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Add Debug support for NEORV32

This commit is contained in:
Giulio Girardi 2023-09-16 10:41:18 +00:00
parent a2c2c211c5
commit eb54ec7402
1 changed files with 50 additions and 13 deletions
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57
litex/soc/cores/cpu/neorv32/core.py
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@ -17,7 +17,16 @@ from litex.soc.cores.cpu import CPU, CPU_GCC_TRIPLE_RISCV32
# Variants -----------------------------------------------------------------------------------------
CPU_VARIANTS = ["minimal", "lite", "standard", "full"]
CPU_VARIANTS = [
"minimal",
"minimal+debug",
"lite",
"lite+debug",
"standard",
"standard+debug",
"full",
"full+debug",
]
# GCC Flags ----------------------------------------------------------------------------------------
@ -30,9 +39,13 @@ GCC_FLAGS = {
# | ||||/-- Double-Precision Floating-Point
# i macfd
"minimal": "-march=rv32i2p0 -mabi=ilp32",
"minimal+debug": "-march=rv32i2p0 -mabi=ilp32",
"lite": "-march=rv32i2p0_mc -mabi=ilp32",
"lite+debug": "-march=rv32i2p0_mc -mabi=ilp32",
"standard": "-march=rv32i2p0_mc -mabi=ilp32",
"standard+debug": "-march=rv32i2p0_mc -mabi=ilp32",
"full": "-march=rv32i2p0_mc -mabi=ilp32",
"full+debug": "-march=rv32i2p0_mc -mabi=ilp32",
}
# NEORV32 ------------------------------------------------------------------------------------------
@ -67,8 +80,8 @@ class NEORV32(CPU):
# # #
# CPU LiteX Core Complex Wrapper
self.specials += Instance("neorv32_litex_core_complex",
# CPU Instance.
self.cpu_params = dict(
# Clk/Rst.
i_clk_i = ClockSignal("sys"),
i_rstn_i = ~(ResetSignal() | self.reset),
@ -95,7 +108,10 @@ class NEORV32(CPU):
i_wb_err_i = idbus.err,
)
self.vhd2v_converter = VHD2VConverter(platform,
if "debug" in variant:
self.add_debug()
self.vhd2v_converter = VHD2VConverter(self.platform,
top_entity = "neorv32_litex_core_complex",
build_dir = os.path.abspath(os.path.dirname(__file__)),
work_package = "neorv32",
@ -103,22 +119,40 @@ class NEORV32(CPU):
params = dict(
p_CONFIG = {
"minimal" : 0,
"minimal+debug" : 0,
"lite" : 1,
"lite+debug" : 1,
"standard" : 2,
"full" : 3
}[variant],
p_DEBUG = False,
"standard+debug" : 2,
"full" : 3,
"full+debug" : 3
}[self.variant],
p_DEBUG = "debug" in self.variant,
)
)
# Add Verilog sources
self.add_sources(variant)
self.add_sources()
def set_reset_address(self, reset_address):
self.reset_address = reset_address
assert reset_address == 0x0000_0000
def add_sources(self, variant):
def add_debug(self):
self.i_jtag_trst = Signal()
self.i_jtag_tck = Signal()
self.i_jtag_tdi = Signal()
self.o_jtag_tdo = Signal()
self.i_jtag_tms = Signal()
self.cpu_params.update(
i_jtag_trst_i = self.i_jtag_trst,
i_jtag_tck_i = self.i_jtag_tck,
i_jtag_tdi_i = self.i_jtag_tdi,
o_jtag_tdo_o = self.o_jtag_tdo,
i_jtag_tms_i = self.i_jtag_tms,
)
def add_sources(self):
cdir = os.path.abspath(os.path.dirname(__file__))
# List VHDL sources.
sources = {
@ -172,3 +206,6 @@ class NEORV32(CPU):
def do_finalize(self):
assert hasattr(self, "reset_address")
# CPU LiteX Core Complex Wrapper
self.specials += Instance("neorv32_litex_core_complex", **self.cpu_params)