Breaking here dropped us to the default code which always sends a SIGILL
to the current process, no matter what the CU2 notifier says.

[Ralf: Currently this only hurts on Cavium and possibly some out of tree
platforms.]
Signed-off-by: NJesper Nilsson <jesper@jni.nu>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1391/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

When trying to netboot a Linksys WRT54GS WLAN router, the bootup fails,
because of following error message:

...
[    0.424000] b44: b44.c:v2.0
[    0.424000] b44: Invalid MAC address found in EEPROM
[    0.432000] b44 ssb0:1: Problem fetching invariants of chip,aborting
[    0.436000] b44: probe of ssb0:1 failed with error -22
...

The router uses a CFE bootloader, but most of the needed environment
variables for network card initialization, are not available from CFE
via printenv and even though not via cfe_getenv().
The required environment variables are saved in a special partition
in flash memory. The attached patch implement nvram_getenv and enables
bootup via NFS root on my router.

Most of the patch is extracted from the OpenWrt subversion repository and
stripped down and cleaned up to just fix this issue.

[Ralf: sorted out header file inclusions.  Lots of unneded headers and such
that should have been included.]
Signed-off-by: NWaldemar Brodkorb <wbx@openadk.org>
Reviewed-by: NPhil Sutter <phil@nwl.cc>
To: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/1359/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch declare the rtc device present on systems with clock compatible
with the mc146818 and handled by rtc-cmos.  Introduce a new Kconfig entry
because there are some systems without rtc_cmos compatible clock.
Signed-off-by: NArnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Cc: aba@not.so.argh.org
Patchwork: http://patchwork.linux-mips.org/patch/1320/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The fragile MT sys_sched_setaffinity wrapper needs its regular dose of
fixes.
Nose-poked-at-pile-o-crap-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

When exiting from loongson2_exit(), we need to reset the counter
register too, this patch adds a function reset_counters() to do it, by
the way, this function will be shared by Perf.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1199/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Split the low-level sleepcode into per-cpu functions instead of
relying on compile-time-defined cpu type.
Signed-off-by: NManuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1281/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch adds an inline function in_module() to check which space the
instruction pointer in, kernel space or module space.

Note:  This will not work when the kernel space and module space are the
same. If they are the same, we need to modify scripts/recordmcount.pl,
ftrace_make_nop/call() and the other related parts to ensure the
enabling/disabling of the calling site to _mcount is right for both
kernel and module.

[Ralf: It also is still incorrect for some 64-bit kernels.]
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1232/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Cleans up comments and ftrace_get_parent_addr() of function graph tracer.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1231/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

With the help of uasm this patch encodes the instructions of the dynamic
function tracer in ftrace_dyn_arch_init() when initializing it.

As a result we can remove the dynamic encoding of instructions in
ftrace_make_nop()/call(), ftrace_enable_ftrace_graph_caller() and remove
the macro jump_insn_encode() and at last this reduce the overhead of
dynamic Function Tracer.  This also is cleaner.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1230/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch adds some cleanups of the instructions:
  o use macros instead of magic numbers
  o use macros instead of variables to reduce some overhead
  o add new macro for the jal instruction
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1229/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

For 32-bit kernel the -mmcount-ra-address option of gcc 4.5 emits one
extra instruction before calling to _mcount so we need to use a different
"b 1f" for it.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1228/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

As documented in the GCC 4.5 docs [1] -mmcount-ra-address uses register
$12 to pass the stack offset of the return address to the _mcount function.
On 64-bit kernels $12 is t0 but in 32-bit kernels it is t4 so we need to
use $12 instead of t0 here to be correct for both kernel types.

[1] GCC documentation: MIPS Options
http://gcc.gnu.org/onlinedocs/gcc/MIPS-Options.htmlSigned-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1227/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1225/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1226/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Cc: David Daney <david.s.daney@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/1224/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The return value of gpio_to_irq() is not a pointer but an integer.
Signed-off-by: NYoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1280/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Atsushi Nemoto <anemo@mba.ocn.ne.jp> spotted that this had been incorrectly
removed in a previous patch
Signed-off-by: NChris Dearman <chris@mips.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1213/Tested-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The function _wrmsr() called by divil_lbar_disable()/enable() should be
called with the offset as the argument.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Zhang Le <r0bertz@gentoo.org>
Patchwork: http://patchwork.linux-mips.org/patch/1252/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: Hu Hongbing <huhb@lemote.com>
Patchwork: http://patchwork.linux-mips.org/patch/1251/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Add several missing RDMSRs for IDE and USB are missing to avoid the
agressive modification of the high 32 bits of the MSR.

Without this patch some usb devices may fail after printing "reset ehci
host ....." when reading the partition information.
Signed-off-by: NHu Hongbing <huhb@lemote.com>
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: Hu Hongbing <huhb@lemote.com>
Patchwork: http://patchwork.linux-mips.org/patch/1250/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This fixes a typo on the AR7_RESET_PERIPHERAL define.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1247/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

PORT_AR7 has the correct TRIG flag (UART_FCR_R_TRIG_00) as well as
UART_CAP_AFE being set. This fixes UART on TNETD7300 revision 0x02,
which would otherwise mangle some characters, no side effects on
other revisions.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1246/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

GCC's __builtin_prefetch() was introduced a long time ago, all
supported GCC versions have it.  Lets do what the big boys up in
linux/prefetch.h do, except we use '1' as the third parameter to
provoke 'PREF 0,...'  and 'PREF 1,...' instead of other prefetch
hints.

This allows for better code generation.  In theory the existing
embedded asm could be optimized, but the compiler has these builtins,
so there is really no point.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1235/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

For the simulator, fake a slow clock to get fast output.

In prom_putchar we have to mask the value so the simulator doesn't
ASSERT when printing non-ASCII characters.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1255/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Get rid of early_serial_setup, we use CONFIG_EARLY_PRINTK instead.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1254/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

ar7_regiser_devices needs ar7_clocks_init to have been called first,
however clock.o is currently linked later due to its order in the Makefile,
therefore ar7_clocks_init always gets called later than ar7_register_devices
because both have the same initcall level. Fix this by moving
ar7_register_devices to the right initcall level.
Reported-by: NMichael J. Evans <mjevans1983@gmail.com>
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1212/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Instead of doing yet another switch/case on the chip_id, use existing
inline function to set the watchdog base address.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1211/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This is too generic a name, so prefix it with BCM63XX_ to avoid potential
namespace clashes when including <asm/gpio.h>.
Signed-off-by: NFlorian Fainelli <ffainelli@freebox.fr>
To:     linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1171/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Updates the 4G Systems MTX-1 defconfig, and remove systems unavailable
on this platform.  Changes include:

- built-in MTD char/block support
- GPIO sysfs support
- MTX-1 watchdog driver
- I2C over GPIO driver as a module
- SquashFS support
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1168/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Update Broadcom BCM47xx defconfig with:

- tiny RCU
- BCM47xx watchdog driver
- b43/b43legacy wireless as modules
- SSB Gigabit Ethernet driver
- disabled IRDA

6igned-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1167/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This updates the Mikrotik RB532 defconfig with:

- tiny RCU
- RB532 input buttons driver
- RB532 LED driver
- RC32434 watchdog driver
- GPIO sysfs support
- Wireless support
- SquashFS support
- more LED triggers
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1166/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Update Texas Instruments AR7 defconfig with:

- tiny RCU
- LEDs GPIO
- disable SSB
- enable zboot support
- enable GPIO sysfs support
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1165/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Removes some out-of-date comments and empty lines.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1204/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The _EXL, _KERNEL etc. bits are in the performance control register so
use _PERFCTRL prefix instead of _PERFCNT.  While at it make the macro
more readable, use _ENABLE instead of _INT_EN suffix to describe the
interrupt enable bit.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1203/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1202/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1201/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Unified macro for counter0 and counter1 to set the event in the control
register.  This will be needed by Perf.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1200/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The "nofpu" and "nodsp" kernel command line options currently do not
affect CPUs that are brought online later in the boot process or
hotplugged at runtime.  It is desirable to apply the nofpu/nodsp options
to all CPUs in the system, so that surprising results are not seen when
a process migrates from one CPU to another.

[Ralf: Moved definitions of mips_fpu_disabled, fpu_disable,
mips_dsp_disabled and dsp_disable from setup.c to cpu-probe.c to allow
making mips_fpu_disabled and mips_dsp_disabled static.]
Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/1169/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Modifications to the boot memory allocation structures to make them easier
to read and maintain. Note that this will not pass checkpatch because
it wants a structure element initializer to be enclosed in a
do {...} while(...), which is obvious nonsensical.
Signed-off-by: NDavid VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1207/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>