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

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 312 lines | 199 code | 59 blank | 54 comment | 1 complexity | ae9cd1ee33c33586d8a0d8de6aefcc8b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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. */
 25struct 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. */
 38struct 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
 58struct linux_mlist_v0 {
 59	struct linux_mlist_v0 *theres_more;
 60	char *start_adr;
 61	unsigned num_bytes;
 62};
 63
 64struct 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. */
 71struct 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. */
 83struct 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)
 91struct 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. */
186struct 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. */
276struct 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
290struct 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
296struct 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 */
302struct 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) */