96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* misc.c: Miscellaneous prom functions that don't belong
|
|
* anywhere else.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <asm/sun3-head.h>
|
|
#include <asm/idprom.h>
|
|
#include <asm/openprom.h>
|
|
#include <asm/oplib.h>
|
|
#include <asm/movs.h>
|
|
|
|
/* Reset and reboot the machine with the command 'bcommand'. */
|
|
void
|
|
prom_reboot(char *bcommand)
|
|
{
|
|
unsigned long flags;
|
|
local_irq_save(flags);
|
|
(*(romvec->pv_reboot))(bcommand);
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
/* Drop into the prom, with the chance to continue with the 'go'
|
|
* prom command.
|
|
*/
|
|
void
|
|
prom_cmdline(void)
|
|
{
|
|
}
|
|
|
|
/* Drop into the prom, but completely terminate the program.
|
|
* No chance of continuing.
|
|
*/
|
|
void
|
|
prom_halt(void)
|
|
{
|
|
unsigned long flags;
|
|
again:
|
|
local_irq_save(flags);
|
|
(*(romvec->pv_halt))();
|
|
local_irq_restore(flags);
|
|
goto again; /* PROM is out to get me -DaveM */
|
|
}
|
|
|
|
typedef void (*sfunc_t)(void);
|
|
|
|
/* Get the idprom and stuff it into buffer 'idbuf'. Returns the
|
|
* format type. 'num_bytes' is the number of bytes that your idbuf
|
|
* has space for. Returns 0xff on error.
|
|
*/
|
|
unsigned char
|
|
prom_get_idprom(char *idbuf, int num_bytes)
|
|
{
|
|
int i, oldsfc;
|
|
GET_SFC(oldsfc);
|
|
SET_SFC(FC_CONTROL);
|
|
for(i=0;i<num_bytes; i++)
|
|
{
|
|
/* There is a problem with the GET_CONTROL_BYTE
|
|
macro; defining the extra variable
|
|
gets around it.
|
|
*/
|
|
int c;
|
|
GET_CONTROL_BYTE(SUN3_IDPROM_BASE + i, c);
|
|
idbuf[i] = c;
|
|
}
|
|
SET_SFC(oldsfc);
|
|
return idbuf[0];
|
|
}
|
|
|
|
/* Get the major prom version number. */
|
|
int
|
|
prom_version(void)
|
|
{
|
|
return romvec->pv_romvers;
|
|
}
|
|
|
|
/* Get the prom plugin-revision. */
|
|
int
|
|
prom_getrev(void)
|
|
{
|
|
return prom_rev;
|
|
}
|
|
|
|
/* Get the prom firmware print revision. */
|
|
int
|
|
prom_getprev(void)
|
|
{
|
|
return prom_prev;
|
|
}
|