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util/qemu: Add `qemu` make target 

Add some mechanics to automatically have a `qemu` make target for
supported configurations. So with a QEMU target selected in Kconfig,
one would ideally only have to run `make qemu` to test things.

There are some notable variables that can be set or adapted in
`Makefile.inc` files, the make command line or the environment.

Primarily for `Makefile.inc` use:
 QEMU-y           the QEMU executable
 QEMU_CFG-y       a QEMU config that sets the available default devices,
                  used to run more comprehensive tests by default,
                  e.g. many more PCI devices

For general use:
 QEMU_ARGS        additional command line arguments (default: -serial stdio)
 QEMU_EXTRA_CFGS  additional config files that can add devices

 QEMU_CFG_ARGS    gathers config file related arguments,
                  can be used to override a default config (QEMU_CFG-y)

Examples:

  $ # Run coreboot's default config with additional command line args
  $ make qemu QEMU_ARGS="-cdrom site-local/grml64-small_2018.12.iso"

  $ # Force QEMU's built-in config
  $ make qemu QEMU_CFG_ARGS=

Change-Id: I658f86e05df416ae09be6d432f9a80f7f71f9f75
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46767
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Nico Huber 2020-10-25 12:37:21 +01:00 committed by Patrick Georgi
parent 6df3870012
commit a08328ecff
2 changed files with 47 additions and 1 deletions
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2
Makefile.inc
View File

@ -83,7 +83,7 @@ subdirs-y += src/superio
subdirs-y += $(wildcard src/drivers/*) $(wildcard src/drivers/*/*) $(wildcard src/drivers/*/*/*) subdirs-y += $(wildcard src/drivers/*) $(wildcard src/drivers/*/*) $(wildcard src/drivers/*/*/*)
subdirs-y += src/cpu src/vendorcode subdirs-y += src/cpu src/vendorcode
subdirs-y += util/cbfstool util/sconfig util/nvramtool util/pgtblgen util/amdfwtool subdirs-y += util/cbfstool util/sconfig util/nvramtool util/pgtblgen util/amdfwtool
subdirs-y += util/futility util/marvell util/bincfg util/supermicro subdirs-y += util/futility util/marvell util/bincfg util/supermicro util/qemu
subdirs-y += $(wildcard src/arch/*) subdirs-y += $(wildcard src/arch/*)
subdirs-y += src/mainboard/$(MAINBOARDDIR) subdirs-y += src/mainboard/$(MAINBOARDDIR)
subdirs-y += src/security subdirs-y += src/security

46
util/qemu/Makefile.inc Normal file
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@ -0,0 +1,46 @@
# SPDX-License-Identifier: BSD-3-Clause
# This automatically adds a `qemu` make target if a compatible
# configuration is selected. There are some notable variables
# that can be set or adapted in `Makefile.inc` files, the make
# command line or the environment:
#
# Primarily for `Makefile.inc` use:
# QEMU-y the QEMU executable
# QEMU_CFG-y a QEMU config that sets the available default devices,
# used to run more comprehensive tests by default,
# e.g. many more PCI devices
#
# For general use:
# QEMU_ARGS additional command line arguments (default: -serial stdio)
# QEMU_EXTRA_CFGS additional config files that can add devices
#
# QEMU_CFG_ARGS gathers config file related arguments,
# can be used to override a default config (QEMU_CFG-y)
#
# Examples:
#
# $ # Run coreboot's default config with additional command line args
# $ make qemu QEMU_ARGS="-cdrom site-local/grml64-small_2018.12.iso"
#
# $ # Force QEMU's built-in config
# $ make qemu QEMU_CFG_ARGS=
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_X86_I440FX) ?= qemu-system-x86_64 -M pc
QEMU-$(CONFIG_BOARD_EMULATION_QEMU_X86_Q35) ?= qemu-system-x86_64 -M q35
ifneq ($(QEMU-y),)
QEMU_ARGS ?= -serial stdio
QEMU_EXTRA_CFGS ?=
QEMU_CFG_ARGS ?= \
$(if $(QEMU_CFG-y),-nodefaults) \
$(addprefix -readconfig ,$(QEMU_CFG-y) $(QEMU_EXTRA_CFGS))
qemu: $(obj)/coreboot.rom
$(QEMU-y) $(QEMU_CFG_ARGS) $(QEMU_ARGS) -bios $<
.PHONY: qemu
endif