1 /*
2 * Copyright (C) 2012 CERN (www.cern.ch)
3 * Author: Alessandro Rubini <rubini@gnudd.com>
4 *
5 * Released according to the GNU GPL, version 2 or any later version.
6 *
7 * This work is part of the White Rabbit project, a research effort led
8 * by CERN, the European Institute for Nuclear Research.
9 */
10 #include <linux/ipmi-fru.h>
11
12 /* Some internal helpers */
13 static struct fru_type_length *
__fru_get_board_tl(struct fru_common_header * header,int nr)14 __fru_get_board_tl(struct fru_common_header *header, int nr)
15 {
16 struct fru_board_info_area *bia;
17 struct fru_type_length *tl;
18
19 bia = fru_get_board_area(header);
20 tl = bia->tl;
21 while (nr > 0 && !fru_is_eof(tl)) {
22 tl = fru_next_tl(tl);
23 nr--;
24 }
25 if (fru_is_eof(tl))
26 return NULL;
27 return tl;
28 }
29
__fru_alloc_get_tl(struct fru_common_header * header,int nr)30 static char *__fru_alloc_get_tl(struct fru_common_header *header, int nr)
31 {
32 struct fru_type_length *tl;
33 char *res;
34 int len;
35
36 tl = __fru_get_board_tl(header, nr);
37 if (!tl)
38 return NULL;
39 len = fru_strlen(tl);
40 res = fru_alloc(fru_strlen(tl) + 1);
41 if (!res)
42 return NULL;
43 return fru_strcpy(res, tl);
44 }
45
46 /* Public checksum verifiers */
fru_header_cksum_ok(struct fru_common_header * header)47 int fru_header_cksum_ok(struct fru_common_header *header)
48 {
49 uint8_t *ptr = (void *)header;
50 int i, sum;
51
52 for (i = sum = 0; i < sizeof(*header); i++)
53 sum += ptr[i];
54 return (sum & 0xff) == 0;
55 }
fru_bia_cksum_ok(struct fru_board_info_area * bia)56 int fru_bia_cksum_ok(struct fru_board_info_area *bia)
57 {
58 uint8_t *ptr = (void *)bia;
59 int i, sum;
60
61 for (i = sum = 0; i < 8 * bia->area_len; i++)
62 sum += ptr[i];
63 return (sum & 0xff) == 0;
64 }
65
66 /* Get various stuff, trivial */
fru_get_board_manufacturer(struct fru_common_header * header)67 char *fru_get_board_manufacturer(struct fru_common_header *header)
68 {
69 return __fru_alloc_get_tl(header, 0);
70 }
fru_get_product_name(struct fru_common_header * header)71 char *fru_get_product_name(struct fru_common_header *header)
72 {
73 return __fru_alloc_get_tl(header, 1);
74 }
fru_get_serial_number(struct fru_common_header * header)75 char *fru_get_serial_number(struct fru_common_header *header)
76 {
77 return __fru_alloc_get_tl(header, 2);
78 }
fru_get_part_number(struct fru_common_header * header)79 char *fru_get_part_number(struct fru_common_header *header)
80 {
81 return __fru_alloc_get_tl(header, 3);
82 }
83