ref: 4dcbf96833d0b11a3d4c9984c9998f380e194e74
dir: /sys/src/9/boot/boot.h/
enum {
Debug = 0,
};
extern void fatal(char*);
extern int readfile(char*, char*, int);
extern void run(char*, ...);
extern void setenv(char*, char*, int);
extern int writefile(char*, char*, int);