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#ifndef _GPXE_INIT_H
#define _GPXE_INIT_H
#include <gpxe/tables.h>
/*
* In order to avoid having objects dragged in just because main()
* calls their initialisation function, we allow each object to
* specify that it has a function that must be called to initialise
* that object. The function call_init_fns() will call all the
* included objects' initialisation functions.
*
* Objects that require initialisation should include init.h and
* register the initialisation function using INIT_FN().
*
* Objects may register up to three functions: init, reset and exit.
* init gets called only once, at the point that Etherboot is
* initialised (before the call to main()). reset gets called between
* each boot attempt. exit gets called only once, just before the
* loaded OS starts up (or just before Etherboot exits, if it exits,
* or when the PXE NBP calls UNDI_SHUTDOWN, if it's a PXE NBP).
*
* The syntax is:
* INIT_FN ( init_order, init_function, reset_function, exit_function );
* where init_order is an ordering taken from the list below. Any
* function may be left as NULL.
*/
/* An entry in the initialisation function table */
struct init_fn {
void ( *init ) ( void );
void ( *reset ) ( void );
void ( *exit ) ( void );
};
/* Use double digits to avoid problems with "10" < "9" on alphabetic sort */
#define INIT_CONSOLE 02
#define INIT_CPU 03
#define INIT_TIMERS 04
#define INIT_LOADBUF 08
#define INIT_PCMCIA 09
#define INIT_RPC 11
#define INIT_PROCESS 12
/* Macro for creating an initialisation function table entry */
#define INIT_FN( init_order, init_func, reset_func, exit_func ) \
struct init_fn PREFIX_OBJECT(init_fn__) \
__table ( init_fn, init_order ) = { \
.init = init_func, \
.reset = reset_func, \
.exit = exit_func, \
};
/* Function prototypes */
void call_init_fns ( void );
void call_reset_fns ( void );
void call_exit_fns ( void );
#endif /* _GPXE_INIT_H */
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