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- This is a demo implementation of a Linux command line tool to access
- the U-Boot's environment variables.
- Configuration is done via #defines in the fw_env.h file. The
- following lines are relevant:
- #define HAVE_REDUND /* For systems with 2 env sectors */
- #define DEVICE1_NAME "/dev/mtd1"
- #define DEVICE2_NAME "/dev/mtd2"
- #define ENV1_SIZE 0x4000
- #define DEVICE1_ESIZE 0x4000
- #define ENV2_SIZE 0x4000
- #define DEVICE2_ESIZE 0x4000
- Current configuration matches the environment layout of the TRAB
- board.
- Un-define HAVE_REDUND, if you want to use the utlities on a system
- that does not have support for redundant environment enabled. The
- DEVICEx_NAME constants define which MTD character device(s) is (are)
- to be used to access the environment. If HAVE_REDUND is undefined,
- DEVICE2_NAME is ignored, as is ENV2_SIZE and DEVICE2_ESIZE. ENVx_SIZE
- defines the size in bytes taken by the environment, which may be less
- then flash sector size, if the environment takes less then 1 sector.
- DEVICEx_ESIZE defines the size of the first sector in the flash
- partition where the environment resides. It is assumed that the
- environment is located in the first ENVx_SIZE bytes of the device
- DEVICEx_NAME.
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