of: base: Add of_find_node_by_phandle_from ...

Added of_find_node_by_phandle_from() to find nodes by
phandle with a given root node.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: Add for_each_node_by_name_from ...

Added for_each_node_by_name_from() to be able to
pass external root node.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Introduce message logging support ...

This adds a buffer for log messages and a 'dmesg' command to
print the messages. The log buffer is implemented as log objects
rather than a string buffer. This makes it easy to implement
limiting the messages, cleaning the buffer and timestamping
the messages.

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

Documentation: Add some TI AM335x specific documentation ...

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

ARM: am335x: NAND MLO update: always let the user confirm updating ...

Before actually doing something the user should always confirm the
update. Move the question out of the if() block.

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

ARM: am335x Phytec phyCORE: register SPI NOR and NAND update handlers ...

Additionally to the MLO update handlers also register the update
handlers for the regular barebox image.

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

ARM: am335x: Add a NAND update handler for the regular barebox ...

To be able to not only update the MLO in NAND but also the
regular barebox image.
Since this is implemented with help of the corresponding xload
handler this also removes the 'xload' from the Kconfig options
and the filename.

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

ARM: am33xx update SPI NOR: Ask use before flashing ...

Let the user confirm the update process before flashing the new
image.

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

ARM: am33xx update SPI NOR: Check image size before flashing ...

Test if the image fits into the partition before flashing it. Makes
the update process more safe.

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

commands: usb: drop help for force rescan option ...

Signed-off-by: Wjatscheslaw Stoljarski <wjatscheslaw.stoljarski@kiwigrid.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

startup: Don't print multiple lines with pr_info ...

Print the banner with pr_info, but the empty lines before and after
it with printf. This makes the banner show up in the log show up
properly.

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

clock: make get_time_ns() safe to be called without clocksource ...

make it possible to call get_time_ns() before the clocksource
has been registered. Just return 0 in this case which is still
better than crashing the system.

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

clock: Add a variable with the first timestamp after startup ...

For measuring the startup time it's useful to save the first
timestamp after the clocksource has been registered.

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

ARM: am335x_defconfig: Enable USB support ...

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

Documentation: USB: Add description for OTG device ...

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

ARM: dts: Update am335x-bone-common.dtsi ...

Update from current upstream dtsi. This enables the USB control
module.

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

USB: MUSB: Add barebox specific changes ...

This changes the MUSB support from the original Kernel state to
be usable with barebox. Tested on a custom board and the Beaglebone
Black. The host port on the Beaglebone works, the OTG port works
in device mode, but not yet in host mode.

Based on the initial MUSB port from Rolf Evers Fischer.

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

USB: Add MUSB driver from Linux ...

This adds the necessary files from the MUSB driver directly from Linux
3.17-rc5. No changes to the original files have been made so far.

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

ARM: AM33xx: Enable USB and USB phy clocks ...

These are necessary for USB support. To make sure they are actually
enabled when a USB capable barebox is started call the clock enable
function during startup also for the full barebox, not only the MLO.

Signed-off-by: Rolf Evers-Fischer <rolf.evers.fischer@delphi.com>

USB: gadget: allow multiple udc drivers ...

Since the MUSB driver will have it's own directory the Kconfig
entries won't be in drivers/usb/gadget/Kconfig. This is incompatible
with the current 'choice' approach for udc drivers. The udc drivers
do not implement the global usb_gadget_poll() anymore, so we can
drop the choice and allow multiple gadget drivers.

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

USB: gadget: put poller into core ...

Instead of letting each driver implement usb_gadget_poll directly
implement this function in the core which then calls into the
drivers.

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

ARM: AM33xx: Add AFI GF board support ...

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

ARM: AM33xx SPI MLO update handler: detect non CH images ...

The AM3xxx can boot images containing a Configuration Header
(generated with omap_signGP) or images with GP Header (simple
size/address information in front of raw image). Update the
SPI NOR barebox update handler to detect the GP Header images.
These have 0x65726162 ('bare') at the offset header[10]. Also
automatically swap the endianess for non swapped images so
that the regular non swapped images can also be flashed.

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

scripts: mk-am3xxx-spi-image: fix wrong assumptions about SPI images ...

We assumed that there is a special image format for SPI. This is not
the case. The AM33xx can boot either images generated with omap_signGP
or raw images which only have the image size and load address in front
of the image. Whether these images are booted from SPI or another
boot medium doesn't matter. The only special thing about SPI is that
the image is in big endian format.

- renames mk-am3xxx-spi-image.c to mk-omap-image.c as the image format
  is not only supported by AM3xxx but also by the OMAP SoCs
- removes the option to specify the SoC
- introduces -s to build a big endian image
- detects if an image already is an image generated with omap_signGP

So the behaviour is like this:

raw image -> mk-omap-image -> prepend size/address -> image for SD/MMC
raw image -> mk-omap-image -s -> prepend size/address, big endian swap -> image for SPI
CH image -> mk-omap-image -> nothing, input == output
CH image -> mk-omap-image -s -> big endian swap -> image for SPI

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

USB: add usb phy header file ...

Mostly taken from the Linux Kernel to ease porting phy
handling code.

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

USB: gadget: dfu: Add max_speed to dfu_driver ...

The MUSB driver checks for this field. If it doesn't contain
something useful the driver bails out.

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

USB: gadget: fastboot: Add missing include ...

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

imx35-regs: add UART2 to CCM defines ...

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

imx-image: handle i.MX35 special case ...

From the i.MX35 user manual :
Since MLC NAND Flash devices do not guarantee error-free boot blocks,
the i.MX35 boot code requires that the first 4 Kbytes of boot code be
duplicated in a subsequent block to serve as a second copy option.

Actually imx-image puts the image at 4k but it seems that the i.MX35
bootrom copies only from 8k as it expects that there is a copy of the
first 0-4k in 4k-8k (and is supposed to use this copy if there is an
ECC error in the first 4k) as we can see in the following lines :

barebox@Eukrea CPUIMX35:/  md -s /dev/nand0 0x0
00000000: ea0003fe eafffffe eafffffe eafffffe                ................
00000010: eafffffe eafffffe eafffffe eafffffe                ................
00000020: 65726162 00786f62 00000000 00000000
barebox.........

=-> header is @ 0 in flash

barebox@Eukrea CPUIMX35:/  md -s /dev/nand0 0x1000
00001000: 56341200 00000000 0001eda1 00000000                ..4V............
00001010: 00000000 00000000 00000000
00000000                ................

=-> so we have data @ 0x1000 in flash

barebox@Eukrea CPUIMX35:/  md 0x87f00000
87f00000: 00000000 00000000 00000000 00000000                ................
87f00010: 00000000 00000000 00000000
00000000                ................

=-> but we don't find this data in RAM

barebox@Eukrea CPUIMX35:/  md -s /dev/nand0 0x2000
00002000: ea000012 eafffffe eafffffe eafffffe                ................
00002010: eafffffe eafffffe eafffffe eafffffe                ................
00002020: 65726162 00786f62 00000000 00034272
barebox.....rB..

=-> so we have the image @ 0x2000 in flash

barebox@Eukrea CPUIMX35:/  md 0x87f01000
87f01000: ea000871 eafffffe eafffffe eafffffe                q...............
87f01010: eafffffe eafffffe eafffffe eafffffe                ................
87f01020: 65726162 00786f62 87f02000 0003b520                barebox.. .. ...

=-> and we find it in RAM

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: fdt: fix typo in header ...

Signed-off-by: Raphaël Poggi <poggi.raph@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>