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
|
/* Copyright (c) 2005 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Neither the name of the Advanced Micro Devices, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
* */
/*
* File Contents: This file contains platform dependent functions
* which provide interface to that platform.
*
* SubModule: Geode FlatPanel library
* */
#define LINUX_ROM_SEGMENT 0x000F
#define SEGMENT_LENGTH 0xFFFF
#define PAGE_LENGTH 0x1000
#define SYS_BOARD_NAME_LEN 24
#define PLT_UNKNOWN 0xFFFF
typedef struct {
char sys_board_name[SYS_BOARD_NAME_LEN];
SYS_BOARD sys_board;
} SYS_BOARD_INFO;
static SYS_BOARD_INFO Sys_info;
/*
* The names in the sys_board_name string must exactly match the names in the
* BIOS header. These names are used by FindStringInSeg() to find the names
* in the BIOS header space. The BIOS does not use OTHER; it is a dummy value
* for program useonly.
*/
SYS_BOARD_INFO Sys_board_info_array[] = {
{"Marmot", MARMOT_PLATFORM},
{"Unicorn", UNICORN_PLATFORM},
{"Centaurus", CENTAURUS_PLATFORM},
{"Aries", ARIES_PLATFORM},
{"Carmel", CARMEL_PLATFORM},
{"Hyrda", HYDRA_PLATFORM},
{"Dorado", DORADO_PLATFORM},
{"Redcloud", REDCLOUD_PLATFORM},
{"Other", OTHER_PLATFORM}
};
#define NUM_SYS_BOARD_TYPES \
sizeof(Sys_board_info_array)/sizeof(SYS_BOARD_INFO)
static int Num_sys_board_type = NUM_SYS_BOARD_TYPES;
SYS_BOARD_INFO *Sys_board_array_base = Sys_board_info_array;
int FindStringInSeg(unsigned int, char *);
static unsigned char get_sys_board_type(SYS_BOARD_INFO *, SYS_BOARD_INFO *);
/* Detect the Platform */
int
Detect_Platform(void)
{
/* See if we can find the board name using Xpressrom */
get_sys_board_type(&Sys_info, Sys_board_array_base);
return (Sys_info.sys_board);
}
static int
Strncmp(char *str1, char *str2, int len)
{
int i;
if ((str1 == 0x0) || (str2 == 0x0) || (len == 0))
return (1);
for (i = 0; i < len; i++) {
if (*(str1 + i) > *(str2 + i)) {
return 1;
}
else if (*(str1 + i) < *(str2 + i)) {
return -1;
}
}
return 0;
}
static char *
Strcpy(char *dst, char *src)
{
int i;
if ((dst == 0x0) || (src == 0x0))
return (0);
for (i = 0; src[i] != 0x0; i++) {
dst[i] = src[i];
}
dst[i] = 0x0; /* NULL termination */
return dst;
}
static int
Strlen(char *str)
{
int i;
if (str == 0x0)
return 0;
for (i = 0; str[i] != 0x0; i++);
return i;
}
/* Platform Detection Code */
/************************************************************************
* int FindStringInSeg( unsigned int segment_address, char *string_ptr )
*
* Returns the offset where the NULL terminated string pointed to by
* string_ptr is located in the segment passed in segment_address.
* Segment_address must be of the form 0xXXXX (i.e 0xf000 for segment f).
* Returns NULL if the string is not found.
************************************************************************
*/
int
FindStringInSeg(unsigned int segment_address, char *string_ptr)
{
int string_length = Strlen(string_ptr);
char *psegment_buf;
unsigned long mem_ptr = (unsigned long) segment_address << 16;
unsigned int i;
/* silence compiler */
(void) mem_ptr;
psegment_buf = (char *) XpressROMPtr;
/* Now search for the first character of the string_ptr */
for (i = 0; i < SEGMENT_LENGTH + 1; i++) {
if (*(psegment_buf + i) == *string_ptr) {
/* If we match the first character, do a
* string compare.
*/
if (!Strncmp(string_ptr, (psegment_buf + i), string_length)) {
/* They match! */
return (1);
}
}
}
/* if we got this far we didn't find anything. Return NULL. */
return (0);
} /* end FindStringInSeg() */
/**********************************************************************
* TRUE_FALSE get_sys_board_type( SYS_BOARD_INFO *sys_info,
* SYS_BOARD_INFO *sys_board_array_base)
*
* Checks the system BIOS area for Xpressrom information. If found, searches
* the BIOS area for one of names in the array pointed to by
* sys_board_array_ptr.
* If a match is found, sets the SYS_INFO system_board_name string
* and the system_board variable to the board name and returns TRUE.
* If Xpressrom or a board is not found, sets the variables to
* their default values and returns FALSE.
* Uses the global string pointer *xpress_rom_string_ptr.
***********************************************************************
*/
static unsigned char
get_sys_board_type(SYS_BOARD_INFO * sys_info,
SYS_BOARD_INFO * sys_board_array_base)
{
int index;
char *xpress_rom_string_ptr = "XpressStart";
unsigned int segment = LINUX_ROM_SEGMENT;
/* See if XpressStart is present in the BIOS area.
* If it is, search for a board string. If not, Xpressrom is
* not present, set system_board information to UNKNOWN and
* return FALSE.
*/
if (!FindStringInSeg(segment, xpress_rom_string_ptr)) {
sys_info->sys_board = PLT_UNKNOWN;
Strcpy(sys_info->sys_board_name, "Unknown");
return (FALSE);
}
else {
/* we have Xpressrom, so look for a board */
for (index = 0; index < Num_sys_board_type; index++) {
if (!FindStringInSeg(segment, (sys_board_array_base +
index)->sys_board_name)) {
continue;
}
else {
/* a match!! */
sys_info->sys_board = (sys_board_array_base + index)->sys_board;
Strcpy(sys_info->sys_board_name,
(sys_board_array_base + index)->sys_board_name);
return (TRUE);
}
} /* end for() */
} /* end else */
/* if we are here we have failed */
sys_info->sys_board = PLT_UNKNOWN;
Strcpy(sys_info->sys_board_name, "Unknown");
return (FALSE);
} /* end get_sys_board_type() */
|
