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 */
13static struct fru_type_length *
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
30static 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 */
47int 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}
56int 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 */
67char *fru_get_board_manufacturer(struct fru_common_header *header)
68{
69	return __fru_alloc_get_tl(header, 0);
70}
71char *fru_get_product_name(struct fru_common_header *header)
72{
73	return __fru_alloc_get_tl(header, 1);
74}
75char *fru_get_serial_number(struct fru_common_header *header)
76{
77	return __fru_alloc_get_tl(header, 2);
78}
79char *fru_get_part_number(struct fru_common_header *header)
80{
81	return __fru_alloc_get_tl(header, 3);
82}
83