ref: bb1a24b22e7fea0d39af635dd28dc7f9d2ebbae6
dir: /sys/src/9/bcm/pif/
dev root cons env pipe proc mnt srv shr dup arch ssl tls cap fs ip arp chandial ip ipv6 ipaux iproute netlog nullmedium pktmedium ptclbsum inferno draw screen swcursor mouse mouse uart gpio sd usb link ethermedium loopbackmedium netdevmedium archbcm usbdwc ip tcp udp ipifc icmp icmp6 ipmux il misc uartmini sdmmc emmc dma vcore vfp3 coproc port int cpuserver = 0; bootdir /$objtype/bin/paqfs /$objtype/bin/auth/factotum bootfs.paq boot