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// 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;
}
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