SPI Flash Parts

最新推荐文章于 2023-12-16 13:51:53 发布

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本文介绍如何在特定项目中为SPI Flash设备添加配置和支持。通过修改源文件实现新的Flash设备Atmel26DF321的初始化、识别、擦除、编程等操作，并详细展示了配置参数。

Related Files

$(EFI_SOURCE)\$(PROJECT_FAMILY)\$(PROJECT_NAME)\Common.dsc

$(EFI_SOURCE)\Library\RuntimeDxe\FdSupportLib\FdSupportLib.inf

$(EFI_SOURCE)\Library\RuntimeDxe\FdSupportLib\FdSupportLib.c

$(EFI_SOURCE)\$(PROJECT_FAMILY)\$(PROJECT_NAME)\OemServices\ROM\SpiDevice\SpiDevice.c

$(EFI_SOURCE)\$(PROJECT_FAMILY)\$(PROJECT_NAME)\OemServices\ROM\SpiDevice\SpiDevice.h

在 $(EFI_SOURCE)\$(PROJECT_FAMILY)\$(PROJECT_NAME)\OemServices\ROM\SpiDevice\SpiDevice.c下进行以下操作：

1.在FLASH_SPI_DEVICE *SPIFdSupportTable[] =
{
&Atmel26DF321,
&Atmel25DF641,
&Atmel26DF041,
&Atmel26DF081A,
&Atmel26DF161,
&Atmel25DF321A,

......

};下添加Flash

2.FLASH_SPI_DEVICE Atmel26DF321 =
{
{
    Atmel_26DF321,                 // ID
    FLASH_SIZE_4096K,
    "Atmel",
    "26DF321",
    {
      0x0010,                      //size = 4k
      0x0400,                      //mutilpe = 0x400 (4096k/4k)
      0xFFFF
    },
},
InitSPI,
RecognizeSPIDevice,
EraseSPI,
ProgramSPI,
ReadSPI,
ConvertPointerSPI,
&Atmel26DF321_ID
};Flash Device 设置

3.SPI_CONFIG_BLOCK Atmel26DF321_ID =
{
{
    0x9f,                     // Read ID command
    0x20,                     // Erase command
    0x02,                     // Write command
    0x01,                     // Write status command (unsupported in Atmel AT26DF041)
    0x03,                     // Read command
    0x05                      // Read status command (unsupported in Atmel AT26DF041)
},
............

0x400000,                   // Byte size of flash part
0x1000,                     // Byte size of per erase
0                           // Byte size of block protect (Used when block protect == 1)
};Flash配置模块，设置Flash的大小

在$(EFI_SOURCE)\$(PROJECT_FAMILY)\$(PROJECT_NAME)\OemServices\ROM\SpiDevice\SpiDevice.h下定义

Flash DEVICE ID