ARM i.MX35: Let MAX clk be in run-mode-on ...

The reset value for the MAX clk gate is 0b10, that is it is turned
on in CPU run mode and off in stop mode. Configure it that way during
startup.

The 0b11 value previously in this field causes some nasty behaviour in
the Linux kernel:

- The i.MX35 has two bits per clock gate which are decoded as follows:
  0b00 -> clock off
  0b01 -> clock is on in run mode, off in wait/doze
  0b10 -> clock is on in run/wait mode, off in doze
  0b11 -> clock is always on

The MAX clock is needed by the SoC, yet unused in the Kernel, so the
common clock framework will disable it during late init time. It will
only disable clocks though which it detects as being on. This detection
is made depending on the lower bit of the gate. So with the value of
0b11 the clock framework will detect the clock as turned on, yet unused,
hence it will turn it off and the system locks up.
With the value of 0b10 instead, the clock framework will detect the
clock as being disabled and will not try to turn it off, so the
system works.

The real bug is in the Linux clock framework. However, the value 0f 0b10
seems to be a sane default value, so restore it. This lets Linux work
again and gives time to fix the bug in Linux.

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

ARM i.MX: Fix booting from NOR when external nand boot is enabled ...

We cannot jump to SDRAM unconditionally in imx*_barebox_boot_nand_external.
When we really boot from NOR flash the binary is not yet copied to SDRAM.
Instead, let the return value of imx_barebox_boot_nand_external() indicate
whether we really boot from NAND and only jump to SDRAM in this case.
Otherwise just continue to the normal SoC specific entry.

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

OMAP4 USB BOOT: remove double line endings ...

From previous patch that replaced printf with puts:
 puts adds it's own line ending, so do not append it manually

Signed-off-by: Vicente Bergas <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm038: Using "get_ram_size" for determine SRAM size ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX27: Use DEVICE_ID_SINGLE for IIM, CCM and ESDCTL ...

Only one of IIM, CCM or ESDCTL device is allowed, so use DEVICE_ID_SINGLE
for these devices.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm970: Replace #ifdef with IS_ENABLED() ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm970: Fix bug with CompactFlash ...

Patch adds missing MX27_PCMCIA_CTL_BASE_ADDR offset for "readl" operator.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm038: Fix serial number IIM-address ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm038: Select IIM by default ...

PCM038 uses IIM in board code, so select IMX_IIM symbol by default.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: pcm038: Remove duplicate imx27_barebox_entry() call ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

phy: fix force mode ...

do not try to read the status in force mode
the link is up

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: ensure constant timeout in fec_halt ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: fec_imx: use dev_err and dev_warn instead of printf ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

imx_spi: fix bus-num setup ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

defaultenv-2: fix base/init/ps1: don't reload /env/config ...

Remove the load of /env/config because is already done by /bin/init,
so it doesn't overwrite any changes done by previous /init/* scripts that
are loaded by /bin/init.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

falconwing: switch to generic peristent env ...

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

imx23-olinuxino: swith to generic peristent env ...

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

env: add register_persistent_environment ...

- heavily copied from register_persistant_environment which was
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>

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

switch boards to lwl-y ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Makefile.lib: introduce lwl-y for lowlevel code ...

The lowlevel code is expected to be present only ONCE

in PBL is enabled otherwise in barebox

This fix the module support with PBL and allow to reduce the size of barebox
by drop the lowlevell init in barebox as the compiler does not discard it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: imx_fec: fix RMII support for i.MX6 ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fix compiler warnings: use puts() instead of printf() ...

Use puts() because printf() isn't necessary,
to fix the following compiler warnings:

/barebox/common/menu.c: In function ‘menu_show’:
/barebox/common/menu.c:277:4: warning: format not a string literal and no format arguments [-Wformat-security]

/barebox/scripts/omap4_usbboot.c: In function ‘read_asic_id’:
/barebox/scripts/omap4_usbboot.c:101:3: warning: format not a string literal and no format arguments [-Wformat-security]

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Vicente <vicencb@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

highbank: add wfi for poweroff ...

needed by the real hardware

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ubiformat: open flash image readonly ...

ubiformat only needs readonly access to the image to flash, so
open it readonly. Opening r/w may fail for example on tftp servers.

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

mtd: nand: do not write empty pages ...

Do not write pages which only contain 0xff. UBI expects pages which
seem empty to be writable. This got lost with:

| commit 3139c3e
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date:   Thu Nov 29 11:16:40 2012 +0100
|
|    mtd core: call driver write function with complete buffer
|
|    mtd->write is supposed to loop around pages internally, no need
|    to do this in mtd_write. This fixes a huge write performance drop
|    with the m25p80 driver when it was converted to a mtd driver recently.
|    Since mtd->writesize is 1 for this driver mtd_write ended up doing
|    single byte writes on the flash.

Introduce mtd_all_ff as a global function since UBI currently has its own
implementation.

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

nandtest: fix length calculation ...

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: add pread and pwrite functions ...

Add pread and pwrite functions.

Split read and write functions to save some space.
The functions pread and pwrite saves and sets the file
position to a given offset and restore them afterwards.

This also makes the nandtest command use these function
which is necessary to not break compilation for the nandtest
command.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: at91: use -EINVAL for invalid gpio on atmel_mci ...

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

at91sam9260/9g20ek: refactor init_board script ...

Refactor to remove duplicated code without changing functionality.
Put "then" on the same line of "if", because:
 - is the most used style in barebox
 - is like c code style
 - is more compact

Reduce the number of lines from 50 to 40.

Tested on at91sam9260ek.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

amba: pl011: set RTS during initialization ...

RTS is an output. Either flow control is used and you care about the state or
it is not used and you don't care. So setting it to active does no harm in
either case. This is inline with what Linux does.

Mandatory for Highbank as example

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>