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openprom.h

#ifndef __SPARC_OPENPROM_H
#define __SPARC_OPENPROM_H

/* openprom.h:  Prom structures and defines for access to the OPENBOOT
 *              prom routines and data areas.
 *
 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
 */


/* Empirical constants... */
#ifdef CONFIG_SUN3
#define KADB_DEBUGGER_BEGVM     0x0fee0000    /* There is no kadb yet but...*/
#define LINUX_OPPROM_BEGVM      0x0fef0000
#define LINUX_OPPROM_ENDVM      0x0ff10000    /* I think this is right - tm */
#else
#define KADB_DEBUGGER_BEGVM     0xffc00000    /* Where kern debugger is in virt-mem */
#define     LINUX_OPPROM_BEGVM      0xffd00000
#define     LINUX_OPPROM_ENDVM      0xfff00000
#define     LINUX_OPPROM_MAGIC      0x10010407
#endif

#ifndef __ASSEMBLY__
/* V0 prom device operations. */
00025 struct linux_dev_v0_funcs {
      int (*v0_devopen)(char *device_str);
      int (*v0_devclose)(int dev_desc);
      int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
      int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
      int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
      int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
      int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
      int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
      int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
};

/* V2 and later prom device operations. */
00038 struct linux_dev_v2_funcs {
      int (*v2_inst2pkg)(int d);    /* Convert ihandle to phandle */
      char * (*v2_dumb_mem_alloc)(char *va, unsigned sz);
      void (*v2_dumb_mem_free)(char *va, unsigned sz);

      /* To map devices into virtual I/O space. */
      char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz);
      void (*v2_dumb_munmap)(char *virta, unsigned size);

      int (*v2_dev_open)(char *devpath);
      void (*v2_dev_close)(int d);
      int (*v2_dev_read)(int d, char *buf, int nbytes);
      int (*v2_dev_write)(int d, char *buf, int nbytes);
      int (*v2_dev_seek)(int d, int hi, int lo);

      /* Never issued (multistage load support) */
      void (*v2_wheee2)(void);
      void (*v2_wheee3)(void);
};

00058 struct linux_mlist_v0 {
      struct linux_mlist_v0 *theres_more;
      char *start_adr;
      unsigned num_bytes;
};

00064 struct linux_mem_v0 {
      struct linux_mlist_v0 **v0_totphys;
      struct linux_mlist_v0 **v0_prommap;
      struct linux_mlist_v0 **v0_available; /* What we can use */
};

/* Arguments sent to the kernel from the boot prompt. */
00071 struct linux_arguments_v0 {
      char *argv[8];
      char args[100];
      char boot_dev[2];
      int boot_dev_ctrl;
      int boot_dev_unit;
      int dev_partition;
      char *kernel_file_name;
      void *aieee1;           /* XXX */
};

/* V2 and up boot things. */
00083 struct linux_bootargs_v2 {
      char **bootpath;
      char **bootargs;
      int *fd_stdin;
      int *fd_stdout;
};

#if defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
struct linux_romvec {
      char        *pv_initsp;
      int         (*pv_startmon)(void);

      int         *diagberr;

      struct linux_arguments_v0 **pv_v0bootargs;
      unsigned    *pv_sun3mem;

      unsigned char     (*pv_getchar)(void);
      int         (*pv_putchar)(int ch);
      int         (*pv_nbgetchar)(void);
      int         (*pv_nbputchar)(int ch);
      unsigned char     *pv_echo;
      unsigned char     *pv_insource;
      unsigned char     *pv_outsink;

      int         (*pv_getkey)(void);
      int         (*pv_initgetkey)(void);
      unsigned int      *pv_translation;
      unsigned char     *pv_keybid;
      int         *pv_screen_x;
      int         *pv_screen_y;
      struct keybuf     *pv_keybuf;

      char        *pv_monid;

      /*
       * Frame buffer output and terminal emulation
       */

      int         (*pv_fbwritechar)(char);
      int         *pv_fbaddr;
      char        **pv_font;
      int         (*pv_fbwritestr)(char);

      void        (*pv_reboot)(char *bootstr);

      /*
       * Line input and parsing
       */

      unsigned char     *pv_linebuf;
      unsigned char     **pv_lineptr;
      int         *pv_linesize;
      int         (*pv_getline)(void);
      unsigned char     (*pv_getnextchar)(void);
      unsigned char     (*pv_peeknextchar)(void);
      int         *pv_fbthere;
      int         (*pv_getnum)(void);

      void        (*pv_printf)(const char *fmt, ...);
      int         (*pv_printhex)(void);

      unsigned char     *pv_leds;
      int         (*pv_setleds)(void);

      /*
       * Non-maskable interrupt  (nmi) information
       */

      int         (*pv_nmiaddr)(void);
      int         (*pv_abortentry)(void);
      int         *pv_nmiclock;

      int         *pv_fbtype;

      /*
       * Assorted other things
       */

      unsigned    pv_romvers;
      struct globram  *pv_globram;
      char        *pv_kbdzscc;

      int         *pv_keyrinit;
      unsigned char     *pv_keyrtick;
      unsigned    *pv_memoryavail;
      long        *pv_resetaddr;
      long        *pv_resetmap;

      void        (*pv_halt)(void);
      unsigned char     *pv_memorybitmap;

#ifdef CONFIG_SUN3
      void        (*pv_setctxt)(int ctxt, char *va, int pmeg);
      void        (*pv_vector_cmd)(void);
      int         dummy1z;
      int         dummy2z;
      int         dummy3z;
      int         dummy4z;
#endif
};
#else
/* The top level PROM vector. */
00186 struct linux_romvec {
      /* Version numbers. */
      unsigned int pv_magic_cookie;
      unsigned int pv_romvers;
      unsigned int pv_plugin_revision;
      unsigned int pv_printrev;

      /* Version 0 memory descriptors. */
      struct linux_mem_v0 pv_v0mem;

      /* Node operations. */
      struct linux_nodeops *pv_nodeops;

      char **pv_bootstr;
      struct linux_dev_v0_funcs pv_v0devops;

      char *pv_stdin;
      char *pv_stdout;
#define     PROMDEV_KBD 0           /* input from keyboard */
#define     PROMDEV_SCREEN    0           /* output to screen */
#define     PROMDEV_TTYA      1           /* in/out to ttya */
#define     PROMDEV_TTYB      2           /* in/out to ttyb */

      /* Blocking getchar/putchar.  NOT REENTRANT! (grr) */
      int (*pv_getchar)(void);
      void (*pv_putchar)(int ch);

      /* Non-blocking variants. */
      int (*pv_nbgetchar)(void);
      int (*pv_nbputchar)(int ch);

      void (*pv_putstr)(char *str, int len);

      /* Miscellany. */
      void (*pv_reboot)(char *bootstr);
      void (*pv_printf)(__const__ char *fmt, ...);
      void (*pv_abort)(void);
      __volatile__ int *pv_ticks;
      void (*pv_halt)(void);
      void (**pv_synchook)(void);

      /* Evaluate a forth string, not different proto for V0 and V2->up. */
      union {
            void (*v0_eval)(int len, char *str);
            void (*v2_eval)(char *str);
      } pv_fortheval;

      struct linux_arguments_v0 **pv_v0bootargs;

      /* Get ether address. */
      unsigned int (*pv_enaddr)(int d, char *enaddr);

      struct linux_bootargs_v2 pv_v2bootargs;
      struct linux_dev_v2_funcs pv_v2devops;

      int filler[15];

      /* This one is sun4c/sun4 only. */
      void (*pv_setctxt)(int ctxt, char *va, int pmeg);

      /* Prom version 3 Multiprocessor routines. This stuff is crazy.
       * No joke. Calling these when there is only one cpu probably
       * crashes the machine, have to test this. :-)
       */

      /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
       * 'thiscontext' executing at address 'prog_counter'
       */
      int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
                     int thiscontext, char *prog_counter);

      /* v3_cpustop() will cause cpu 'whichcpu' to stop executing
       * until a resume cpu call is made.
       */
      int (*v3_cpustop)(unsigned int whichcpu);

      /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
       * resume cpu call is made.
       */
      int (*v3_cpuidle)(unsigned int whichcpu);

      /* v3_cpuresume() will resume processor 'whichcpu' executing
       * starting with whatever 'pc' and 'npc' were left at the
       * last 'idle' or 'stop' call.
       */
      int (*v3_cpuresume)(unsigned int whichcpu);
};
#endif

/* Routines for traversing the prom device tree. */
00276 struct linux_nodeops {
      int (*no_nextnode)(int node);
      int (*no_child)(int node);
      int (*no_proplen)(int node, char *name);
      int (*no_getprop)(int node, char *name, char *val);
      int (*no_setprop)(int node, char *name, char *val, int len);
      char * (*no_nextprop)(int node, char *name);
};

/* More fun PROM structures for device probing. */
#define PROMREG_MAX     16
#define PROMVADDR_MAX   16
#define PROMINTR_MAX    15

00290 struct linux_prom_registers {
      int which_io;         /* is this in OBIO space? */
      char *phys_addr;      /* The physical address of this register */
      int reg_size;         /* How many bytes does this register take up? */
};

00296 struct linux_prom_irqs {
      int pri;    /* IRQ priority */
      int vector; /* This is foobar, what does it do? */
};

/* Element of the "ranges" vector */
00302 struct linux_prom_ranges {
      unsigned int ot_child_space;
      unsigned int ot_child_base;         /* Bus feels this */
      unsigned int ot_parent_space;
      unsigned int ot_parent_base;        /* CPU looks from here */
      unsigned int or_size;
};

#endif /* !(__ASSEMBLY__) */

#endif /* !(__SPARC_OPENPROM_H) */

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