David Harris
1196e5c191
Moved generate statements for optional units into wallypipelinedhart
2021-12-19 16:53:41 -08:00
Ross Thompson
547093b705
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-12-12 17:21:51 -06:00
Ross Thompson
b88ec949cf
Added proper credit to Richard Davis, the author of the original sd card reader.
2021-12-12 15:05:50 -06:00
Ross Thompson
3bdda9687a
Fixed some issues with the SDC having a different counter. When this is copied into synthesis the file names where the same and it gave a conflict.
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Remove preload from dtim.
2021-12-08 15:50:15 -06:00
Ross Thompson
3d829dbbd3
Fixed two issues.
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First the xci files already include the xdc constraints for each IP block. There is no need to include the xdc files explicitly.
Second the bidir buffer for the sd card was connected backwards.
2021-12-07 12:15:50 -06:00
Ross Thompson
74ffb48c0a
Mostly integrated FPGA flow into main branch. Not all tests passing yet.
2021-12-02 18:00:32 -06:00
Ross Thompson
e43aa6ead4
Merge branch 'main' into fpga
2021-11-29 10:06:53 -06:00
Ross Thompson
4af7a27d87
Have linux booting. Not sure about uart, but uart is now part of the ILA and I can see TX changing.
2021-11-12 17:37:07 -06:00
Ross Thompson
b8572d6a2a
Changed several things.
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Removed the need to use async flip flops in SDC.
Added arrs, a synchronizer for reset.
I think this works with the real FPGA hardware.
The last build did not include this arrs but it worked.
2021-11-12 11:13:50 -06:00
Ross Thompson
0817ef20f1
Linux now boots fpga.
2021-10-26 16:49:16 -05:00
Ross Thompson
c90d129498
Fixed boot loader program to start at correct address.
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modified script which converts the ram.txt into preload text file for sdc simulation.
created script to convert ram.txt into binary to write to flash card.
added top level for solo sd card fpga.
2021-10-11 17:22:23 -05:00
Ross Thompson
cbf4e76d1c
Fixed sdc byte and nibble orders.
2021-10-11 12:15:52 -05:00
Ross Thompson
3d9d4cc03f
Partially working sd card reader.
2021-10-11 10:23:45 -05:00
Ross Thompson
c10261f0ad
Added more debug flags.
2021-10-03 11:41:21 -05:00
Ross Thompson
ec4a07de64
Movied tristate to test bench level.
2021-09-30 11:27:42 -05:00
Ross Thompson
db18aac9af
Partially sd card read on fpga.
2021-09-30 11:23:09 -05:00
Ross Thompson
99070127d8
Added debugging directives to system verilog.
2021-09-27 13:57:46 -05:00
Ross Thompson
f2c1ca4bd5
added support to due partial fpga simulation.
2021-09-26 15:00:00 -05:00
Ross Thompson
6dc25e07c2
Updated the fpga bios code to emulate the same behavior as qemu's bootloader and it also copies
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the flash card to dram.
Fixed latch issue in the sd card reader.
2021-09-26 13:22:23 -05:00
Ross Thompson
3a15cc7872
We now have a rough sdc read routine.
2021-09-25 17:51:38 -05:00
Ross Thompson
dd9fe60b28
Write of the SDC address register is correct. The command register is not yet working.
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The root problem is the command register needs to be reset at the end of the SDC transaction.
2021-09-24 18:48:11 -05:00
Ross Thompson
5663522a3f
Now have software interacting with the initialization and settting the address register.
2021-09-24 18:30:26 -05:00
Ross Thompson
232d4a554f
Have program which checks for sdc init and issues read, but read done is
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not correctly being read back by the software. The error is in how the
sdc indicates busy.
2021-09-24 15:53:38 -05:00
Ross Thompson
71e20c7f61
Fixed lint errors in the SDC.
2021-09-24 12:38:48 -05:00
Ross Thompson
af28cfb70c
Added SDC defines to each config mode.
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Added sd_top which is the sd card reader.
2021-09-24 12:24:30 -05:00
Ross Thompson
0a33f5fa46
setup so the sdc does not need to load a model in the imperas test bench.
2021-09-24 11:30:52 -05:00
Ross Thompson
78028947bf
Updated Imperas test bench to work with the SDC reader.
2021-09-24 11:22:54 -05:00
Ross Thompson
4256ef82b1
SDC to ABHLite interface partially done.
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Added SDC to adrdec and uncore.
2021-09-24 10:45:09 -05:00
Ross Thompson
a182263b1c
Added clock gater and divider to generate the SDCCLK.
2021-09-23 17:58:50 -05:00
Ross Thompson
9ed7a1f494
Partial implementation of SDC AHBLite interface.
2021-09-23 17:45:45 -05:00
Ross Thompson
0f7be5e591
Started the AHBLite to SDC interface.
2021-09-22 18:08:38 -05:00
Ross Thompson
f5905f33d3
Initial SD Card reader.
2021-09-22 10:50:29 -05:00
