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a786c8d231
Use the combined accessors ioread8() and iowrite8() to read and write 16550 UART registers, to allow the decision between using MMIO and port I/O to be made at runtime. Minimise the increase in code size for x86 by ignoring the register shift, since this is essentially used only for non-x86 SoCs. Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE README File Quick start guide: cd src make For any more detailed instructions, see http://ipxe.org