linux-stable.git/arch/powerpc/boot, branch linux-5.0.y

powerpc/boot: Fix missing check of lseek() return value

2019-05-31T13:44:55+00:00

[ Upstream commit 5d085ec04a000fefb5182d3b03ee46ca96d8389b ]

This is detected by Coverity scan: CID: 1440481

Signed-off-by: Bo YU 
Signed-off-by: Michael Ellerman 
Signed-off-by: Sasha Levin

Merge tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2018-12-29T20:03:17+00:00

Pull Kbuild updates from Masahiro Yamada:
 "Kbuild core:
   - remove unneeded $(call cc-option,...) switches
   - consolidate Clang compiler flags into CLANG_FLAGS
   - announce the deprecation of SUBDIRS
   - fix single target build for external module
   - simplify the dependencies of 'prepare' stage targets
   - allow fixdep to directly write to .*.cmd files
   - simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
   - change if_changed_rule to accept multi-line recipe
   - move .SECONDARY special target to scripts/Kbuild.include
   - remove redundant 'set -e'
   - improve parallel execution for CONFIG_HEADERS_CHECK
   - misc cleanups

  Treewide fixes and cleanups
   - set Clang flags correctly for PowerPC boot images
   - fix UML build error with CONFIG_GCC_PLUGINS
   - remove unneeded patterns from .gitignore files
   - refactor firmware/Makefile
   - remove unneeded rules for *offsets.s
   - avoid unneeded regeneration of intermediate .s files
   - clean up ./Kbuild

  Modpost:
   - remove unused -M, -K options
   - fix false positive warnings about section mismatch
   - use simple devtable lookup instead of linker magic
   - misc cleanups

  Coccinelle:
   - relax boolinit.cocci checks for overall consistency
   - fix warning messages of boolinit.cocci

  Other tools:
   - improve -dirty check of scripts/setlocalversion
   - add a tool to generate compile_commands.json from .*.cmd files"

* tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
  kbuild: remove unused cmd_gentimeconst
  kbuild: remove $(obj)/ prefixes in ./Kbuild
  treewide: add intermediate .s files to targets
  treewide: remove explicit rules for *offsets.s
  firmware: refactor firmware/Makefile
  firmware: remove unnecessary patterns from .gitignore
  scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
  um: remove unused filechk_gen_header in Makefile
  scripts: add a tool to produce a compile_commands.json file
  kbuild: add -Werror=implicit-int flag unconditionally
  kbuild: add -Werror=strict-prototypes flag unconditionally
  kbuild: add -fno-PIE flag unconditionally
  scripts: coccinelle: Correct warning message
  scripts: coccinelle: only suggest true/false in files that already use them
  kbuild: handle part-of-module correctly for *.ll and *.symtypes
  kbuild: refactor part-of-module
  kbuild: refactor quiet_modtag
  kbuild: remove redundant quiet_modtag for $(obj-m)
  kbuild: refactor Makefile.asm-generic
  user/Makefile: Fix typo and capitalization in comment section
  ...

Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next

2018-12-24T03:14:45+00:00

Freescale updates from Scott:

"Highlights include elimination of legacy clock bindings use from dts
 files, an 83xx watchdog handler, fixes to old dts interrupt errors, and
 some minor cleanup."

powerpc/zImage: Also check for stdout-path

2018-12-22T10:47:23+00:00

The /chosen/linux,stdout-path is "deprecated" in favour of
/chosen/stdout-path so we should be checking for both.

Signed-off-by: Oliver O'Halloran 
Signed-off-by: Michael Ellerman

powerpc/dts/fsl: Fix dtc-flagged interrupt errors

2018-12-22T03:37:05+00:00

mpc8641_hpcn was updated to 4-cell interrupt specifiers, but
PCI interrupt-map was not updated.  It was also missing #interrupt-cells
on the outer PCI buses.

p1020rdb-pc was updated to 4-cell interrupt specifiers, but
the ethernet-phy nodes weren't updated.

mpc832x_rdb had an invalid "interrupts = <0>" on the ethernet-phy nodes.
Besides being the wrong number of cells, 0 is not a valid IPIC interrupt
according to ipic.c.  Presumably it was meant to indicate that these
PHYs are not connected to an interrupt.

Signed-off-by: Scott Wood

powerpc/fsl: Use new clockgen binding

2018-12-22T02:58:34+00:00

The driver retains compatibility with old device trees, but we don't
want the old nodes lying around to be copied, or used as a reference
(some of the mux options are incorrect), or even just being clutter.

Signed-off-by: Scott Wood 
Signed-off-by: Tang Yuantian 
[scottwood: removed sysclk node added by Andy]
Signed-off-by: Scott Wood

powerpc/44x/bamboo: Fix PCI range

2018-12-20T11:21:20+00:00

The bamboo dts has a bug: it uses a non-naturally aligned range
for PCI memory space. This isnt' supported by the code, thus
causing PCI to break on this system.

This is due to the fact that while the chip memory map has 1G
reserved for PCI memory, it's only 512M aligned. The code doesn't
know how to split that into 2 different PMMs and fails, so limit
the region to 512M.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Michael Ellerman

powerpc/boot: Fix build failures with -j 1

2018-12-06T05:10:15+00:00

In commit 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to
wrapper") we added a dependency to serial.c on autoconf.h:

  $(obj)/serial.c: $(obj)/autoconf.h

This works when building in-tree (ie. with KBUILD_OUTPUT unset)
because the obj tree is the src tree.

But when building with eg. O=build and -j 1 the build fails:

  gcc ... -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o arch/powerpc/boot/serial.c
  gcc: error: arch/powerpc/boot/serial.c: No such file or directory

Why this is only happening with -j 1 is not clear, when building with
-j greater than 1 somehow we decide to look for serial.c in the src
tree (../), eg:

  gcc -I../arch/powerpc/boot -c -o arch/powerpc/boot/serial.o ../arch/powerpc/boot/serial.c

Regardless we shouldn't be specifying a dependency on serial.c in the
build tree, we want to add a dependency to the version in $(srctree)
so fix the rule to say that.

Fixes: 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper")
Tested-by: Daniel Axtens 
Signed-off-by: Michael Ellerman

powerpc: Fix COFF zImage booting on old powermacs

2018-11-26T23:55:11+00:00

Commit 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper
as a relocatable ET_DYN", 2011-04-12) changed the procedure descriptor
at the start of crt0.S to have a hard-coded start address of 0x500000
rather than a reference to _zimage_start, presumably because having
a reference to a symbol introduced a relocation which is awkward to
handle in a position-independent executable.  Unfortunately, what is
at 0x500000 in the COFF image is not the first instruction, but the
procedure descriptor itself, that is, a word containing 0x500000,
which is not a valid instruction.  Hence, booting a COFF zImage
results in a "DEFAULT CATCH!, code=FFF00700" message from Open
Firmware.

This fixes the problem by (a) putting the procedure descriptor in the
data section and (b) adding a branch to _zimage_start as the first
instruction in the program.

Fixes: 6975a783d7b4 ("powerpc/boot: Allow building the zImage wrapper as a relocatable ET_DYN")
Signed-off-by: Paul Mackerras 
Signed-off-by: Michael Ellerman

powerpc/boot: Set target when cross-compiling for clang

2018-11-13T23:21:23+00:00

Clang needs to be told which target it is building for when cross
compiling.

Link: https://github.com/ClangBuiltLinux/linux/issues/259
Signed-off-by: Joel Stanley 
Tested-by: Daniel Axtens  # powerpc 64-bit BE
Acked-by: Michael Ellerman 
Reviewed-by: Nick Desaulniers 
Signed-off-by: Masahiro Yamada