Re: [PATCH edk2-platforms v1 22/38] Platform/Hisilicon/D06: Add OemNicLib

[Leif Lindholm <leif.lindholm@linaro.org>]

On Tue, Jul 24, 2018 at 03:09:06PM +0800, Ming Huang wrote:
> OemNicLib provide nic related api like GetMac,SetMac.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ming Huang <ming.huang@linaro.org>
> Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
> ---
>  Platform/Hisilicon/D06/D06.dsc                         |   1 +
>  Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.c   | 571 ++++++++++++++++++++
>  Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.inf |  35 ++
>  3 files changed, 607 insertions(+)
> 
> diff --git a/Platform/Hisilicon/D06/D06.dsc b/Platform/Hisilicon/D06/D06.dsc
> index 43af043cfd..744a4a0d6d 100644
> --- a/Platform/Hisilicon/D06/D06.dsc
> +++ b/Platform/Hisilicon/D06/D06.dsc
> @@ -91,6 +91,7 @@
>  
>    LpcLib|Silicon/Hisilicon/Hi1620/Library/LpcLibHi1620/LpcLib.inf
>    SerialPortLib|ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf
> +  OemNicLib|Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.inf
>  !if $(SECURE_BOOT_ENABLE) == TRUE
>    FileExplorerLib|MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
>  !endif
> diff --git a/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.c b/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.c
> new file mode 100644
> index 0000000000..55ed1625ce
> --- /dev/null
> +++ b/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.c
> @@ -0,0 +1,571 @@
> +/** @file
> +*
> +*  Copyright (c) 2018, Hisilicon Limited. All rights reserved.
> +*  Copyright (c) 2017, Linaro Limited. All rights reserved.
> +*
> +*  This program and the accompanying materials
> +*  are licensed and made available under the terms and conditions of the BSD License
> +*  which accompanies this distribution.  The full text of the license may be found at
> +*  http://opensource.org/licenses/bsd-license.php
> +*
> +*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +*
> +**/
> +
> +#include <Uefi.h>
> +#include <Library/CpldIoLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/I2CLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/OemNicLib.h>
> +
> +#define CPU2_SFP2_100G_CARD_OFFSET   0x25
> +#define CPU1_SFP1_LOCATE_OFFSET      0x16
> +#define CPU1_SFP0_LOCATE_OFFSET      0x12
> +#define CPU2_SFP1_LOCATE_OFFSET      0x21
> +#define CPU2_SFP0_LOCATE_OFFSET      0x19
> +#define CPU2_SFP2_10G_GE_CARD_OFFSET 0x25
> +
> +#define SFP_10G_SPEED   10
> +#define SFP_25G_SPEED   25
> +#define SFP_100G_SPEED  100
> +#define SFP_GE_SPEED    1
> +
> +#define SFP_GE_SPEED_VAL_VENDOR_FINISAR 0x0C
> +#define SFP_GE_SPEED_VAL                0x0D
> +#define SFP_10G_SPEED_VAL               0x67
> +#define SFP_25G_SPEED_VAL               0xFF
> +
> +#define CPU1_9545_I2C_ADDR 0x70
> +#define CPU2_9545_I2C_ADDR 0x71
> +
> +#define FIBER_PRESENT     0
> +#define CARD_PRESENT      1
> +#define I2C_PORT_SFP      4
> +#define CPU2_I2C_PORT_SFP 5
> +
> +#define SOCKET_0                 0
> +#define SOCKET_1                 1
> +#define EEPROM_I2C_PORT          4
> +#define EEPROM_PAGE_SIZE         0x40
> +#define MAC_ADDR_LEN             6
> +#define I2C_OFFSET_EEPROM_ETH0   (0xc00)
> +#define I2C_SLAVEADDR_EEPROM     (0x52)
> +
> +#pragma pack(1)
> +typedef struct {
> +  UINT16 Crc16;
> +  UINT16 MacLen;
> +  UINT8  Mac[MAC_ADDR_LEN];
> +} NIC_MAC_ADDRESS;
> +#pragma pack()
> +
> +ETH_PRODUCT_DESC gEthPdtDesc[ETH_MAX_PORT] =
> +{
> +    {TRUE,   ETH_SPEED_10KM,  ETH_FULL_DUPLEX, ETH_INVALID, ETH_INVALID},
> +    {TRUE,   ETH_SPEED_10KM,  ETH_FULL_DUPLEX, ETH_INVALID, ETH_INVALID},
> +    {FALSE,  ETH_INVALID,     ETH_INVALID,     ETH_INVALID, ETH_INVALID},
> +    {FALSE,  ETH_INVALID,     ETH_INVALID,     ETH_INVALID, ETH_INVALID},
> +    {TRUE,   ETH_SPEED_1000M, ETH_FULL_DUPLEX, ETH_PHY_MVL88E1512_ID, 0},
> +    {TRUE,   ETH_SPEED_1000M, ETH_FULL_DUPLEX, ETH_PHY_MVL88E1512_ID, 1},
> +    {FALSE,  ETH_INVALID,     ETH_INVALID,     ETH_INVALID, ETH_INVALID},
> +    {FALSE,  ETH_INVALID,     ETH_INVALID,     ETH_INVALID, ETH_INVALID}
> +};
> +
> +volatile unsigned char g_2pserveraddr[4][6] = {

VOLATILE UINT8.
No '_' in variable name.
Also, can we please have #defines for that 4 and 6?

> +  {0x00, 0x18, 0x16, 0x29, 0x11, 0x00},
> +  {0x00, 0x18, 0x16, 0x29, 0x11, 0x01},
> +  {0x00, 0x18, 0x16, 0x29, 0x11, 0x02},
> +  {0x00, 0x18, 0x16, 0x29, 0x11, 0x03}
> +};
> +
> +UINT16 crc_tab[256] = {

CrcTable.
Hmm.
This might be useful to add to a core library/driver/protocol. We
don't appear to have it yet. This is another note to the universe.

> +  0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
> +  0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
> +  0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
> +  0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
> +  0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
> +  0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
> +  0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
> +  0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
> +  0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
> +  0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
> +  0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
> +  0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
> +  0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
> +  0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
> +  0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
> +  0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
> +  0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
> +  0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
> +  0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
> +  0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
> +  0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
> +  0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
> +  0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
> +  0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
> +  0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
> +  0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
> +  0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
> +  0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
> +  0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
> +  0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
> +  0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
> +  0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0,
> +};
> +
> +EFI_STATUS
> +GetSfpSpeed (
> +  UINT16 Socket,
> +  UINT16 SfpNum,
> +  UINT8* FiberSpeed
> +  )
> +{
> +  EFI_STATUS  Status;
> +  I2C_DEVICE  SpdDev;
> +  UINT8       SpdReg;
> +  UINT8       SfpSpeed;
> +  UINT32      RegAddr;
> +  UINT16      I2cAddr;
> +  UINT32      SfpPort;
> +
> +  SfpSpeed = 0x0;
> +  if(Socket == 1) {

Space before '('.
Please add a descriptive #define for that 1.

> +    I2cAddr =  CPU2_9545_I2C_ADDR;
> +    SfpPort = CPU2_I2C_PORT_SFP;
> +  } else {
> +    I2cAddr =  CPU1_9545_I2C_ADDR;
> +    SfpPort = I2C_PORT_SFP;
> +  }
> +
> +  Status = I2CInit (Socket, SfpPort, Normal);
> +  if (EFI_ERROR (Status))
> +  {
> +      DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Socket%d Call I2CInit failed! p1=0x%x.\n",
> +             __FUNCTION__, __LINE__, Socket, Status));
> +      return Status;
> +  }
> +
> +  SpdDev.Socket = Socket;
> +  SpdDev.DeviceType         =  DEVICE_TYPE_SPD;
> +  SpdDev.Port               =  SfpPort;
> +  SpdDev.SlaveDeviceAddress =  I2cAddr;
> +  RegAddr                   =  0x0;
> +  SpdReg                    =  1 << (SfpNum - 1);

Please add descriptive #define.

> +
> +  Status = I2CWrite (&SpdDev, RegAddr, 1, &SpdReg);
> +  if (EFI_ERROR (Status)) {
> +      DEBUG ((DEBUG_ERROR, "I2CWrite Error =%r.\n", Status));
> +      return Status;
> +  }
> +
> +  SpdDev.Socket = Socket;
> +  SpdDev.DeviceType         =  DEVICE_TYPE_SPD;
> +  SpdDev.Port               =  SfpPort;
> +  SpdDev.SlaveDeviceAddress =  0x50;

Please add descriptive #define.

> +
> +  RegAddr                   =  12;

Please add descriptive #define.

> +  Status = I2CRead (&SpdDev, RegAddr, 1, &SfpSpeed);
> +  if (EFI_ERROR (Status)) {
> +      DEBUG ((DEBUG_ERROR, "I2CRead Error =%r.\n", Status));
> +      return Status;
> +  }
> +
> +  DEBUG ((DEBUG_INFO, "BR, Nominal, Nominal signalling rate, SfpSpeed:    0x%x\n",
> +         SfpSpeed));
> +
> +  if (SfpSpeed == SFP_10G_SPEED_VAL) {
> +    *FiberSpeed = SFP_10G_SPEED;
> +  } else if (SfpSpeed == SFP_25G_SPEED_VAL) {
> +    *FiberSpeed = SFP_25G_SPEED;
> +  } else if ((SfpSpeed == SFP_GE_SPEED_VAL) || (SfpSpeed == SFP_GE_SPEED_VAL_VENDOR_FINISAR)) {

Long line, please break.

> +    *FiberSpeed = SFP_GE_SPEED;
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +//Fiber1Type/Fiber2Type/Fiber3Type return: SFP_10G_SPEED, SFP_100G_SPEED, SFP_GE_SPEED
> +UINT32
> +GetCpu2FiberType (
> +  UINT8* Fiber1Type,
> +  UINT8* Fiber2Type,
> +  UINT8* Fiber100Ge
> +  )
> +{
> +  EFI_STATUS  Status;
> +  UINT16      SfpNum1;
> +  UINT8       SfpSpeed1;
> +  UINT16      SfpNum2;
> +  UINT8       SfpSpeed2;
> +
> +  SfpNum1 = 0x1;
> +  SfpSpeed1 = SFP_10G_SPEED;
> +  SfpNum2 = 0x2;
> +  SfpSpeed2 = SFP_10G_SPEED;
> +  *Fiber100Ge = 0x0;
> +  *Fiber1Type = SFP_10G_SPEED;
> +  *Fiber2Type = SFP_10G_SPEED;
> +
> +  if ((ReadCpldReg (CPU2_SFP2_100G_CARD_OFFSET) & BIT7) == (CARD_PRESENT << 7)) {

Please add descriptively named helper macros or #defines (& BIT7, << 7).

> +    // 100 Ge card
> +    *Fiber1Type = SFP_10G_SPEED;
> +    *Fiber2Type = SFP_10G_SPEED;
> +    *Fiber100Ge = SFP_100G_SPEED;
> +    DEBUG ((DEBUG_ERROR,"Detect Fiber SFP_100G is Present, Set 100Ge\n"));
> +  } else if ((ReadCpldReg (CPU2_SFP2_10G_GE_CARD_OFFSET) & BIT0) == CARD_PRESENT) {

Please add descriptively named helper macro or #define (& BIT0).

> +    *Fiber100Ge = 0x0;
> +    *Fiber1Type = SFP_10G_SPEED;
> +    *Fiber2Type = SFP_10G_SPEED;
> +    if (ReadCpldReg (CPU2_SFP0_LOCATE_OFFSET) == FIBER_PRESENT) {
> +      // Fiber detected in CPU2 slot0, read speed via i2c
> +      Status = GetSfpSpeed (SOCKET_1, SfpNum1, &SfpSpeed1);
> +      if (EFI_ERROR (Status)) {
> +        DEBUG((DEBUG_ERROR,
> +               "Get Socket1 Sfp%d Speed Error: %r.\n",
> +               SfpNum1,
> +               Status));
> +        return Status;
> +      }
> +      if (SfpSpeed1 == SFP_25G_SPEED) {
> +        // P1 don't support 25G, so set speed to 10G
> +        *Fiber1Type = SFP_10G_SPEED;
> +      } else {
> +        *Fiber1Type = SfpSpeed1;
> +      }
> +    } else {
> +      // No fiber, set speed to 10G
> +      *Fiber1Type = SFP_10G_SPEED;
> +    }
> +
> +    if (ReadCpldReg (CPU2_SFP1_LOCATE_OFFSET) == FIBER_PRESENT) {
> +      // Fiber detected in CPU2 slot1, read speed via i2c
> +      Status = GetSfpSpeed (SOCKET_1, SfpNum2, &SfpSpeed2);
> +      if (EFI_ERROR (Status)) {
> +        DEBUG ((DEBUG_ERROR, "Get Sfp%d Speed Error: %r.\n", SfpNum2, Status));
> +        return Status;
> +      }
> +      if (SfpSpeed2 == SFP_25G_SPEED) {
> +        *Fiber2Type = SFP_10G_SPEED;
> +      } else {
> +        *Fiber2Type = SfpSpeed2;
> +      }
> +    } else {
> +      // No fiber, set speed to 10G
> +      *Fiber2Type = SFP_10G_SPEED;
> +    }
> +  } else {
> +    // 100Ge/10Ge/Ge Fiber is not found.
> +    *Fiber1Type = SFP_10G_SPEED;
> +    *Fiber2Type = SFP_10G_SPEED;
> +    *Fiber100Ge = 0x0;
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +//Fiber1Type/Fiber2Type return: SFP_10G_SPEED, SFP_25G_SPEED, SFP_GE_SPEED
> +UINT32
> +GetCpu1FiberType (
> +  UINT8* Fiber1Type,
> +  UINT8* Fiber2Type
> +  )
> +{
> +  EFI_STATUS  Status;
> +  UINT16      SfpNum1;
> +  UINT8       SfpSpeed1;
> +  UINT16      SfpNum2;
> +  UINT8       SfpSpeed2;
> +
> +  SfpNum1 = 0x1;
> +  SfpSpeed1 = SFP_10G_SPEED;
> +  SfpNum2 = 0x2;
> +  SfpSpeed2 = SFP_10G_SPEED;
> +  *Fiber1Type = SFP_10G_SPEED;
> +  *Fiber2Type = SFP_10G_SPEED;
> +  // Fiber detected in CPU1 slot0, read speed via i2c
> +  if (ReadCpldReg (CPU1_SFP0_LOCATE_OFFSET) == FIBER_PRESENT) {
> +    Status = GetSfpSpeed (SOCKET_0, SfpNum1, &SfpSpeed1);
> +    if (EFI_ERROR (Status)) {
> +      DEBUG ((DEBUG_ERROR, "Get Socket0 Sfp%d Speed Error: %r.\n",
> +              SfpNum1, Status));
> +      return Status;
> +    }
> +    *Fiber1Type = SfpSpeed1;
> +  } else {
> +    *Fiber1Type = SFP_10G_SPEED;
> +  }
> +
> +  // Fiber detected in CPU1 slot1, read speed via i2c
> +  if (ReadCpldReg (CPU1_SFP1_LOCATE_OFFSET) == FIBER_PRESENT) {
> +    Status = GetSfpSpeed (SOCKET_0, SfpNum2, &SfpSpeed2);
> +    if (EFI_ERROR (Status)) {
> +      *Fiber2Type = SFP_10G_SPEED;
> +      DEBUG ((DEBUG_ERROR, "Get Sfp%d Speed Error: %r.\n", SfpNum2, Status));
> +      return Status;
> +    }
> +    *Fiber2Type = SfpSpeed2;
> +  } else {
> +    *Fiber2Type = SFP_10G_SPEED;
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +UINT16 make_crc_checksum (

MakeCrcChecksum

> +  UINT8 *buf,

Buffer.

> +  UINT32 len

Length.

> +  )
> +{
> +  UINT16 StartCRC = 0;
> +
> +  if (len > (512 * 1024)) {

SIZE_512KB?

> +    return 0;
> +  }
> +
> +  if (buf == NULL) {
> +    return 0;
> +  }
> +
> +  while (len) {
> +    StartCRC = crc_tab [((UINT8) ((StartCRC >> 8) & 0xff)) ^ *(buf++)] ^
> +               ((UINT16) (StartCRC << 8));
> +    len--;
> +  }
> +
> +  return StartCRC;
> +}
> +
> +
> +EFI_STATUS
> +OemGetMacE2prom(
> +  IN  UINT32 Port,
> +  OUT UINT8  *pucAddr

Hungarian notation. Drop 'puc'.

> +  )
> +{
> +  I2C_DEVICE       stI2cDev = {0};

Hungarian notation. Drop 'st'.

> +  EFI_STATUS       Status;
> +  UINT16           I2cOffset;
> +  UINT16           crc16;

Crc16.

> +  NIC_MAC_ADDRESS  stMacDesc = {0};

Hungarian notation. Drop 'st'.

> +  UINT16           RemainderMacOffset;
> +  UINT16           LessSizeOfPage;
> +  UINT32           i = 0;

I.

> +
> +  Status = I2CInit (0, EEPROM_I2C_PORT, Normal);
> +  if (EFI_ERROR (Status))
> +  {
> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Call I2CInit failed! p1=0x%x.\n",
> +            __FUNCTION__, __LINE__, Status));
> +    return Status;
> +  }
> +
> +  I2cOffset = I2C_OFFSET_EEPROM_ETH0 + (Port * sizeof (NIC_MAC_ADDRESS));
> +
> +  stI2cDev.DeviceType = DEVICE_TYPE_E2PROM;
> +  stI2cDev.Port = EEPROM_I2C_PORT;
> +  stI2cDev.SlaveDeviceAddress = I2C_SLAVEADDR_EEPROM;
> +  stI2cDev.Socket = 0;
> +  RemainderMacOffset = I2cOffset % EEPROM_PAGE_SIZE;
> +  LessSizeOfPage = EEPROM_PAGE_SIZE - RemainderMacOffset;
> +  //The length of NIC_MAC_ADDRESS is 10 bytes long,
> +  //It surly less than EEPROM page size, so we could
> +  //code as bellow, check the address whether across the page boundary,

bellow -> below

> +  //and split the data when across page boundary.
> +  if (sizeof (NIC_MAC_ADDRESS) <= LessSizeOfPage) {
> +    Status = I2CRead (&stI2cDev, I2cOffset, sizeof (NIC_MAC_ADDRESS), (UINT8 *) &stMacDesc);
> +  } else {
> +    Status = I2CRead (&stI2cDev, I2cOffset, LessSizeOfPage, (UINT8 *) &stMacDesc);
> +    if (!(EFI_ERROR (Status))) {

Parantheses around EFI_ERROR not needed.

> +      Status |= I2CRead (
> +                  &stI2cDev,
> +                  I2cOffset + LessSizeOfPage,
> +                  sizeof (NIC_MAC_ADDRESS) - LessSizeOfPage,
> +                  (UINT8 *) &stMacDesc + LessSizeOfPage
> +                );
> +    }
> +  }
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Call I2cRead failed! p1=0x%x.\n",
> +            __FUNCTION__, __LINE__, Status));
> +    return Status;
> +  }
> +
> +  crc16 = make_crc_checksum (
> +            (UINT8 *) & (stMacDesc.MacLen),
> +            sizeof (stMacDesc.MacLen) + sizeof (stMacDesc.Mac)
> +          );
> +  if ((crc16 != stMacDesc.Crc16) || (0 == crc16)) {
> +    return EFI_NOT_FOUND;
> +  }
> +
> +  for (i = 0; i < MAC_ADDR_LEN; i++) {
> +    pucAddr[i] = stMacDesc.Mac[i];
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +
> +EFI_STATUS
> +OemSetMacE2prom (
> +  IN UINT32 Port,
> +  IN UINT8 *pucAddr

Hungarian notation. Drop 'puc'.

> +  )
> +{
> +  I2C_DEVICE       stI2cDev = {0};

Hungarian notation. Drop 'st'.

> +  EFI_STATUS       Status;
> +  UINT16           I2cOffset;
> +  NIC_MAC_ADDRESS  stMacDesc = {0};

Hungarian notation. Drop 'st'.

> +  UINT32           i;

I.

> +  UINT16           RemainderMacOffset;
> +  UINT16           LessSizeOfPage;
> +
> +  i = 0;
> +  stMacDesc.MacLen = MAC_ADDR_LEN;
> +
> +  for (i = 0; i < MAC_ADDR_LEN; i++) {
> +    stMacDesc.Mac[i] = pucAddr[i];
> +  }
> +
> +  stMacDesc.Crc16 = make_crc_checksum (
> +                      (UINT8 *) & (stMacDesc.MacLen),
> +                      sizeof (stMacDesc.MacLen) + MAC_ADDR_LEN
> +                    );
> +
> +  Status = I2CInit (0, EEPROM_I2C_PORT, Normal);
> +  if (EFI_ERROR (Status)) {
> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Call I2CInit failed! p1=0x%x.\n",
> +           __FUNCTION__, __LINE__, Status));
> +    return Status;
> +  }
> +
> +  I2cOffset = I2C_OFFSET_EEPROM_ETH0 + (Port * sizeof (NIC_MAC_ADDRESS));
> +
> +  stI2cDev.DeviceType = DEVICE_TYPE_E2PROM;
> +  stI2cDev.Port = EEPROM_I2C_PORT;
> +  stI2cDev.SlaveDeviceAddress = I2C_SLAVEADDR_EEPROM;
> +  stI2cDev.Socket = 0;
> +  RemainderMacOffset = I2cOffset % EEPROM_PAGE_SIZE;
> +  LessSizeOfPage = EEPROM_PAGE_SIZE - RemainderMacOffset;
> +  //The length of NIC_MAC_ADDRESS is 10 bytes long,
> +  //It surly less than EEPROM page size, so we could
> +  //code as bellow, check the address whether across the page boundary,

bellow -> below

> +  //and split the data when across page boundary.
> +  if (sizeof (NIC_MAC_ADDRESS) <= LessSizeOfPage) {
> +    Status = I2CWrite (
> +               &stI2cDev,
> +               I2cOffset,
> +               sizeof (NIC_MAC_ADDRESS),
> +               (UINT8 *) &stMacDesc
> +             );
> +  } else {
> +    Status = I2CWrite (&stI2cDev, I2cOffset, LessSizeOfPage, (UINT8 *) &stMacDesc);
> +    if (!(EFI_ERROR (Status))) {

Parantheses around EFI_ERROR are not needed.

> +      Status |= I2CWrite (
> +                  &stI2cDev,
> +                  I2cOffset + LessSizeOfPage,
> +                  sizeof (NIC_MAC_ADDRESS) - LessSizeOfPage,
> +                  (UINT8 *) &stMacDesc + LessSizeOfPage
> +                );
> +    }
> +  }
> +  if (EFI_ERROR (Status))
> +  {

Move { to previous line.

> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Call I2cWrite failed! p1=0x%x.\n",
> +            __FUNCTION__, __LINE__, Status));
> +    return Status;
> +  }
> +  return EFI_SUCCESS;
> +}
> +
> +EFI_STATUS
> +EFIAPI
> +OemGetMac (
> +  IN OUT EFI_MAC_ADDRESS *Mac,
> +  IN     UINTN           Port
> +  )
> +{
> +  EFI_STATUS Status;
> +
> +  if (NULL == Mac) {

No jeopardy tests. Turn the comparison around to the logical order.

> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Mac buffer is null!\n",
> +            __FUNCTION__, __LINE__));
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  Status = OemGetMacE2prom (Port, Mac->Addr);
> +  if ((EFI_ERROR (Status))) {

Parantheses around EFI_ERROR are not needed.

> +    DEBUG ((DEBUG_ERROR,
> +      "[%a]:[%dL] Cannot get MAC from EEPROM, Status: %r; using default MAC.\n",
> +      __FUNCTION__, __LINE__, Status));
> +
> +    Mac->Addr[0] = 0x00;
> +    Mac->Addr[1] = 0x18;
> +    Mac->Addr[2] = 0x82;
> +    Mac->Addr[3] = 0x2F;
> +    Mac->Addr[4] = 0x02;
> +    Mac->Addr[5] = Port;

I'm not super happy about this. This would wreak havoc on any real
network.
Arguably, a server platform should just fail hard at this point.
I would certainly appreciate a Pcd making that an option.

Otherwise, some sort of proper scheme would need to be implemented:
using the 'locally administered range' of MAC addresses, and ensuring
addresses are only allocated after checking for possible duplicates on
the network.

> +    return EFI_SUCCESS;
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +EFI_STATUS
> +EFIAPI
> +OemSetMac (
> +  IN EFI_MAC_ADDRESS *Mac,
> +  IN UINTN           Port
> +  )
> +{
> +  EFI_STATUS Status;
> +
> +  if (NULL == Mac) {

No jeopardy tests.

> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Mac buffer is null!\n",
> +            __FUNCTION__, __LINE__));
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  Status = OemSetMacE2prom (Port, Mac->Addr);
> +  if ((EFI_ERROR (Status))) {

Unneeded parantheses.

> +    DEBUG ((DEBUG_ERROR, "[%a]:[%dL] Set mac failed!\n", __FUNCTION__, __LINE__));
> +    return Status;
> +  }
> +
> +  return EFI_SUCCESS;
> +}
> +
> +UINT32
> +OemEthFindFirstSP (
> +  VOID
> +  )
> +{
> +  UINT32 i;

I.

> +
> +  for (i = 0; i < ETH_MAX_PORT; i++) {
> +    if (gEthPdtDesc[i].Valid == TRUE) {
> +      return i;
> +    }
> +  }
> +
> +  return ETH_INVALID;
> +}
> +
> +ETH_PRODUCT_DESC *
> +OemEthInit (
> +  UINT32 port
> +  )
> +{
> +  return (ETH_PRODUCT_DESC *)(&(gEthPdtDesc[port]));
> +}
> +
> +
> +BOOLEAN
> +OemIsInitEth (
> +  UINT32 Port
> +  )
> +{
> +  return TRUE;
> +}
> diff --git a/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.inf b/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.inf
> new file mode 100644
> index 0000000000..ac849cb992
> --- /dev/null
> +++ b/Platform/Hisilicon/D06/Library/OemNicLib/OemNicLib.inf
> @@ -0,0 +1,35 @@
> +#/** @file
> +#
> +#    Copyright (c) 2018, Hisilicon Limited. All rights reserved.
> +#    Copyright (c) 2017, Linaro Limited. All rights reserved.
> +#
> +#    This program and the accompanying materials
> +#    are licensed and made available under the terms and conditions of the BSD License
> +#    which accompanies this distribution. The full text of the license may be found at
> +#    http://opensource.org/licenses/bsd-license.php
> +#
> +#    THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +#    WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +#
> +#**/
> +
> +[Defines]
> +  INF_VERSION                    = 0x00010005

0x0001001a

> +  BASE_NAME                      = OemNicLib
> +  FILE_GUID                      = 520F872C-FFCF-4EF3-AC01-85BDB0816DCE
> +  MODULE_TYPE                    = BASE
> +  VERSION_STRING                 = 1.0
> +  LIBRARY_CLASS                  = OemNicLib
> +
> +[Sources.common]
> +  OemNicLib.c
> +
> +[Packages]
> +  MdePkg/MdePkg.dec
> +  MdeModulePkg/MdeModulePkg.dec
> +  ArmPkg/ArmPkg.dec
> +  Silicon/Hisilicon/HisiPkg.dec

Please sort alphabetically.

> +
> +[LibraryClasses]
> +  I2CLib
> +  CpldIoLib

Please sort alphabetically.

/
    Leif

> -- 
> 2.17.0
>