[edk2-devel] [PATCH 1/1] MdePkg: Add new 16550-compatible Serial Port Subtypes to DBG2

[Marcin Wojtas]

The Microsoft Debug Port Table 2 (DBG2) specification revision
May 31, 2017 adds support for 16550-compatible Serial Port
Subtype with parameters defined in Generic Address Structure (GAS) [1]

Reflect that in the EDK2 headers.

[1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table

Signed-off-by: Marcin Wojtas <mw at semihalf.com>
---
 MdePkg/Include/IndustryStandard/DebugPort2Table.h                   | 1 +
 MdePkg/Include/IndustryStandard/SerialPortConsoleRedirectionTable.h | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/MdePkg/Include/IndustryStandard/DebugPort2Table.h b/MdePkg/Include/IndustryStandard/DebugPort2Table.h
index 3faa30b76a..9ccfc1b1ee 100644
--- a/MdePkg/Include/IndustryStandard/DebugPort2Table.h
+++ b/MdePkg/Include/IndustryStandard/DebugPort2Table.h
@@ -47,6 +47,7 @@ typedef struct {
 #define   EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_ARM_SBSA_GENERIC_UART                      0x000e
 #define   EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_DCC                                        0x000f
 #define   EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_BCM2835_UART                               0x0010
+#define   EFI_ACPI_DBG2_PORT_SUBTYPE_SERIAL_16550_WITH_GAS                             0x0012
 #define EFI_ACPI_DBG2_PORT_TYPE_1394                                                   0x8001
 #define   EFI_ACPI_DBG2_PORT_SUBTYPE_1394_STANDARD                                     0x0000
 #define EFI_ACPI_DBG2_PORT_TYPE_USB                                                    0x8002
diff --git a/MdePkg/Include/IndustryStandard/SerialPortConsoleRedirectionTable.h b/MdePkg/Include/IndustryStandard/SerialPortConsoleRedirectionTable.h
index 2066c7895e..7796796afe 100644
--- a/MdePkg/Include/IndustryStandard/SerialPortConsoleRedirectionTable.h
+++ b/MdePkg/Include/IndustryStandard/SerialPortConsoleRedirectionTable.h
@@ -100,6 +100,11 @@ typedef struct {
 ///
 #define EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_BCM2835_UART              0x10
 
+///
+/// 16550-compatible with parameters defined in Generic Address Structure
+///
+#define EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_16550_WITH_GAS            0x12
+
 //
 // Interrupt Type
 //
-- 
2.29.0



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