2 * Copyright (c) 2005 Peter Grehan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #ifndef _MACHINE_PLATFORMVAR_H_
28 #define _MACHINE_PLATFORMVAR_H_
31 * An ARM platform implementation is declared with a kernel object and
32 * an associated method table, similar to a device driver.
36 * static platform_method_t bcm2835_methods[] = {
37 * PLATFORMMETHOD(platform_probe, bcm2835_probe),
42 * static platform_def_t bcm3835_platform = {
45 * sizeof(bcm2835_platform_softc), // or 0 if no softc
48 * PLATFORM_DEF(bcm2835_platform);
52 #include <sys/linker_set.h>
54 struct platform_class {
57 /* How many times to loop to delay approximately 1us */
61 struct platform_kobj {
63 * A platform instance is a kernel object
67 /* Platform class, for access to class specific data */
68 struct platform_class *cls;
71 typedef struct platform_kobj *platform_t;
72 typedef struct platform_class platform_def_t;
73 #define platform_method_t kobj_method_t
75 #define PLATFORMMETHOD KOBJMETHOD
76 #define PLATFORMMETHOD_END KOBJMETHOD_END
78 #define PLATFORM_DEF(name) DATA_SET(platform_set, name)
81 struct fdt_platform_class {
84 const char *fdt_compatible;
87 typedef struct fdt_platform_class fdt_platform_def_t;
89 extern platform_method_t fdt_platform_methods[];
91 #define FDT_PLATFORM_DEF2(NAME, VAR_NAME, NAME_STR, _size, _compatible, \
93 CTASSERT(_delay > 0); \
94 static fdt_platform_def_t VAR_NAME ## _fdt_platform = { \
96 .methods = fdt_platform_methods, \
97 .fdt_compatible = _compatible, \
99 static kobj_class_t VAR_NAME ## _baseclasses[] = \
100 { (kobj_class_t)&VAR_NAME ## _fdt_platform, NULL }; \
101 static platform_def_t VAR_NAME ## _platform = { \
103 .methods = NAME ## _methods, \
105 .baseclasses = VAR_NAME ## _baseclasses, \
106 .delay_count = _delay, \
108 DATA_SET(platform_set, VAR_NAME ## _platform)
110 #define FDT_PLATFORM_DEF(NAME, NAME_STR, size, compatible, delay) \
111 FDT_PLATFORM_DEF2(NAME, NAME, NAME_STR, size, compatible, delay)
116 * Helper to get the platform object
118 platform_t platform_obj(void);
120 bool arm_tmr_timed_wait(platform_t, int);
122 #endif /* _MACHINE_PLATFORMVAR_H_ */