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1 | /*++ |
1 | /*++ |
2 | 2 | ||
3 | Copyright (c) 2000 Intel Corporation |
3 | Copyright (c) 2000 Intel Corporation |
4 | 4 | ||
5 | Module Name: |
5 | Module Name: |
6 | 6 | ||
7 | Smbios.c |
7 | Smbios.c |
8 | |
8 | |
9 | Abstract: |
9 | Abstract: |
10 | 10 | ||
11 | Lib fucntions for SMBIOS. Used to get system serial number and GUID |
11 | Lib fucntions for SMBIOS. Used to get system serial number and GUID |
12 | 12 | ||
13 | Revision History |
13 | Revision History |
14 | 14 | ||
15 | --*/ |
15 | --*/ |
16 | 16 | ||
17 | #include "lib.h" |
17 | #include "lib.h" |
18 | 18 | ||
19 | 19 | ||
20 | EFI_STATUS |
20 | EFI_STATUS |
21 | LibGetSmbiosSystemGuidAndSerialNumber ( |
21 | LibGetSmbiosSystemGuidAndSerialNumber ( |
22 | IN EFI_GUID *SystemGuid, |
22 | IN EFI_GUID *SystemGuid, |
23 | OUT CHAR8 **SystemSerialNumber |
23 | OUT CHAR8 **SystemSerialNumber |
24 | ) |
24 | ) |
25 | { |
25 | { |
26 | EFI_STATUS Status; |
26 | EFI_STATUS Status; |
27 | SMBIOS_STRUCTURE_TABLE *SmbiosTable; |
27 | SMBIOS_STRUCTURE_TABLE *SmbiosTable; |
28 | SMBIOS_STRUCTURE_POINTER Smbios; |
28 | SMBIOS_STRUCTURE_POINTER Smbios; |
29 | SMBIOS_STRUCTURE_POINTER SmbiosEnd; |
29 | SMBIOS_STRUCTURE_POINTER SmbiosEnd; |
30 | UINT16 Index; |
30 | UINT16 Index; |
31 | 31 | ||
32 | Status = LibGetSystemConfigurationTable(&SMBIOSTableGuid, (VOID**)&SmbiosTable); |
32 | Status = LibGetSystemConfigurationTable(&SMBIOSTableGuid, (VOID**)&SmbiosTable); |
33 | if (EFI_ERROR(Status)) { |
33 | if (EFI_ERROR(Status)) { |
34 | return EFI_NOT_FOUND; |
34 | return EFI_NOT_FOUND; |
35 | } |
35 | } |
36 | 36 | ||
37 | Smbios.Hdr = (SMBIOS_HEADER *)SmbiosTable->TableAddress; |
37 | Smbios.Hdr = (SMBIOS_HEADER *)SmbiosTable->TableAddress; |
38 | SmbiosEnd.Raw = (UINT8 *)(SmbiosTable->TableAddress + SmbiosTable->TableLength); |
38 | SmbiosEnd.Raw = (UINT8 *)(SmbiosTable->TableAddress + SmbiosTable->TableLength); |
39 | for (Index = 0; Index < SmbiosTable->TableLength ; Index++) { |
39 | for (Index = 0; Index < SmbiosTable->TableLength ; Index++) { |
40 | if (Smbios.Hdr->Type == 1) { |
40 | if (Smbios.Hdr->Type == 1) { |
41 | if (Smbios.Hdr->Length < 0x19) { |
41 | if (Smbios.Hdr->Length < 0x19) { |
42 | // |
42 | // |
43 | // Older version did not support Guid and Serial number |
43 | // Older version did not support Guid and Serial number |
44 | // |
44 | // |
45 | continue; |
45 | continue; |
46 | } |
46 | } |
47 | 47 | ||
48 | // |
48 | // |
49 | // SMBIOS tables are byte packed so we need to do a byte copy to |
49 | // SMBIOS tables are byte packed so we need to do a byte copy to |
50 | // prevend alignment faults on IA-64. |
50 | // prevend alignment faults on IA-64. |
51 | 51 | ||
52 | CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof(EFI_GUID)); |
52 | CopyMem (SystemGuid, &Smbios.Type1->Uuid, sizeof(EFI_GUID)); |
53 | *SystemSerialNumber = LibGetSmbiosString(&Smbios, Smbios.Type1->SerialNumber); |
53 | *SystemSerialNumber = LibGetSmbiosString(&Smbios, Smbios.Type1->SerialNumber); |
54 | return EFI_SUCCESS; |
54 | return EFI_SUCCESS; |
55 | } |
55 | } |
56 | 56 | ||
57 | // |
57 | // |
58 | // Make Smbios point to the next record |
58 | // Make Smbios point to the next record |
59 | // |
59 | // |
60 | LibGetSmbiosString (&Smbios, -1); |
60 | LibGetSmbiosString (&Smbios, -1); |
61 | 61 | ||
62 | if (Smbios.Raw >= SmbiosEnd.Raw) { |
62 | if (Smbios.Raw >= SmbiosEnd.Raw) { |
63 | // |
63 | // |
64 | // SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e. |
64 | // SMBIOS 2.1 incorrectly stated the length of SmbiosTable as 0x1e. |
65 | // given this we must double check against the lenght of |
65 | // given this we must double check against the lenght of |
66 | /// the structure. My home PC has this bug.ruthard |
66 | /// the structure. My home PC has this bug.ruthard |
67 | // |
67 | // |
68 | return EFI_SUCCESS; |
68 | return EFI_SUCCESS; |
69 | } |
69 | } |
70 | } |
70 | } |
71 | 71 | ||
72 | return EFI_SUCCESS; |
72 | return EFI_SUCCESS; |
73 | } |
73 | } |
74 | 74 | ||
75 | CHAR8* |
75 | CHAR8* |
76 | LibGetSmbiosString ( |
76 | LibGetSmbiosString ( |
77 | IN SMBIOS_STRUCTURE_POINTER *Smbios, |
77 | IN SMBIOS_STRUCTURE_POINTER *Smbios, |
78 | IN UINT16 StringNumber |
78 | IN UINT16 StringNumber |
79 | ) |
79 | ) |
80 | /*++ |
80 | /*++ |
81 | 81 | ||
82 | Return SMBIOS string given the string number. |
82 | Return SMBIOS string given the string number. |
83 | 83 | ||
84 | Arguments: |
84 | Arguments: |
85 | Smbios - Pointer to SMBIOS structure |
85 | Smbios - Pointer to SMBIOS structure |
86 | StringNumber - String number to return. -1 is used to skip all strings and |
86 | StringNumber - String number to return. -1 is used to skip all strings and |
87 | point to the next SMBIOS structure. |
87 | point to the next SMBIOS structure. |
88 | 88 | ||
89 | Returns: |
89 | Returns: |
90 | Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == -1 |
90 | Pointer to string, or pointer to next SMBIOS strcuture if StringNumber == -1 |
91 | --*/ |
91 | --*/ |
92 | { |
92 | { |
93 | UINT16 Index; |
93 | UINT16 Index; |
94 | CHAR8 *String; |
94 | CHAR8 *String; |
95 | 95 | ||
96 | // |
96 | // |
97 | // Skip over formatted section |
97 | // Skip over formatted section |
98 | // |
98 | // |
99 | String = (CHAR8 *)(Smbios->Raw + Smbios->Hdr->Length); |
99 | String = (CHAR8 *)(Smbios->Raw + Smbios->Hdr->Length); |
100 | 100 | ||
101 | // |
101 | // |
102 | // Look through unformated section |
102 | // Look through unformated section |
103 | // |
103 | // |
104 | for (Index = 1; Index <= StringNumber; Index++) { |
104 | for (Index = 1; Index <= StringNumber; Index++) { |
105 | if (StringNumber == Index) { |
105 | if (StringNumber == Index) { |
106 | return String; |
106 | return String; |
107 | } |
107 | } |
108 | 108 | ||
109 | // |
109 | // |
110 | // Skip string |
110 | // Skip string |
111 | // |
111 | // |
112 | for (; *String != 0; String++); |
112 | for (; *String != 0; String++); |
113 | String++; |
113 | String++; |
114 | 114 | ||
115 | if (*String == 0) { |
115 | if (*String == 0) { |
116 | // |
116 | // |
117 | // If double NULL then we are done. |
117 | // If double NULL then we are done. |
118 | // Retrun pointer to next structure in Smbios. |
118 | // Retrun pointer to next structure in Smbios. |
119 | // if you pass in a -1 you will always get here |
119 | // if you pass in a -1 you will always get here |
120 | // |
120 | // |
121 | Smbios->Raw = (UINT8 *)++String; |
121 | Smbios->Raw = (UINT8 *)++String; |
122 | return NULL; |
122 | return NULL; |
123 | } |
123 | } |
124 | } |
124 | } |
125 | return NULL; |
125 | return NULL; |
126 | } |
126 | } |
127 | 127 |