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Kconfig: Document the limitations of the simple SPL_LOAD_FIT path
The "simple" SPL_LOAD_FIT path is the most compliant with the format documented in doc/uImage.FIT/source_file_format.txt. The other two paths to load a FIT are SPL_LOAD_FIT_FULL and the "bootm" command. Since the Kconfig menu is the most likely place for a new user to see these options, it seems like the most logical candidate to document the limitations. This documents the _known_ issues, and is not intended to be a complete list of all follies. Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -202,6 +202,16 @@ config SPL_LOAD_FIT
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particular it can handle selecting from multiple device tree
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particular it can handle selecting from multiple device tree
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and passing the correct one to U-Boot.
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and passing the correct one to U-Boot.
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This path has the following limitations:
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1. "loadables" images, other than FTDs, which do not have a "load"
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property will not be loaded. This limitation also applies to FPGA
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images with the correct "compatible" string.
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2. For FPGA images, only the "compatible" = "u-boot,fpga-legacy"
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loading method is supported.
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3. FDTs are only loaded for images with an "os" property of "u-boot".
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"linux" images are also supported with Falcon boot mode.
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config SPL_LOAD_FIT_ADDRESS
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config SPL_LOAD_FIT_ADDRESS
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hex "load address of fit image"
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hex "load address of fit image"
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depends on SPL_LOAD_FIT
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depends on SPL_LOAD_FIT
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