Bobby R. Bruce has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/49867 )
Change subject: arch-riscv,configs,python: Update riscv_fs.py/riscv_board.py
......................................................................
arch-riscv,configs,python: Update riscv_fs.py/riscv_board.py
This patch incoporates improvements to the riscv_fs.py and
riscv_board.py:
* Adds 'Resource' objects to download needed resources.
* Adds 'requires' function calls where necessary.
Change-Id: I2ae4f34221d781ed6d71c9f69d56833845f537c4
---
M configs/example/components-library/riscv_fs.py
M src/python/gem5/boards/riscv_board.py
2 files changed, 26 insertions(+), 56 deletions(-)
diff --git a/configs/example/components-library/riscv_fs.py
b/configs/example/components-library/riscv_fs.py
index 7629936..3312012 100644
--- a/configs/example/components-library/riscv_fs.py
+++ b/configs/example/components-library/riscv_fs.py
@@ -33,31 +33,25 @@
* Runs exclusively on the RISC-V ISA with the classic caches
* Assumes that the kernel is compiled into the bootloader
* Automatically generates the DTB file
+* Will boot but requires a user to login using `m5term` (username: `root`,
+ password: `root`)
"""
import m5
from m5.objects import Root
-from gem5.runtime import get_runtime_isa
-from gem5.boards.riscv_board import RiscvBoard
from gem5.memory.single_channel import SingleChannelDDR3_1600
from gem5.processors.simple_processor import SimpleProcessor
from gem5.processors.cpu_types import CPUTypes
from gem5.isas import ISA
-
-import os
-import subprocess
-import gzip
-import shutil
+from gem5.utils.requires import requires
+from gem5.resources.resource import Resource
# Run a check to ensure the right version of gem5 is being used.
-if get_runtime_isa() != ISA.RISCV:
- raise EnvironmentError("The riscv_fs.py should be run with RISCV ISA.")
+requires(isa_required=ISA.RISCV)
from gem5.cachehierarchies.classic.private_l1_private_l2_cache_hierarchy \
- import (
- PrivateL1PrivateL2CacheHierarchy,
- )
+ import PrivateL1PrivateL2CacheHierarchy
from gem5.boards.riscv_board import RiscvBoard
# Setup the cache hierarchy. PrivateL1PrivateL2 and NoCache have been
tested.
@@ -81,43 +75,19 @@
board.connect_things()
-# Download the resources as necessary.
-thispath = os.path.dirname(os.path.realpath(__file__))
-
-bootloader_url = (
- "http://dist.gem5.org/dist/develop/kernels/";
- "riscv/static/bootloader-vmlinux-5.10"
-)
-bootloader_path = os.path.join(thispath, "bootloader-vmlinux-5.10")
-if not os.path.exists(bootloader_path):
- subprocess.run(["wget", "-P", thispath, bootloader_url])
-
-boot_img_url = (
- "http://dist.gem5.org/dist/develop/images/riscv/busybox/riscv-disk.img.gz";
-)
-boot_img_path_gz = os.path.join(thispath, "riscv-disk.img.gz")
-boot_img_path = os.path.join(thispath, "riscv-disk.img")
-
-if not os.path.exists(boot_img_path):
- subprocess.run(["wget", "-P", thispath, boot_img_url])
- with gzip.open(boot_img_path_gz, "rb") as f:
- with open(boot_img_path, "wb") as o:
- shutil.copyfileobj(f, o)
-
# Set the Full System workload.
-board.set_workload(disk_image=boot_img_path, bootloader=bootloader_path)
-
-
-# Begin running of the simulation. This will exit once the Linux system
boot
-# is complete.
-print("Running with ISA: " + get_runtime_isa().name)
-print()
+board.set_workload(disk_image=Resource("riscv-disk-img"),
+ bootloader=Resource("riscv-bootloader-vmlinux-5.10"))
root = Root(full_system=True, system=board)
m5.instantiate()
print("Beginning simulation!")
+# Note: This simulation will never stop. You can access the terminal upon
boot
+# using m5term (`./util/term`): `./m5term localhost <port>`. Note the
`<port>`
+# value is obtained from the gem5 terminal stdout. Look out for
+# "system.platform.terminal: Listening for connections on port <port>".
exit_event = m5.simulate()
print(
"Exiting @ tick {} because {}.".format(m5.curTick(),
exit_event.getCause())
diff --git a/src/python/gem5/boards/riscv_board.py
b/src/python/gem5/boards/riscv_board.py
index 97e32f0..66dbcb0 100644
--- a/src/python/gem5/boards/riscv_board.py
+++ b/src/python/gem5/boards/riscv_board.py
@@ -3,7 +3,7 @@
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
-# met: redistributions of source code must retain the above copyright
+# met: redistributions of source code must retTheain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
@@ -34,7 +34,8 @@
from ..memory.abstract_memory_system import AbstractMemorySystem
from ..cachehierarchies.abstract_cache_hierarchy import
AbstractCacheHierarchy
from ..isas import ISA
-from ..runtime import get_runtime_isa
+from ..resources.resource import AbstractResource
+from ..utils.requires import requires
import m5
@@ -85,11 +86,8 @@
) -> None:
super().__init__(clk_freq, processor, memory, cache_hierarchy)
- if get_runtime_isa() != ISA.RISCV:
- raise EnvironmentError(
- "RiscvBoard will only work with the RISC-V ISA. Please"
- " recompile gem5 with ISA=RISCV."
- )
+ requires(isa_required=ISA.RISCV)
+
if cache_hierarchy.is_ruby():
raise EnvironmentError("RiscvBoard is not compatible with
Ruby")
@@ -176,8 +174,9 @@
memory.set_memory_range(self.mem_ranges)
def set_workload(
- self, bootloader: str, disk_image: str, command: Optional[str] =
None
- ):
+ self, bootloader: AbstractResource, disk_image: AbstractResource,
+ command: Optional[str] = None
+ ) -> None:
"""Setup the full system files
See http://resources.gem5.org/resources/riscv-fs for the currently
@@ -195,18 +194,19 @@
* Disk must be configured correctly to use the command option
* This board doesn't support the command option
- :param bootloader: The compiled bootloader with the kernel as a
payload
- :param disk_image: A disk image containing the OS data. The first
- partition should be the root partition.
+ :param bootloader: The resource encapsulating the compiled
bootloader
+ with the kernel as a payload
+ :param disk_image: The resource encapsulating the disk image
containing
+ the OS data. The first partition should be the root partition.
:param command: The command(s) to run with bash once the OS is
booted
"""
- self.workload.object_file = bootloader
+ self.workload.object_file = bootloader.get_local_path()
image = CowDiskImage(
child=RawDiskImage(read_only=True), read_only=False
)
- image.child.image_file = disk_image
+ image.child.image_file = disk_image.get_local_path()
self.disk.vio.image = image
self.workload.command_line = "console=ttyS0 root=/dev/vda ro"
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I2ae4f34221d781ed6d71c9f69d56833845f537c4
Gerrit-Change-Number: 49867
Gerrit-PatchSet: 1
Gerrit-Owner: Bobby R. Bruce <[email protected]>
Gerrit-MessageType: newchange
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