common: provide stubs for ctrlc_* functions ...

Currently the stubs are only provided for CONFIG_CONSOLE_SIMPLE, but
they are also needed for CONSOLE_NONE. Move them to the header.

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

console_simple: fix linking error when ARCH_HAS_CTRLC enabled ...

this error happens in sandbox with simple console, sandbox
has ARCH_HAS_CTRLC enabled by default

$ make sandbox_defconfig
$ make menuconfig
(select CONFIG_SHELL_SIMPLE)
$ make

LD      barebox
common/built-in.o: In function `__pr_memory_display':
/home/du/source/barebox/common/memory_display.c:117: undefined reference to `ctrlc'
common/built-in.o: In function `run_init':
/home/du/source/barebox/common/startup.c:317: undefined reference to `console_ctrlc_allow'
common/built-in.o: In function `parse_stream_outer':
/home/du/source/barebox/common/hush.c:1742: undefined reference to `ctrlc'
common/built-in.o: In function `run_list_real':
/home/du/source/barebox/common/hush.c:895: undefined reference to `ctrlc'
common/built-in.o: In function `run_shell':
/home/du/source/barebox/common/hush.c:1940: undefined reference to `ctrlc_handled'

Signed-off-by: DU HUANPENG <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fix compile error when set CONFIG_CONSOLE_SIMPLE=y ...

Signed-off-by: DU HUANPENG <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

console_simple: add newline conversion for putc_ll case ...

When console_putc uses putc_ll for early printing then it must
do a newline conversion as putc_ll doesn't do it.

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

console_simple: Fix newline conversion ...

Newline should be "\r\n" rather than "\n\r"

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

console_simple: Remove duplicated newline conversion ...

console_puts uses console_putc for printing which already does newline
conversion, so do not do it again in console_puts.

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

stdio: rename getc to getchar ...

The function we have implemented as getc has the semantics of the
standard function getchar, so rename it accorgingly.

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

login: rework login mechanism ...

We used to have the login functionality in the /env/bin/init script.
This is hard to review and it's too easy to break the login functionality
with changes to this script. Move the places to ask for a password to
C code where we have only a few places where we have to ask for a password.
Mainly these are run_shell() and the menutree command.

This patch introduces a login() function which will only return if the correct
password has been entered. Following calls will return immediately without
asking for a password again.

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

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

Conflicts:
	include/console.h

console_simple: fix: set f_active ...

so generic code can check if the console is enabled

and now we can use loadb & loadxy

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

console_simple: set baudrate at register ...

as the console is always enable

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>

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: 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>

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 simple: return with a proper error value ...

There can be only one console for console_simple, so
return with -EBUSY when the second gets registered.

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

console_simple: fix compiler warning ...

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

Merge branch 'next'

console_simple: Fix compilation ...

Since fprintf and console_puts now return the number of
character written the prototypes have changes. We forgot
to fix console_simple which now fails to compile with:

common/console_simple.c:48:6: error: conflicting types for 'fprintf'
include/stdio.h:57:5: note: previous declaration of 'fprintf' was here
common/console_simple.c:67:6: error: conflicting types for 'console_puts'
include/stdio.h:20:5: note: previous declaration of 'console_puts' was here

Fix this by returning the proper numbers of characters written.

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>

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>

console_simple: add fprintf / console_list for commands/loadb.c ...

commands/loadb.c doesn't build with CONFIG_CONSOLE_SIMPLE, because it uses
fprintf / for_each_console (which uses console_list).

Fix it by adding trivial implementations of both in console_simple.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

simple console: implement console_flush ...

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>