51 lines
1.3 KiB
C
Executable File
51 lines
1.3 KiB
C
Executable File
/*
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* Copyright (c) 1987, 1990 by Sun Microsystems, Inc.
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*/
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#ifndef _SYS_ENABLE_H
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#define _SYS_ENABLE_H
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#pragma ident "@(#)enable.h 1.12 93/05/26 SMI"
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/* From SunOS 4.1.1 sun4/enable.h 1.5 */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* The System Enable register controls overall
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* operation of the system. When the system is
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* reset, the Enable register is cleared. The
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* enable register is addressed as a byte in
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* ASI_CTL space.
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*/
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/*
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* Bits of the Enable Register
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*/
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#define ENA_DIAG 0x01 /* r/o - diag switch, 1 = on */
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#define ENA_MONITOR 0x01 /* w/o - monitor bit */
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#define ENA_VMERESET 0x02 /* r/w - reset the vme */
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#define ENA_CACHERESET 0x04 /* r/w - reset the cache */
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#define ENA_VIDEO 0x08 /* r/w - enable video memory */
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#define ENA_CACHE 0x10 /* r/w - enable external cache */
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#define ENA_SDVMA 0x20 /* r/w - enable system DVMA */
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#define ENA_IOCACHE 0x40 /* r/w - enable i/o cache */
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#define ENA_NOTBOOT 0x80 /* r/w - non-boot state, 1 = normal */
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#define ENABLEREG 0x40000000 /* addr in ASI_CTL space */
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#if defined(_KERNEL) && !defined(_ASM)
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extern void on_enablereg(unsigned char);
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extern void off_enablereg(unsigned char);
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extern unsigned char get_enablereg(void);
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#endif /* _KERNEL && !_ASM */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ENABLE_H */
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