i.MX: Add provisions to boot from IRAM ...

This commit add a very basic code to allow Barebox to be booted from
IRAM. Given that the amount of IRAM on most i.MX variants is
insufficient to contain a copy of Barebox with any reasonable degree
of functionality this code uses IRAM only as a temporary location and
eventually bootstraps from DRAM. But the presense of the intermediate
IRAM-only stage allows to add provisions to test the area of DRAM that
Barebox would be using to facilitate various testing scenarious.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Makefile.lib: Make 'check_file_size' more flexible ...

Make 'check_file_size' more flexible by not hardcoding the file whose
size is going to be checked to '$@'. This way it is possible to use
this subroutine to check the size of files other than the target of
the rule.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Distil common clock ungating code ...

Move all of the common clock ungating code in early UART
initialization into a dedicated subroutine that can be shared by all
of the users.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX51: babbage: Implement CONFIG_DEBUG_LL ...

Implement bits of configuraion needed to configure early debug output
support.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Convert i.MX51 and i.MX6 to use 'imx*_uart_setup_ll' ...

NOTE: Boards 'karo-tx25' and 'tqma53' can benefit from this
refactoring as well, but they were not converted because of the lack
of i.MX25 or i.MX53 based hardware to test on.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Convert PUTC_LL to use IOMEM ...

Convert PUTC_LL to use IOMEM instead of explicit casting to 'void *',
since the former seem to be more appropriate to the situation.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Add UART init functions for DEBUG_LL ...

It appears that all i.MX51 and i.MX6 based boards that support early
debug output inevitably do exactly the same thing with the registers
of the UART peripheral. So to avoid code duplication three new
subroutines are introduced:

  - imx_uart_setup_ll() that allows user to perform aforementioned
    "same thing" on any arbitrary UART at 'uartbase' and clocked at
    'refclock' Hz.

  - imx6_uart_setup_ll() and imx5_uart_setup_ll() that do those
    actions assuming UART to be the one specified in configuration and
    'refclock' to be equal to what it is when SoC comes out of reset.

NOTE: Please note that 'imx*_uart_setup_ll' functions do add a slight
difference in behaviour by dropping the initialization of ONEMS and
UESC registers since those do not seem to be needed for early UART
functionality

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Add baud rate calculation convenience functions ...

Add two functions to calculate values for UBMR and UBIR
registers. This way both early serial initalization code and
serial_imx.c can use them and not duplicate the code.

Singed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: serial: Add constants for UART clock divisor ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i.MX: Move UART definitions into a separate file ...

Move UART definitions into a separate file to avoid redefinition in
<mach/debug_ll.h> and magical constants in low level UART
initialization code.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX5: Add missing CONFIG_ prefix in test ...

The variable name misses a CONFIG_ prefix to work as expected.

Fixes: 05a1e4b ARM: i.MX5: Do not register fixed clocks twice

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/of-device-id'

Merge branch 'for-next/mvebu'

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

Merge branch 'for-next/imx'

Merge branch 'for-next/dts'

Merge branch 'for-next/defer'

dts: update to v4.1-rc1 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Release v2015.05.0 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Do not double remove phy device ...

This fixes: 80264a8 driver: Call bus->remove instead of driver->remove

On mvebu it happens that:

Upon device shutdown, when iterating through the active device list,
the phy0 device is removed before mdio-mvebu. Then, when the mdio bus
device is removed, the phy0 device is removed again, here:

mdio_bus_remove(on mdio-mvebu)
  mvebu_mdio_remove
    mdiobus_unregister
      unregister_device
        mdio_bus_remove(on phy0)

Fix this by setting the mdio busses phy_map[phy->addr] to NULL when
unregistering the phy device, so that mdiobus_unregister no longer
finds a valid phy_device when iterating over the busses device list.

Reported-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>

Documentation: mips: fix tplink-mr3020 instruction ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: tplink-mr3020: enable nmon ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: mach-ath79: debug_ll.h: add assembler routines ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: debug_ll_ns16550.h: drop _ns16550 suffix ...

This commit makes it possible to have unified debug_ll_*
assembler routines for differrent UART program model.
E.g. we can use debug_ll_putc() routine in common
code without knowledge on exact UART model: ns16550
or ar933x.

Also rename *_check_char -> *_tstc.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: tplink-mr3020: enable PBL and compression ...

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

setenv: Be more informative when device parameter setting fails ...

When setting a device parameter fails not only the error code
is of interest, but also what the parameter name is, what the
device name is and whether a device was found for this name.
Add this information to the error message.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usb: increase USB_CNTL_TIMEOUT to match linux ...

USB requests should be processed within a timeframe of 5s.
The linux kernel also uses this timeout value for the control packets.

For the musb the increase in timeout helps successfully probing USB devices
(at least on one test hardware), but on the other hand doesn't slow down the
system, if there are no devices, i.e. the timeout never hits. That means,
that the USB core correctly aborts instead of timing out.
Why and how the 100ms was chosen in the first place, can not be deduced from
the git history, just that it seems to work fine for most boards.

Change USB_CNTL_TIMEOUT to 5000ms and replace all occurences of
	`USB_CNTL_TIMEOUT * x`
with just
	`USB_CNTL_TIMEOUT`,
as the timeout is now large enough without it.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: phy: Do not double remove phy device ...

This fixes: 80264a8 driver: Call bus->remove instead of driver->remove

On mvebu it happens that:

Upon device shutdown, when iterating through the active device list,
the phy0 device is removed before mdio-mvebu. Then, when the mdio bus
device is removed, the phy0 device is removed again, here:

mdio_bus_remove(on mdio-mvebu)
  mvebu_mdio_remove
    mdiobus_unregister
      unregister_device
        mdio_bus_remove(on phy0)

Fix this by setting the mdio busses phy_map[phy->addr] to NULL when
unregistering the phy device, so that mdiobus_unregister no longer
finds a valid phy_device when iterating over the busses device list.

Reported-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: of_mtd_fixup(): fix given DT not the default one ...

We have to start searching for the mtd node starting in the given root node not
the defaukt (= barebox internal) one. This means the internal DT is always
fixed up. This leads to booting not fixed up DT when using external DTs.

This patch fixes the problem.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>