Commit Graph

8 Commits (d0f319290fd22724a06b6db628aa7ee3458ca1bc)

Author SHA1 Message Date
Gustavo Romero dee71e8f01 Enhance hello_world
This commit enhances hello_world.bin output by printing
a ASCII lightbulb, which turns out to be Microwatt's logo,
instead of simply a "Hello World" text message.

Signed-off-by: Gustavo Romero <gustavo.romero@protonmail.com>
4 years ago
Michael Neuling b1c260599f Send line feed if we get a carriage return in hello world.
Signed-off-by: Michael Neuling <mikey@neuling.org>
4 years ago
Benjamin Herrenschmidt e3941109af console: Cleanup console API
Use a more generic console_init() instead of potato_uart_init(),
and do the same for interrupt control. There should be no
change in behaviour.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
4 years ago
Benjamin Herrenschmidt a87b86e54f console: Replace putstr with puts
It makes things a bit more standard and a bit nicer to read
without all those strlen(). Also console.c takes care of adding
the carriage returns before the linefeeds.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 years ago
Paul Mackerras abefafd70b hello_world: Adjust header inclusions and Makefile
Currently hello_world fails to build with distro cross compiler
packages such as Debian gcc-powerpc64-linux-gnu, because it doesn't
provide string.h or unistd.h.  In fact we don't need them, we just
need stddef.h.  This adds #include <stddef.h> to console.h to get
size_t defined.  We also add #include "console.h" to console.c.

The hello_world Makefile currently hard-codes CROSS_COMPILE on
non-PPC machines.  This means that a command like:

	$ CROSS_COMPILE=powerpc64le-linux-gnu- make

doesn't do what you expect; it just tries to use powerpc64le-linux-gcc
regardless.  Adding a '?' makes it do what one expects.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
5 years ago
Michael Neuling 96fbd61de8 Breakout the console code so it can be reused.
No functional change.

Signed-off-by: Michael Neuling <mikey@neuling.org>
5 years ago
Anton Blanchard 0a0ad9b384 Rebuild hello world assuming a 50MHz clock
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
5 years ago
Anton Blanchard 8bc3e8ea0a Add a simple hello_world example that also echos input
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
5 years ago