Emerson MVME7100 사용자 설명서

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IMAGE_POST
If set, this flag defines the image as being a power-on self-test image. This bit flag is used 
to indicate that the image is a diagnostic and should be run prior to running either USER or 
MCG boot images. POST images are expected, but not required, to return to the boot block 
code upon completion.

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DONT_AUTO_RUN
If set, this flag indicates that the image is not to be selected for automatic execution. A user, 
through the interactive command facility, may specify the image to be executed.

These images are user-developer boot code; for example, a VxWorks bootrom image. Such 
images may expect the system software state to be as follows upon entry:

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The MMU is disabled.

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L1 instruction cache has been initialized and is enabled.

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L1 data cache has been initialized (invalidated) and is disabled.

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L2 cache is disabled.

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L3 cache is disabled.

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RAM has been initialized and is mapped starting at CPU address 0.

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If RAM ECC or parity is supported, RAM has been scrubbed of ECC or parity errors.

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The active flash bank (boot) is mapped from the upper end of the address space.

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If specified by COPY_TO_RAM, the image has been copied to RAM at the address 
specified by ImageRamAddress.

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CPU register R1 (the stack pointer) has been initialized to a value near the end of RAM.

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CPU register R3 is added to the following structure:

typedef struct altBootData {

unsigned int ramSize;/* board's RAM size in MB */

void flashPtr;/* ptr to this image in flash */

char boardType[16];/* name string, eg MVME7100 */

void globalData;/* 16K, zeroed, user defined */

unsigned int reserved[12];

} altBootData_t;