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core/vexriscv_smp add --expose-time, which add "clint_time" as output of the cpu.

This commit is contained in:
Dolu1990 2023-09-12 10:42:44 +02:00
parent 5d9dd1059d
commit c16add73b4
1 changed files with 12 additions and 0 deletions
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12
litex/soc/cores/cpu/vexriscv_smp/core.py
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@ -46,6 +46,7 @@ class VexRiscvSMP(CPU):
dcache_width = 32
icache_width = 32
aes_instruction = False
expose_time = False
out_of_order_decoder = True
privileged_debug = False
wishbone_memory = False
@ -79,6 +80,7 @@ class VexRiscvSMP(CPU):
cpu_group.add_argument("--with-rvc", action="store_true", help="Enable RISC-V compressed instruction support")
cpu_group.add_argument("--dtlb-size", default=4, help="Data TLB size.")
cpu_group.add_argument("--itlb-size", default=4, help="Instruction TLB size.")
cpu_group.add_argument("--expose-time", action="store_true", help="Add CLINT time output.")
@staticmethod
def args_read(args):
@ -100,6 +102,7 @@ class VexRiscvSMP(CPU):
if(args.dcache_ways): VexRiscvSMP.dcache_ways = int(args.dcache_ways)
if(args.icache_ways): VexRiscvSMP.icache_ways = int(args.icache_ways)
if(args.aes_instruction): VexRiscvSMP.aes_instruction = bool(args.aes_instruction)
if(args.expose_time): VexRiscvSMP.expose_time = bool(args.expose_time)
if(args.without_out_of_order_decoder): VexRiscvSMP.out_of_order_decoder = False
if(args.with_privileged_debug): VexRiscvSMP.privileged_debug = True
if(args.with_wishbone_memory): VexRiscvSMP.wishbone_memory = True
@ -178,6 +181,7 @@ class VexRiscvSMP(CPU):
f"{'_'+ldw if not VexRiscvSMP.wishbone_memory else ''}" \
f"{'_Cdma' if VexRiscvSMP.coherent_dma else ''}" \
f"{'_Aes' if VexRiscvSMP.aes_instruction else ''}" \
f"{'_Time' if VexRiscvSMP.expose_time else ''}" \
f"{'_Ood' if VexRiscvSMP.out_of_order_decoder else ''}" \
f"{'_Wm' if VexRiscvSMP.wishbone_memory else ''}" \
f"{'_Wf32' if VexRiscvSMP.wishbone_force_32b else ''}" \
@ -267,6 +271,7 @@ class VexRiscvSMP(CPU):
gen_args.append(f"--icache-ways={VexRiscvSMP.icache_ways}")
gen_args.append(f"--litedram-width={VexRiscvSMP.litedram_width}")
gen_args.append(f"--aes-instruction={VexRiscvSMP.aes_instruction}")
gen_args.append(f"--expose-time={VexRiscvSMP.expose_time}")
gen_args.append(f"--out-of-order-decoder={VexRiscvSMP.out_of_order_decoder}")
gen_args.append(f"--privileged-debug={VexRiscvSMP.privileged_debug}")
gen_args.append(f"--wishbone-memory={VexRiscvSMP.wishbone_memory}")
@ -366,6 +371,13 @@ class VexRiscvSMP(CPU):
)
]
# expose CLINT time
if VexRiscvSMP.expose_time:
self.clint_time = Signal(64)
self.cpu_params.update(
o_clint_time = self.clint_time
)
def set_reset_address(self, reset_address):
self.reset_address = reset_address
assert reset_address == 0x0000_0000