prom_getenv
prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev,
prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo.boot_flags,
prom_getenv(PROM_E_BOOTED_FILE, bootinfo.booted_kernel,
prom_getenv(PROM_E_BOOTED_DEV, bootinfo.booted_dev,
prom_getenv(PROM_E_SCSIID, dec_3000_scsiid,
prom_getenv(PROM_E_SCSIFAST, dec_3000_scsifast,
prom_getenv(PROM_E_TTY_DEV, buf, sizeof(buf));
int prom_getenv(int, char *, int);
prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));
prom_getenv(PROM_E_BOOTED_OSFLAGS, boot_flags, sizeof(boot_flags));
devlen = prom_getenv(PROM_E_BOOTED_DEV, booted_dev_name,
prom_getenv(PROM_E_TTY_DEV, buf, sizeof(buf));
char * (*prom_getenv)(const char *name);
char *prom_getenv(const char *);
oscon = prom_getenv("osconsole");
cp = prom_getenv("systype");
cp = prom_getenv(scsiid_var);
cp = prom_getenv("bitmaplen");
cp = prom_getenv("bitmap");