That being said, for this particular patch Reviewed-By: Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com>
> -----Original Message----- > From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Samer > El-Haj-Mahmoud via groups.io > Sent: Monday, May 24, 2021 7:07 AM > To: Marcin Wojtas <m...@semihalf.com>; devel@edk2.groups.io > Cc: l...@nuviainc.com; ardb+tianoc...@kernel.org; Sunny Wang > <sunny.w...@arm.com>; g...@semihalf.com; upstr...@semihalf.com; > Samer El-Haj-Mahmoud <samer.el-haj-mahm...@arm.com> > Subject: Re: [edk2-devel] [edk2-platforms PATCH 3/6] Marvell: > Armada7k8k/OcteonTx: Switch SPCR UART subtype to 0x1 > > 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. 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