search for: debug_io_port

...-off-by: Julian Pidancet <julian.pidancet@gmail.com> --- src/Kconfig | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/Kconfig b/src/Kconfig index cf0bff0..cee0005 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -361,6 +361,7 @@ menu "Debugging" config DEBUG_IO_PORT depends on DEBUG_IO hex "Debug IO port address" + default 0x00e9 if XEN default 0x0402 help Bochs uses the 0x0402 address by default, whereas Xen -- Julian Pidancet

This patch adds support for printing messages through a debug console. QEMU, for example, supports this through the debugcon facility. The benefit is that it's *much* faster than printing over a serial port. To print to I/O port 0x402 (the default used by SeaBIOS and OVMF), add "-DDEBUG_IO_PORT=0x402 -DCORE_DEBUG=1" to the build CFLAGS. To enable a debug console in QEMU that listens to I/O port 0x402 and prints to stdio, add "-debugcon stdio -global isa-debugcon.iobase=0x402" to the QEMU command line. Jonathan Boeing (1): dprintf: add debug console support com32/inclu...