tests/functional: Replace the ppc64 e500 advent calendar test

Replace the advent calendar test with a buildroot image built with
qemu_ppc64_e5500_defconfig. Unlike the advent calendar image, this
newer buildroot image supports networking, too. Thus boot a ppce500
machine from kernel and disk, test network and poweroff.
Add '-no-shutdown' to the command line to avoid exiting from QEMU
as it seems to bother the functional framework.

Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20250226065013.196052-1-clg@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Add some wording about network support to the commit message]
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/functional/test_ppc64_e500.py

@@ -5,20 +5,39 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 
 from qemu_test import LinuxKernelTest, Asset
+from qemu_test import exec_command_and_wait_for_pattern
 
 
 class E500Test(LinuxKernelTest):
 
-    ASSET_DAY19 = Asset(
-        'https://qemu-advcal.gitlab.io/qac-best-of-multiarch/download/day19.tar.xz',
-        '20b1bb5a8488c664defbb5d283addc91a05335a936c63b3f5ff7eee74b725755')
+    ASSET_BR2_E5500_UIMAGE = Asset(
+        'https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main/buildroot/qemu_ppc64_e5500-2023.11-8-gdcd9f0f6eb-20240104/uImage',
+        '2478187c455d6cca3984e9dfde9c635d824ea16236b85fd6b4809f744706deda')
 
-    def test_ppc64_e500(self):
+    ASSET_BR2_E5500_ROOTFS = Asset(
+        'https://github.com/legoater/qemu-ppc-boot/raw/refs/heads/main//buildroot/qemu_ppc64_e5500-2023.11-8-gdcd9f0f6eb-20240104/rootfs.ext2',
+        '9035ef97237c84c7522baaff17d25cdfca4bb7a053d5e296e902919473423d76')
+
+    def test_ppc64_e500_buildroot(self):
         self.set_machine('ppce500')
         self.cpu = 'e5500'
-        self.archive_extract(self.ASSET_DAY19)
-        self.launch_kernel(self.scratch_file('day19', 'uImage'),
-                           wait_for='QEMU advent calendar')
+
+        uimage_path = self.ASSET_BR2_E5500_UIMAGE.fetch()
+        rootfs_path = self.ASSET_BR2_E5500_ROOTFS.fetch()
+
+        self.vm.set_console()
+        self.vm.add_args('-kernel', uimage_path,
+                         '-append', 'root=/dev/vda',
+                         '-drive', f'file={rootfs_path},if=virtio,format=raw',
+                         '-snapshot', '-no-shutdown')
+        self.vm.launch()
+
+        self.wait_for_console_pattern('Linux version')
+        self.wait_for_console_pattern('/init as init process')
+        self.wait_for_console_pattern('lease of 10.0.2.15')
+        self.wait_for_console_pattern('buildroot login:')
+        exec_command_and_wait_for_pattern(self, 'root', '#')
+        exec_command_and_wait_for_pattern(self, 'poweroff', 'Power down')
 
 if __name__ == '__main__':
     LinuxKernelTest.main()