We would get incorrect data when accessing multiple bytes at one time and going across EEPROM page boundary, so we split data when the length greater than page boundary.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Peicong Li lipeicong@huawei.com Signed-off-by: Heyi Guo heyi.guo@linaro.org Reviewed-by: Leif Lindholm leif.lindholm@linaro.org --- .../Drivers/OemNicConfig2PHi1610/OemNicConfig2P.c | 45 +++++++++++++++++++++- 1 file changed, 43 insertions(+), 2 deletions(-)
diff --git a/Platforms/Hisilicon/D03/Drivers/OemNicConfig2PHi1610/OemNicConfig2P.c b/Platforms/Hisilicon/D03/Drivers/OemNicConfig2PHi1610/OemNicConfig2P.c index 994ed6a..dcaf3aa 100644 --- a/Platforms/Hisilicon/D03/Drivers/OemNicConfig2PHi1610/OemNicConfig2P.c +++ b/Platforms/Hisilicon/D03/Drivers/OemNicConfig2PHi1610/OemNicConfig2P.c @@ -26,6 +26,7 @@ #include <Library/I2CLib.h>
#define EEPROM_I2C_PORT 6 +#define EEPROM_PAGE_SIZE 0x40
EFI_STATUS EFIAPI OemGetMac2P (IN OUT EFI_MAC_ADDRESS *Mac, IN UINTN Port); @@ -110,6 +111,8 @@ EFI_STATUS OemGetMacE2prom(IN UINT32 Port, OUT UINT8 *pucAddr) UINT16 I2cOffset; UINT16 crc16; NIC_MAC_ADDRESS stMacDesc = {0}; + UINT16 RemainderMacOffset; + UINT16 LessSizeOfPage;
Status = I2CInit(0, EEPROM_I2C_PORT, Normal); if (EFI_ERROR(Status)) @@ -124,7 +127,25 @@ EFI_STATUS OemGetMacE2prom(IN UINT32 Port, OUT UINT8 *pucAddr) stI2cDev.Port = EEPROM_I2C_PORT; stI2cDev.SlaveDeviceAddress = I2C_SLAVEADDR_EEPROM; stI2cDev.Socket = 0; - Status = I2CRead(&stI2cDev, I2cOffset, sizeof(NIC_MAC_ADDRESS), (UINT8 *)&stMacDesc); + 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, + //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))) { + Status |= I2CRead( + &stI2cDev, + I2cOffset + LessSizeOfPage, + sizeof(NIC_MAC_ADDRESS) - LessSizeOfPage, + (UINT8 *)&stMacDesc + LessSizeOfPage + ); + } + } if (EFI_ERROR(Status)) { DEBUG((EFI_D_ERROR, "[%a]:[%dL] Call I2cRead failed! p1=0x%x.\n", __FUNCTION__, __LINE__, Status)); @@ -153,6 +174,8 @@ EFI_STATUS OemSetMacE2prom(IN UINT32 Port, IN UINT8 *pucAddr)
stMacDesc.MacLen = MAC_ADDR_LEN; + UINT16 RemainderMacOffset; + UINT16 LessSizeOfPage; gBS->CopyMem((VOID *)(stMacDesc.Mac), (VOID *)pucAddr, MAC_ADDR_LEN);
stMacDesc.Crc16 = make_crc_checksum((UINT8 *)&(stMacDesc.MacLen), sizeof(stMacDesc.MacLen) + MAC_ADDR_LEN); @@ -170,7 +193,25 @@ EFI_STATUS OemSetMacE2prom(IN UINT32 Port, IN UINT8 *pucAddr) stI2cDev.Port = EEPROM_I2C_PORT; stI2cDev.SlaveDeviceAddress = I2C_SLAVEADDR_EEPROM; stI2cDev.Socket = 0; - Status = I2CWrite(&stI2cDev, I2cOffset, sizeof(NIC_MAC_ADDRESS), (UINT8 *)&stMacDesc); + 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, + //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))) { + Status |= I2CWrite( + &stI2cDev, + I2cOffset + LessSizeOfPage, + sizeof(NIC_MAC_ADDRESS) - LessSizeOfPage, + (UINT8 *)&stMacDesc + LessSizeOfPage + ); + } + } if (EFI_ERROR(Status)) { DEBUG((EFI_D_ERROR, "[%a]:[%dL] Call I2cWrite failed! p1=0x%x.\n", __FUNCTION__, __LINE__, Status));