summaryrefslogtreecommitdiffstats
path: root/include/asm-sparc/openprom_32.h
blob: 8b1649f29ed954439d996a8bbd337a9d2aa1c482 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
#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... */
#define	LINUX_OPPROM_MAGIC      0x10010407

#ifndef __ASSEMBLY__
/* V0 prom device operations. */
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. */
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);
};

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

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. */
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. */
struct linux_bootargs_v2 {
	char **bootpath;
	char **bootargs;
	int *fd_stdin;
	int *fd_stdout;
};

/* The top level PROM vector. */
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);
};

/* Routines for traversing the prom device tree. */
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

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

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

/* Element of the "ranges" vector */
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;
};

/* Ranges and reg properties are a bit different for PCI. */
struct linux_prom_pci_registers {
	/*
	 * We don't know what information this field contain.
	 * We guess, PCI device function is in bits 15:8
	 * So, ...
	 */
	unsigned int which_io;  /* Let it be which_io */

	unsigned int phys_hi;
	unsigned int phys_lo;

	unsigned int size_hi;
	unsigned int size_lo;
};

struct linux_prom_pci_ranges {
	unsigned int child_phys_hi;	/* Only certain bits are encoded here. */
	unsigned int child_phys_mid;
	unsigned int child_phys_lo;

	unsigned int parent_phys_hi;
	unsigned int parent_phys_lo;

	unsigned int size_hi;
	unsigned int size_lo;
};

struct linux_prom_pci_assigned_addresses {
	unsigned int which_io;

	unsigned int phys_hi;
	unsigned int phys_lo;

	unsigned int size_hi;
	unsigned int size_lo;
};

struct linux_prom_ebus_ranges {
	unsigned int child_phys_hi;
	unsigned int child_phys_lo;

	unsigned int parent_phys_hi;
	unsigned int parent_phys_mid;
	unsigned int parent_phys_lo;

	unsigned int size;
};

#endif /* !(__ASSEMBLY__) */

#endif /* !(__SPARC_OPENPROM_H) */
OpenPOWER on IntegriCloud