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ee016a7bb0
When using `PLATFORM=generic` defaults, the kernel is loaded at `FW_JUMP_ADDR`, and the FDT is loaded at `FW_JUMP_FDT_ADDR. Therefore, the maximum kernel size before `FW_JUMP_FDT_ADDR` must be increased is `$(( FW_JUMP_FDT_ADDR - FW_JUMP_ADDR ))`. The example calculation assumes `rv64`, and is wrong to boot (off by 0x200000). Fix it and update it for the general case. Signed-off-by: Gabriel Somlo <gsomlo@gmail.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Xiang W <wxjstz@126.com>