Last change
on this file since 653 was
653,
checked in by cfuguet, 11 years ago
|
Introducing a RAMDISK driver in the preloader.
When using RAMDISK, execute the make command with the flags
SOCLIB=1 and RAMDISK=1. The RDK_PADDR_BASE variable must
also be set on the conf/<platform>/defs_platform.h
These modifications are backward compatibles. Therefore,
when no using RAMDISK, none modifications applied on the
platform configuration file.
|
File size:
1.3 KB
|
Line | |
---|
1 | /** |
---|
2 | * \file io.h |
---|
3 | * \date 5 September 2012 |
---|
4 | * \author Cesar Fuguet |
---|
5 | * |
---|
6 | * Utility functions to write or read memory mapped hardware registers |
---|
7 | */ |
---|
8 | #ifndef IO_H |
---|
9 | #define IO_H |
---|
10 | |
---|
11 | /** |
---|
12 | * Read an 32 bits memory mapped hardware register |
---|
13 | */ |
---|
14 | static inline unsigned int ioread32(void * addr) |
---|
15 | { |
---|
16 | return *(volatile unsigned int *) addr; |
---|
17 | } |
---|
18 | |
---|
19 | /** |
---|
20 | * Read an 16 bits memory mapped hardware register |
---|
21 | */ |
---|
22 | static inline unsigned short ioread16(void * addr) |
---|
23 | { |
---|
24 | return *(volatile unsigned short *) addr; |
---|
25 | } |
---|
26 | |
---|
27 | /** |
---|
28 | * Read an 8 bits memory mapped hardware register |
---|
29 | */ |
---|
30 | static inline unsigned char ioread8(void * addr) |
---|
31 | { |
---|
32 | return *(volatile unsigned char *) addr; |
---|
33 | } |
---|
34 | |
---|
35 | /** |
---|
36 | * Write an 32 bits memory mapped hardware register |
---|
37 | */ |
---|
38 | static inline void iowrite32(void * addr, unsigned int value) |
---|
39 | { |
---|
40 | *(volatile unsigned int *) addr = value; |
---|
41 | asm volatile("sync" ::: "memory"); |
---|
42 | } |
---|
43 | |
---|
44 | /** |
---|
45 | * Write an 16 bits memory mapped hardware register |
---|
46 | */ |
---|
47 | static inline void iowrite16(void * addr, unsigned short value) |
---|
48 | { |
---|
49 | *(volatile unsigned short *) addr = value; |
---|
50 | asm volatile("sync" ::: "memory"); |
---|
51 | } |
---|
52 | |
---|
53 | /** |
---|
54 | * Write an 8 bits memory mapped hardware register |
---|
55 | */ |
---|
56 | static inline void iowrite8(void * addr, unsigned char value) |
---|
57 | { |
---|
58 | *(volatile unsigned char *) addr = value; |
---|
59 | asm volatile("sync" ::: "memory"); |
---|
60 | } |
---|
61 | |
---|
62 | #undef in_reset |
---|
63 | |
---|
64 | #endif |
---|
Note: See
TracBrowser
for help on using the repository browser.