Thanks for the patch. Not an issue with this patch specifically, but it seems this #define EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_16450 should probably be renamed to reflect the latest spec (at https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table), which says:
0x0001 : 16550 subset compatible with DBGP Revision 1 Maybe you could send another patch to do this in SerialPortConsoleRedirectionTable.h ? Hopefully before this value is used by other platforms (this patch introduces the first usage of this value in edk2 and edk2-platforms) > -----Original Message----- > From: Marcin Wojtas <m...@semihalf.com> > Sent: Monday, May 24, 2021 1:29 AM > To: devel@edk2.groups.io > Cc: l...@nuviainc.com; ardb+tianoc...@kernel.org; Samer El-Haj-Mahmoud > <samer.el-haj-mahm...@arm.com>; Sunny Wang > <sunny.w...@arm.com>; g...@semihalf.com; upstr...@semihalf.com; > Marcin Wojtas <m...@semihalf.com> > Subject: [edk2-platforms PATCH 3/6] Marvell: Armada7k8k/OcteonTx: Switch > SPCR UART subtype to 0x1 > > DBG2 ACPI table description [1] specifies three subtypes > related to 16550 UART: > 0x0 - 16550 compatible > 0x1 - 16550 subset > 0x12 - 16550 compatible with parameters defined in > Generic Address Structure (GAS) > > It turned out however, that the Windows OS treats 0x0 subtype as > legacy x86 UART with 8-bit access. ARM SoCs can use types 0x1 (16550 with > fixed mmio32 access) or 0x12 (16550 with fully respected GAS contents). > > Switch Marvell SoCs ACPI UART subtype to 0x1 - thanks to that the > same firmware can run properly with UART output in Windows 10, Linux > and ESXI hypervisor. > > [1] https://docs.microsoft.com/en-us/windows- > hardware/drivers/bringup/acpi-debug-port-table > > Signed-off-by: Marcin Wojtas <m...@semihalf.com> > --- > Silicon/Marvell/Armada7k8k/AcpiTables/Spcr.aslc | 2 +- > Silicon/Marvell/OcteonTx/AcpiTables/T91/Spcr.aslc | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Silicon/Marvell/Armada7k8k/AcpiTables/Spcr.aslc > b/Silicon/Marvell/Armada7k8k/AcpiTables/Spcr.aslc > index 438cf7880e..6efc175bdf 100644 > --- a/Silicon/Marvell/Armada7k8k/AcpiTables/Spcr.aslc > +++ b/Silicon/Marvell/Armada7k8k/AcpiTables/Spcr.aslc > @@ -22,7 +22,7 @@ > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE Spcr = { > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE, > > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_REVISION > > ), > > - > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_ > 16550, // InterfaceType > > + > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_ > 16450, // InterfaceType > > { EFI_ACPI_RESERVED_BYTE, > > EFI_ACPI_RESERVED_BYTE, > > EFI_ACPI_RESERVED_BYTE }, // > Reserved1[3] > > diff --git a/Silicon/Marvell/OcteonTx/AcpiTables/T91/Spcr.aslc > b/Silicon/Marvell/OcteonTx/AcpiTables/T91/Spcr.aslc > index f663d8ade8..2a3415f0a6 100644 > --- a/Silicon/Marvell/OcteonTx/AcpiTables/T91/Spcr.aslc > +++ b/Silicon/Marvell/OcteonTx/AcpiTables/T91/Spcr.aslc > @@ -22,7 +22,7 @@ > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE Spcr = { > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE, > > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_REVISION > > ), > > - > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_ > 16550, // InterfaceType > > + > EFI_ACPI_SERIAL_PORT_CONSOLE_REDIRECTION_TABLE_INTERFACE_TYPE_ > 16450, // InterfaceType > > { EFI_ACPI_RESERVED_BYTE, > > EFI_ACPI_RESERVED_BYTE, > > EFI_ACPI_RESERVED_BYTE }, // > Reserved1[3] > > -- > 2.29.0 IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#75510): https://edk2.groups.io/g/devel/message/75510 Mute This Topic: https://groups.io/mt/83044529/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
