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docs/firmware: document new options for jump and payload firmwares
Adding relocatable address brings new configuration options for jump and payload firmwares. Describe these new options in documentation. Signed-off-by: Inochi Amaoto <inochiama@outlook.com> Reviewed-by: Anup Patel <anup@brainfault.org>
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Anup Patel

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@@ -62,6 +62,11 @@ file. The parameters currently defined are as follows:
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firmware will pass the FDT address passed by the previous booting stage
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to the next booting stage.
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* **FW_PAYLOAD_FDT_OFFSET** - Address offset from the *FW_TEXT_START* where
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the FDT will be passed to the next booting stage. This offset is used as
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relocatable address of the FDT passed to the next booting stage. If
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*FW_PAYLOAD_FDT_ADDR* is also defined, the firmware will prefer *FW_PAYLOAD_FDT_ADDR*.
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*FW_PAYLOAD* Example
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--------------------
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