Commit Graph

10 Commits (83dcfeabf8d37e7ea1adfafcd782f1298a3ddbef)

Author SHA1 Message Date
Dan Horák bd5e4bafba hello_world: Debug print the gitinfo syscon register
.oOOo.
 ."      ".
 ;  .mw.  ;   Microwatt, it works.
  . '  ' .
   \ || /     HDL Git SHA1: 211d23c4ad4fb5-dirty
    ;..;
    ;..;
    `ww'

Signed-off-by: Dan Horák <dan@danny.cz>
Signed-off-by: Michael Neuling <mikey@neuling.org>
2 years ago
Anton Blanchard ff442d1bdb Zero BSS in hello world test
While trying to reduce U/X state issues, I notice that our BSS is not
being initialised in the hello world test.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
2 years ago
Anton Blanchard bc4e6b7efe Reduce hello_world footprint to fit in 8kB
When building with yosys we assume hello_world fits in 8kB. There's
enough free space that we can adjust the linker script to make it fit.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
4 years ago
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 d654667304 console: Add support for the 16550 UART
And rebuild various binaries

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.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 c5f5f50738 hello_world: Use new headers and frequency from syscon
This uses the new header files for register definitions and
extracts the core frequency from syscon rather than hard coding it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 years ago
Paul Mackerras 04ec2115ad hello_world: Use ldcix/stdcix to access UART
This is one step towards ultimately removing the address-based
cache inhibit hack from dcache.vhdl.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
5 years ago
Anton Blanchard 75f3614776 hello_world updates
Shrink hello_world a bit (from 12kB to 8kB).
Include the built images
Add 0x10 and 0x100 entry points

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
5 years ago