This includes all devices from OpenWrt's "diag" that we support in arch
code (we have entries for in enum bcm47xx_board).
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6301/

So far this adds support for one Netgear model only, but it's designed
and ready to add many more device. We could hopefully import database
from OpenWrt.
Support for SSB is currently disabled, because SSB doesn't implement IRQ
domain yet.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6300/

So far this is mostly just a proof of concept, database consists of a
single device. Creating a nice iterateable array wasn't an option
because devices have different amount of LEDs. And we don't want to
waste memory just because of support for a device with dozens on LEDs.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6299/

The BCM4706 has a problem with the CPU wait instruction. When r4k_wait
or r4k_wait_irqoff is used will just hang and not return from a
msleep(). Removing the cpu_wait functionality is a workaround for this
problem. The BCM4716 does not have this problem.

The BCM4706 SoC uses a MIPS 74K V4.9 CPU.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6288/

This will add the board name to the machine entry in /proc/cpuinfo.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5864/

Fix nvram_read_alpha2 copying too many bytes over the ssb_sprom
structure. Also fix the arguments of the read_macaddr, although the code
was technically not wrong before due to an extra dereference.
Signed-off-by: NIlia Mirkin <imirkin@alum.mit.edu>
Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6211/

This adds support for vectored interrupt which is supported by the SoC
using a MIPS 74K CPU like the BCM4716 and BCM4706.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6290/

Move the possible nvram sizes from the stack into the data segment
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6044/

plat_irq_dispatch() is called from asm code, add asmlinkage.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6043/

The BCM47xx SoCs have a 8250 serial compatible console at address
0x18000300 and an other at 0x18000400. On most devices 0x18000300 is
wired to some pins on the board, we should use that.
This is the smae for the AI (bcma) and the SB (ssb) bus, this is some
offset on the chip common core.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Tested-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5889/

bcm47xx only uses the CFE code for early print to a console, but that
is also possible with a early print serial 8250 driver.

The CFE api init causes hangs somewhere in prom_init_cfe() on some
devices like the Buffalo WHR-HP-G54 and the Asus WL-520GU.
This was reported in https://dev.openwrt.org/ticket/4061 and
https://forum.openwrt.org/viewtopic.php?id=17063

This will remove all the CFE handling code from bcm47xx.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Tested-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5888/

Recently the output of "system type" in  /proc/cpuinfo was changed to
Broadcom BCM4730 (Some sample board), but it is better to just print
the SoC name in the "system type" entry. The board name will be added
in the machine entry later.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5865/

Let BCM47XX_SSB select the appropriate BMIPS CPUs enountered on those
systems.
Signed-off-by: NJonas Gorski <jogo@openwrt.org>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6244/

The Asus WL520GC and WL520GU are based on the BCM5354 and clocked at
200MHz, but they do not have a clkfreq nvram variable set to the
correct value. This adds a workaround for these devices.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5843/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Some BCM5354 SoCs are running at 200MHz, but it is not possible to read
the clock from a register like it is done on some other SoC in ssb and
bcma. These devices should have a clkfreq nvram configuration value set
to 200, read it and set the clock to the correct value.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5842/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The nvram contains some gpio configuration for boards. It is stored in
a gpio<number>=name format e.g.
gpio8=wps_button
gpio4=robo_reset

This patches adds a function to parse these entries, so other driver
can use it.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5841/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Do not print the constant system type "Broadcom BCM47XX" but print the
name of the actual SoC in use and the detected board.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5839/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Detect on which board this code is running based on some nvram
settings. This is needed to start board specific workarounds and
configure the leds and buttons which are on different gpios on every board.

This patches add some boards we have seen, but there are many more.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5840
Patchwork: https://patchwork.linux-mips.org/patch/5855/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

If neither BCM47XX_SSD nor BCM47XX_BCMA is selected, then no
CPU type is available leading to build problems. We fix
this problem by using MIPS32r1 as the default CPU type for
the BCM47XX platform.
Signed-off-by: NMarkos Chandras <markos.chandras@imgtec.com>
Acked-by: NSteven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5618/Signed-off-by: NRalf Baechle <ralf@linux-mips.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>

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>

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Split of from Arend's patch.
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: https://patchwork.linux-mips.org/patch/4759/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The Kconfig items BCM47XX_BCMA and BCM47XX_SSB selected respectively
BCMA_DRIVER_GPIO and SSB_DRIVER_GPIO. These options depend on GPIOLIB
without explicitly selecting it so it results in a warning when GPIOLIB
is not set:

scripts/kconfig/conf --oldconfig Kconfig
warning: (BCM47XX_BCMA) selects BCMA_DRIVER_GPIO ... unmet direct
	dependencies (BCMA_POSSIBLE && BCMA && GPIOLIB)
warning: (BCM47XX_SSB) selects SSB_DRIVER_GPIO ... unmet direct
	dependencies (SSB_POSSIBLE && SSB && GPIOLIB)

which subsequently results in compile errors.
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4759/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The irq signal numbers that are send by the cpu are increased by 2 from
the number programmed into the mips core by bcma.
Return the irq number on which the irqs are send in bcma_core_irq() now.
Signed-off-by: NNathan Hintz <nlhintz@hotmail.com>
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Instated of providing an own GPIO driver use the one provided by ssb and
bcma.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4592Acked-by: NFlorian Fainelli <florian@openwrt.org>

There are bcma based devices like the Linksys E2000 out there, which do
have one ieee80211 core, but no PCIe core and they are using no
prefixes for the sprom. In addition some values like boardtype are
stored without a prefix for the main SoC chip also when they have an
additional PCIe wifi chip with an own boardtype var on some devices.

The Ethernet addresses are now also read out correctly without a prefix
so calling bcm47xx_fill_sprom_ethernet is not needed any more.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4364Signed-off-by: NJohn Crispin <blogic@openwrt.org>

If there is no ieee80211 core on the devices like on the BCM4706 read
out the sprom and the other data without using a prefix.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4361Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Read out the full board data independently of the sprom version. Now we
also get the full boardflags and so on if sromrev is not set and our
code would assume a rev 1 device. When a nvram option is not set
because it is not there this is no problem.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4363Signed-off-by: NJohn Crispin <blogic@openwrt.org>

The memory size is detected by finding a place where it repeats in
memory. Currently we are just checking when the function prom_init is
seen again, but it is better to check for a bigger part of the memory
to decrease the chance of wrong results.

This should fix a problem we saw in OpenWrt, where the detected
available memory decreed on some devices when doing a soft reboot.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4362Signed-off-by: NJohn Crispin <blogic@openwrt.org>

Ignoring the last page when ddr size is 128M. Cached accesses to last
page is causing the processor to prefetch using address above 128M
stepping out of the ddr address space.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4365Signed-off-by: NJohn Crispin <blogic@openwrt.org>

This is a preparing step for adding serial flash support.
Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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>