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Annotation of 43BSDReno/sys/tahoe/cp.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  *     @(#)cp.h        7.1 (Berkeley) 5/21/88
                      3:  */
                      4: 
                      5: /*
                      6:  * Tahoe console processor interface
                      7:  */
                      8: 
                      9: /*
                     10:  * Reduced DCB layout for byte communication.
                     11:  */
                     12: #define        CPBUFLEN 200            /* Output buffer length */
                     13: #ifndef        LOCORE
                     14: struct cphdr {
                     15:        char    cp_unit;        /* Done bit & unit # */
                     16:        char    cp_comm;        /* Command */
                     17:        short   cp_count;       /* Counter (when relevant) */
                     18: };
                     19: 
                     20: struct cpdcb_o {               /* Output structure */
                     21:        struct  cphdr   cp_hdr;
                     22:        char    cp_buf[CPBUFLEN]; /* Buffer for output or 'stty' */
                     23: };
                     24: 
                     25: struct cpdcb_i {               /* Structure for input */
                     26:        struct  cphdr   cp_hdr;
                     27:        char    cpi_buf[4];     /* Buffer for input */
                     28: };
                     29: #endif
                     30: 
                     31: #define        CPDONE  0x80            /* 'Done' bit in cp_unit */
                     32: #define        CPTAKE  0x40            /* CP 'ack' to this cpdcb */
                     33: 
                     34: /* unit values */
                     35: #define        CPUNIT  0               /* the CP itself */
                     36: #define        CPCONS  1               /* console line */
                     37: #define        CPREMOT 2               /* remote line */
                     38: #define        CPCLOCK 4               /* realtime clock */
                     39: 
                     40: /* commands */
                     41: #define        CPRESET 0
                     42: #define        CPWRITE 1               /* write device or register */
                     43: #define        CPREAD  2               /* read device or register */
                     44: #define        CPSTTY  3               /* set terminal configuration */
                     45: #define        CPBOOT  4               /* reboot system */
                     46: 
                     47: /*
                     48:  *     CP specific locations
                     49:  */
                     50: #define        CPBFLG  0xc0000500      /* System bootflag flags */
                     51: #define        CPYFLG  0xc0000504      /* Copy of the Y flag */
                     52: #define        CPOPTS  0xc0000508      /* copy of CP options */
                     53: #define CPRSRV 0xc000050c      /* reserved for CP usage */
                     54: #define        CPBDEV  0xc0000510      /* Bootstrap device, saved on boot */
                     55: #define        CPEDEV  0xc000052f      /* End of device name */
                     56: 
                     57: #if !defined(LOCORE) && defined(KERNEL)
                     58: struct cphdr *cnlast;          /* last command sent to cp */
                     59: #endif

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