ref: 65bd53b9b89b0a84d0f16db4adc3f53fa6ab3a3a dir: /sys/src/9/bcm64/init9.s/
TEXT main(SB), 1, $8 MOV $setSB(SB), R28 /* load the SB */ MOV $boot(SB), R0 B startboot(SB)