On Sep 7, 2023, at 8:00 AM, Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org> wrote:
Is there a way to have VT100 (or any other black/white, non-ANSI) terminal for UEFI Shell?
I do many runs of QEMU/sbsa-ref with logging and all those ANSI colour codes only make problems.
EFI_GUID *mTerminalType[] = {
&gEfiPcAnsiGuid,
&gEfiVT100Guid,
&gEfiVT100PlusGuid,
&gEfiVTUTF8Guid,
&gEfiTtyTermGuid,
&gEdkiiLinuxTermGuid,
&gEdkiiXtermR6Guid,
&gEdkiiVT400Guid,
&gEdkiiSCOTermGuid
};
CHAR16 *mSerialConsoleNames[] = {
L"PC-ANSI Serial Console",
L"VT-100 Serial Console",
L"VT-100+ Serial Console",
L"VT-UTF8 Serial Console",
L"Tty Terminal Serial Console",
L"Linux Terminal Serial Console",
L"Xterm R6 Serial Console",
L"VT-400 Serial Console",
L"SCO Terminal Serial Console"
};
#define gVtUtf8Terminal \
{ \
{ \
MESSAGING_DEVICE_PATH, \
MSG_VENDOR_DP, \
{ \
(UINT8) (sizeof (VENDOR_DEVICE_PATH)), \
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8) \
} \
}, \
DEVICE_PATH_MESSAGING_VT_UTF8 \
}
Thus we get to the TL;DR part… The console NVRAM variables that point to the UART has a MESSAGING_DEVICE_PATH MSG_VENDOR_DP node after the UART definition that has a UUID (EFI_GUID) that defines the type of terminal emulation to use.
The definition of the ConIn and ConOut variables is here [4]