1. u-boot/drivers/mtd/spi/sf_params.c 这个文件定义了支持的nor flash
2. 依据不同的型号更改配置
   ···
   diff --git a/configs/dra7xx_evm_defconfig b/configs/dra7xx_evm_defconfig
   index 128e7b2..44ae9f2 100644
   --- a/configs/dra7xx_evm_defconfig
   +++ b/configs/dra7xx_evm_defconfig
   @@ -36,7 +36,7 @@ CONFIG_CMD_FS_GENERIC=y
   CONFIG_CMD_USB_MASS_STORAGE=y
   CONFIG_SPI_FLASH=y
   CONFIG_SPI_FLASH_BAR=y
   -CONFIG_SPI_FLASH_SPANSION=y
   +CONFIG_SPI_FLASH_WINBOND=y
   CONFIG_SYS_NS16550=y
   CONFIG_TI_QSPI=y
   CONFIG_TIMER=y
   ···

android uboot config nor flash