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sf read 0x0 0x100000 0x700000
Workaround 1: change app execution address from 0x0 to 0x8000.
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sf read 0x8000 0x100000 0x700000
Workaround 2: utilize uboot CPU memory command.
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First read 0x1000 to DRAM
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Next read (0x700000 - 0x1000) to DRAM
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sf read 0x800000 0x100000 0x1000
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cp.b 0x800000 0x0 0x1000
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sf read 0x1000 0x101000 0x700000