console: allow to specify the device id ...

so we can use dynamic number id with specific devname

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

console: Add set_active callback ...

The netconsole needs to be able to deny activation when the network
has not been enabled. Add an optional callback to the console for
this.

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

Merge branch 'for-next/efi' ...

Conflicts:
	.gitignore
	Makefile
	drivers/serial/Makefile

console: Allow persistent device names ...

Add a devname field to struct console_device so that the device
name can be set by the driver. This makes it possible to have
persistent device names.

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

console: Add puts callback to console devices ...

Some devices may have a much more efficient way to output strings
rather than single characters. Let console devices implement a
callback for this.

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

console: Set Linux console parameter automatically ...

Linux specifies the linux,stdout-path property in the /chosen node
in the devicetree. Unfortunately this is ignored in most cases.
For cases in which barebox uses this property for its own use we
translate this into a Linux boot arg with:

- the console name provided by the serial driver
- the the instance from the 'serial' alias
- the baudrate from the actual baudrate.

So with this it's for devicetee enabled boards no longer necessary
to manually assign a console= parameter. Should a user not want
to use the automatically assigned parameter it should do:

global.linux.bootargs.console=

in the environment.

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

treewide: Add missing includes ...

A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h

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

Merge branch 'for-next/login' ...

Conflicts:
	include/console.h

console: drop f_caps and check the function pointer getc/putc instead ...

None of the driver make the difference between STDOUT and STDERR.
So we just need to check if putc or getc are filled in the console_device

save 32 bytes on versatilepb

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

login: disable input console if password wrong ...

so we guarantee that barebox is secured again user interaction

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

Merge branch 'for-next/omap' ...

Conflicts:
	arch/arm/boards/pcm051/env/config

rework debug_ll ...

Convert to static inline functions and use lower case letters for function
names. Also, include mach/debug_ll.h when an architecture provides support
for debug_ll, not only when it's actually enabled. This allows architecures
to put some UART initialization code into mach/debug_ll.h which is compiled
out when debug_ll is disabled.

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

console: fix console without CONFIG_PARAMETER ...

If CONFIG_PARAMETER is not set, dev_set_param() does not call the setter
function. Call it directly instead in this case.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>

Force set console baudrate at enable time ...

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: console: Fix possible null pointer dereference ...

doing a 'cs0.active=' on the command line crashed barebox. Fix this by
not dereferencing val when it's NULL.

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

console: Use dev_add_param_int for baudrate parameter ...

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

console: consolidate common console code ...

The different console implementations share a good amount of code,
share this in console_common.c.

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

drivers/base: fix corrupt device tree ...

dev_add_child is a very unsafe function. If called multiple times
it allows setting the same device to different parents thus corrupting
the siblings list. This happens regularly since:

| commit c2e568d
| Author: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| Date:   Sat Nov 3 16:11:05 2012 +0100
|
|    bus: add bus device
|
|    automatically add it as parent of any bus device if none already specified
|
|    we have now a nice output per bus

If for example a FATfs is mounted this nice output per bus often ends with:

>     `---- fat0
>     `---- 0
>          `---- 0x86f0000087020031-0x86f000410df27124: /dev/<NULL>
>          `---- sram00
>               `---- 0x00000000-0xffffffffffffffff: /dev/<NULL>
>               `---- 0x00000000-0xffffffffffffffff: /dev/<NULL>
>               unable to handle NULL pointer dereference at address 0x0000000c
> pc : [<87f08a20>]    lr : [<87f08a04>]
> sp : 86eff8c0  ip : 87f3fbde  fp : ffffffff
> r10: ffffffff  r9 : 00000000  r8 : 00000003
> r7 : 86f075b8  r6 : 00000002  r5 : ffffffec  r4 : 86f07544
> r3 : 00000000  r2 : 43f900b4  r1 : 00000020  r0 : 00000005
> Flags: Nzcv  IRQs off  FIQs off  Mode SVC_32
> [<87f08a20>] (do_devinfo_subtree+0x90/0x130) from [<87f08a90>] (do_devinfo_subtree+0x100/0x130)
>
> [<87f3e070>] (unwind_backtrace+0x0/0x90) from [<87f28514>] (panic+0x28/0x3c)
> [<87f28514>] (panic+0x28/0x3c) from [<87f3e4b8>] (do_exception+0x10/0x14)
> [<87f3e4b8>] (do_exception+0x10/0x14) from [<87f3e544>] (do_data_abort+0x2c/0x38)
> [<87f3e544>] (do_data_abort+0x2c/0x38) from [<87f3e268>] (data_abort+0x48/0x60)

This patch fixes this by adding a device to its parents children list in
register_device so that dev_add_child is no longer needed. This function
is removed from the tree. Now callers of register_device have to clearly
set the parent *before* registering a device.

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

console: display Switch to console [csxx] when switching from debug_ll to real console ...

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

console: use debug_ll before the console is available ...

This will allow to have the same feature as earlyprintk in the kernel

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

console/of: evaluate linux,stdout-path property ...

When a linux,stdout-path property is given in the devicetree
activate the corresponding console.

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

console: Cleanup console activation ...

When CONFIG_CONSOLE_ACTIVATE_ALL is set, the banner will never be printed.
Also, the console buffer is emptied when the first console is registered,
even when it's not enabled.

This patch cleans it up in a way that:

- the console buffer is emptied once the first console is activated, not
  when it's registered.
- Make sure that the banner is printed first, so that we can output things
  to the buffer before the banner is printed without ending up in having
  the banner in the middle of the other boot messages.
- Use IS_ENABLED rather than ifdefs

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

switch all platform_bus device/driver registering to platform_driver/device_register ...

now register_driver and register_device are for bus only usage.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

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>

Use DEVICE_ID_DYNAMIC where applicable ...

We now have DEVICE_ID_DYNAMIC for dynamic allocation of device ids,
Use it where applicable.

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

console: use container_of instead of type_data ...

This reduces the usage of type_data.

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

console: make it work without malloc ...

This changes the dynamically allocated kfifos to statically initialized
ones. This makes the console work without malloc and thus safe to be
called before malloc is initialized.

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

poller_call: move from getc to is_timeout ...

this will allow to always call poller_call even durring timeout
and still the case in getc

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

Merge branch 'next'

fprintf: remove unused variable ...

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