On 6/24/20 3:34 PM, Sami Mujawar wrote:
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.muja...@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheu...@arm.com>
---
ArmVirtPkg/ArmVirtPkg.dec | 2 ++
ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h | 22 ++++++++++++++++++++
2 files changed, 24 insertions(+)
diff --git a/ArmVirtPkg/ArmVirtPkg.dec b/ArmVirtPkg/ArmVirtPkg.dec
index
08ddd68a863eb82778fa7a92b20ac1bff271f5e5..bf82f7f1f3f2a0ce545d87fa93350f56de78328b
100644
--- a/ArmVirtPkg/ArmVirtPkg.dec
+++ b/ArmVirtPkg/ArmVirtPkg.dec
@@ -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 @@ [LibraryClasses]
[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 } }
diff --git a/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h b/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h
new file mode 100644
index
0000000000000000000000000000000000000000..6b76f37a27dac03d6749f31a03e8026023231056
--- /dev/null
+++ b/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h
@@ -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__
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