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Linux/arch/m68k/include/asm/openprom.h

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  1 #ifndef __SPARC_OPENPROM_H
  2 #define __SPARC_OPENPROM_H
  3 
  4 /* openprom.h:  Prom structures and defines for access to the OPENBOOT
  5  *              prom routines and data areas.
  6  *
  7  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  8  */
  9 
 10 
 11 /* Empirical constants... */
 12 #ifdef CONFIG_SUN3
 13 #define KADB_DEBUGGER_BEGVM     0x0fee0000    /* There is no kadb yet but...*/
 14 #define LINUX_OPPROM_BEGVM      0x0fef0000
 15 #define LINUX_OPPROM_ENDVM      0x0ff10000    /* I think this is right - tm */
 16 #else
 17 #define KADB_DEBUGGER_BEGVM     0xffc00000    /* Where kern debugger is in virt-mem */
 18 #define LINUX_OPPROM_BEGVM      0xffd00000
 19 #define LINUX_OPPROM_ENDVM      0xfff00000
 20 #define LINUX_OPPROM_MAGIC      0x10010407
 21 #endif
 22 
 23 #ifndef __ASSEMBLY__
 24 /* V0 prom device operations. */
 25 struct linux_dev_v0_funcs {
 26         int (*v0_devopen)(char *device_str);
 27         int (*v0_devclose)(int dev_desc);
 28         int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
 29         int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
 30         int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
 31         int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
 32         int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
 33         int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
 34         int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
 35 };
 36 
 37 /* V2 and later prom device operations. */
 38 struct linux_dev_v2_funcs {
 39         int (*v2_inst2pkg)(int d);      /* Convert ihandle to phandle */
 40         char * (*v2_dumb_mem_alloc)(char *va, unsigned sz);
 41         void (*v2_dumb_mem_free)(char *va, unsigned sz);
 42 
 43         /* To map devices into virtual I/O space. */
 44         char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz);
 45         void (*v2_dumb_munmap)(char *virta, unsigned size);
 46 
 47         int (*v2_dev_open)(char *devpath);
 48         void (*v2_dev_close)(int d);
 49         int (*v2_dev_read)(int d, char *buf, int nbytes);
 50         int (*v2_dev_write)(int d, char *buf, int nbytes);
 51         int (*v2_dev_seek)(int d, int hi, int lo);
 52 
 53         /* Never issued (multistage load support) */
 54         void (*v2_wheee2)(void);
 55         void (*v2_wheee3)(void);
 56 };
 57 
 58 struct linux_mlist_v0 {
 59         struct linux_mlist_v0 *theres_more;
 60         char *start_adr;
 61         unsigned num_bytes;
 62 };
 63 
 64 struct linux_mem_v0 {
 65         struct linux_mlist_v0 **v0_totphys;
 66         struct linux_mlist_v0 **v0_prommap;
 67         struct linux_mlist_v0 **v0_available; /* What we can use */
 68 };
 69 
 70 /* Arguments sent to the kernel from the boot prompt. */
 71 struct linux_arguments_v0 {
 72         char *argv[8];
 73         char args[100];
 74         char boot_dev[2];
 75         int boot_dev_ctrl;
 76         int boot_dev_unit;
 77         int dev_partition;
 78         char *kernel_file_name;
 79         void *aieee1;           /* XXX */
 80 };
 81 
 82 /* V2 and up boot things. */
 83 struct linux_bootargs_v2 {
 84         char **bootpath;
 85         char **bootargs;
 86         int *fd_stdin;
 87         int *fd_stdout;
 88 };
 89 
 90 #if defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
 91 struct linux_romvec {
 92         char            *pv_initsp;
 93         int             (*pv_startmon)(void);
 94 
 95         int             *diagberr;
 96 
 97         struct linux_arguments_v0 **pv_v0bootargs;
 98         unsigned        *pv_sun3mem;
 99 
100         unsigned char   (*pv_getchar)(void);
101         int             (*pv_putchar)(int ch);
102         int             (*pv_nbgetchar)(void);
103         int             (*pv_nbputchar)(int ch);
104         unsigned char   *pv_echo;
105         unsigned char   *pv_insource;
106         unsigned char   *pv_outsink;
107 
108         int             (*pv_getkey)(void);
109         int             (*pv_initgetkey)(void);
110         unsigned int    *pv_translation;
111         unsigned char   *pv_keybid;
112         int             *pv_screen_x;
113         int             *pv_screen_y;
114         struct keybuf   *pv_keybuf;
115 
116         char            *pv_monid;
117 
118         /*
119          * Frame buffer output and terminal emulation
120          */
121 
122         int             (*pv_fbwritechar)(char);
123         int             *pv_fbaddr;
124         char            **pv_font;
125         int             (*pv_fbwritestr)(char);
126 
127         void            (*pv_reboot)(char *bootstr);
128 
129         /*
130          * Line input and parsing
131          */
132 
133         unsigned char   *pv_linebuf;
134         unsigned char   **pv_lineptr;
135         int             *pv_linesize;
136         int             (*pv_getline)(void);
137         unsigned char   (*pv_getnextchar)(void);
138         unsigned char   (*pv_peeknextchar)(void);
139         int             *pv_fbthere;
140         int             (*pv_getnum)(void);
141 
142         void            (*pv_printf)(const char *fmt, ...);
143         int             (*pv_printhex)(void);
144 
145         unsigned char   *pv_leds;
146         int             (*pv_setleds)(void);
147 
148         /*
149          * Non-maskable interrupt  (nmi) information
150          */
151 
152         int             (*pv_nmiaddr)(void);
153         int             (*pv_abortentry)(void);
154         int             *pv_nmiclock;
155 
156         int             *pv_fbtype;
157 
158         /*
159          * Assorted other things
160          */
161 
162         unsigned        pv_romvers;
163         struct globram  *pv_globram;
164         char            *pv_kbdzscc;
165 
166         int             *pv_keyrinit;
167         unsigned char   *pv_keyrtick;
168         unsigned        *pv_memoryavail;
169         long            *pv_resetaddr;
170         long            *pv_resetmap;
171 
172         void            (*pv_halt)(void);
173         unsigned char   *pv_memorybitmap;
174 
175 #ifdef CONFIG_SUN3
176         void            (*pv_setctxt)(int ctxt, char *va, int pmeg);
177         void            (*pv_vector_cmd)(void);
178         int             dummy1z;
179         int             dummy2z;
180         int             dummy3z;
181         int             dummy4z;
182 #endif
183 };
184 #else
185 /* The top level PROM vector. */
186 struct linux_romvec {
187         /* Version numbers. */
188         unsigned int pv_magic_cookie;
189         unsigned int pv_romvers;
190         unsigned int pv_plugin_revision;
191         unsigned int pv_printrev;
192 
193         /* Version 0 memory descriptors. */
194         struct linux_mem_v0 pv_v0mem;
195 
196         /* Node operations. */
197         struct linux_nodeops *pv_nodeops;
198 
199         char **pv_bootstr;
200         struct linux_dev_v0_funcs pv_v0devops;
201 
202         char *pv_stdin;
203         char *pv_stdout;
204 #define PROMDEV_KBD     0               /* input from keyboard */
205 #define PROMDEV_SCREEN  0               /* output to screen */
206 #define PROMDEV_TTYA    1               /* in/out to ttya */
207 #define PROMDEV_TTYB    2               /* in/out to ttyb */
208 
209         /* Blocking getchar/putchar.  NOT REENTRANT! (grr) */
210         int (*pv_getchar)(void);
211         void (*pv_putchar)(int ch);
212 
213         /* Non-blocking variants. */
214         int (*pv_nbgetchar)(void);
215         int (*pv_nbputchar)(int ch);
216 
217         void (*pv_putstr)(char *str, int len);
218 
219         /* Miscellany. */
220         void (*pv_reboot)(char *bootstr);
221         void (*pv_printf)(__const__ char *fmt, ...);
222         void (*pv_abort)(void);
223         __volatile__ int *pv_ticks;
224         void (*pv_halt)(void);
225         void (**pv_synchook)(void);
226 
227         /* Evaluate a forth string, not different proto for V0 and V2->up. */
228         union {
229                 void (*v0_eval)(int len, char *str);
230                 void (*v2_eval)(char *str);
231         } pv_fortheval;
232 
233         struct linux_arguments_v0 **pv_v0bootargs;
234 
235         /* Get ether address. */
236         unsigned int (*pv_enaddr)(int d, char *enaddr);
237 
238         struct linux_bootargs_v2 pv_v2bootargs;
239         struct linux_dev_v2_funcs pv_v2devops;
240 
241         int filler[15];
242 
243         /* This one is sun4c/sun4 only. */
244         void (*pv_setctxt)(int ctxt, char *va, int pmeg);
245 
246         /* Prom version 3 Multiprocessor routines. This stuff is crazy.
247          * No joke. Calling these when there is only one cpu probably
248          * crashes the machine, have to test this. :-)
249          */
250 
251         /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
252          * 'thiscontext' executing at address 'prog_counter'
253          */
254         int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
255                            int thiscontext, char *prog_counter);
256 
257         /* v3_cpustop() will cause cpu 'whichcpu' to stop executing
258          * until a resume cpu call is made.
259          */
260         int (*v3_cpustop)(unsigned int whichcpu);
261 
262         /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
263          * resume cpu call is made.
264          */
265         int (*v3_cpuidle)(unsigned int whichcpu);
266 
267         /* v3_cpuresume() will resume processor 'whichcpu' executing
268          * starting with whatever 'pc' and 'npc' were left at the
269          * last 'idle' or 'stop' call.
270          */
271         int (*v3_cpuresume)(unsigned int whichcpu);
272 };
273 #endif
274 
275 /* Routines for traversing the prom device tree. */
276 struct linux_nodeops {
277         int (*no_nextnode)(int node);
278         int (*no_child)(int node);
279         int (*no_proplen)(int node, char *name);
280         int (*no_getprop)(int node, char *name, char *val);
281         int (*no_setprop)(int node, char *name, char *val, int len);
282         char * (*no_nextprop)(int node, char *name);
283 };
284 
285 /* More fun PROM structures for device probing. */
286 #define PROMREG_MAX     16
287 #define PROMVADDR_MAX   16
288 #define PROMINTR_MAX    15
289 
290 struct linux_prom_registers {
291         int which_io;         /* is this in OBIO space? */
292         char *phys_addr;      /* The physical address of this register */
293         int reg_size;         /* How many bytes does this register take up? */
294 };
295 
296 struct linux_prom_irqs {
297         int pri;    /* IRQ priority */
298         int vector; /* This is foobar, what does it do? */
299 };
300 
301 /* Element of the "ranges" vector */
302 struct linux_prom_ranges {
303         unsigned int ot_child_space;
304         unsigned int ot_child_base;             /* Bus feels this */
305         unsigned int ot_parent_space;
306         unsigned int ot_parent_base;            /* CPU looks from here */
307         unsigned int or_size;
308 };
309 
310 #endif /* !(__ASSEMBLY__) */
311 
312 #endif /* !(__SPARC_OPENPROM_H) */
313 

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