WIP: Userspace LL ztest

[lgirdwood]

Very basic/simple ztest to start with user LL. For developers only, lots still todo. Includes qemu support for dc233c atm.

(.venv) lrg@moth:~/work/sof/build-qemu_xtensa_mmu$ west build -t run
-- west build: running target run
[0/27] cmake -P /home/lrg/work/sof/sof/scripts/cmake/version.cmake
-- SOF version.cmake starting at 2026-02-24T20:54:21Z UTC
-- /home/lrg/work/sof/sof/ is at git commit with parent(s):
commit 31248867b7d03507a44c4383bbfeb91993ad0254 7bee513d082b5e058f2accb3bde00c2c7907b439 (HEAD -> qemudc233c-pipe, lrg/qemudc233c, qemudc233c)
Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Date:   Tue Feb 24 15:38:55 2026 +0000

    boot tests: add support for running boot tests on qemu simulator
    
    Call directly here as more qemu target wont simulate IPC which is used
    as entry for testing on HW.
    
    Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
-- GIT_TAG / GIT_LOG_HASH : v2.14-pre-rc-427-g31248867b7d0-dirty / 31248867b
-- Source content hash: 412cbc68. Notes:
  - by design, source hash is broken by Kconfig changes. See #3890.
  - Source hash is also broken by _asymmetric_ autocrlf=input, see
    #5917 and reverted #5920.
-- Unchanged /home/lrg/work/sof/build-qemu_xtensa_mmu/zephyr/include/generated/sof_versions.h
[1/2] To exit from QEMU enter: 'CTRL+a, x'[QEMU] CPU: dc233c
[    0.017126] <inf> init: FW ABI 0x301d001 DBG ABI 0x5003000 tags SOF:v2.14-pre-rc-427-g31248867b7d0-dirty zephyr:v4.3.0-5654-gf6a32b27dc17 src hash 0x412cbc68 (ref hash 0x412cbc68)
[    0.022360] <inf> ipc: SOF_BOOT_TEST_STANDALONE, disabling IPC.
*** Booting Zephyr OS build v4.3.0-5654-gf6a32b27dc17 ***
[    0.022566] <inf> main: SOF on qemu_xtensa
[    0.022584] <inf> main: SOF initialized
Running TESTSUITE sof_boot
===================================================================
START - test_sys_sem
[    0.028553] <inf> sof_boot_test: SOF thread UserSpace! (qemu_xtensa/dc233c/mmu) sem 0x1aa000: 0
 PASS - test_sys_sem in 0.007 seconds
===================================================================
START - user_space
[    0.129540] <inf> sof_boot_test: SOF thread UserSpace! (qemu_xtensa/dc233c/mmu)
[    0.140062] <inf> sof_boot_test: SOF thread UserSpace! (qemu_xtensa/dc233c/mmu)
 PASS - user_space in 0.012 seconds
===================================================================
TESTSUITE sof_boot succeeded
Running TESTSUITE userspace_ipc4_pipeline
===================================================================
START - test_pipeline_create_destroy_handlers
[    0.241230] <inf> sof_boot_test: Starting IPC4 pipeline test (handlers)
[    0.241251] <inf> pipe: pipeline new pipe_id 2 priority 0
[    0.241376] <inf> sof_boot_test: IPC4 pipeline test (handlers) complete
 PASS - test_pipeline_create_destroy_handlers in 0.001 seconds
===================================================================
START - test_pipeline_create_destroy_helpers
[    0.341912] <inf> sof_boot_test: Starting IPC4 pipeline test (helpers)
[    0.341931] <inf> pipe: pipeline new pipe_id 1 priority 0
[    0.342072] <inf> sof_boot_test: IPC4 pipeline test (helpers) complete
 PASS - test_pipeline_create_destroy_helpers in 0.001 seconds
===================================================================
TESTSUITE userspace_ipc4_pipeline succeeded
Running TESTSUITE userspace_ll
===================================================================
START - ll_task_test
 SKIP - ll_task_test in 0.001 seconds
===================================================================
TESTSUITE userspace_ll succeeded
Running TESTSUITE userspace_mailbox
===================================================================
START - mailbox_test
 SKIP - mailbox_test in 0.001 seconds
===================================================================
TESTSUITE userspace_mailbox succeeded

------ TESTSUITE SUMMARY START ------

SUITE PASS - 100.00% [sof_boot]: pass = 2, fail = 0, skip = 0, total = 2 duration = 0.019 seconds
 - PASS - [sof_boot.test_sys_sem] duration = 0.007 seconds
 - PASS - [sof_boot.user_space] duration = 0.012 seconds

SUITE PASS - 100.00% [userspace_ipc4_pipeline]: pass = 2, fail = 0, skip = 0, total = 2 duration = 0.002 seconds
 - PASS - [userspace_ipc4_pipeline.test_pipeline_create_destroy_handlers] duration = 0.001 seconds
 - PASS - [userspace_ipc4_pipeline.test_pipeline_create_destroy_helpers] duration = 0.001 seconds

SUITE SKIP -   0.00% [userspace_ll]: pass = 0, fail = 0, skip = 1, total = 1 duration = 0.001 seconds
 - SKIP - [userspace_ll.ll_task_test] duration = 0.001 seconds

SUITE SKIP -   0.00% [userspace_mailbox]: pass = 0, fail = 0, skip = 1, total = 1 duration = 0.001 seconds
 - SKIP - [userspace_mailbox.mailbox_test] duration = 0.001 seconds

------ TESTSUITE SUMMARY END ------

===================================================================
PROJECT EXECUTION SUCCESSFUL
QEMU: Terminated