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Introduce a new GUID Hob gEarly16550UartBaseAddressGuid to cache the base address of the 16550 UART, for when PCD access is not available. Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Ard Biesheuvel <Ard.Biesheuvel@arm.com> Acked-by: Laszlo Ersek <lersek@redhat.com>
23 lines
652 B
C
23 lines
652 B
C
/** @file
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GUID for the HOB that caches the base address of the 16550 serial port, for
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when PCD access is not available.
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Copyright (c) 2020, ARM Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef EARLY_16550_UART_BASE_ADDRESS_H__
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#define EARLY_16550_UART_BASE_ADDRESS_H__
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#define EARLY_16550_UART_BASE_ADDRESS_GUID { \
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0xea67ca3e, 0x1f54, 0x436b, { \
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0x97, 0x88, 0xd4, 0xeb, 0x29, 0xc3, 0x42, 0x67 \
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} \
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}
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extern EFI_GUID gEarly16550UartBaseAddressGuid;
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#endif // EARLY_16550_UART_BASE_ADDRESS_H__
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