[PATCH v2 0/5] microblaze: KUnit support

[Thomas Weißschuh]

Add the necessary prerequisites and configuration to run KUnit on
microblaze.

Please note that various KUnit tests might fail depending on the
kernel configuration as the memmove() implementation from
arch/microblaze/lib/memmove.c seems to be broken.

gpu_buddy.gpu_test_buddy_alloc_exceeds_max_order is currently also
broken.

Intended for the microblaze tree.

Signed-off-by: Thomas Weißschuh <li...@weissschuh.net>
---
Changes in v2:
- Rebase on v7.3-rc1.
- Pick up review tags.
- Move do_kernel_power_off() after the message printing.
- Little endian support.
- Link to v1: https://patch.msgid.link/20260804-kunit-microb...@weissschuh.net

---
Thomas Weißschuh (5):
microblaze: uaccess: Zero out destination on failed get_user()
microblaze: Pass -m{big,little}-endian through KBUILD_CPPFLAGS
microblaze: reset: Call POWER_OFF handlers
microblaze: reset: Provide a power off handler through an unaligned PC
kunit: qemu_configs: Add microblaze configurations

arch/microblaze/Kconfig | 9 ++++++++
arch/microblaze/Makefile | 6 ++---
arch/microblaze/include/asm/uaccess.h | 3 ++-
arch/microblaze/kernel/reset.c | 22 +++++++++++++++++++
tools/testing/kunit/qemu_configs/microblazebe.py | 24 ++++++++++++++++++++
tools/testing/kunit/qemu_configs/microblazeel.py | 28 ++++++++++++++++++++++++
6 files changed, 87 insertions(+), 5 deletions(-)
---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260802-kunit-microblaze-7a3f6ac88b4d

Best regards,
--
Thomas Weißschuh <li...@weissschuh.net>

[Thomas Weißschuh]

Add basic configurations to run kunit tests on big and little endian
microblaze.

Suggested-by: Michal Simek <mon...@monstr.eu>
Link: https://lore.kernel.org/lkml/5cd8df03-ad51-460c...@amd.com/
Signed-off-by: Thomas Weißschuh <li...@weissschuh.net>
Reviewed-by: David Gow <da...@davidgow.net>
---

tools/testing/kunit/qemu_configs/microblazebe.py | 24 ++++++++++++++++++++
tools/testing/kunit/qemu_configs/microblazeel.py | 28 ++++++++++++++++++++++++

2 files changed, 52 insertions(+)

diff --git a/tools/testing/kunit/qemu_configs/microblazebe.py b/tools/testing/kunit/qemu_configs/microblazebe.py
new file mode 100644
index 000000000000..f37b7af20142
--- /dev/null
+++ b/tools/testing/kunit/qemu_configs/microblazebe.py
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: GPL-2.0-only
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='microblaze',
+ kconfig='''
+CONFIG_KERNEL_BASE_ADDR=0x90000000
+CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
+CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1
+CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
+CONFIG_XILINX_MICROBLAZE0_USE_DIV=0
+CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=1
+CONFIG_XILINX_MICROBLAZE0_USE_FPU=0
+CONFIG_CPU_BIG_ENDIAN=y
+CONFIG_SERIAL_UARTLITE=y
+CONFIG_SERIAL_UARTLITE_CONSOLE=y
+CONFIG_MB_POWER_OFF_THROUGH_UNALIGNED_PC=y
+''',
+ qemu_arch='microblaze',
+ kernel_path='arch/microblaze/boot/linux.bin',
+ kernel_command_line='kunit_shutdown=poweroff',
+ extra_qemu_params=[
+ '-M', 'petalogix-s3adsp1800',
+ ],
+)
diff --git a/tools/testing/kunit/qemu_configs/microblazeel.py b/tools/testing/kunit/qemu_configs/microblazeel.py
new file mode 100644
index 000000000000..25db2052db06
--- /dev/null
+++ b/tools/testing/kunit/qemu_configs/microblazeel.py
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-2.0-only
+from ..qemu_config import QemuArchParams
+
+QEMU_ARCH = QemuArchParams(linux_arch='microblaze',
+ kconfig='''
+CONFIG_KERNEL_BASE_ADDR=0x50000000
+CONFIG_XILINX_MICROBLAZE0_FAMILY="virtex5"
+CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
+CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1
+CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
+CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
+CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2
+CONFIG_XILINX_MICROBLAZE0_USE_FPU=1
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_16550A_VARIANTS=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_MB_POWER_OFF_THROUGH_UNALIGNED_PC=y
+''',
+ qemu_arch='microblaze',
+ kernel_path='arch/microblaze/boot/linux.bin',
+ kernel_command_line='kunit_shutdown=poweroff',
+ extra_qemu_params=[
+ '-M', 'petalogix-ml605',
+ ],
+)
+

--
2.55.0

[Michal Simek]

Applied.

Thanks,
Michal

--
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP/Versal ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal/Versal NET SoCs
TF-A maintainer - Xilinx ZynqMP/Versal/Versal NET SoCs