URL
https://opencores.org/ocsvn/zap/zap/trunk
Subversion Repositories zap
Compare Revisions
- This comparison shows the changes necessary to convert path
/zap
- from Rev 51 to Rev 52
- ↔ Reverse comparison
Rev 51 → Rev 52
/trunk/src/rtl/cpu/zap_cache_fsm.v
105,9 → 105,9
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); |
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// ------------------------------------------------------------- |
// ---------------------------------------------------------------------------- |
// Includes and Localparams |
// ------------------------------------------------------------- |
// ---------------------------------------------------------------------------- |
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`include "zap_localparams.vh" |
`include "zap_defines.vh" |
261,12 → 261,14
begin |
if ( i_rd ) /* Read request. */ |
begin |
/* Accelerate performance */ |
/* |
* Accelerate performance |
* Read throughput at 80MHz |
* clock is 80M operations per |
* second (Hit). |
*/ |
o_dat = adapt_cache_data(i_address[3:2], i_cache_line); |
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hit = 1'd1; |
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hit = 1'd1; |
o_ack = 1'd1; |
end |
else if ( i_wr ) /* Write request */ |
274,7 → 276,12
state_nxt = REFRESH_1; |
o_ack = 1'd0; |
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/* Accelerate performance */ |
/* |
* Each write to cache takes |
* 3 cycles. Write throuput at |
* 80MHz is 26.6M operations per |
* second (Hit). |
*/ |
o_cache_line = |
{i_din,i_din,i_din,i_din}; |
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/trunk/README.md
6,16 → 6,18
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The ZAP processor is a 10 stage pipelined processor for FPGA with support for cache and MMU (ARMv5T compliant). |
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Please note that the processor is *not* an ARM clone but a completely different RTL design, written from scratch (in FPGA compliant Verilog-2001), that can run ARM v5T binaries, hence, no particular ARMX number is specified. |
Please note that the processor is *not* an ARM clone but a completely different RTL design, written from scratch (in FPGA compliant Verilog-2001), that can run ARM v5T binaries (both user and kernel code), hence, no particular ARMX number is specified. |
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This project was created for the ORCONF-2016 Student Design Contest. |
This project was originally created for the ORCONF-2016 Student Design Contest. |
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ZAP is specifically designed to work with FPGAs. |
ZAP is specifically designed to work with FPGAs. To keep the code generic across FPGA vendors, inference based coding style is followed. |
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![Wishbone logo](https://wishbone-interconnect.readthedocs.io/en/latest/_images/wishbone_stamp.svg) |
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#### Repos |
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This project is hosted on Github and Opencores. |
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GIT: https://github.com/krevanth/ZAP |
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SVN: https://opencores.org/projects/zap |
47,6 → 49,9
|Cache/TLB Lock Support | No | |
|CP15 Compliance | v5T (No fine pages) | |
|FCSE Support | Yes | |
|Cache Read Speed (Hit) | 320MB/s @ 80MHz CLK | |
|Cache Write Speed(Hit) | 160MB/s @ 80MHz CLK | |
|Cache Line Size | 16B | |
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* 10-stage pipeline design. Pipeline has extensive bypass network to resolve dependencies. Most operations execute at a rate of 1 operation per clock. |
* 2 write ports for the register file to allow LDR/STR with writeback to execute as a single instruction. |
85,8 → 90,8
| output | | o_wb_we | Wishbone B3 signal. | |
| output | [31:0] | o_wb_dat | Wishbone B3 signal. | |
| output | [3:0] | o_wb_sel | Wishbone B3 signal. | |
| output | [2:0] | o_wb_cti | Wishbone B3 signal. Cycle Type Indicator (Supported modes: Incrementing Burst, End of Burst)| |
| output | [1:0] | o_wb_bte | Wishbone B3 signal. Burst Type Indicator (Supported modes: Linear) | |
| output | [2:0] | o_wb_cti | Wishbone B3 signal. Cycle Type Indicator (Supported modes: Incrementing Burst, End of Burst) | |
| output | [1:0] | o_wb_bte | Wishbone B3 signal. Burst Type Indicator (Supported modes: Linear) | |
| input | | i_wb_ack | Wishbone B3 signal. | |
| input | [31:0] | i_wb_dat | Wishbone B3 signal. | |
| output | | o_wb_stb_nxt | IGNORE THIS PORT. LEAVE OPEN. | |
93,7 → 98,122
| output | | o_wb_cyc_nxt | IGNORE THIS PORT. LEAVE OPEN. | |
| output | [31:0] | o_wb_adr_nxt | IGNORE THIS PORT. LEAVE OPEN. | |
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### Directory Structure |
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├── LICENSE |
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├── makefile |
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├── README.md |
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└── src |
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├── rtl |
│ └── cpu |
│ ├── zap_alu_main.v |
│ ├── zap_cache_fsm.v |
│ ├── zap_cache_tag_ram.v |
│ ├── zap_cache.v |
│ ├── zap_core.v |
│ ├── zap_cp15_cb.v |
│ ├── zap_decode_main.v |
│ ├── zap_decode.v |
│ ├── zap_decompile.v |
│ ├── zap_defines.vh |
│ ├── zap_fetch_main.v |
│ ├── zap_fifo.v |
│ ├── zap_functions.vh |
│ ├── zap_issue_main.v |
│ ├── zap_localparams.vh |
│ ├── zap_mem_inv_block.v |
│ ├── zap_memory_main.v |
│ ├── zap_predecode_compress.v |
│ ├── zap_predecode_coproc.v |
│ ├── zap_predecode_main.v |
│ ├── zap_predecode_mem_fsm.v |
│ ├── zap_ram_simple.v |
│ ├── zap_register_file.v |
│ ├── zap_shifter_main.v |
│ ├── zap_shifter_multiply.v |
│ ├── zap_shift_shifter.v |
│ ├── zap_sync_fifo.v |
│ ├── zap_thumb_decoder.v |
│ ├── zap_tlb_check.v |
│ ├── zap_tlb_fsm.v |
│ ├── zap_tlb.v |
│ ├── zap_top.v |
│ ├── zap_wb_adapter.v |
│ ├── zap_wb_merger.v |
│ └── zap_writeback.v |
├── scripts |
│ ├── bin2vlog.pl |
│ ├── Config.cfg_template |
│ ├── makefile |
│ ├── run_sim.pl |
│ └── uart_input.bash |
├── testbench |
│ ├── chip_top.v |
│ ├── External_IP |
│ │ └── uart16550 |
│ │ ├── doc |
│ │ │ ├── CHANGES.txt |
│ │ │ ├── src |
│ │ │ │ └── UART_spec.doc |
│ │ │ └── UART_spec.pdf |
│ │ └── rtl |
│ │ ├── raminfr.v |
│ │ ├── uart_debug_if.v |
│ │ ├── uart_defines.v |
│ │ ├── uart_receiver.v |
│ │ ├── uart_regs.v |
│ │ ├── uart_rfifo.v |
│ │ ├── uart_sync_flops.v |
│ │ ├── uart_tfifo.v |
│ │ ├── uart_top.v |
│ │ ├── uart_transmitter.v |
│ │ └── uart_wb.v |
│ ├── ram.v |
│ ├── timer.v |
│ ├── uart_rx_logger.v |
│ ├── uart_tx_dumper.v |
│ ├── vic.v |
│ └── zap_tb.v |
└── ts |
├── arm_test |
│ ├── arm_test.c |
│ ├── arm_test.ld |
│ ├── arm_test.s |
│ ├── Config.cfg |
│ ├── Description.txt |
│ └── makefile |
├── factorial |
│ ├── Config.cfg |
│ ├── Description.txt |
│ ├── factorial.c |
│ ├── factorial.ld |
│ ├── factorial.s |
│ └── makefile |
├── makefile |
├── thumb_test |
│ ├── Config.cfg |
│ ├── Description.txt |
│ ├── linker.ld |
│ ├── main.c |
│ ├── makefile |
│ └── thumb.s |
└── uart |
├── Config.cfg |
├── Description.txt |
├── irq_handler.c |
├── main.c |
├── makefile |
├── uart.c |
├── uart.h |
├── uart.ld |
└── uart.s |
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### Run Sample Tests |
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*Tested on Ubuntu 16.04 LTS/18.04 LTS* |
101,12 → 221,13
Let the variable $test_name hold the name of the test. See the src/ts directory for some basic tests pre-installed. Available test names are: factorial, arm_test, thumb_test, uart. New tests can be added using these as starting templates. Please note that these will be run on the SOC platform (chip_top) that consist of the ZAP processor, 2 x UARTs, a VIC and a timer. |
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```bash |
sudo apt-get install sudo apt-get install gcc-arm-none-eabi binutils-arm-none-eabi gdb openocd iverilog gtkwave make perl xterm |
sudo apt-get install gcc-arm-none-eabi binutils-arm-none-eabi gdb openocd |
sudo apt-get install iverilog gtkwave make perl xterm |
cd $PROJ_ROOT/src/ts/$test_name # $PROJ_ROOT is the project directory. |
make # Runs the test using IVerilog. |
make # Runs the test using IVerilog. |
cd $PROJ_ROOT/obj/ts/$test_name # Switch to object folder. |
gvim zap.log.gz # View the log file |
gtkwave zap.vcd.gz # Exists if selected by Config.cfg. See PDF document for more information. |
gvim zap.log.gz # View the log file |
gtkwave zap.vcd.gz # Exists if selected by Config.cfg of that test case. |
``` |
To use this processor in your SOC, instantiate this top level CPU module in your project: /src/rtl/cpu/zap_top.v |
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