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kernel/linux-imx6_3.14.28/drivers/fmc/fru-parse.c 1.83 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * Copyright (C) 2012 CERN (www.cern.ch)
   * Author: Alessandro Rubini <rubini@gnudd.com>
   *
   * Released according to the GNU GPL, version 2 or any later version.
   *
   * This work is part of the White Rabbit project, a research effort led
   * by CERN, the European Institute for Nuclear Research.
   */
  #include <linux/ipmi-fru.h>
  
  /* Some internal helpers */
  static struct fru_type_length *
  __fru_get_board_tl(struct fru_common_header *header, int nr)
  {
  	struct fru_board_info_area *bia;
  	struct fru_type_length *tl;
  
  	bia = fru_get_board_area(header);
  	tl = bia->tl;
  	while (nr > 0 && !fru_is_eof(tl)) {
  		tl = fru_next_tl(tl);
  		nr--;
  	}
  	if (fru_is_eof(tl))
  		return NULL;
  	return tl;
  }
  
  static char *__fru_alloc_get_tl(struct fru_common_header *header, int nr)
  {
  	struct fru_type_length *tl;
  	char *res;
  	int len;
  
  	tl = __fru_get_board_tl(header, nr);
  	if (!tl)
  		return NULL;
  	len = fru_strlen(tl);
  	res = fru_alloc(fru_strlen(tl) + 1);
  	if (!res)
  		return NULL;
  	return fru_strcpy(res, tl);
  }
  
  /* Public checksum verifiers */
  int fru_header_cksum_ok(struct fru_common_header *header)
  {
  	uint8_t *ptr = (void *)header;
  	int i, sum;
  
  	for (i = sum = 0; i < sizeof(*header); i++)
  		sum += ptr[i];
  	return (sum & 0xff) == 0;
  }
  int fru_bia_cksum_ok(struct fru_board_info_area *bia)
  {
  	uint8_t *ptr = (void *)bia;
  	int i, sum;
  
  	for (i = sum = 0; i < 8 * bia->area_len; i++)
  		sum += ptr[i];
  	return (sum & 0xff) == 0;
  }
  
  /* Get various stuff, trivial */
  char *fru_get_board_manufacturer(struct fru_common_header *header)
  {
  	return __fru_alloc_get_tl(header, 0);
  }
  char *fru_get_product_name(struct fru_common_header *header)
  {
  	return __fru_alloc_get_tl(header, 1);
  }
  char *fru_get_serial_number(struct fru_common_header *header)
  {
  	return __fru_alloc_get_tl(header, 2);
  }
  char *fru_get_part_number(struct fru_common_header *header)
  {
  	return __fru_alloc_get_tl(header, 3);
  }