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When the J784S4-EVM is configured for PCIe Boot, the Bootloaders are to be written to the address specified by particular BARs. The existing documentation hard-codes the address corresponding to the BAR under the assumption that the Root-Complex transferring the Bootloaders is also a J784S4-EVM. The Root-Complex assigns addresses to the BARs depending on the currently available set of free system addresses. Since the free system addresses vary with the Root-Complex being used, instead of hard-coding the BARs, automate the process of identifying the appropriate BAR in the form of a command to be run by the user on the Root-Complex. Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>