spl: Change PAD_TO to CONFIG_SPL_PAD_TO

This was already used by some SPL targets, and allows the pad amount to
be specified by board config headers rather than only in makefile
fragments.

Also supply a pad-to of zero if the variable is undefined.  It works
without this, but this avoids relying on undocumented behavior.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
powerpc/mpc83xx: add support for new SPL

This adds arch support for PPC mpc83xx to boot "minimal" (4K) SPLs
using the new infrastructure.

Existing nand_spl targets are updated to deal with the name change
from nand_init.c to spl_minimal.c (as in theory this isn't limited
to NAND anymore).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
powerpc/mpc83xx: convert MPC8313ERDB to new-SPL

This converts MPC8313ERDB NAND boot to use the new SPL infrastructure.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
MIPS: bootm.c: use debug macro to print debug message

The '## Transferring control ...' message is printed
only if DEBUG is enabled. Get rid of the 'ifdef DEBUG'
statement and use the debug macro instead.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
MIPS: bootm.c: separate linux jump code

Move the actual jump code into a separate function.
This make the code reusable for bootm subcommands.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
MIPS: bootm.c: separate environment initialization

Move the environment initialization code into a
separate function. This make the code reusable
for bootm subcommands.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
MIPS: bootm.c: add support for 'prep' and 'go' subcommands

The bootm command supports subcommands since long time
however those subcommands are not yet usable on MIPS.

The patch is based on the ARM implementation, and it adds
support for the 'prep' and 'go' subcommands only.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
MIPS: qemu-mips: fix a typo in README

The 'Limitations & comments' section refers to the
'-m mips' switch which is not valid. The '-m' switch
can be used for setting the virtual RAM size:

    $qemu-system-mips --help | grep '^-m '
    -m megs         set virtual RAM size to megs MB [default=128]
    $

The correct switch for specifying the machine type is '-M'.
Fix the text to refer to that.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Vlad Lungu <vlad.lungu@windriver.com>
MIPS: qemu-mips: add '-M mips' switch to the example usage command

Using the example command from the README file does
not work as expected. qemu shows a text similar to
the one below and it hangs.

    $ qemu-system-mips -L . -nographic
    Could not open option rom 'pxe-pcnet.rom': No such file or directory
    qemu-system-mips: pci_add_option_rom: failed to find romfile "vgabios-cirrus.bin"
    qemu: terminating on signal 15 from pid 19726

This happens because qemu emulates a Malta board by
default if the machine type is not defined explicitely
on the command line.

For a working test, the '-M mips' switch is required:

    $ qemu-system-mips -M mips -L . -nographic
    Could not open option rom 'vgabios.bin': No such file or directory

    U-Boot 2013.01-rc2-00132-g1e8e648-dirty (Jan 08 2013 - 09:06:42)

    Board: Qemu -M mips CPU: 24Kf proc_id=0x19300
    DRAM:  128 MiB
    ## Unknown flash on Bank 1 - Size = 0x00000000 = 0 MB
    Flash: 0 Bytes
    *** Warning - bad CRC, using default environment

    In:    serial
    Out:   serial
    Err:   serial
    Net:   NE2000
    Hit any key to stop autoboot:  0
    qemu-mips #

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Vlad Lungu <vlad.lungu@windriver.com>
MIPS: qemu-mips: update and fix example usage in README

By now U-Boot supports Qemu MIPS for little and big endian
as well as 32 bit and 64 bit. Update and fix the example usage
in the README to reflect this.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
README.qemu-mips: move README file from board to doc directory

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
README.mips: update known issues and TODOs

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Merge remote-tracking branch 'mpc83xx/next'
i2c: mxs: Staticize the functions in the driver

The local functions in the mxs i2c driver are not marked static, make it so.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Remove unused CONFIG_SYS_I2C_BUS[_SELECT]

"CONFIG_SYS_I2C_BUS" and "CONFIG_SYS_I2C_BUS_SELECT" don't appear anywhere
outside of config files.

Signed-off-by: Michael Jones <michael.jones@matrix-vision.de>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Merge branch 'master' of git://git.denx.de/u-boot-mpc83xx
Merge branch 'master' of git://git.denx.de/u-boot-i2c
ARM: bcm2835: add mailbox driver

The BCM2835 SoC contains (at least) two CPUs; the VideoCore (a/k/a "GPU")
and the ARM CPU. The ARM CPU is often thought of as the main CPU.
However, the VideoCore actually controls the initial SoC boot, and hides
much of the hardware behind a protocol. This protocol is transported
using the SoC's mailbox hardware module.

Here, we add a very simplistic driver for the mailbox module, and define
a few structures for the property messages.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
v5: No change; merged patch series.
v4: No change; rebased.
v3: Re-license to GPL-v2 or later.
v2:
* Added documentation to mbox.h.
* Implemented macros to set up headers and tags.
* Implemented error-checking of response bits in bcm2835_mbox_call_prop().
* Reworked tag structs based on experience writing LCD driver.
* Added a lot more video-related tag structs.
* Added debug spew and error messages to mbox.c; useful when debugging LCD.
* Removed __packed attributes from message structs.
* Removed stale FIXME comments.
ARM: rpi_b: use bcm2835 mbox driver to get memory size

The firmware running on the bcm2835 SoC's VideoCore CPU determines how
much of the system RAM is available for use by the ARM CPU. Previously,
U-Boot assumed that only 128MB was available, since this was the
smallest value configured by any public firmware. However, we can now
query the actual value at run-time from the firmware using the mbox
property protocol.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
v5: No change; merged patch series.
v4: No change; rebased.
v3: No change.
v2: Updated to use macros etc. added in v2 of mbox driver patch.
lcd: calculate line_length after lcd_ctrl_init()

When an LCD driver is actually driving a regular external display, e.g.
an HDMI monitor, the display resolution might not be known until the
display controller has initialized, i.e. during lcd_ctrl_init(). However,
lcd.c calculates lcd_line_length before calling this function, thus
relying on a hard-coded resolution in struct panel_info.

Instead, defer this calculation until after lcd_ctrl_init() has had the
chance to dynamically determine the resolution. This needs to happen
before lcd_clear(), since the value is used there.

grep indicates that no code outside lcd.c uses this lcd_line_length; in
particular, no lcd_ctrl_init() implementations read it.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
--
v5: No change; merged patch series.
v4: Adjusted to addition of lcd_get_size() function. Rebased.
v3: No change.