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由 Pali Rohár 提交于
After successful transfer of whole image only two things can happen: - BootROM starts execution of data block, which changes UART baudrate back to 115200 Bd, - board crashes and causes CPU reset In both cases UART baudrate is reset to the default speed. So there is no need to send special magic sequence to inform kwboot that baudrate is going to be reset and kwboot does not need to wait for this event and can do it immediately after BootROM acknowledges end of xmodem transfer. Move ARM code for sending magic sequence from main baudrate change section to binhdr_pre section which is executed only before changing baudrate from the default value of 115200 Bd to some new value. Remove kwboot code waiting for magic sequence after successful xmodem transfer. Rationale: sometimes when using very high UART speeds, magic sequence is damaged and kwboot fails at this last stage. Removal of this magic sequence makes booting more stable. Data transfer protocol (xmodem) is using checksums and retransmit, so it already deals with possible errors on transfer line. Signed-off-by: NPali Rohár <pali@kernel.org> Signed-off-by: NMarek Behún <marek.behun@nic.cz> Reviewed-by: NStefan Roese <sr@denx.de>
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