restart: replace reset_cpu with registered restart handlers ...

This replaces the reset_cpu() function which every SoC or board must
provide with registered handlers. This makes it possible to have multiple
reset functions for boards which have multiple ways to reset the machine.
Also boards which have no way at all to reset the machine no longer
have to provide a dummy reset_cpu() function.

The problem this solves is that some machines have external PMICs or
similar to reset the system which have to be preferred over the
internal SoC reset, because the PMIC can reset not only the SoC but also
the external devices.

To pick the right way to reset a machine each handler has a priority. The
default priority is 100 and all currently existing restart handlers are
registered with this priority. of_get_restart_priority() allows to retrieve
the priority from the device tree which makes it possible for boards to
give certain restart handlers a higher priority in order to use this one
instead of the default one.

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

ARM: OMAP: remove unused CONFIG_OMAP3_CLOCK_CONFIG option ...

All boards have this option enabled and there should be no reason
to disable it.

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

ARM: OMAP: Safe boot info in fixed SRAM address ...

Storing the boot information in the image itself and passing a pointer
around between images is cumbersome and doesn't fit well with multiimage
support where the pointer we pass around is already occupied by the
devicetree.
Do the same as U-Boot does and store the boot information at the bottom
of the SRAM public stack.
To maintain the compatibility between new xloaders and older barebox
binaries we still pass the boot information to the next stage via pointer.

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

ARM: OMAP: centralize omap startup ...

This introduces a single omap_init function which detects the
SoC and does all further SoC initialization. This is done to get
rid of initcalls without proper SoC protection. The same has been
done for i.MX already.

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

ARM: OMAP: select correct reset_cpu function at runtime ...

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

ARM: OMAP: Add SoC prefix to running_in_* functions ...

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

arm: omap: store boot source info from ROM loader ...

The ROM loader passes the address of a buffer to the MLO in
register 0. Store this data so we can find the boot source later.
On the same way the bootinformation are passed to the barebox,
then. It has to be enshured that r0 contains always the
buffer or the boot source detection will not work.

Applied this on all OMAPs. This patch is based on work of
Jan Luebbe <jlu@pengutronix.de>.

Compile tested on all OMAP boards.
Tested on pcm049, phyCARD-A-L1 and pcm051.

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
Tested-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

omap: move to common bootsource framework ...

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

Folded fix into this patch:

[PATCH] omap4 regression: set correct boot source

Signed-off-by: Vicente Bergas <vicencb@gmail.com>

OMAP: Move bootsource functions ...

The bootsource functions are not specific to the first stage
bootloader. They may also be used for detecting the
bootsource to decide where to load the environment from.

Also clean up includes in board files.

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

ARM: OMAP3: invalidate L2 cache using ROM API ...

Code taken from U-Boot. This makes the beagle board much more
reliable.

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

ARM omap3: Add change OMAP_ prefix to OMAP3_ for registers ...

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

ARM omap: include individual SoC files ...

- remove mach/silicon.h and include omap?-silicon.h directly
- include mach/omap?-clock.h directly where needed

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

ARM omap3: make PRM defines SoC specific ...

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

ARM omap: remove unused function ...

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

Merge branch 'for-next/omap'

Remove old, inaccurate "FileName:" cruft from ARM files ...

In addition, collapse adjacent comment blocks into one and remove
extraneous blank lines.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

OMAP3: Replace magic GPIO numbers in omap3_generic.c with macros. ...

Based on following lines in omap3-silicon.h:

#define OMAP_L4_WKUP_BASE       0x48300000
#define OMAP_L4_PER_BASE        0x49000000
... snip ...
#define OMAP_GPIO1_BASE         (OMAP_L4_WKUP_BASE + 0x10000)
#define OMAP_GPIO2_BASE         (OMAP_L4_PER_BASE + 0x50000)
#define OMAP_GPIO3_BASE         (OMAP_L4_PER_BASE + 0x52000)
#define OMAP_GPIO4_BASE         (OMAP_L4_PER_BASE + 0x54000)
#define OMAP_GPIO5_BASE         (OMAP_L4_PER_BASE + 0x56000)
#define OMAP_GPIO6_BASE         (OMAP_L4_PER_BASE + 0x58000)

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM omap: pbl fixes ...

Omap3 pbl build may need omap3_clock.c. Also, do not use add_generic_device
in pbl

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

ARM OMAP: change region size for gpio banks ...

- increased the region size for OMAP3, as it was not correct
- decrease region size for OMAP4 to prevent overlapping.

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

Merge branch 'for-next/remove-fsf-address' ...

Conflicts:
	drivers/net/miidev.c
	include/miidev.h

ARM OMAP: switch to gpiolib support ...

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

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

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

devices-gpmc-nand: Add OMAP4 gpmc nand timings ...

Add a OMAP4 specific GMPC nand config for pcm049 and phyCARD-A-XL2 to increase
performance. Also add the possiblility to pass a board GPMC nand config.

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

ARM omap3: reimplement setup_auxcr in pure asm ...

This function consists of only inline asm statements, so
use assembly in the first place. Also makes sure that the
function is compiled in arm mode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Sanjeev Premi <premi@ti.com>

ARM omap3: call a_init from board code ...

There is no need to call a_init before relocation, so rename
the function to omap3_core_init and call it from board code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Sanjeev Premi <premi@ti.com>

introduce io.h ...

To allow for some generic io accessors introduce io.h and use
this instead of asm/io.h throughout the tree.

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

Added helper function to get CS1 base address. ...

This helper function can be used for automatic
SDDR configuration based on register settings
made by a previously first stage bootloader
i.e. x-loader.

Signed-off-by: Juergen Kilb <J.Kilb@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add Reset Support for omap3. ...

Inspired from reset_cpu in omap4_generic.c.

Signed-off-by: Juergen Kilb <j.kilb@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM omap: add xload helper functions ...

Add some common xload helper functions to determine the boot source
on omap3/4 and to load images from mmc and nand.

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

ARM omap: move uart access functions to a more generic place ...

These functions can be used on omap4 aswell, so move them to
omap.c

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