ref: b016298a30de2a45facc7b9a2fb75bdd94eac29c
dir: /sys/src/boot/zynq/dat.h/
enum {
DHCPTIMEOUT = 2000,
ARPTIMEOUT = 1000,
TFTPTIMEOUT = 10000,
TZERO = 0x80000,
CONFSIZE = 65536,
CONF = TZERO - CONFSIZE,
};
#define nelem(x) (sizeof(x)/sizeof(*(x)))