ARM: imx233-olinuxino: generate complete bootstream ...

- Enable multi-image support to generate bootstream, sd-card and 2nd stage
  images.
- Handle pin-mux in lowlevel.c only.
- Use fine-tuned memory setup from u-boot.

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

arm: mxs: fix pin voltage register value for EMI ...

The EMI pins are documented in the reference manual as using value 0 for both
1.8V and 2.5V. Value 1 is reserved.

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

Documentation: Add documentation for booting Freescale MXS SoCs ...

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

ARM: MXS: Update Karo TX28 board support ...

- enable multiimage support to generate bootstream, sd-card and 2nd
  stage images
- Enable new defaultenv support
- Enable more features

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

ARM: MXS: Add multiimage support ...

The Freescale MXS SoCs have a multi staged boot process which needs
different images composed out of different binaries. The ROM executes
a so called bootstream which contains multiple executables. The first
one is executed in SRAM and the purpose of this binary is to setup
the internal PMIC and the SDRAM. The second image is usually the
bootloader itself. In case of barebox the bootstream is composed
out of the self extracting barebox image (pblx) and the prepare
stage for setting up the SDRAM.

The bootstream image itself is useful for USB boot, but for booting from
SD cards or NAND a BCB header has to be prepended to the image. In case
of SD boot the image has the .mxssd file extension in barebox.

Since the bootstream images are encrypted they are not suitable for
2nd stage execution. For this purpose the 2nd stage images are generated.

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

ARM: MXS: Enable iomux support for pbl ...

Upcoming lowlevel code for MXS needs the iomux setup functions

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

ARM: MXS: Add more base address defines ...

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

ARM: Add get_sp() and get_lr() functions ...

In case it's needed for some early code.

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

ARM: mxs: Add lowlevel setup from U-Boot ...

U-Boot has code to replace the infamous Freescale bootlet code.
This patch adds this for barebox with some changes:
- Separate it more into mx23/mx28 functions instead of mxs functions
  with #ifdefs for the actual SoC
- Add mx2x_power_init_battery_input() power entry point for boards
  which have a regulated input on the battery pin to supply the board.
- Export more functions to be more flexible when boards need non standard
  setup.

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

ARM: Add U-Boot specific io functions ...

To make it easier to adopt code from U-Boot.

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

ARM: MXS: remove unnecessary mach/imx-regs.h include ...

And replace the ones needed with the SoC specific header.

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

drivers: remove unnecessary mach/imx-regs.h include ...

And replace the ones needed with the SoC specific header.

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

scripts: Add mxs-usb-loader tool ...

This is directly taken from the rockbox projects sbloader tool,
just renamed to mxs-usb-loader to avoid confusion with bareboxes
several different image tools.

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

scripts: Add mxsboot tool ...

Copied from U-Boot v2014.10 and changed to use getopt instead
of handcrafted parsing.

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

scripts: add mxsimage tool ...

This is copied from U-Boot v2014.10 and modified for use with
barebox:

- Add a main() function to make it a standalone tool
- Add option to pass in the prepare stage and bootloader
  image as options. If the config file contains @PREP@ or
  @BOOTLOADER@ the string will be replaced with the actual
  image file passed via the -p and -b options.

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

ARM: uncompress.c: Add some debugging messages ...

Now that we have printf support in the PBL we can use it right
after setup_c(). Add some debug messages to the early PBL code
to make it more clear what is happening there.

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

ARM: start.c: Add some debugging messages ...

pr_debug can now be used right after setup_c(), so add some debug
messages to the early startup code to make it a bit more clear what
is happening there.

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

console: Make sure xzalloc is only used when it's available ...

To make it possible to call the pr_* functions very early before
malloc is initialized test if malloc is available before using
it.

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

malloc: Add a function to detect if malloc pool is already initialized ...

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

Add PBL console support ...

This adds simple console support to the PBL which makes it
possible to print more complex messages in the PBL than just
strings or hex numbers. For now puts_ll is used to print the
messages, so it depends on CONFIG_DEBUG_LL which makes it
more a debugging option. However, this could be extended later
to get regular output from the PBL if desired.

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

printf: use local isdigit/isalnum implementation ...

To be independent of the _ctype array. This makes it possible
to add printf support to the PBL without adding _ctype aswell.

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

printf: move simple_strto*() functions to separate file ...

These are not needed in the PBL, so move them to a separate file.

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

printf: move panic() to common/misc.c ...

panic() is not really a printf like function, so move it to common/misc.c.
This is done because we want to have printf support in the PBL, but PBL
has it's own panic() implementation.

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

PBL: Add strnlen, needed for printf support ...

vsprintf needs strnlen, so in oder to add console support to
the PBL we need a strnlen implementation.

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

blspec: print error when devicetree not found ...

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

fdt: don't strip const qualifier ...

Fixes:
warning: assignment discards 'const' qualifier from pointer target type

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: Fix typo collumn -> column ...

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

ARM: AM335x: Fix typo in Phytec boards ...

Has to be bootsource not boosource.

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

ARM: dts: Add missing gpmc setting for phyFLEX-AM335x ...

cycle2cycle-diffcsen needs to be enabled.

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

ARM: dts: Add missing gpmc setting for phyCORE-AM335x ...

cycle2cycle-diffcsen needs to be enabled.

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