AXI4UART: dynamically adjust txDataPos using beatBytes (#2965)

txData is not always on wdata(7,0) when AXI4 DataWidth >= 32 bits, we
should adjust it dynamically.

Signed-off-by: Yangyu Chen <cyy

AXI4UART: dynamically adjust txDataPos using beatBytes (#2965)

txData is not always on wdata(7,0) when AXI4 DataWidth >= 32 bits, we
should adjust it dynamically.

Signed-off-by: Yangyu Chen <[email protected]>

show more ...

device(uartlite): fix wrong stat register (#2853)

At present, there will be no input from uart. Thus, the "Rx FIFO Valid Data bit" of stat reg should be 0 rather than 1. Also, hardware side cannot g

device(uartlite): fix wrong stat register (#2853)

At present, there will be no input from uart. Thus, the "Rx FIFO Valid Data bit" of stat reg should be 0 rather than 1. Also, hardware side cannot get any valid indication from software side, this bit could only be 1 or 0 staticly. This is just a temporary solution. uart module for emu should be refactored.
This solves the stuck issuse of xvisor boot-up.

show more ...

Bump rocket-chip (#2353)

chore: remove deprecated brackets, APIs, etc. (#2321)

Separate Utility submodule from XiangShan (#1861)

* misc: add utility submodule

* misc: adjust to new utility framework

* bump utility: revert resetgen

* bump huancun

Update difftest to use NEMU master branch (#902)

misc: implement difftest as a submodule

misc: update PCL information (#899)

XiangShan is jointly released by ICT and PCL.

Add MulanPSL-2.0 License (#824)

In this commit, we add License for XiangShan project.

Refactor parameters, SimTop and difftest (#753)

* difftest: use DPI-C to refactor difftest

In this commit, difftest is refactored with DPI-C calls.
There're a few reasons:
(1) From Verilator's

Refactor parameters, SimTop and difftest (#753)

* difftest: use DPI-C to refactor difftest

In this commit, difftest is refactored with DPI-C calls.
There're a few reasons:
(1) From Verilator's manual, DPI-C calls should be more efficient than accessing from dut_ptr.
(2) DPI-C is cross-platform (Verilator, VCS, ...)
(3) difftest APIs are splited from emu.cpp to possibly support more backend platforms
(NEMU, Spike, ...)

The performance at this commit is quite slower than the original emu.
Performance issues will be fixed later.

* [WIP] SimTop: try to use 'XSTop' as soc

* CircularQueuePtr: ues F-bounded polymorphis instead implict helper

* Refactor parameters & Clean up code

* difftest: support basic difftest

* Support diffetst in new sim top

* Difftest; convert recode fmt to ieee754 when comparing fp regs

* Difftest: pass sign-ext pc to dpic functions && fix exception pc

* Debug: add int/exc inst wb to debug queue

* Difftest: pass sign-ext pc to dpic functions && fix exception pc

* Difftest: fix naive commit num limit

Co-authored-by: Yinan Xu <[email protected]>
Co-authored-by: William Wang <[email protected]>

show more ...

AXI4SlaveModule: use Seq[AddressSet] instead of AddressSet
to allow more flexible address range configuration.
With only one AddressSet, we can not even represent
very simple address ranges like [2G,

AXI4SlaveModule: use Seq[AddressSet] instead of AddressSet
to allow more flexible address range configuration.
With only one AddressSet, we can not even represent
very simple address ranges like [2G, 32G).

show more ...

src: remove unused import BoringUtils

Fix axi device bug

Rewrite AXI4 DummySD,Flash,Keyboard,UART

Merge master into dev-fronend

AXI4UART: print to stdout

device,AXI4UART: fix DPI-C function type

device,AXI4UART: fix wrong strb by shifting according to waddr(2,0)

utils,RegMap: support unwritable register

device,AXI4UART: use DPI-C to support getc

device: add AXI4UART

* only support write