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tools/litex_json2dts_linux: Add intial Rocket support (just to allow .dts generation as basis, now will need to be adapted).

This commit is contained in:
Florent Kermarrec 2023-02-20 10:17:23 +01:00
parent 8c79c2599f
commit a5d9d309e5
1 changed files with 6 additions and 5 deletions
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11
litex/tools/litex_json2dts_linux.py
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@ -36,6 +36,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
"mor1kx" : "or1k", "mor1kx" : "or1k",
"marocchino" : "or1k", "marocchino" : "or1k",
"vexriscv smp-linux" : "riscv", "vexriscv smp-linux" : "riscv",
"rocketrv64[imac]" : "riscv",
} }
default_initrd_start = { default_initrd_start = {
"or1k": 8*mB, "or1k": 8*mB,
@ -122,15 +123,15 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
i_tlb_ways = d["constants"]["cpu_itlb_ways"]) i_tlb_ways = d["constants"]["cpu_itlb_ways"])
# CPU(s) Count. # CPU(s) Count.
cpus = range(int(d["constants"]["config_cpu_count"])) ncpus = int(d["constants"].get("config_cpu_count", 1))
# CPU(s) Topology. # CPU(s) Topology.
cpu_map = "" cpu_map = ""
if int(d["constants"]["config_cpu_count"]) > 1: if ncpus > 1:
cpu_map += """ cpu_map += """
cpu-map { cpu-map {
cluster0 {""" cluster0 {"""
for cpu in cpus: for cpu in range(ncpus):
cpu_map += """ cpu_map += """
core{cpu} {{ core{cpu} {{
cpu = <&CPU{cpu}>; cpu = <&CPU{cpu}>;
@ -145,7 +146,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
#size-cells = <0>; #size-cells = <0>;
timebase-frequency = <{sys_clk_freq}>; timebase-frequency = <{sys_clk_freq}>;
""".format(sys_clk_freq=d["constants"]["config_clock_frequency"]) """.format(sys_clk_freq=d["constants"]["config_clock_frequency"])
for cpu in cpus: for cpu in range(ncpus):
dts += """ dts += """
CPU{cpu}: cpu@{cpu} {{ CPU{cpu}: cpu@{cpu} {{
device_type = "cpu"; device_type = "cpu";
@ -284,7 +285,7 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
}}; }};
""".format( """.format(
plic_base =d["memories"]["plic"]["base"], plic_base =d["memories"]["plic"]["base"],
cpu_mapping =("\n" + " "*20).join(["&L{} 11 &L{} 9".format(cpu, cpu) for cpu in cpus])) cpu_mapping =("\n" + " "*20).join(["&L{} 11 &L{} 9".format(cpu, cpu) for cpu in range(ncpus)]))
elif cpu_arch == "or1k": elif cpu_arch == "or1k":
dts += """ dts += """