| #!/usr/bin/env python3 | |
| # | |
| # Test that Linux kernel boots on ppc powernv machines and check the console | |
| # | |
| # Copyright (c) 2018, 2020 Red Hat, Inc. | |
| # | |
| # This work is licensed under the terms of the GNU GPL, version 2 or | |
| # later. See the COPYING file in the top-level directory. | |
| from qemu_test import LinuxKernelTest, Asset | |
| from qemu_test import wait_for_console_pattern | |
| from qemu_test import exec_command_and_wait_for_pattern | |
| class PowernvMachine(LinuxKernelTest): | |
| timeout = 90 | |
| KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 console=hvc0 ' | |
| panic_message = 'Kernel panic - not syncing' | |
| good_message = 'VFS: Cannot open root device' | |
| ASSET_KERNEL = Asset( | |
| ('https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main/' | |
| 'buildroot/qemu_ppc64le_powernv8-2025.02/vmlinux'), | |
| '6fd29aff9ad4362511ea5d0acbb510667c7031928e97d64ec15bbc5daf4b8151') | |
| ASSET_INITRD = Asset( | |
| ('https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main/' | |
| 'buildroot/qemu_ppc64le_powernv8-2025.02/rootfs.ext2'), | |
| 'aee2192b692077c4bde31cb56ce474424b358f17cec323d5c94af3970c9aada2') | |
| # testdtb for power11, which contains string "hello world" in command line | |
| ASSET_SAMPLE_DTB = Asset( | |
| ('https://github.com/roz3x/qemu/raw/refs/heads/sample-dtb/qemu-powernv11.dtb'), | |
| 'ea1271516264eea1eb58a067a99d0c2ca9528be8dc7d4e46bb2d5ae0d42fc568') | |
| def shell_exec_command_check_fail(self, command): | |
| fail_msg="Fail" | |
| self.shell_exec_command(f"export __FAIL_MSG={fail_msg}") | |
| # If the exit code for the command is non 0, print fail message | |
| command = command + " || echo $__FAIL_MSG" | |
| exec_command_and_wait_for_pattern(self, command, '#', fail_msg) | |
| def shell_exec_command(self, command): | |
| exec_command_and_wait_for_pattern(self, command, '#', self.panic_message) | |
| def do_test_linux_boot(self, command_line = KERNEL_COMMON_COMMAND_LINE): | |
| self.require_accelerator("tcg") | |
| kernel_path = self.ASSET_KERNEL.fetch() | |
| self.vm.set_console() | |
| self.vm.add_args('-kernel', kernel_path, | |
| '-append', command_line) | |
| self.vm.launch() | |
| def test_linux_boot(self): | |
| self.set_machine('powernv') | |
| self.do_test_linux_boot() | |
| console_pattern = 'VFS: Cannot open root device' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| def test_linux_smp_boot(self): | |
| self.set_machine('powernv') | |
| self.vm.add_args('-smp', '4') | |
| self.do_test_linux_boot() | |
| console_pattern = 'smp: Brought up 1 node, 4 CPUs' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| wait_for_console_pattern(self, self.good_message, self.panic_message) | |
| def test_linux_smp_hpt_boot(self): | |
| self.set_machine('powernv') | |
| self.vm.add_args('-smp', '4') | |
| self.do_test_linux_boot(self.KERNEL_COMMON_COMMAND_LINE + | |
| 'disable_radix') | |
| console_pattern = 'smp: Brought up 1 node, 4 CPUs' | |
| wait_for_console_pattern(self, 'hash-mmu: Initializing hash mmu', | |
| self.panic_message) | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| wait_for_console_pattern(self, self.good_message, self.panic_message) | |
| def test_linux_smt_boot(self): | |
| self.set_machine('powernv') | |
| self.vm.add_args('-smp', '4,threads=4') | |
| self.do_test_linux_boot() | |
| console_pattern = 'CPU maps initialized for 4 threads per core' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| console_pattern = 'smp: Brought up 1 node, 4 CPUs' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| wait_for_console_pattern(self, self.good_message, self.panic_message) | |
| def test_linux_remote_interrupts(self): | |
| self.require_accelerator("tcg") | |
| self.require_netdev('user') | |
| self.set_machine('powernv') | |
| # Have below setup in this test: | |
| # 1. e1000e attached to pcie.6, which is from 7th PHB, belonging to 2nd | |
| # socket (chip 1), in a powernv boot with default 6 PHBs per socket | |
| # 2. CPU on 2nd socket (chip 1) disabled | |
| # 3. RX IRQ's affinity to chip 2, and TX IRQ's affinity to chip 3 | |
| # | |
| # Then ping is done, to generate interrupts from e1000e which should go | |
| # to IRQ server on the remote sockets | |
| self.vm.add_args('-smp', '4,sockets=4,cores=1,threads=1') | |
| self.vm.add_args('-netdev', 'user,id=net0') | |
| self.vm.add_args('-device', 'e1000e,netdev=net0,bus=pcie.6') | |
| kernel_path = self.ASSET_KERNEL.fetch() | |
| rootfs_path = self.ASSET_INITRD.fetch() | |
| self.vm.set_console() | |
| self.vm.add_args('-kernel', kernel_path, | |
| '-drive', | |
| f'file={rootfs_path},format=raw,if=none,id=drive0,readonly=on', | |
| '-append', 'root=/dev/nvme0n1 console=hvc0', | |
| '-device', 'nvme,drive=drive0,bus=pcie.2,addr=0x0,serial=1234') | |
| self.vm.launch() | |
| # Wait for boot to complete | |
| console_pattern = 'CPU maps initialized for 1 thread per core' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| console_pattern = 'smp: Brought up 4 nodes, 4 CPUs' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| wait_for_console_pattern(self, 'Run /sbin/init as init process', | |
| self.panic_message) | |
| # Wait for login prompt and login as root (no password in buildroot) | |
| wait_for_console_pattern(self, 'login:', self.panic_message) | |
| exec_command_and_wait_for_pattern(self, 'root', '#', self.panic_message) | |
| # e1000e is connected to socket 1, disable the CPU on socket 1 | |
| self.shell_exec_command("echo 0 > /sys/devices/system/cpu/cpu1/online") | |
| self.shell_exec_command( | |
| "export CPU1_STATE=$(cat /sys/devices/system/cpu/cpu1/online)") | |
| self.shell_exec_command_check_fail("[ $CPU1_STATE -eq 0 ]") | |
| # RX, TX interrupts to chip/cpu 2 & 3 respectively | |
| self.shell_exec_command( | |
| "export RX_IRQ=$(awk '/eth0-rx/ {print $1}' /proc/interrupts | tr -d ':')") | |
| self.shell_exec_command( | |
| "export TX_IRQ=$(awk '/eth0-tx/ {print $1}' /proc/interrupts | tr -d ':')") | |
| self.shell_exec_command("echo 2 > /proc/irq/$RX_IRQ/smp_affinity_list") | |
| self.shell_exec_command("echo 3 > /proc/irq/$TX_IRQ/smp_affinity_list") | |
| # Capture interrupt counts before generating traffic | |
| self.shell_exec_command( | |
| "export RX_BEFORE=$(awk '/eth0-rx/ {print $3}' /proc/interrupts)") | |
| self.shell_exec_command( | |
| "export TX_BEFORE=$(awk '/eth0-tx/ {print $4}' /proc/interrupts)") | |
| # Wait up to 15 seconds for eth0 link to come up | |
| self.shell_exec_command( | |
| "c=0; while ! ip addr show eth0 | grep 'inet 10.0.2'; do " | |
| "sleep 1; c=$((c+1)); [ $c -gt 15 ] && break; done") | |
| self.shell_exec_command_check_fail( | |
| "ip addr show eth0 | grep 'inet 10.0.2'") | |
| # Generate network traffic to trigger remote interrupts | |
| # Ping QEMU's user-mode network gateway (10.0.2.2) | |
| self.shell_exec_command("ping -W2 -c5 10.0.2.2") | |
| # Show final interrupt counts to verify remote interrupts occurred | |
| self.shell_exec_command("cat /proc/interrupts | grep eth0") | |
| # Verify interrupt counts increased (whether interrupts were delivered) | |
| self.shell_exec_command( | |
| "export RX_AFTER=$(awk '/eth0-rx/ {print $3}' /proc/interrupts)") | |
| self.shell_exec_command( | |
| "export TX_AFTER=$(awk '/eth0-tx/ {print $4}' /proc/interrupts)") | |
| # Check that interrupt counts increased | |
| self.shell_exec_command_check_fail("[ $RX_AFTER -gt $RX_BEFORE ]") | |
| self.shell_exec_command_check_fail("[ $TX_AFTER -gt $TX_BEFORE ]") | |
| def test_linux_big_boot(self): | |
| self.set_machine('powernv') | |
| self.vm.add_args('-smp', '16,threads=4,cores=2,sockets=2') | |
| # powernv does not support NUMA | |
| self.do_test_linux_boot() | |
| console_pattern = 'CPU maps initialized for 4 threads per core' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| console_pattern = 'smp: Brought up 2 nodes, 16 CPUs' | |
| wait_for_console_pattern(self, console_pattern, self.panic_message) | |
| wait_for_console_pattern(self, self.good_message, self.panic_message) | |
| def do_test_ppc64_powernv(self, proc): | |
| self.require_accelerator("tcg") | |
| kernel_path = self.ASSET_KERNEL.fetch() | |
| initrd_path = self.ASSET_INITRD.fetch() | |
| self.vm.set_console() | |
| self.vm.add_args('-kernel', kernel_path, | |
| '-drive', | |
| f'file={initrd_path},format=raw,if=none,id=drive0,readonly=on', | |
| '-append', 'root=/dev/nvme0n1 console=tty0 console=hvc0', | |
| '-device', 'pcie-pci-bridge,id=bridge1,bus=pcie.1,addr=0x0', | |
| '-device', 'nvme,drive=drive0,bus=pcie.2,addr=0x0,serial=1234', | |
| '-device', 'e1000e,bus=bridge1,addr=0x3', | |
| '-device', 'nec-usb-xhci,bus=bridge1,addr=0x2') | |
| self.vm.launch() | |
| self.wait_for_console_pattern("CPU: " + proc + " generation processor") | |
| self.wait_for_console_pattern("INIT: Starting kernel at ") | |
| # NVMe, e1000e, and xHCI are probed synchronously by the kernel | |
| # during PCI enumeration, after OPAL hands off to Linux. | |
| self.wait_for_console_pattern("nvme nvme0") | |
| self.wait_for_console_pattern("e1000e") | |
| self.wait_for_console_pattern("xhci_hcd") | |
| self.wait_for_console_pattern("Run /sbin/init as init process") | |
| def test_ppc64_powernv_external_dtb(self): | |
| self.set_machine('powernv11') | |
| self.require_accelerator("tcg") | |
| kernel_path = self.ASSET_KERNEL.fetch() | |
| sample_dtb_path = self.ASSET_SAMPLE_DTB.fetch() | |
| self.vm.set_console() | |
| self.vm.add_args('-kernel', kernel_path, | |
| '-dtb', sample_dtb_path) | |
| self.vm.launch() | |
| # check if custom dtb is reflected or not | |
| wait_for_console_pattern(self, "Kernel command line: hello world", self.panic_message) | |
| def test_powernv8(self): | |
| self.set_machine('powernv8') | |
| self.do_test_ppc64_powernv('P8') | |
| def test_powernv9(self): | |
| self.set_machine('powernv9') | |
| self.do_test_ppc64_powernv('P9') | |
| def test_powernv10(self): | |
| self.set_machine('powernv10') | |
| self.do_test_ppc64_powernv('P10') | |
| def test_powernv11(self): | |
| self.set_machine('powernv11') | |
| self.do_test_ppc64_powernv('Power11') | |
| if __name__ == '__main__': | |
| LinuxKernelTest.main() |