Change wording of demo README to make it more clear what the process is
and how things related. This should help the newcomer and it still
usefull for the triained.
Change the command example to be more copy paste friendly.
Fixes#814
In order for mor1kx to run an SMP kernel shadow registers must be
enabled. This patch adds two new variants:
- linux+smp - basic linux + smp support
- linux+smp+fpu - linux with FPU and smp support
puts() and putsnonl() are very similar, and can share code.
Reduce code size by making the former call the latter.
Impact for a RISC-V build:
$ size console.o.orig console.o
text data bss dec hex filename
868 0 12 880 370 console.o.orig
832 0 12 844 34c console.o
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
When building with --cpu-type=mor1kx:
litex/soc/software/bios/readline.c: In function 'readline':
litex/soc/software/bios/readline.c:271:3: warning: case label value exceeds maximum value for type [-Wswitch-outside-range]
271 | case KEY_END:
| ^~~~
litex/soc/software/bios/readline.c:297:3: warning: case label value exceeds maximum value for type [-Wswitch-outside-range]
297 | case KEY_DEL:
| ^~~~
litex/soc/software/bios/readline.c:281:3: warning: case label value exceeds maximum value for type [-Wswitch-outside-range]
281 | case DEL:
| ^~~~
The C standard does not specify the signedness of "char", hence this
depends on the implementation. On e.g. RISC-V, "char" is unsigned, but
on OpenRISC, it is signed.
Fix this by making the "ichar" variable explicitly unsigned.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
When building the linux-on-litex-vexriscv documentation with Sphinx
v1.8.5:
Sphinx error:
master file linux-on-litex-vexriscv/build/orangecrab/doc/contents.rst not found
The default value of "master_doc" was changed from "contents" to "index"
in Sphinx v2[1]. As the LiteX doc system creates "index.rst", it thus
fails to build with Sphinx v1.x.
Explicitly configure "master_doc" to "index", to make it work with all
versions of Sphinx, regardless of the default.
[1] https://www.sphinx-doc.org/ca/latest/usage/configuration.html?highlight=master_doc
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
When using a non-default VexRiscv cluster config, the netlist for that
config needs to be generated. This requires sbt to be installed.
If sbt is missing, an error message is printed:
sh: 1: sbt: not found
This message may easily be lost in the noise, as the build continues, and fails
later with:
ERROR: Can't open input file `litex/pythondata-cpu-vexriscv-smp/pythondata_cpu_vexriscv_smp/verilog/VexRiscvLitexSmpCluster_Cc1_Iw32Is4096Iy1_Dw32Ds4096Dy1_Ood_Wm.v' for reading: No such file or directory
Make the root cause more visible by raising an OSError, and aborting the
build.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
ex reading/writing to scratch register over jtagbone:
In the SoC:
self.add_jtagbone()
Open LiteX Server:
litex_server --jtag
Do the MMAP accesses:
./litex_cli --read 0x4
0x12345678
./litex_clk --write 0x4 0x5aa55aa5
./litex_cli --read 0x4
0x5aa55aa5
Florent Kermarrec
Nick Østergaard
Jędrzej Boczar
Robert Szczepanski
Stafford Horne
Jan Kowalewski
Geert Uytterhoeven
Hans Baier
Konstantin
Guillaume REMBERT