Adds basic platform devices for Loongson 1B, including serial port,
ethernet, USB, RTC and interrupt handler.

The Loongson 1B UART is compatible with NS16550A, the Loongson 1B GMAC is
built around a Synopsys IP Core.

Use normal instead of enhanced descriptors.

Thanks to Giuseppe for updating the normal descriptor in stmmac driver.
Thanks to Zhao Zhang for implementing the RTC driver.
Signed-off-by: NKelvin Cheung <keguang.zhang@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: zhzhl555@gmail.com
Cc: Kelvin Cheung <keguang.zhang@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/4133/
Patchwork: https://patchwork.linux-mips.org/patch/4134/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Loongson 1B is a 32-bit SoC designed by Institute of Computing Technology
(ICT) and the Chinese Academy of Sciences (CAS), which implements the
MIPS32 release 2 instruction set.

[ralf@linux-mips.org: But which is not strictly a MIPS32 compliant device
which also is why it identifies itself with the Legacy Vendor ID in the
PrID register.  When applying the patch I shoveled some code around to
keep things in alphabetical order and avoid forward declarations.]
Signed-off-by: NKelvin Cheung <keguang.zhang@gmail.com>
Cc: To: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: zhzhl555@gmail.com
Cc: Kelvin Cheung <keguang.zhang@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/3976/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fixups are executed once the pci-device is found which is during boot
process so __init seems fine as long as the platform does not support
hotplug.
However it is possible to remove the PCI bus at run time and have it
rediscovered again via "echo 1 > /sys/bus/pci/rescan" and this will call
the fixups again.

[ralf@linux-mips.org: Made piixirqmap[] in malta_piix_func0_fixup()
__initdata.]
Signed-off-by: NSebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: linux-mips@linux-mips.org
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Commit: 37778088 [bug.h: need linux/kernel.h
for TAINT_WARN.] breaks all MIPS builds.

  CC      arch/mips/kernel/machine_kexec.o
In file included from include/linux/kernel.h:20:0,
                 from include/asm-generic/bug.h:35,
                 from /home/yuasa/src/linux/kernel/git/linux-2.6/arch/mips/include/asm/bug.h:41,
                 from /home/yuasa/src/linux/kernel/git/linux-2.6/arch/mips/include/asm/bitops.h:20,
                 from include/linux/bitops.h:22,
                 from include/linux/signal.h:38,
                 from include/linux/elfcore.h:5,
                 from include/linux/kexec.h:60,
                 from arch/mips/kernel/machine_kexec.c:9:
include/linux/log2.h: In function '__ilog2_u32':
include/linux/log2.h:34:2: error: implicit declaration of function 'fls' [-Werror=implicit-function-declaration]
include/linux/log2.h: In function '__ilog2_u64':
include/linux/log2.h:42:2: error: implicit declaration of function 'fls64' [-Werror=implicit-function-declaration]
include/linux/log2.h: In function '__roundup_pow_of_two':
include/linux/log2.h:63:2: error: implicit declaration of function 'fls_long' [-Werror=implicit-function-declaration]
In file included from include/linux/bitops.h:22:0,
                 from include/linux/signal.h:38,
                 from include/linux/elfcore.h:5,
                 from include/linux/kexec.h:60,
                 from arch/mips/kernel/machine_kexec.c:9:
/home/yuasa/src/linux/kernel/git/linux-2.6/arch/mips/include/asm/bitops.h: At top level:
/home/yuasa/src/linux/kernel/git/linux-2.6/arch/mips/include/asm/bitops.h:615:19: error: static declaration of 'fls' follows non-static declaration
include/linux/log2.h:34:9: note: previous implicit declaration of 'fls' was here
In file included from /home/yuasa/src/linux/kernel/git/linux-2.6/arch/mips/include/asm/bitops.h:651:0,
                 from include/linux/bitops.h:22,
                 from include/linux/signal.h:38,
                 from include/linux/elfcore.h:5,
                 from include/linux/kexec.h:60,
                 from arch/mips/kernel/machine_kexec.c:9:
include/asm-generic/bitops/fls64.h:18:28: error: static declaration of 'fls64' follows non-static declaration
include/linux/log2.h:42:9: note: previous implicit declaration of 'fls64' was here
In file included from include/linux/signal.h:38:0,
                 from include/linux/elfcore.h:5,
                 from include/linux/kexec.h:60,
                 from arch/mips/kernel/machine_kexec.c:9:
include/linux/bitops.h:160:24: error: conflicting types for 'fls_long'
include/linux/log2.h:63:16: note: previous implicit declaration of 'fls_long' was here
cc1: all warnings being treated as errors

make[2]: *** [arch/mips/kernel/machine_kexec.o] Error 1
Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: yuasa@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Linuxppc-dev <linuxppc-dev@ozlabs.org>
Cc: Linux MIPS Mailing List <linux-mips@linux-mips.org>
Cc: Linux-sh list <linux-sh@vger.kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Patchwork: https://patchwork.linux-mips.org/patch/4000/Tested-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Since we have delayed irq enabling to ->smp_finish()
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Just to catch a potential issue.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3852/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

To prevent a problem as commit 5fbd036b [sched: Cleanup cpu_active madness]
and commit 2baab4e9 [sched: Fix select_fallback_rq() vs cpu_active/cpu_online]
try to resolve, move set_cpu_online() to the brought up CPU and with irq
disabled.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3851/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

We have move irq enable to ->smp_finish. Place ->smp_finish() a little
late to prepare for move set_cpu_online() into start_secondary.
And it's not necessary to call cpu_set(cpu, cpu_callin_map) and
synchronise_count_slave() with irq enabled.
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3850/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

To prepare for smoothing set_cpu_[active|online]() mess up
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3848/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

To prepare for smoothing set_cpu_[active|online]() mess up
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3847/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

To prepare for smoothing set_cpu_[active|online]() mess up
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3846/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

To prepare for smoothing set_cpu_[active|online]() mess up
Signed-off-by: NYong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: NDavid Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3845/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

When building oprofile as a module for R10000 or R7000 class processors,
E9000 or MIPSxx class cores since 3572a2c3
[MIPS: make oprofile use cp0_perfcount_irq if it is set] an

ERROR: "cp0_compare_irq" [arch/mips/oprofile/oprofile.ko] undefined!

error will happen.  Fixed by exporting cp0_compare_irq.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The IPsec clock bit is 18 and not 17.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: mpm@selenic.com
Cc: herbert@gondor.apana.org.au
Patchwork: https://patchwork.linux-mips.org/patch/3323/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

cc1: warnings being treated as errors
arch/mips/kernel/perf_event_mipsxx.c:166: error: 'counters_per_cpu_to_total' defined but not used
make[2]: *** [arch/mips/kernel/perf_event_mipsxx.o] Error 1
make[2]: *** Waiting for unfinished jobs....

It was first introduced by 82091564 [MIPS:
perf: Add support for 64-bit perf counters.] in 3.2.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: david.daney@cavium.com
Patchwork: https://patchwork.linux-mips.org/patch/3357/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

show_backtrace() was passed a NULL pointer which caused paging
request fail. Set to current task as other architectures (ARM,
etc) do when passed a NULL task pointer.
Signed-off-by: NVincent Wen <vincentwenlinux@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/3524/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NDanny Kukawka <danny.kukawka@bisect.de>
Cc: Danny Kukawka <dkukawka@suse.de>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/3369/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

As long as there is no other non-const variable marked __initdata in the
same compilation unit it doesn't hurt. If there were one however
compilation would fail with

	error: $variablename causes a section type conflict

because a section containing const variables is marked read only and so
cannot contain non-const variables.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: kernel@pengutronix.de
Patchwork: https://patchwork.linux-mips.org/patch/3565/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fix the following build breakage in v3.4-rc1:

  CC      kernel/irq_work.o
In file included from include/linux/irq_work.h:4:0,
                 from kernel/irq_work.c:10:
include/linux/llist.h: In function 'llist_del_all':
include/linux/llist.h:178:2: error: implicit declaration of function 'BUILD_BUG_ON' [-Werror=implicit-function-declaration]
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3568/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NLeonid Yegoshin <yegoshin@mips.com>
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3792/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3883/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

warning: (BCM47XX_BCMA) selects BCMA_DRIVER_PCI_HOSTMODE which has unmet direct dependencies (BCMA_POSSIBLE && BCMA && MIPS && BCMA_HOST_PCI)
warning: (BCM47XX_BCMA) selects BCMA_DRIVER_PCI_HOSTMODE which has unmet direct dependencies (BCMA_POSSIBLE && BCMA && MIPS && BCMA_HOST_PCI)
Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3882/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Extractd from Steven J. Hill's https://patchwork.linux-mips.org/patch/3603/.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Improper alignment can lead to unbootable systems and/or random
crashes.

[ralf@linux-mips.org: This is a lond standing bug since
6eb10bc9 (kernel.org) rsp.
c422a10917f75fd19fa7fe070aaaa23e384dae6f (lmo) [MIPS: Clean up linker script
using new linker script macros.] so dates back to 2.6.32.]
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/3881/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

There are ACPI and SMB devices in the 0x1000..0x1fff address range.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3581/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

[ralf@linux-mips.org: Cosmetic changes; also fixed up r2300_switch.S and
octeon_switch.S which needed similar modifications.]
Signed-off-by: NLeonid Yegoshin <yegoshin@mips.com>
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3784/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This affects certain 4Kc cores.
Signed-off-by: NDouglas Leung <douglas@mips.com>
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3855/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Remove usage of the '__attribute__((alias("...")))' hack that aliased
to integer arrays containing micro-assembled instructions. This hack
breaks when building a microMIPS kernel. It also makes the code much
easier to understand.

[ralf@linux-mips.org: Added back export of the clear_page and copy_page
symbols so certain modules will work again.  Also fixed build with
CONFIG_SIBYTE_DMA_PAGEOPS enabled.]
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3866/Acked-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

It's a bloody bog standard MIPS64R2 core with just a new PrId ID.  Iow
that essentially means Linux just panics because it doesn't know how to
name the core.

[ralf@linux-mips.org: Split original patch into several smaller patches.]
Signed-off-by: NLeonid Yegoshin <yegoshin@mips.com>
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3792/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Commit 37778088 ("bug.h: need linux/kernel.h for TAINT_WARN.") broke
all MIPS builds:

    CC      arch/mips/kernel/machine_kexec.o
  include/linux/log2.h: In function '__ilog2_u32':
  include/linux/log2.h:34:2: error: implicit declaration of function 'fls' [-Werror=implicit-function-declaration]
  include/linux/log2.h: In function '__ilog2_u64':
  include/linux/log2.h:42:2: error: implicit declaration of function 'fls64' [-Werror=implicit-function-declaration]
  ...
Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Tested-by: NJohn Crispin <blogic@openwrt.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NStefan Roese <sr@denx.de>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>

On spear320 device supported mode are:

   * AUTO_NET_SMII_MODE
   * AUTO_NET_MII_MODE
   * AUTO_EXP_MODE
   * SMALL_PRINTERS_MODE
   * EXTENDED_MODE

spear320-evb board is designed for EXTENDED_MODE only, hence it does not
boot correctly in current form where pinctrl part for some devices fail.

Configure and boot the SPEAr320 evaluation board in EXTENDED_MODE.
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>

Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>

   - Correct interrupt bindings for uart, ethernet and pmu.
   - Added interrupt binding for keyboard.
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>

The max limit of con_id is 16 and dev_id is 20. As of now for spear6xx, many clk
ids are exceeding this predefined limit.

This patch is intended to rename clk ids like:
    mux_clk -> _mclk
    gate_clk -> _gclk
    synth_clk -> syn_clk
    ras_gen1_synth_gate_clk -> ras_syn1_gclk
    pll3_48m -> pll3_
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>

The max limit of con_id is 16 and dev_id is 20. As of now for spear3xx, many clk
ids are exceeding this predefined limit.

This patch is intended to rename clk ids like:
    mux_clk -> _mclk
    gate_clk -> _gclk
    synth_clk -> syn_clk
    ras_gen1_synth_gate_clk -> ras_syn1_gclk
    ras_pll3_48m -> ras_pll3_
    pll3_48m -> pll3_
Signed-off-by: NVipul Kumar Samar <vipulkumar.samar@st.com>
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Fix the m32r compile error:

  arch/m32r/boot/compressed/misc.c:31:14: error: static declaration of 'memset' follows non-static declaration
  make[5]: *** [arch/m32r/boot/compressed/misc.o] Error 1
  make[4]: *** [arch/m32r/boot/compressed/vmlinux] Error 2

by removing the static keyword.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix the m32r link error:

    LD      arch/m32r/boot/compressed/vmlinux
  arch/m32r/boot/compressed/misc.o: In function `zlib_updatewindow':
  misc.c:(.text+0x190): undefined reference to `memcpy'
  misc.c:(.text+0x190): relocation truncated to fit: R_M32R_26_PLTREL against undefined symbol `memcpy'
  make[5]: *** [arch/m32r/boot/compressed/vmlinux] Error 1

by adding our own implementation of memcpy().
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit a556bec9 ("m32r: fix arch/m32r/boot/compressed/Makefile")
changed "$(suffix_y)" to "$(suffix-y)", but didn't update any location
where "suffix_y" is set, causing:

  make[5]: *** No rule to make target `arch/m32r/boot/compressed/vmlinux.bin.', needed by `arch/m32r/boot/compressed/piggy.o'.  Stop.
  make[4]: *** [arch/m32r/boot/compressed/vmlinux] Error 2
  make[3]: *** [zImage] Error 2

Correct the other locations to fix this.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>