In old days, the "host-progs" syntax was used for specifying host
programs. It was renamed to the current "hostprogs-y" in 2004.

It is typically useful in scripts/Makefile because it allows Kbuild to
selectively compile host programs based on the kernel configuration.

This commit renames like follows:

  always       ->  always-y
  hostprogs-y  ->  hostprogs

So, scripts/Makefile will look like this:

  always-$(CONFIG_BUILD_BIN2C) += ...
  always-$(CONFIG_KALLSYMS)    += ...
      ...
  hostprogs := $(always-y) $(always-m)

I think this makes more sense because a host program is always a host
program, irrespective of the kernel configuration. We want to specify
which ones to compile by CONFIG options, so always-y will be handier.

The "always", "hostprogs-y", "hostprogs-m" will be kept for backward
compatibility for a while.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

__sanitizer_cov_trace_pc() is not linked in and causing link
failure if KCOV_INSTRUMENT is enabled. Fix this by disabling
instrumentation for compressed image.

Signed-off-by: Jouni Hogander <jouni.hogander@unikie.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: linux-mips@vger.kernel.org

calc_vmlinuz_load_addr.c requires SZ_64K to be defined for alignment
purposes.  It included "../../../../include/linux/sizes.h" to define
that size, however "sizes.h" tries to include <linux/const.h> which
assumes linux system headers.  These may not exist eg. the following
error was encountered when building Linux for OpenWrt under macOS:

In file included from arch/mips/boot/compressed/calc_vmlinuz_load_addr.c:16:
arch/mips/boot/compressed/../../../../include/linux/sizes.h:11:10: fatal error: 'linux/const.h' file not found
         ^~~~~~~~~~

Change makefile to force building on local linux headers instead of
system headers.  Also change eye-watering relative reference in include
file spec.

Thanks to Jo-Philip Wich & Petr Štetiar for assistance in tracking this
down & fixing.

Suggested-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

KEXEC needs the new kernel's load address to be aligned on a page
boundary (see sanity_check_segment_list()), but on MIPS the default
vmlinuz load address is only explicitly aligned to 16 bytes.

Since the largest PAGE_SIZE supported by MIPS kernels is 64KB, increase
the alignment calculated by calc_vmlinuz_load_addr to 64KB.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21131/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <james.hogan@mips.com>
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: <stable@vger.kernel.org> # 2.6.36+

Commit a0f97e06a43c ("kbuild: enable 'make CFLAGS=...' to add
additional options to CC") renamed CFLAGS to KBUILD_CFLAGS.

Commit 222d394d30e7 ("kbuild: enable 'make AFLAGS=...' to add
additional options to AS") renamed AFLAGS to KBUILD_AFLAGS.

Commit 06c5040cdb13 ("kbuild: enable 'make CPPFLAGS=...' to add
additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS.

For some reason, LDFLAGS was not renamed.

Using a well-known variable like LDFLAGS may result in accidental
override of the variable.

Kbuild generally uses KBUILD_ prefixed variables for the internally
appended options, so here is one more conversion to sanitize the
naming convention.

I did not touch Makefiles under tools/ since the tools build system
is a different world.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>

prom_putchar() is used centrally in early printk infrastructure therefore
at least MIPS should agree on the function return type.

[paul.burton@mips.com:
  - Include linux/types.h in asm/setup.h to gain the bool typedef before
    we start include asm/setup.h elsewhere.
  - Include asm/setup.h in all files that use or define prom_putchar().
  - Also standardise on signed rather than unsigned char argument.]

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19842/
Cc: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>

Pull MIPS updates from James Hogan:
 "These are the main MIPS changes for 4.18.

  Rough overview:

   - MAINTAINERS: Add Paul Burton as MIPS co-maintainer

   - Misc: Generic compiler intrinsics, Y2038 improvements, Perf+MT fixes

   - Platform support: Netgear WNR1000 V3, Microsemi Ocelot integrated
     switch, Ingenic watchdog cleanups

  More detailed  summary:

  Maintainers:

   - Add Paul Burton as MIPS co-maintainer, as I soon won't have access
     to much MIPS hardware, nor enough time to properly maintain MIPS on
     my own.

  Miscellaneous:

   - Use generic GCC library routines from lib/
     - Add notrace to generic ucmpdi2 implementation
     - Rename compiler intrinsic selects to GENERIC_LIB_*
     - vmlinuz: Use generic ashldi3

   - y2038: Convert update/read_persistent_clock() to *_clock64()
     - sni: Remove read_persistent_clock()

   - perf: Fix perf with MT counting other threads
     - Probe for per-TC perf counters in cpu-probe.c
     - Use correct VPE ID for VPE tracing

  Minor cleanups:

   - Avoid unneeded built-in.a in DTS dirs

   - sc-debugfs: Re-use kstrtobool_from_user

   - memset.S: Reinstate delay slot indentation

   - VPE: Fix spelling "uneeded" -> "Unneeded"

  Platform support:

  BCM47xx:

   - Add support for Netgear WNR1000 V3

   - firmware: Support small NVRAM partitions

   - Use __initdata for LEDs platform data

  Ingenic:

   - Watchdog driver & platform code improvements:
     - Disable clock after stopping counter
     - Use devm_* functions
     - Drop module remove function
     - Move platform reset code to restart handler in driver
     - JZ4740: Convert watchdog instantiation to DT
     - JZ4780: Fix watchdog DT node
     - qi_lb60_defconfig: Enable watchdog driver

  Microsemi:

   - Ocelot: Add support for integrated switch
     - pcb123: Connect phys to ports"

* tag 'mips_4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits)
  MAINTAINERS: Add Paul Burton as MIPS co-maintainer
  MIPS: ptrace: Make FPU context layout comments match reality
  MIPS: memset.S: Reinstate delay slot indentation
  MIPS: perf: Fix perf with MT counting other threads
  MIPS: perf: Use correct VPE ID when setting up VPE tracing
  MIPS: perf: More robustly probe for the presence of per-tc counters
  MIPS: Probe for MIPS MT perf counters per TC
  MIPS: mscc: Connect phys to ports on ocelot_pcb123
  MIPS: mscc: Add switch to ocelot
  MIPS: JZ4740: Drop old platform reset code
  MIPS: qi_lb60: Enable the jz4740-wdt driver
  MIPS: JZ4780: dts: Fix watchdog node
  MIPS: JZ4740: dts: Add bindings for the jz4740-wdt driver
  watchdog: JZ4740: Drop module remove function
  watchdog: JZ4740: Register a restart handler
  watchdog: JZ4740: Use devm_* functions
  watchdog: JZ4740: Disable clock after stopping counter
  MIPS: VPE: Fix spelling mistake: "uneeded" -> "unneeded"
  MIPS: Re-use kstrtobool_from_user()
  MIPS: Convert update_persistent_clock() to update_persistent_clock64()
  ...

The debug definitions were missing for MACH_JZ4770, resulting in a build
failure when DEBUG_ZBOOT was set.

Since the UART addresses are the same across all Ingenic SoCs, we just
use a #ifdef CONFIG_MACH_INGENIC instead of checking for individual
Ingenic SoCs.

Additionally, I added a #define for the UART0 address in-code and
dropped the <asm/mach-jz4740/base.h> include, for the reason that this
include file is slowly being phased out as the whole platform is being
moved to devicetree.

Fixes: 9be5f3e92ed5 ("MIPS: ingenic: Initial JZ4770 support")
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.16
Patchwork: https://patchwork.linux-mips.org/patch/18957/
Signed-off-by: James Hogan <jhogan@kernel.org>

In preparation for removing some of the MIPS compiler intrinsics from
arch/mips/lib, first update the build of vmlinuz to use the generic
ashldi3 from lib.

Both ashldi3 and bswapsi objects need to be built with different CFLAGS
for inclusion to vmlinuz rather than simply including the object built
for the main kernel image. The objects cannot be built directly from
source, since CONFIG_MODVERSIONS changes cmd_cc_o_c to prevent this.

Split the rule to ship ashldi3 and bswapsi from the relevant source
locations.

These files make no reference to other files in their directory, so the
additional CFLAGS are apparently unnecessary - remove them as well.

Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/19050/
[jhogan@kernel.org: Add if_changed and FORCE to fix build failure when
 arch/mips/boot/compressed/ashldi3.c is already generated but there is
 no .ashldi3.c.cmd file yet]
Signed-off-by: James Hogan <jhogan@kernel.org>