From 038aa29dc283205a993578f0ff3881df12ebdb0a Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 29 May 2013 13:06:22 +0200 Subject: console: add support for QEMU's debugcon Add support for sending debug output to an I/O port. It can be used together with QEMU's isa-debugcon driver to log the coreboot output to a file. The port is configurable and defaults to 0x402 which has established as the de facto standard. For example, SeaBIOS+OVMF [1] use that one too. [1] http://www.linux-kvm.org/page/OVMF Open Virtual Machine Firmware Change-Id: I0803f7fc70030242f80003e25c9449c37d71975e Signed-off-by: Gerd Hoffmann Reviewed-on: http://review.coreboot.org/3331 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Ronald G. Minnich --- src/console/Kconfig | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/console/Kconfig') diff --git a/src/console/Kconfig b/src/console/Kconfig index a613477ab3..46fe2e70a9 100644 --- a/src/console/Kconfig +++ b/src/console/Kconfig @@ -250,6 +250,23 @@ config CONSOLE_CAR_BUFFER_SIZE in the DCACHE based RAM to keep console output before it can be saved in a CBMEM buffer. 3K bytes should be enough even for the BIOS_SPEW level. + +config CONSOLE_DEBUGCON + bool "QEMU debug console output" + depends on BOARD_EMULATION_QEMU_X86 + default y + help + Send coreboot debug output to QEMU's isa-debugcon device: + + qemu-system-x86_64 \ + -chardev file,id=debugcon,path=/dir/file.log \ + -device isa-debugcon,iobase=0x402,chardev=debugcon + +config CONSOLE_DEBUGCON_PORT + hex "QEMU debug console port" + depends on CONSOLE_DEBUGCON + default 0x402 + choice prompt "Default console log level" default DEFAULT_CONSOLE_LOGLEVEL_8 -- cgit v1.2.3