kunit: qemu_configs: Add MIPS configurations

Add basic support to run various MIPS variants via kunit_tool using the
virtualized malta platform.

Link: https://lore.kernel.org/r/20250908-kunit-mips-v5-1-d9f0632d1854@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: t-8ch

tools/testing/kunit/qemu_configs/mips.py

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='mips',
+                           kconfig='''
+CONFIG_32BIT=y
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_MIPS_MALTA=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+''',
+                           qemu_arch='mips',
+                           kernel_path='vmlinuz',
+                           kernel_command_line='console=ttyS0',
+                           extra_qemu_params=['-M', 'malta'])

tools/testing/kunit/qemu_configs/mips64.py

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='mips',
+                           kconfig='''
+CONFIG_CPU_MIPS64_R2=y
+CONFIG_64BIT=y
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_MIPS_MALTA=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+''',
+                           qemu_arch='mips64',
+                           kernel_path='vmlinuz',
+                           kernel_command_line='console=ttyS0',
+                           extra_qemu_params=['-M', 'malta', '-cpu', '5KEc'])

tools/testing/kunit/qemu_configs/mips64el.py

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='mips',
+                           kconfig='''
+CONFIG_CPU_MIPS64_R2=y
+CONFIG_64BIT=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_MIPS_MALTA=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+''',
+                           qemu_arch='mips64el',
+                           kernel_path='vmlinuz',
+                           kernel_command_line='console=ttyS0',
+                           extra_qemu_params=['-M', 'malta', '-cpu', '5KEc'])

tools/testing/kunit/qemu_configs/mipsel.py

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='mips',
+                           kconfig='''
+CONFIG_32BIT=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_MIPS_MALTA=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+''',
+                           qemu_arch='mipsel',
+                           kernel_path='vmlinuz',
+                           kernel_command_line='console=ttyS0',
+                           extra_qemu_params=['-M', 'malta'])