summaryrefslogtreecommitdiffstats
path: root/arch/sparc/include/asm/oplib_64.h
blob: a12dbe3b7762daf86e969401ad760a4b5305df60 (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
/* oplib.h:  Describes the interface and available routines in the
 *           Linux Prom library.
 *
 * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
 * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 */

#ifndef __SPARC64_OPLIB_H
#define __SPARC64_OPLIB_H

#include <asm/openprom.h>

/* OBP version string. */
extern char prom_version[];

/* Root node of the prom device tree, this stays constant after
 * initialization is complete.
 */
extern phandle prom_root_node;

/* PROM stdout */
extern int prom_stdout;

/* /chosen node of the prom device tree, this stays constant after
 * initialization is complete.
 */
extern phandle prom_chosen_node;

/* Helper values and strings in arch/sparc64/kernel/head.S */
extern const char prom_peer_name[];
extern const char prom_compatible_name[];
extern const char prom_root_compatible[];
extern const char prom_cpu_compatible[];
extern const char prom_finddev_name[];
extern const char prom_chosen_path[];
extern const char prom_cpu_path[];
extern const char prom_getprop_name[];
extern const char prom_mmu_name[];
extern const char prom_callmethod_name[];
extern const char prom_translate_name[];
extern const char prom_map_name[];
extern const char prom_unmap_name[];
extern int prom_mmu_ihandle_cache;
extern unsigned int prom_boot_mapped_pc;
extern unsigned int prom_boot_mapping_mode;
extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low;

struct linux_mlist_p1275 {
	struct linux_mlist_p1275 *theres_more;
	unsigned long start_adr;
	unsigned long num_bytes;
};

struct linux_mem_p1275 {
	struct linux_mlist_p1275 **p1275_totphys;
	struct linux_mlist_p1275 **p1275_prommap;
	struct linux_mlist_p1275 **p1275_available; /* What we can use */
};

/* The functions... */

/* You must call prom_init() before using any of the library services,
 * preferably as early as possible.  Pass it the romvec pointer.
 */
extern void prom_init(void *cif_handler, void *cif_stack);

/* Boot argument acquisition, returns the boot command line string. */
extern char *prom_getbootargs(void);

/* Miscellaneous routines, don't really fit in any category per se. */

/* Reboot the machine with the command line passed. */
extern void prom_reboot(const char *boot_command);

/* Evaluate the forth string passed. */
extern void prom_feval(const char *forth_string);

/* Enter the prom, with possibility of continuation with the 'go'
 * command in newer proms.
 */
extern void prom_cmdline(void);

/* Enter the prom, with no chance of continuation for the stand-alone
 * which calls this.
 */
extern void prom_halt(void) __attribute__ ((noreturn));

/* Halt and power-off the machine. */
extern void prom_halt_power_off(void) __attribute__ ((noreturn));

/* Acquire the IDPROM of the root node in the prom device tree.  This
 * gets passed a buffer where you would like it stuffed.  The return value
 * is the format type of this idprom or 0xff on error.
 */
extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);

/* Write a buffer of characters to the console. */
extern void prom_console_write_buf(const char *buf, int len);

/* Prom's internal routines, don't use in kernel/boot code. */
extern __printf(1, 2) void prom_printf(const char *fmt, ...);
extern void prom_write(const char *buf, unsigned int len);

/* Multiprocessor operations... */
#ifdef CONFIG_SMP
/* Start the CPU with the given device tree node at the passed program
 * counter with the given arg passed in via register %o0.
 */
extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);

/* Start the CPU with the given cpu ID at the passed program
 * counter with the given arg passed in via register %o0.
 */
extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);

/* Stop the CPU with the given cpu ID.  */
extern void prom_stopcpu_cpuid(int cpuid);

/* Stop the current CPU. */
extern void prom_stopself(void);

/* Idle the current CPU. */
extern void prom_idleself(void);

/* Resume the CPU with the passed device tree node. */
extern void prom_resumecpu(int cpunode);
#endif

/* Power management interfaces. */

/* Put the current CPU to sleep. */
extern void prom_sleepself(void);

/* Put the entire system to sleep. */
extern int prom_sleepsystem(void);

/* Initiate a wakeup event. */
extern int prom_wakeupsystem(void);

/* MMU and memory related OBP interfaces. */

/* Get unique string identifying SIMM at given physical address. */
extern int prom_getunumber(int syndrome_code,
			   unsigned long phys_addr,
			   char *buf, int buflen);

/* Retain physical memory to the caller across soft resets. */
extern int prom_retain(const char *name, unsigned long size,
		       unsigned long align, unsigned long *paddr);

/* Load explicit I/D TLB entries into the calling processor. */
extern long prom_itlb_load(unsigned long index,
			   unsigned long tte_data,
			   unsigned long vaddr);

extern long prom_dtlb_load(unsigned long index,
			   unsigned long tte_data,
			   unsigned long vaddr);

/* Map/Unmap client program address ranges.  First the format of
 * the mapping mode argument.
 */
#define PROM_MAP_WRITE	0x0001 /* Writable */
#define PROM_MAP_READ	0x0002 /* Readable - sw */
#define PROM_MAP_EXEC	0x0004 /* Executable - sw */
#define PROM_MAP_LOCKED	0x0010 /* Locked, use i/dtlb load calls for this instead */
#define PROM_MAP_CACHED	0x0020 /* Cacheable in both L1 and L2 caches */
#define PROM_MAP_SE	0x0040 /* Side-Effects */
#define PROM_MAP_GLOB	0x0080 /* Global */
#define PROM_MAP_IE	0x0100 /* Invert-Endianness */
#define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)

extern int prom_map(int mode, unsigned long size,
		    unsigned long vaddr, unsigned long paddr);
extern void prom_unmap(unsigned long size, unsigned long vaddr);


/* PROM device tree traversal functions... */

/* Get the child node of the given node, or zero if no child exists. */
extern phandle prom_getchild(phandle parent_node);

/* Get the next sibling node of the given node, or zero if no further
 * siblings exist.
 */
extern phandle prom_getsibling(phandle node);

/* Get the length, at the passed node, of the given property type.
 * Returns -1 on error (ie. no such property at this node).
 */
extern int prom_getproplen(phandle thisnode, const char *property);

/* Fetch the requested property using the given buffer.  Returns
 * the number of bytes the prom put into your buffer or -1 on error.
 */
extern int prom_getproperty(phandle thisnode, const char *property,
			    char *prop_buffer, int propbuf_size);

/* Acquire an integer property. */
extern int prom_getint(phandle node, const char *property);

/* Acquire an integer property, with a default value. */
extern int prom_getintdefault(phandle node, const char *property, int defval);

/* Acquire a boolean property, 0=FALSE 1=TRUE. */
extern int prom_getbool(phandle node, const char *prop);

/* Acquire a string property, null string on error. */
extern void prom_getstring(phandle node, const char *prop, char *buf,
			   int bufsize);

/* Does the passed node have the given "name"? YES=1 NO=0 */
extern int prom_nodematch(phandle thisnode, const char *name);

/* Search all siblings starting at the passed node for "name" matching
 * the given string.  Returns the node on success, zero on failure.
 */
extern phandle prom_searchsiblings(phandle node_start, const char *name);

/* Return the first property type, as a string, for the given node.
 * Returns a null string on error. Buffer should be at least 32B long.
 */
extern char *prom_firstprop(phandle node, char *buffer);

/* Returns the next property after the passed property for the given
 * node.  Returns null string on failure. Buffer should be at least 32B long.
 */
extern char *prom_nextprop(phandle node, const char *prev_property, char *buf);

/* Returns 1 if the specified node has given property. */
extern int prom_node_has_property(phandle node, const char *property);

/* Returns phandle of the path specified */
extern phandle prom_finddevice(const char *name);

/* Set the indicated property at the given node with the passed value.
 * Returns the number of bytes of your value that the prom took.
 */
extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
			int value_size);

extern phandle prom_inst2pkg(int);
extern void prom_sun4v_guest_soft_state(void);

extern int prom_ihandle2path(int handle, char *buffer, int bufsize);

/* Client interface level routines. */
extern void p1275_cmd_direct(unsigned long *);

#endif /* !(__SPARC64_OPLIB_H) */