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>

console: partly revert 84688df ...

Some unrelated code leaked in in this commit

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

console: make locally used function static ...

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

console: Fix line endings ...

use \r\n instead of \n\r

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

get rid of device ids ...

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

console: buffer characters before console is initialized ...

instead of throwing all output away when the console
is not initialized, buffer it in a kfifo and print
it later when the first console gets initialized.

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

console: rename console_buffer to console_input_buffer ...

...as we want to add an output buffer, too

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

Flush consoles before exiting ...

We use FIFOs on some devices, so flush them before exiting so
we do not get funny characters in the output.

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

Console: Fix baudrate switching ...

When waiting for the user to confirm the new baudrate, wait
for '\n' and '\r' instead of only '\r'

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

console: add a simple console for saving space ...

Add a simple console layer which is not able to handle multiple
consoles for those who don't need it.

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

Add the possibility to have an architecture specific ctrlc() function. ...

This allows us to return immediately in ctrlc() on sandbox and thus
not slow down network througput.

Move display_banner() to console.c. This helps us to show ...

the banner as first message.

Use Linux Kernel list implementation for console devices instead ...

of homegrown list.

Fix use of unitialized Variable. Why didn't this come up earlier???

export symbols

Export symbols printf and the ones needed for getopt

add console buffering

- putc is now putchar for better standard conformity ...

- make printf return int

whitespace cleanup

fix for !CONFIG_HAS_EARLY_INIT

add early console for mpc5200