| 1 | #!/usr/bin/env python3 |
| 2 | # |
| 3 | # Test that Linux kernel boots on ppc powernv machines and check the console |
| 4 | # |
| 5 | # Copyright (c) 2018, 2020 Red Hat, Inc. |
| 6 | # |
| 7 | # This work is licensed under the terms of the GNU GPL, version 2 or |
| 8 | # later. See the COPYING file in the top-level directory. |
| 9 | |
| 10 | from qemu_test import LinuxKernelTest, Asset |
| 11 | from qemu_test import wait_for_console_pattern |
| 12 | from qemu_test import exec_command_and_wait_for_pattern |
| 13 | |
| 14 | class PowernvMachine(LinuxKernelTest): |
| 15 | |
| 16 | timeout = 90 |
| 17 | KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 console=hvc0 ' |
| 18 | panic_message = 'Kernel panic - not syncing' |
| 19 | good_message = 'VFS: Cannot open root device' |
| 20 | |
| 21 | ASSET_KERNEL = Asset( |
| 22 | ('https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main/' |
| 23 | 'buildroot/qemu_ppc64le_powernv8-2025.02/vmlinux'), |
| 24 | '6fd29aff9ad4362511ea5d0acbb510667c7031928e97d64ec15bbc5daf4b8151') |
| 25 | |
| 26 | ASSET_INITRD = Asset( |
| 27 | ('https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main/' |
| 28 | 'buildroot/qemu_ppc64le_powernv8-2025.02/rootfs.ext2'), |
| 29 | 'aee2192b692077c4bde31cb56ce474424b358f17cec323d5c94af3970c9aada2') |
| 30 | |
| 31 | # testdtb for power11, which contains string "hello world" in command line |
| 32 | ASSET_SAMPLE_DTB = Asset( |
| 33 | ('https://github.com/roz3x/qemu/raw/refs/heads/sample-dtb/qemu-powernv11.dtb'), |
| 34 | 'ea1271516264eea1eb58a067a99d0c2ca9528be8dc7d4e46bb2d5ae0d42fc568') |
| 35 | |
| 36 | def shell_exec_command_check_fail(self, command): |
| 37 | fail_msg="Fail" |
| 38 | self.shell_exec_command(f"export __FAIL_MSG={fail_msg}") |
| 39 | |
| 40 | # If the exit code for the command is non 0, print fail message |
| 41 | command = command + " || echo $__FAIL_MSG" |
| 42 | exec_command_and_wait_for_pattern(self, command, '#', fail_msg) |
| 43 | |
| 44 | def shell_exec_command(self, command): |
| 45 | exec_command_and_wait_for_pattern(self, command, '#', self.panic_message) |
| 46 | |
| 47 | def do_test_linux_boot(self, command_line = KERNEL_COMMON_COMMAND_LINE): |
| 48 | self.require_accelerator("tcg") |
| 49 | kernel_path = self.ASSET_KERNEL.fetch() |
| 50 | |
| 51 | self.vm.set_console() |
| 52 | self.vm.add_args('-kernel', kernel_path, |
| 53 | '-append', command_line) |
| 54 | self.vm.launch() |
| 55 | |
| 56 | def test_linux_boot(self): |
| 57 | self.set_machine('powernv') |
| 58 | self.do_test_linux_boot() |
| 59 | console_pattern = 'VFS: Cannot open root device' |
| 60 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 61 | |
| 62 | def test_linux_smp_boot(self): |
| 63 | self.set_machine('powernv') |
| 64 | self.vm.add_args('-smp', '4') |
| 65 | self.do_test_linux_boot() |
| 66 | console_pattern = 'smp: Brought up 1 node, 4 CPUs' |
| 67 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 68 | wait_for_console_pattern(self, self.good_message, self.panic_message) |
| 69 | |
| 70 | def test_linux_smp_hpt_boot(self): |
| 71 | self.set_machine('powernv') |
| 72 | self.vm.add_args('-smp', '4') |
| 73 | self.do_test_linux_boot(self.KERNEL_COMMON_COMMAND_LINE + |
| 74 | 'disable_radix') |
| 75 | console_pattern = 'smp: Brought up 1 node, 4 CPUs' |
| 76 | wait_for_console_pattern(self, 'hash-mmu: Initializing hash mmu', |
| 77 | self.panic_message) |
| 78 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 79 | wait_for_console_pattern(self, self.good_message, self.panic_message) |
| 80 | |
| 81 | def test_linux_smt_boot(self): |
| 82 | self.set_machine('powernv') |
| 83 | self.vm.add_args('-smp', '4,threads=4') |
| 84 | self.do_test_linux_boot() |
| 85 | console_pattern = 'CPU maps initialized for 4 threads per core' |
| 86 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 87 | console_pattern = 'smp: Brought up 1 node, 4 CPUs' |
| 88 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 89 | wait_for_console_pattern(self, self.good_message, self.panic_message) |
| 90 | |
| 91 | def test_linux_remote_interrupts(self): |
| 92 | self.require_accelerator("tcg") |
| 93 | self.require_netdev('user') |
| 94 | self.set_machine('powernv') |
| 95 | |
| 96 | # Have below setup in this test: |
| 97 | # 1. e1000e attached to pcie.6, which is from 7th PHB, belonging to 2nd |
| 98 | # socket (chip 1), in a powernv boot with default 6 PHBs per socket |
| 99 | # 2. CPU on 2nd socket (chip 1) disabled |
| 100 | # 3. RX IRQ's affinity to chip 2, and TX IRQ's affinity to chip 3 |
| 101 | # |
| 102 | # Then ping is done, to generate interrupts from e1000e which should go |
| 103 | # to IRQ server on the remote sockets |
| 104 | self.vm.add_args('-smp', '4,sockets=4,cores=1,threads=1') |
| 105 | self.vm.add_args('-netdev', 'user,id=net0') |
| 106 | self.vm.add_args('-device', 'e1000e,netdev=net0,bus=pcie.6') |
| 107 | |
| 108 | kernel_path = self.ASSET_KERNEL.fetch() |
| 109 | rootfs_path = self.ASSET_INITRD.fetch() |
| 110 | self.vm.set_console() |
| 111 | self.vm.add_args('-kernel', kernel_path, |
| 112 | '-drive', |
| 113 | f'file={rootfs_path},format=raw,if=none,id=drive0,readonly=on', |
| 114 | '-append', 'root=/dev/nvme0n1 console=hvc0', |
| 115 | '-device', 'nvme,drive=drive0,bus=pcie.2,addr=0x0,serial=1234') |
| 116 | self.vm.launch() |
| 117 | |
| 118 | # Wait for boot to complete |
| 119 | console_pattern = 'CPU maps initialized for 1 thread per core' |
| 120 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 121 | console_pattern = 'smp: Brought up 4 nodes, 4 CPUs' |
| 122 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 123 | wait_for_console_pattern(self, 'Run /sbin/init as init process', |
| 124 | self.panic_message) |
| 125 | |
| 126 | # Wait for login prompt and login as root (no password in buildroot) |
| 127 | wait_for_console_pattern(self, 'login:', self.panic_message) |
| 128 | exec_command_and_wait_for_pattern(self, 'root', '#', self.panic_message) |
| 129 | |
| 130 | # e1000e is connected to socket 1, disable the CPU on socket 1 |
| 131 | self.shell_exec_command("echo 0 > /sys/devices/system/cpu/cpu1/online") |
| 132 | self.shell_exec_command( |
| 133 | "export CPU1_STATE=$(cat /sys/devices/system/cpu/cpu1/online)") |
| 134 | self.shell_exec_command_check_fail("[ $CPU1_STATE -eq 0 ]") |
| 135 | |
| 136 | # RX, TX interrupts to chip/cpu 2 & 3 respectively |
| 137 | self.shell_exec_command( |
| 138 | "export RX_IRQ=$(awk '/eth0-rx/ {print $1}' /proc/interrupts | tr -d ':')") |
| 139 | self.shell_exec_command( |
| 140 | "export TX_IRQ=$(awk '/eth0-tx/ {print $1}' /proc/interrupts | tr -d ':')") |
| 141 | self.shell_exec_command("echo 2 > /proc/irq/$RX_IRQ/smp_affinity_list") |
| 142 | self.shell_exec_command("echo 3 > /proc/irq/$TX_IRQ/smp_affinity_list") |
| 143 | |
| 144 | # Capture interrupt counts before generating traffic |
| 145 | self.shell_exec_command( |
| 146 | "export RX_BEFORE=$(awk '/eth0-rx/ {print $3}' /proc/interrupts)") |
| 147 | self.shell_exec_command( |
| 148 | "export TX_BEFORE=$(awk '/eth0-tx/ {print $4}' /proc/interrupts)") |
| 149 | |
| 150 | # Wait up to 15 seconds for eth0 link to come up |
| 151 | self.shell_exec_command( |
| 152 | "c=0; while ! ip addr show eth0 | grep 'inet 10.0.2'; do " |
| 153 | "sleep 1; c=$((c+1)); [ $c -gt 15 ] && break; done") |
| 154 | |
| 155 | self.shell_exec_command_check_fail( |
| 156 | "ip addr show eth0 | grep 'inet 10.0.2'") |
| 157 | |
| 158 | # Generate network traffic to trigger remote interrupts |
| 159 | # Ping QEMU's user-mode network gateway (10.0.2.2) |
| 160 | self.shell_exec_command("ping -W2 -c5 10.0.2.2") |
| 161 | |
| 162 | # Show final interrupt counts to verify remote interrupts occurred |
| 163 | self.shell_exec_command("cat /proc/interrupts | grep eth0") |
| 164 | |
| 165 | # Verify interrupt counts increased (whether interrupts were delivered) |
| 166 | self.shell_exec_command( |
| 167 | "export RX_AFTER=$(awk '/eth0-rx/ {print $3}' /proc/interrupts)") |
| 168 | self.shell_exec_command( |
| 169 | "export TX_AFTER=$(awk '/eth0-tx/ {print $4}' /proc/interrupts)") |
| 170 | |
| 171 | # Check that interrupt counts increased |
| 172 | self.shell_exec_command_check_fail("[ $RX_AFTER -gt $RX_BEFORE ]") |
| 173 | self.shell_exec_command_check_fail("[ $TX_AFTER -gt $TX_BEFORE ]") |
| 174 | |
| 175 | def test_linux_big_boot(self): |
| 176 | self.set_machine('powernv') |
| 177 | self.vm.add_args('-smp', '16,threads=4,cores=2,sockets=2') |
| 178 | |
| 179 | # powernv does not support NUMA |
| 180 | self.do_test_linux_boot() |
| 181 | console_pattern = 'CPU maps initialized for 4 threads per core' |
| 182 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 183 | console_pattern = 'smp: Brought up 2 nodes, 16 CPUs' |
| 184 | wait_for_console_pattern(self, console_pattern, self.panic_message) |
| 185 | wait_for_console_pattern(self, self.good_message, self.panic_message) |
| 186 | |
| 187 | def do_test_ppc64_powernv(self, proc): |
| 188 | self.require_accelerator("tcg") |
| 189 | kernel_path = self.ASSET_KERNEL.fetch() |
| 190 | initrd_path = self.ASSET_INITRD.fetch() |
| 191 | self.vm.set_console() |
| 192 | self.vm.add_args('-kernel', kernel_path, |
| 193 | '-drive', |
| 194 | f'file={initrd_path},format=raw,if=none,id=drive0,readonly=on', |
| 195 | '-append', 'root=/dev/nvme0n1 console=tty0 console=hvc0', |
| 196 | '-device', 'pcie-pci-bridge,id=bridge1,bus=pcie.1,addr=0x0', |
| 197 | '-device', 'nvme,drive=drive0,bus=pcie.2,addr=0x0,serial=1234', |
| 198 | '-device', 'e1000e,bus=bridge1,addr=0x3', |
| 199 | '-device', 'nec-usb-xhci,bus=bridge1,addr=0x2') |
| 200 | self.vm.launch() |
| 201 | |
| 202 | self.wait_for_console_pattern("CPU: " + proc + " generation processor") |
| 203 | self.wait_for_console_pattern("INIT: Starting kernel at ") |
| 204 | self.wait_for_console_pattern("Run /sbin/init as init process") |
| 205 | # Device detection output driven by udev probing is sometimes cut off |
| 206 | # from console output, suspect S14silence-console init script. |
| 207 | |
| 208 | def test_ppc64_powernv_external_dtb(self): |
| 209 | self.set_machine('powernv11') |
| 210 | self.require_accelerator("tcg") |
| 211 | |
| 212 | kernel_path = self.ASSET_KERNEL.fetch() |
| 213 | sample_dtb_path = self.ASSET_SAMPLE_DTB.fetch() |
| 214 | self.vm.set_console() |
| 215 | self.vm.add_args('-kernel', kernel_path, |
| 216 | '-dtb', sample_dtb_path) |
| 217 | self.vm.launch() |
| 218 | |
| 219 | # check if custom dtb is reflected or not |
| 220 | wait_for_console_pattern(self, "Kernel command line: hello world", self.panic_message) |
| 221 | |
| 222 | def test_powernv8(self): |
| 223 | self.set_machine('powernv8') |
| 224 | self.do_test_ppc64_powernv('P8') |
| 225 | |
| 226 | def test_powernv9(self): |
| 227 | self.set_machine('powernv9') |
| 228 | self.do_test_ppc64_powernv('P9') |
| 229 | |
| 230 | def test_powernv10(self): |
| 231 | self.set_machine('powernv10') |
| 232 | self.do_test_ppc64_powernv('P10') |
| 233 | |
| 234 | def test_powernv11(self): |
| 235 | self.set_machine('powernv11') |
| 236 | self.do_test_ppc64_powernv('Power11') |
| 237 | |
| 238 | if __name__ == '__main__': |
| 239 | LinuxKernelTest.main() |