CONFIG_FIT_EMBED might be confused with CONFIG_OF_EMBED, rename it MULTI_DTB_FIT as it is able to get a DTB from a FIT image containing multiple DTBs. Also move the option to the Kconfig dedicated to the DTS options and create a README for this feature. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>master
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MULTI DTB FIT |
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The purpose of this feature is to enable u-boot to select its DTB from a FIT |
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appended at the end of the binary. |
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Usually the DTB is selected by the SPL and passed down to U-Boot. But some |
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platforms don't use the SPL. In this case MULTI_DTB_FIT can used to provide |
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U-Boot with a choice of DTBs. |
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The relevant DTBs are packed into a FIT (list provided by CONFIG__OF_LIST). The |
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FIT is automatically generated at the end of the compilation and appended to |
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u-boot.bin so that U-Boot can locate it and select the correct DTB from inside |
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the FIT. |
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The selection is done using board_fit_config_name_match() (same as what the SPL |
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uses to select the DTB for U-Boot). The selection happens during fdtdec_setup() |
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which is called during before relocation by board_init_f(). |
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