RTEMS  5.0.0
frame.h
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1 /*
2  * Copyright (c) 2005 Jakub Jermar
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * - Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * - Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * - The name of the author may not be used to endorse or promote products
15  * derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
35 #ifndef KERN_sparc64_SUN4U_FRAME_H_
36 #define KERN_sparc64_SUN4U_FRAME_H_
37 
38 /*
39  * Page size supported by the MMU.
40  * For 8K there is the nasty illegal virtual aliasing problem.
41  * Therefore, the kernel uses 8K only internally on the TLB and TSB levels.
42  */
43 #define MMU_FRAME_WIDTH 13 /* 8K */
44 #define MMU_FRAME_SIZE (1 << MMU_FRAME_WIDTH)
45 
46 /*
47  * Page size exported to the generic memory management subsystems.
48  * This page size is not directly supported by the MMU, but we can emulate
49  * each 16K page with a pair of adjacent 8K pages.
50  */
51 #define FRAME_WIDTH 14 /* 16K */
52 #define FRAME_SIZE (1 << FRAME_WIDTH)
53 
54 #ifdef KERNEL
55 #ifndef __ASM__
56 
57 #include <arch/types.h>
58 
59 union frame_address {
60  uintptr_t address;
61  struct {
62 #if defined (US)
63  unsigned : 23;
64  uint64_t pfn : 28;
65 #elif defined (US3)
66  unsigned : 21;
67  uint64_t pfn : 30;
68 #endif
69  unsigned offset : 13;
70  } __attribute__ ((packed));
71 };
72 
73 typedef union frame_address frame_address_t;
74 
75 extern uintptr_t last_frame;
76 extern uintptr_t end_of_identity;
77 
78 extern void frame_arch_init(void);
79 #define physmem_print()
80 
81 #endif
82 #endif
83 
84 #endif
85 
typedef __attribute__
Disable IRQ Interrupts.
Definition: cmsis_gcc.h:69