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ArmVirtPkg: GUID Hob for 16550 UART base address 

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>
This commit is contained in:
Sami Mujawar 2020-10-02 22:14:02 +01:00 committed by mergify[bot]
parent 1c03498a25
commit d30886d24c
2 changed files with 24 additions and 0 deletions
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2
ArmVirtPkg/ArmVirtPkg.dec
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@ -1,6 +1,7 @@
#/** @file
#
# Copyright (c) 2014, Linaro Limited. All rights reserved.
# Copyright (c) 2020, ARM Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@ -30,6 +31,7 @@
[Guids.common]
gArmVirtTokenSpaceGuid = { 0x0B6F5CA7, 0x4F53, 0x445A, { 0xB7, 0x6E, 0x2E, 0x36, 0x5B, 0x80, 0x63, 0x66 } }
gEarlyPL011BaseAddressGuid = { 0xB199DEA9, 0xFD5C, 0x4A84, { 0x80, 0x82, 0x2F, 0x41, 0x70, 0x78, 0x03, 0x05 } }
gEarly16550UartBaseAddressGuid = { 0xea67ca3e, 0x1f54, 0x436b, { 0x97, 0x88, 0xd4, 0xeb, 0x29, 0xc3, 0x42, 0x67 } }
gArmVirtVariableGuid = { 0x50bea1e5, 0xa2c5, 0x46e9, { 0x9b, 0x3a, 0x59, 0x59, 0x65, 0x16, 0xb0, 0x0a } }

22
ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h Normal file
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@ -0,0 +1,22 @@
/** @file
GUID for the HOB that caches the base address of the 16550 serial port, for
when PCD access is not available.
Copyright (c) 2020, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef EARLY_16550_UART_BASE_ADDRESS_H__
#define EARLY_16550_UART_BASE_ADDRESS_H__
#define EARLY_16550_UART_BASE_ADDRESS_GUID { \
0xea67ca3e, 0x1f54, 0x436b, { \
0x97, 0x88, 0xd4, 0xeb, 0x29, 0xc3, 0x42, 0x67 \
} \
}
extern EFI_GUID gEarly16550UartBaseAddressGuid;
#endif // EARLY_16550_UART_BASE_ADDRESS_H__