphan from 2013 by
commit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") and
commit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership")
that's why it is time to remove the support fot these platforms.

Signed-off-by: Michal Simek 
Signed-off-by: Christophe Leroy 
Acked-by: Arnd Bergmann 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu

powerpc/ps3: Add check for otheros image size

2020-05-20T13:39:56+00:00

The ps3's otheros flash loader has a size limit of 16 MiB for the
uncompressed image.  If that limit will be reached output the
flash image file as 'otheros-too-big.bld'.

Signed-off-by: Geoff Levand 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/897c2a59-378e-7c9b-3976-d0a0def90913@infradead.org

powerpc/wrapper: Output linker map file

2020-05-18T14:10:35+00:00

To aid debugging wrapper troubles, output a linker map file
'wrapper.map' when the build is verbose.

Signed-off-by: Geoff Levand 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/fb477f5e91c6b74a1dec98df3cc0a1c91632d94d.1589049250.git.geoff@infradead.org