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>

console: add console unregistering ...

Some console are transient, like the USB connected serial
console which should be removed when the USB connection is
severed.

Enable console removal for such devices.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fix fprintf prototype and return value ...

The puts functions now properly return the number of characters
written. With this we can also fix fprintf.
Also, remove never reached return in fputs.

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

console: fix return values of puts functions ...

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

remove EARLY_INIT and EARLY_CONSOLE support ...

Bitrotted over time and nearly unused, so remove it.

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

console: make console device a child of the hardware device ...

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

fix console fifo (and loadb/loady commands) ...

This patch fixes loadb and loady commands. tstc() should return true if
console_input_buffer is not empty.

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

move version_string to seperate file ...

In a noninteractive environment barebox will be compiled without
command support. So move version_string to a seperate file which
is compiled unconditionally.
Also, display the banner when the simple console support is used.

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

Fix default baudrate setting ...

The menu entry to set the default baudrate (CONFIG_BAUDRATE) makes no sense,
as long as its content is not used. This patch makes barebox using the setting
again.

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

Add generic poll infrastructure ...

Barebox does not have interrupt functionality. Nevertheless it's
sometimes useful to periodically call functions, like for example
a heartbeat LED or watchdog reset. Instead of cluttering the code
with calls to these functions this patch adds a generic polling
infrastructure. Code which might run for longer now can call
poller_call() periodically which in turn will call all registered
pollers.
This patch adds a call to poller_call in two generic pathes. First
of them is getc() which covers waiting for uart input. Second is
ctrlc() which should be called anyway from code which might run
for longer. So instead adding poller_call directly to your code,
consider checking ctrlc instead which also gives additional
convenience to the user.
The poller code is safe against reentrancy which means that it's
safe to call poller_call inside a poller.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

version_string: sparse fixes ...

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

console: sparse fixes ...

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

console: set device_d id at -1 ...

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

rename __initdata to __early_initdata ...

The __initdata define was present before Jean-Christophe
added it as fake value for Linux compatibility. Rename
the previous define to a different name to avoid
clashes

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

rework device parameters ...

Change device parameters so that the memory management is in generic
code. This also removes the need of storing statically initialized
parameters as they are stored in a struct list_head for each device.

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

list: remove duplicated list.h ...

We accidently have two list implementations in the tree:
include/list.h and include/linux/list.h. This patch moves
the latter (newer one) to include/linux/list.h.

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