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95 lines
1.8 KiB
95 lines
1.8 KiB
// 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 ([email protected]) |
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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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