In cases when each CSR bit has a name and we use CSR with more than 8
bits, the register diagram quickly becomes crowded and hard to read.
With this patch we split the register into multiple lanes of 8 bits
each.
Specific clkoutn_divide_range can now be provided by specialized XilinxClocking classes.
When provided, the specific range will be used. Floats are also now supported in the
range definition/iteration.
It seems LTO is not yet fully working with all configurations, so it's better
reverting the changes for now.
- cause issues with LM32 available compilers.
- seems to cause issues with min/lite variant of VexRiscv.
- seems to cause issues with some litex-buildenv configurations. (see https://github.com/enjoy-digital/litex/issues/417).
The ModuleDoc-generated documentation for the spi_opi module produced
slightly invalid output due to ambiguities in how rst assigns headers.
As a result, sections from the spi_opi document would appear as full
sections.
This cleans up these errors so that it parses properly under sphinx.
Signed-off-by: Sean Cross <sean@xobs.io>
The ModuleDoc-generated documentation for the i2s module produced
slightly invalid output due to ambiguities in how rst assigns headers.
As a result, sections from the i2s document would appear as full
sections.
This cleans up these errors so that it parses properly under sphinx.
Signed-off-by: Sean Cross <sean@xobs.io>
S7 MMCMs allow fractional divider on clock 0. Add a fallback
to try fractional values on clock 0 if a solution can't be found.
This is necessary for e.g. generating both a 100MHz and 48MHz
clock from a 12MHz source with margin=0
By default the behaviour is unchanged and the SoC will provide a ROM:
./arty.py
Bus Regions: (4)
rom : Origin: 0x00000000, Size: 0x00008000, Mode: R, Cached: True Linker: False
sram : Origin: 0x01000000, Size: 0x00001000, Mode: RW, Cached: True Linker: False
main_ram : Origin: 0x40000000, Size: 0x10000000, Mode: RW, Cached: True Linker: False
csr : Origin: 0x82000000, Size: 0x00010000, Mode: RW, Cached: False Linker: False
The integrated rom can be disabled with:
./arty.py --integrated-rom-size=0
but the SoC builder will check for a user provided rom, and if not provided will complains:
ERROR:SoC:CPU needs rom Region to be defined as Bus or Linker Region.
When a rom is provided, the CPU will use the rom base address as cpu_reset_address.
If the user just wants the CPU to start at a specified address without providing a rom,
the cpu_reset_address parameter can be used:
./arty.py --integrated-rom-size=0 --cpu-reset-address=0x01000000
If the provided reset address is not located in any defined Region, an error will
be produced:
ERROR:SoC:CPU needs reset address 0x00000000 to be in a defined Region.
When no rom is provided, the builder will not build the BIOS.
This allows generating SVD export files during the build as we are already doing for .csv or .json.
Use with Builder:
builder = Builder(soc, csr_svd="csr.svd")
Use with target:
./arty.py --csr-svd=csr.svd
Piotr Esden-Tempski
enjoy-digital
Sean Cross
Gabriel Somlo
bunnie