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picorv32
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53 Commits

Author SHA1 Message Date
Clifford Wolf 7c256656c2 PicoSoC: Use RDSR1+RDCR1+WRR instead of RDAR+WRAR 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-16 14:09:12 +02:00
Clifford Wolf 4c1e0f47a6 Add rs232 decode to picosoc hx8kdemo test bench 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 14:27:09 +02:00
Clifford Wolf 28d6f97b00 Fix picosoc quad spi mode (flashio_worker must be multiple of 4 bytes) 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 14:26:49 +02:00
Clifford Wolf b3f292a988 Improve picosoc demo firmware, picosoc firmware build fixes 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-08-14 13:49:08 +02:00
Clifford Wolf ce9d92939a
Merge pull request #61 from mmicko/linker-script 
Created lds file (section mapping) and init for data and bss sections
 2018-08-14 13:05:56 +02:00
Olof Kindgren 12274e9f8a Add FuseSoC .core file for hx8kdemo 
The core file specifies targets for FPGA implementation (fusesoc
build hx8kdemo) and simulation (fusesoc run --tool=<tool>
--target=sim hx8kdemo --firmware=path/to/firmware.he).

Simulation has been tested successfully with icarus, modelsim and xsim
 2018-07-27 23:23:41 +02:00
Olof Kindgren 80f128713d Add FuseSoC .core file for picosoc 
This allows other cores to depend on the generic parts of picosoc
and use that as a base design.
 2018-07-27 23:23:41 +02:00
Olof Kindgren 262da6444c Add FuseSoC .core file for SPI Flash model 
This allows other cores to depend on spiflash. Can also be used to
run the spiflash testbench with

fusesoc run --tool=<tool> spiflash --firmware=path/to/firmware.hex

This has been tested with icarus, modelsim and xsim. Fails with isim
If --tool is left out, icarus will be used as default
 2018-07-26 23:26:43 +02:00
Olof Kindgren 2ceb472178 Bypass picosoc compile order check if PICORV32_REGS is defined. 
Previously, picosoc.v needed to be sourced before picorv32.v to
ensure that the PICORV32_REGS `define (used to select implementation
for the register file) was set to picosoc_regs

This allows for overriding PICORV32_REGS, e.g. by setting it
externally in the EDA tool invocation. In this case, the compile
order between picorv32.v and picosoc.v is not important.

Note: This change will break the safety check if PICORV32_REGS
is defined between sourcing picorv32.v and picosoc.v
 2018-05-18 23:52:31 +02:00
Olof Kindgren c9470e3e04 spiflash: Allow setting firmware from plusarg 2018-05-15 09:53:33 +02:00
Olof Kindgren d26e505251 Fix spiflash_tb 
Update expected two first Flash words to reflect changes in start.s

Add dummy SPI cycles to account for latency
 2018-05-11 22:56:52 +02:00
Larry Doolittle 8b32bc5bd6 Fix miscellaneous typos in documentation 2018-04-17 17:53:08 +02:00
Miodrag Milanovic 9300a510c5 Created lfs file (section mappint) and init for data and bss sections 2018-04-16 20:04:01 +02:00
Luke Valenty a0d5f8efd7
add .data and .bss segments to picosoc 
added .data and .bss segments to picosoc firmware linker script so that static variables may be used.
 2018-04-07 18:42:59 -07:00
Clifford Wolf 65f32c38db Fix picosoc hx8kdemo_tb 2017-11-11 19:49:01 +01:00
Clifford Wolf ad08edd2e5 Add PICORV32_REGS mechanism for ASIC sram instantiation 2017-10-01 15:45:46 +02:00
Clifford Wolf 500db14e44 Improve PicoSoC overview.svg 2017-09-22 05:09:03 +02:00
Clifford Wolf 694b9390fd Enable a bunch of PicoRV32 features in PicoSoC 2017-09-22 04:52:44 +02:00
Clifford Wolf 9e5903fbbe Update PicoSoC README 2017-09-21 19:58:55 +02:00
Clifford Wolf ae0e5a6c94 Remove generic PicoSoC testbench 2017-09-21 19:45:41 +02:00
Clifford Wolf 8b5f2aeff3 Merge branch 'master' of github.com:cliffordwolf/picorv32 2017-09-21 19:37:12 +02:00
Clifford Wolf 29b1d0d7de Resize overview.svg 2017-09-21 19:37:04 +02:00
Clifford Wolf 1c66c76c0e Update README.md 2017-09-21 19:35:29 +02:00
Clifford Wolf 211d0e9c98 Add picosoc overview.svg 2017-09-21 19:32:30 +02:00
Clifford Wolf ebc4d1c4a1 Update README.md 2017-09-21 18:53:54 +02:00
Clifford Wolf 45bd9b81ea Improve picosoc performance.{py,png} 2017-09-21 18:46:09 +02:00
Clifford Wolf 0c9dce7bc2 Add picosoc performance.{py,png} 2017-09-21 18:40:38 +02:00
Clifford Wolf 559cd8db78 Improve PicoSoC example firmware 2017-09-21 16:00:19 +02:00
Clifford Wolf c06ba38113 Add PicoSoC spimem Dual I/O support 2017-09-21 15:50:50 +02:00
Clifford Wolf c00811e8e4 Improve PicoSoC example firmware 2017-09-20 23:53:53 +02:00
Clifford Wolf dea9b88249 Fix bug in PicoSoC spimemio 2017-09-20 23:44:16 +02:00
Clifford Wolf 51436b1c50 PicoSoC QSPI DDR progress 2017-09-20 20:17:27 +02:00
Clifford Wolf 7639e6ebac PicoSoC QSPI and XIP now working (tested in hardware) 2017-09-19 15:32:41 +02:00
Clifford Wolf 2cc1256ce7 Improve PicoSoC demo firmware 2017-09-18 00:43:38 +02:00
Clifford Wolf 506cda5ee6 Update picosoc README.md 2017-09-16 22:40:53 +02:00
Clifford Wolf dabebeb008 Improve PicoSoC demo firmware (read flash ID is working now) 2017-09-16 22:08:05 +02:00
Clifford Wolf 76124b8649 Removed UB from picosoc demo firmware 2017-09-15 19:55:22 +02:00
Clifford Wolf 797c21e95c Improve PicoSoC demo firmware 2017-09-15 16:28:19 +02:00
Clifford Wolf cfd4933272 Switch PicoSoC firmware to C 2017-09-15 15:35:44 +02:00
Clifford Wolf 48f729d13c Update PicoSoC hx8kdemo 2017-09-15 15:34:45 +02:00
Clifford Wolf 66638dcee0 Improve picosoc firmware build process 2017-09-15 15:33:20 +02:00
Clifford Wolf d087b01bb5 Update picosoc/hx8kdemo_tb.v 2017-09-15 14:48:13 +02:00
Clifford Wolf 48b13daef2 Update picosoc memory map 2017-09-15 14:47:50 +02:00
Clifford Wolf 6ade29cce3 Add Cypress S25FL128L datasheet link to picosoc/spiflash.v 2017-09-12 22:46:57 +02:00
Clifford Wolf 99f0cafd19 Add simple UART to PicoSoC 2017-08-11 19:30:53 +02:00
Clifford Wolf febb4b1318 Improve and cleanup picosoc firmware 2017-08-11 16:15:07 +02:00
Clifford Wolf 78f2f5efd2 Add support for QSPI DDR mode, Add SPI MEMIO config reg 2017-08-11 15:57:42 +02:00
Clifford Wolf 53b175d0fb Add spimemio QSPI support 2017-08-11 15:02:31 +02:00
Clifford Wolf 89ad9fc85a Fix bug in picosoc spimemio and some cleanups in hx8kdemo 2017-08-08 12:07:17 +02:00
Clifford Wolf 8821696748 Major rewrite of picosoc spimemio core 2017-08-07 22:36:58 +02:00