1 files changed, 183 insertions, 0 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/ipmid/files/platform/wedge/fruid.c b/meta-facebook/meta-wedge/recipes-wedge/ipmid/files/platform/wedge/fruid.c
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+++ b/meta-facebook/meta-wedge/recipes-wedge/ipmid/files/platform/wedge/fruid.c
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+/*
+ *
+ * Copyright 2015-present Facebook. All Rights Reserved.
+ *
+ * This file provides platform specific implementation of FRUID information
+ *
+ * FRUID specification can be found at
+ * www.intel.com/content/dam/www/public/us/en/documents/product-briefs/platform-management-fru-document-rev-1-2-feb-2013.pdf
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "../fruid.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <string.h>
+#include <facebook/wedge_eeprom.h>
+
+#define WEDGE_FRUID_SIZE 0x100
+
+#define COMMON_HDR_VER  1
+#define PROD_INFO_VER  1
+
+#define PROD_INFO_AREA_OFFSET 0x10
+#define PROD_INFO_CKSUM_OFFSET (PROD_INFO_AREA_OFFSET + 1)
+#define LANG_CODE_ENGLISH 25
+#define TYPE_STR 0xC0
+#define TYPE_LAST 0xC1
+#define ZERO_CKSUM_CONST 0x100
+#define LEN_BYTE_SIZE 8
+
+typedef struct _fruid_common_hdr_t {
+  unsigned char ver;
+  unsigned char internal_use_area_offset;
+  unsigned char chassis_info_area_offset;
+  unsigned char board_info_area_offset;
+  unsigned char prod_info_area_offset;
+  unsigned char multi_record_area_offset;
+  unsigned char padding;
+  unsigned char cksum;
+} fruid_common_hdr_t;
+
+// Global structures
+static unsigned char g_fruid[WEDGE_FRUID_SIZE] = {0};
+
+static void
+populate_fruid(void) {
+
+  memset(&g_fruid, sizeof(g_fruid), 0);
+
+  fruid_common_hdr_t *chdr = g_fruid;
+
+  // Set Common Header version
+  chdr->ver = COMMON_HDR_VER;
+
+  // Product Info Area offset in multiples of 8 bytes
+  chdr->prod_info_area_offset = PROD_INFO_AREA_OFFSET/LEN_BYTE_SIZE;
+
+  // Calculate zero checksum
+  chdr->cksum = chdr->ver + chdr->prod_info_area_offset;
+  chdr->cksum = ZERO_CKSUM_CONST - chdr->cksum;
+
+  // Retrieve Wedge EEPROM content
+  struct wedge_eeprom_st eeprom;
+  int rc = 0;
+  rc = wedge_eeprom_parse(NULL, &eeprom);
+  if (rc)
+  {
+    syslog(LOG_ALERT, "populate_fruid: wedge_eeprom_parse returns %d\n", rc);
+    return;
+  }
+
+  // Start index at beginning of product info area
+  int i = PROD_INFO_AREA_OFFSET;
+  g_fruid[i++] = PROD_INFO_VER;
+  g_fruid[i++] = 0x00; // prod area length; filled at end
+  g_fruid[i++] = LANG_CODE_ENGLISH;
+
+#define _APPEND_STR_VALUE(name) do { \
+      if (sizeof(name) < 1 || i + 1 + sizeof(name) >= sizeof(g_fruid)) { \
+                break; \
+            } \
+      g_fruid[i++] = TYPE_STR + sizeof(name); \
+      memcpy(&g_fruid[i], name, sizeof(name)); \
+      i += sizeof(name); \
+} while(0)
+
+  // Fill system manufacturer field
+
+  _APPEND_STR_VALUE(eeprom.fbw_system_manufacturer);
+
+  // Fill product name field
+  _APPEND_STR_VALUE(eeprom.fbw_product_name);
+
+  // Fill product number field
+  _APPEND_STR_VALUE(eeprom.fbw_product_number);
+
+  // convert product version to string and fill
+  char vbuf[5] = {0};
+  snprintf(vbuf, sizeof(vbuf), "%0X", eeprom.fbw_product_version);
+  _APPEND_STR_VALUE(vbuf);
+
+  // Fill product serial number field
+  _APPEND_STR_VALUE(eeprom.fbw_product_serial);
+
+  // Fill product asset tag field
+  _APPEND_STR_VALUE(eeprom.fbw_product_asset);
+
+  // Fill fruid file with dummy file name
+  char fruid_file_name[] = "fruid_1.0";
+  _APPEND_STR_VALUE(fruid_file_name);
+
+  // Field to indicate the last entry
+  g_fruid[i++] = TYPE_LAST;
+
+  // length of the area in multiples of 8 bytes
+  int len = i-PROD_INFO_AREA_OFFSET+1;
+  if (len % LEN_BYTE_SIZE){
+    // For non-multiple of 8 bytes, add one for partial data
+    g_fruid[PROD_INFO_CKSUM_OFFSET] = len/LEN_BYTE_SIZE + 1;
+    // And also increment index to keep checksum byte
+    i += (len % LEN_BYTE_SIZE);
+  } else {
+    g_fruid[PROD_INFO_CKSUM_OFFSET] = len/LEN_BYTE_SIZE;
+  }
+
+  // Calculate zero checksum by adding all the values in product info area
+  for (int j = PROD_INFO_AREA_OFFSET; j < i; j++) {
+    g_fruid[i] += g_fruid[j];
+  }
+
+  // Calculate final cksum by subtraction
+  g_fruid[i] = ZERO_CKSUM_CONST - g_fruid[i];
+
+#undef _APPEND_STR_VALUE
+
+  return;
+}
+
+// Access functions for FRUID
+int
+plat_fruid_size(void) {
+  return WEDGE_FRUID_SIZE;
+}
+
+int
+plat_fruid_data(int offset, int count, unsigned char *data) {
+  // Check for the boundary condition
+  if ((offset + count) > WEDGE_FRUID_SIZE) {
+    return -1;
+  }
+
+  // Copy the FRUID content from the global structure
+  memcpy(data, &(g_fruid[offset]), count);
+
+  return 0;
+}
+
+// Initialize FRUID
+int
+plat_fruid_init(void) {
+
+  // Populate FRUID global structure
+  populate_fruid();
+
+  return 0;
+}