ref: d09e5a7af724cbb2df7a066a805cf6c8303a4b39
dir: /sys/src/9/bcm/pi2/
dev root cons swap env pipe proc mnt srv shr dup arch tls cap fs bridge log ip arp chandial ip ipv6 ipaux iproute netlog nullmedium pktmedium inferno draw screen swcursor mouse mouse uart gpio gpio gpio sd usb link archbcm2 usbdwc ethermedium loopbackmedium netdevmedium ip tcp udp ipifc icmp icmp6 ipmux misc armv7 uartmini sdmmc emmc dma vcore vfp3 coproc irq port int cpuserver = 0; bootdir /$objtype/bin/paqfs /$objtype/bin/auth/factotum bootfs.paq boot