NUC977

flash spi

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1. 設定PA0、PA1成USB啟動
2. 開啟CONFIG_ENV_IS_IN_SPI_FLASH並編譯UBoot程式

$ vim include/configs/nuc970_evb.h
  48 #define CONFIG_SYS_USE_SPIFLASH
  49 #define CONFIG_SYS_USE_NANDFLASH
  50 #define CONFIG_SYS_NO_FLASH    // that is, no *NOR* flash
  51 //#define CONFIG_ENV_IS_IN_NAND
  52 #define CONFIG_ENV_IS_IN_SPI_FLASH
  53 //#define CONFIG_ENV_IS_IN_MMC

3. 編輯env.txt

$ vim spi_env.txt
  bootcmd=sf probe 0 18000000; sf read 0x7fc0 0x200000 0x1bc3d8; bootm 0x7fc0
  baudrate=115200
  bootdelay=3
  ethact=emac
  ethaddr=00:00:00:11:66:88
  stderr=serial
  stdin=serial
  stdout=serial

4. 燒錄至SPI

$ sudo nuwriter -m spi -d NUC977DK62Y.ini -e 0xffffffff
$ sudo nuwriter -m spi -d NUC977DK62Y.ini -t env -a 0x80000 -w spi_env.txt -v
$ sudo nuwriter -m spi -d NUC977DK62Y.ini -t uboot -a 0xE00000 -w u-boot.bin -v
$ sudo nuwriter -m spi -d NUC977DK62Y.ini -t data -a 0x200000 -w arch/arm/boot/uImage -v

5. 設定PA0、PA1成SPI啟動

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