040000 tree 68f2c46b56a1f91c2944bc897792a798c9109fb4	drivers
040000 tree 2d875e8aea28b239ed700842a4c0de0e01cca3ef	ipc
040000 tree 47234623127d1e9e87eadf812520fe649f16277f	threads
040000 tree 75b8701d9216ffbb0ad417c874a01f15580880eb	uart
040000 tree 48f2e2e6ae3521d070d09ec666b466d339d9566b	unittest_runner