515.43.04

src/common/nvswitch/kernel/ipmi/fru_nvswitch.c

@@ -0,0 +1,158 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "ipmi/fru_nvswitch.h"
+
+#define ASCII_6BIT_TO_8BIT(b)                                  ((b) + 0x20) 
+
+#define OFFSET_SCALE                                           (8)
+
+static NvU8
+_nvswitch_calculate_checksum
+(
+    NvU8 *data,
+    NvU32 size
+)
+{
+    NvU32 i;
+    NvU8 checksum = 0;
+
+    for (i = 0; i < size; ++i)
+    {
+        checksum += data[i];
+    }
+    return checksum;
+}
+
+/*
+ * @brief Retieves from bytes from src and stores into dest.
+ *
+ * @return The size of the field including the type/length byte. 
+ */
+static NvU8
+_nvswitch_get_field_bytes
+(
+    NvU8 *pFieldSrc,
+    NvU8 *pFieldDest
+)
+{
+    NvU32 i;
+    NvU8 type;
+    NvU8 length;
+    NvU8 byte;
+
+    if (*pFieldSrc == NVSWITCH_IPMI_FRU_SENTINEL)
+    {
+        return 0;
+    }
+
+    type = DRF_VAL(SWITCH_IPMI, _FRU_TYPE_LENGTH_BYTE, _TYPE, *pFieldSrc);
+    length = DRF_VAL(SWITCH_IPMI, _FRU_TYPE_LENGTH_BYTE, _LENGTH, *pFieldSrc);
+
+    pFieldSrc++;
+
+    for (i = 0; i < length; ++i)
+    {
+        switch (type)
+        {
+            case NVSWITCH_IPMI_FRU_TYPE_LENGTH_BYTE_TYPE_ASCII_6BIT:
+                byte = ASCII_6BIT_TO_8BIT(pFieldSrc[i]);
+                break;
+            case NVSWITCH_IPMI_FRU_TYPE_LENGTH_BYTE_TYPE_ASCII_8BIT:
+                byte = pFieldSrc[i];
+                break;
+            default:
+                byte = 0;
+                break;
+        }
+        pFieldDest[i] = byte;
+    }
+
+    return (length + 1);
+}
+
+/*
+ * @brief Parse FRU board info from the given rom image.
+ *
+ * @return NVL_SUCCESS if board field is valid
+ */
+NvlStatus
+nvswitch_read_partition_fru_board_info
+(
+    nvswitch_device *device,
+    NVSWITCH_IPMI_FRU_BOARD_INFO *pBoardInfo,
+    NvU8 *pRomImage
+)
+{
+    NVSWITCH_IPMI_FRU_EEPROM_COMMON_HEADER *pEepromHeader;
+    NVSWITCH_IPMI_FRU_EEPROM_BOARD_INFO *pEepromBoardInfo;
+    NvU8 *pInfoSrc;
+
+    if (pBoardInfo == NULL || pRomImage == NULL)
+    {
+        return -NVL_ERR_GENERIC; 
+    }
+    pEepromHeader = (NVSWITCH_IPMI_FRU_EEPROM_COMMON_HEADER *)pRomImage;
+    
+    // zero checksum
+    if (_nvswitch_calculate_checksum((NvU8 *)pEepromHeader, 
+        sizeof(NVSWITCH_IPMI_FRU_EEPROM_COMMON_HEADER)) != 0)
+    {
+        NVSWITCH_PRINT(device, SETUP,
+            "%s: Common header checksum error.\n", __FUNCTION__);
+        return -NVL_ERR_GENERIC;
+    }
+
+    pEepromBoardInfo = (NVSWITCH_IPMI_FRU_EEPROM_BOARD_INFO *)(pRomImage + 
+                           (pEepromHeader->boardInfoOffset * OFFSET_SCALE));
+
+    if (_nvswitch_calculate_checksum((NvU8 *)pEepromBoardInfo, 
+        pEepromBoardInfo->size * OFFSET_SCALE) != 0)
+    {
+        NVSWITCH_PRINT(device, SETUP,
+            "%s: Board info checksum error.\n", __FUNCTION__);
+        return -NVL_ERR_GENERIC;
+    }
+
+    if (pEepromBoardInfo->version != 0x1 || pEepromBoardInfo->languageCode != 0x0)
+    {
+        return -NVL_ERR_NOT_SUPPORTED;
+    }
+
+    nvswitch_os_memset(pBoardInfo, 0, sizeof(NVSWITCH_IPMI_FRU_BOARD_INFO));
+
+    pInfoSrc = (NvU8 *)&pEepromBoardInfo->boardInfo;
+
+    // LS byte first
+    pBoardInfo->mfgDateTime = pInfoSrc[0] | (pInfoSrc[1] << 8) | (pInfoSrc[2] << 16);
+    pInfoSrc += 3;
+    
+    pInfoSrc += _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->mfg);
+    pInfoSrc += _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->productName);
+    pInfoSrc += _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->serialNum);
+    pInfoSrc += _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->partNum);
+    pInfoSrc += _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->fileId);
+    _nvswitch_get_field_bytes(pInfoSrc, (NvU8 *)pBoardInfo->customMfgInfo);
+
+    return NVL_SUCCESS;
+}