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