Resetting these SoCs requires no real magic. The code is straight forward.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4891/

All of the Ralink Wifi SoC currently supported by this series share the same
interrupt controller (INTC).
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4890/

Before we start adding the platform code we add the common include files.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4893/

Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: devicetree-discuss@lists.ozlabs.org

The current code uses multiple if statements for
demultiplexing the different interrupt sources.
Additionally, the MISC interrupt controller has
32 interrupt sources and the current code does not
handles all of them.

Get rid of the if statements and process all interrupt
sources in a loop to fix these issues.
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4874/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Make ath79_gpio_function_{en,dis}able to be wrappers
around ath79_gpio_function_setup.
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4871/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

GPIO function selection is not working on the AR934x
SoCs because the offset of the function selection
register is different on those.

Add a helper routine which returns the correct
register address based on the SoC type, and use
that in the 'ath79_gpio_function_*' routines.
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4870/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Add new clocksource that uses the counter present on the MIPS
Global Interrupt Controller.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4681/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Simplify the DSP macros for vanilla (non-microMIPS) kernels and
toolchains that do not support the DSP ASEs.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4687/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Add macros to support the DSP ASE with microMIPS kernels when the
toolchain does not have support.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4686/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Newer toolchains support the DSP and DSP Rev2 instructions. This patch
performs a check for that support and adds compiler and assembler
flags for only the files that need use those instructions.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Acked-by: NFlorian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4752/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4682/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Clean up standard header text and remove unused #define.
Signed-off-by: NSteven J. Hill <sjhill@mips.com>
Patchwork: http://patchwork.linux-mips.org/patch/4703/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

On a multi-chip XLP board, each node can have 4 PCIe links. Update
XLP PCI code to initialize PCIe on all the nodes.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4803/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

On multi-chip boards, the first core on slave SoCs may take much
more time to wakeup. Add code to wait for the core to come up before
proceeding with the rest of the boot up.

Update xlp_wakeup_core to also skip the boot node and the boot CPU
initialization which is already complete.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4783/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Doing calibrate delay on a hardware thread will be inaccurate since
it depends on the load on other threads in the core. It will also
slow down the boot process when done for 128 hardware threads. Switch
to a pre-computed loops per jiffy based on the core frequency. The
value is computed based on the core frequency and roughly matches the
value calculated by calibrate_delay().
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4791/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

TLB and COP0 hazards are handled in hardware for Netlogic XLR/XLS
SoCs. Update hazards.h to pick more optimal set of definitions when
compiling for XLR/XLS.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4788/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Reading PCI extended register at 0x255 on a bridge will hang if there
is no device connected on the link. Make PCI read routine skip this
register.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4789/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

The XLR/XLS/XLP PIC has a 8 countdown timers which run at the PIC
frequencey. One of these can be used as a clocksource to provide
timestamps that is common across cores. This can be used in place
of the count/compare clocksource which is per-CPU.

On XLR/XLS PIC registers are 32-bit, so we just use the lower 32-bits
of the PIC counter. On XLP, the whole 64-bit can be used.

Provide common macros and functions for PIC timer registers on XLR/XLS
and XLP, and use them to register a PIC clocksource.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4786/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Since we now use r4k cache code for Netlogic XLP, it is
better to split L1 icache among the active threads, so that
threads won't step on each other while flushing icache.

The L1 dcache is already split among the threads in the core.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4787/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Rename function xlp_enable_pci_bswap() to xlp_config_pci_bswap(), which
is a better description for its functionality.  When compiled in
big-endian mode, xlp_config_pci_bswap() will configure the PCIe links
to byteswap.  In little-endian mode, no swap configuration is needed
for the PCIe controller, and the function is empty.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4802/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Provide functions ack_c0_eirr(), set_c0_eimr(), clear_c0_eimr()
and read_c0_eirr_and_eimr() that do the EIMR and EIRR operations
and update the interrupt handling code to use these functions.
Also, use the EIMR register functions to mask interrupts in the
irq code.

The 64-bit interrupt request and mask registers (EIRR and EIMR) are
accessed when the interrupts are off, and the common operations are
to set or clear a bit in these registers. Using the 64-bit c0 access
functions for these operations is not optimal in 32-bit, because it
will disable/restore interrupts and split/join the 64-bit value during
each register access.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4790/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Add support for XLS6xx CPUs to the Fast Message Network (FMN)
configuration.
Signed-off-by: NJayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4785/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

This code makes the irqs used by the EIU loadable from the DT. Additionally we
add a helper that allows the pinctrl layer to map external irqs to real irq
numbers.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4818/

We need to make sure that the reset gpio is available and also set a sane
default state.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4817/

Explicitly enable the clock gate of the internal GPHYs found on xrx200.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4816/

The Lantiq DSL SoCs have an internal networking processor. Add code to read
the static clock rate.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4815/

"nodes" is written with a single "s"
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4814/

Make sure 24KEc is properly identified inside /proc/cpuinfo
Signed-off-by: NJohn Crispin <blogic@openwrt.org>

An SoC normally do not define path variables for board_rev and
board_type and the Broadcom SDK also uses the nvram values without a
prefix in such cases. Do the same to fill these sprom attributes from
nvram and do not leave them empty, because brcmsmac do not like this.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4679/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

The kernel is loaded to 0x80001000 so there is some space left for the
exception handlers and the kernel do not have to reserve some extra
space for them.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4747/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

All the boot loaders I have seen are booting the kernel in raw mode by
default. CFE seems to support elf kernel images too, but the default
case is raw for the devices I know of. Select this option to make the
kernel boot on most of the devices with the default options.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4746/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Some nvram values on some devices have a newline character at the end
of the value, that caused read errors. Trim the string before reading
the number.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4745/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

The nvram functions are exported and used by some normal drivers. To
prevent name clashes with ofter parts of the kernel code add a bcm47xx_
prefix in front of the function names and the header file name.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4744/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

The old code just worked for nvram with a size of 0x8000 bytes. This
patch adds support for reading nvram from partitions of 0xF000 and
0x10000 bytes.

There is just 32KB space for the nvram, but most devices do not use the
full size and this code reads the first 32KB in that case and prints a
warning.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4743/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4742/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4741/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

This makes it possible to handle the case of not being able to read the
nvram ram. This could happen when the code searching for the specific
flash chip have not run jet.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4740/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Instead of using our own error codes use some common codes.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4739/Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Also check if parallel flash is present at all before accessing it and
add support for serial flash on BCMA bus.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4738/Signed-off-by: NJohn Crispin <blogic@openwrt.org>