RISCDUINO Score

  4.6.1  June 24,2022, Dinesh A
         First fully arduino compatible based verification 
         test case arudino_risc_boot added
  4.6    June 13 2022, Dinesh A                               
         1. icache and dcache bypass config addded            
  4.5    June 2 2022, Dinesh A                                
         1. DFFRAM Replaced by SRAM                           
  4.4    May 29 2022, Dinesh A                                
         1. Digital PLL integrated and clock debug signal add 
           @digitial io [33] port                             
  4.3    May 24 2022, Dinesh A                                
         Re targetted the design to mpw-6 tools set and risc  
         core logic are timing optimized to 100mhz            
  4.2    April 6 2022, Dinesh A                               
         1. SSPI CS# increased from 1 to 4                    
         2. uart port increase to two                         
  3.9    Mar 16 2022, Dinesh A                                
         1. 3 Timer added                                     
         2. Pinmux Register address movement                  
         3. Risc fuse_mhartid is removed and internal tied    
            inside risc core                                  
         4. caravel wb addressing issue restrict to 0x300FFFFF
  3.8    Mar 10 2022, Dinesh A                                
         1. usb chip select bug inside uart_* wrapper         
         2. in wb_host, increased usb clk ctrl to 4 to 8 bit  
  3.7    Mar 2 2022, Dinesh A                                 
           1.   qspi cs# port mapping changed from io 28:25 to 25:28
           2.   sspi, bug fix in reg access and endian support added
           3.   Wishbone interconnect now support cross-connect     
          feature                                             
  3.6    Feb 19, Dinesh A                                     
           A.  Changed Module: wb_host                            
           wishbone slave clock generation config increase from   
           3 to 4 bit support clock source selection              
           B.  Changed Module: qspim                              
            1. Bug fix in spi rise and fall pulse relation w.r.t  
               spi_clk. Note: Previous version work only with     
               spi clock config = 0x2                             
            2. spi_oen generation fix for different spi mode      
            3. spi_csn de-assertion fix for different spi clk div 
  3.5  Feb 16, Dinesh A                                     
           As SRAM from sky130A is not yet qualified,             
           Following changes are done                             
           A. riscv core cache and tcm interface changed to dffram 
           B. removed the mbist controller + 4 SRAM               
           C. mbist controller slave port in wb_intern removed    
           D. Pinmux mbist port are removed                       
           E. mbist related buffering are removed at wb_inter     
  3.4  Feb 14, 2022, Dinesh A                               
       burst mode supported added in imem buffer inside     
       riscv core                                           
          We have created seperate repo from this onwards           
            SRAM based SOC is spin-out to                           
            dineshannayya/riscduino_sram.git                        
          This repo will remove mbist + SRAM and RISC SRAM will be  
          replaced with DFRAM                                       
  3.3  Feb 08, 2022, Dinesh A                               
       support added spisram support in qspim ip            
       There are 4 chip select available in qspim           
       CS#0/CS#1 targeted for SPI FLASH                     
       CS#2/CS#3 targeted for SPI SRAM                      
  3.2  Feb 02, 2022, Dinesh A                               
       Bug fix around icache/dcache and wishbone burst      
       access clean-up                                      
  3.1  Jan 15, 2022, Dinesh A                               
       Major changes in qspim logic to handle special mode  
  3.0  Jan 14, 2022, Dinesh A                               
       Moving from riscv core from syntacore/scr1 to         
       yfive/ycr1 on sankranti 2022 (A Hindu New Year)       
  2.6  Jan 08, 2022, Dinesh A                               
       Pinmux Interrupt Logic change                         
  2.5  Jan 06, 2022, Dinesh A                               
       TCM RAM Bug fix inside syntacore                       
  2.4  Jan 01, 2022, Dinesh A                               
        LA[0] is added as soft reset option at wb_port         
  2.3  Dec 24, 2021, Dinesh A                               
       UART Master added with message handler at wb_host       
  2.2  Dec 20, 2021, Dinesh A                               
       1. MBIST design issue fix for yosys                     
       2. Full chip Timing and Transition clean-up                               
  2.1  Dec 16, 2021, Dinesh A                               
       1.4 MBIST controller changed to single one              
       2.Added one more SRAM to TCM memory                     
       3.WishBone Interconnect chang to take care mbist changes
       4.Pinmux change to take care of mbist changes           
  2.0  Dec 14, 2021, Dinesh A                               
       Added two more 2K SRAM added into Wishbone Interface 
  1.9  Dec 11, 2021, Dinesh A                               
       2 x 2K SRAM added into Wishbone Interface            
       Temporary ADC block removed                          
  1.8  Nov 23, 2021, Dinesh A                               
        Three Chip Specific Signature added at PinMux Reg   
        reg_22,reg_23,reg_24                                
  1.7   Nov 15, 2021, Dinesh A                              
         Bug fix in clk_ctrl High/Low counter width         
         Removed sram_clock                                 
  1.6   Nov 14, 2021, Dinesh A                              
        Major bug, clock divider inside the wb_host reset   
        connectivity open is fixed                          
  1.5 - 6th Nov 2021, Dinesh A                              
        Clock Skew block moved inside respective block due  
        to top-level power hook-up challenges for small IP  
  1.4 - 13th Oct 2021, Dinesh A                             
        Basic verification and Synthesis cleanup            
  1.3 - 30th Sept 2021, Dinesh.A                            
        2KB SRAM Interface added to RISC Core               
  1.2 - 29th Sept 2021, Dinesh.A                            
        1. copied the repo from yifive and renames as       
           riscdunino                                       
        2. Removed the SDRAM controlled                     
        3. Added PinMux                                     
        4. Added SAR ADC for 6 channel                      
  1.1 - 1st Aug 2021, Dinesh A                              
        usb1.1 host integrated part of uart_i2cm_usb module,
        due to number of IO pin limitation,                 
        Only UART/I2C/USB selected based on config mode     
  1.0 - 28th July 2021, Dinesh A                            
        i2cm integrated part of uart_i2cm module,           
        due to number of IO pin limitation,                 
        Only UART OR I2C selected based on config mode      
  0.9 - 7th July 2021, Dinesh A                             
        Removed 2 Unused port connection io_in[31:30] to    
        spi_master to avoid lvs issue                       
  0.8 - 6th July 2021, Dinesh A                             
        For Better SDRAM Interface timing we have taping    
        sdram_clock goint to io_out[29] directly from       
        global register block, this help in better SDRAM    
        interface timing control                            
  0.7 - 28th June 2021, Dinesh A                            
        wb_interconnect master port are interchanged for    
        better physical placement.                          
        m0 - External HOST                                  
        m1 - RISC IMEM                                      
        m2 - RISC DMEM                                      
  0.6 - 27th June 2021, Dinesh A                            
        Digital core level tie are moved inside IP to avoid 
        power hook up at core level                         
        u_risc_top - test_mode & test_rst_n                 
        u_intercon - s*_wbd_err_i                           
        unused wb_cti_i is removed from u_sdram_ctrl        
  0.5 - 25th June 2021, Dinesh A                            
        Since carvel gives only 16MB address space for user 
        space, we have implemented indirect address select  
        with 8 bit bank select given inside wb_host         
        core Address = {Bank_Sel[7:0], Wb_Address[23:0]     
        caravel user address space is                       
        0x3000_0000 to 0x30FF_FFFF                          
  0.4 - 25th June 2021, Dinesh A                            
        Moved the pad logic inside sdram,spi,uart block to  
        avoid logic at digital core level                   
  0.3 - 20th June 2021, Dinesh A                            
         1. uart core is integrated                         
         2. 3rd Slave ported added to wishbone interconnect 
  0.2 - 17th June 2021, Dinesh A                            
         1. In risc core, wishbone and core domain is          
            created                                            
         2. cpu and rtc clock are generated in glbl reg block  
         3. in wishbone interconnect:- Stagging flop are added 
            at interface to break wishbone timing path         
         4. buswidth warning are fixed inside spi_master       
         modified rtl files are                                
            verilog/rtl/digital_core/src/digital_core.sv       
            verilog/rtl/digital_core/src/glbl_cfg.sv           
            verilog/rtl/lib/wb_stagging.sv                     
            verilog/rtl/syntacore/scr1/src/top/scr1_dmem_wb.sv 
            verilog/rtl/syntacore/scr1/src/top/scr1_imem_wb.sv 
            verilog/rtl/syntacore/scr1/src/top/scr1_top_wb.sv  
            verilog/rtl/user_project_wrapper.v                 
            verilog/rtl/wb_interconnect/src/wb_interconnect.sv 
            verilog/rtl/spi_master/src/spim_clkgen.sv          
            verilog/rtl/spi_master/src/spim_ctrl.sv            
  0.1 - 16th Feb 2021, Dinesh A                             
        Initial integration with Risc-V core +              
        Wishbone Cross Bar + SPI  Master