RT-Thread/rt-thread: https://github.com/RT-Thread/rt-thread.git @ 325ddd2ab76f3ef5e0604df2687a3b4c486eede4

peilaus alkaen https://github-proxy.rt-thread.io/RT-Thread/rt-thread.git

wusongjie 3b7e46de7e AArch64: support hardware atomic		2 vuotta sitten
..
common	3b7e46de7e AArch64: support hardware atomic	2 vuotta sitten
cortex-a	e0b2b8fecd 修复aarch64 smp启动失败问题 (#7760)	2 vuotta sitten
SConscript	fb8c7829a8 add raspi4 bsp	5 vuotta sitten