#
# Return Bender option that configures Bender's Intel HWP plugin
#
# \param --bender-intel-hwp-mode   Run the Intel HWP plugin of Bender in the
#                                  given mode. Valid argument values are
#                                     "off",
#                                     "performance",
#                                     "balanced", and
#                                     "power_saving"
#                                  The argument value defaults to
#                                  "performance".
#
proc bender_intel_hwp_mode_option { } {

	set opt [get_cmd_arg_first --bender-intel-hwp-mode "performance"]
	if {$opt == "off"} {
		return "intel_hwp_off"
	} elseif {$opt == "performance"} {
		return "intel_hwp_performance"
	} elseif {$opt == "balanced"} {
		return "intel_hwp_balanced"
	} elseif {$opt == "power_saving"} {
		return "intel_hwp_power_saving"
	} else {
		return "intel_hwp_performance"
	}
}

proc binary_name_ld_lib_so { } { return "ld-nova.lib.so" }
proc binary_name_core_a    { } { return "core-nova.a" }
proc binary_name_timer     { } { return "nova_timer_drv" }

proc kernel_files { } { return hypervisor }
proc kernel_output { } { return "novga serial" }

proc boot_output { } { return "serial" }

proc run_boot_string { } {
	return "\nHypervisor NOVA "
}

proc apply_microcode { } { return false }

proc core_link_address { } { return "0x100000" }


proc core_ld_opts { } {
	set ret { -Wl,-T }
	lappend ret "-Wl,[genode_dir]/repos/base/src/ld/genode.ld"
	lappend ret "-Wl,[genode_dir]/repos/base-nova/src/core/core-bss.ld"
	return $ret
}

##
# Populate directory with binaries on NOVA
#
proc run_boot_dir {binaries} {

	#
	# Build kernel-specific targets if needed
	#
	# If the run scripts imports the base-nova binary archive, [run_dir] is
	# already populated, so we can skip the build.
	#
	set kernel_arg ""
	set core_arg   ""
	set ld_arg     ""
	if {![file exists [run_dir]/genode/hypervisor]}  { set kernel_arg kernel }
	if {![file exists [run_dir]/genode/core-nova.a]} { set core_arg   core/nova }
	if {![file exists [run_dir]/genode/ld.lib.so]}   { set ld_arg     lib/ld-nova }

	set targets "$kernel_arg $core_arg $ld_arg"
	if {[llength $targets]} { build $targets }

	if {$kernel_arg != ""} { copy_file bin/hypervisor     [run_dir]/genode/hypervisor }
	if {$core_arg   != ""} { copy_file bin/core-nova.a    [run_dir]/genode/core-nova.a }
	if {$ld_arg     != ""} { copy_file bin/ld-nova.lib.so [run_dir]/genode/ld.lib.so }

	#
	# Collect contents of the boot image
	#
	build_core_image $binaries

	exec mkdir -p [run_dir]/boot
	exec [cross_dev_prefix]objcopy -O elf32-i386 [run_dir]/genode/hypervisor [run_dir]/boot/hypervisor
	exec [cross_dev_prefix]strip [run_dir]/boot/hypervisor

	remove_genode_dir

	exec mv   [run_dir]/image.elf [run_dir]/boot/image.elf

	#
	# Setup bender options, e.g. serial and applying Intel HWP mode
	#
	set options_bender "[boot_output] [bender_intel_hwp_mode_option]"

	if {[apply_microcode]} {
		exec cp bin/micro.code [run_dir]/boot/
		append options_bender " microcode"
	}

	if {[have_include "image/iso"] || [have_include "image/disk"] || [have_include image/uefi]} {
		#
		# Compress Genode image, to be uncompressed by GRUB
		#
		exec gzip -n [run_dir]/boot/image.elf

		if {[have_include "image/disk"]} {
			install_disk_bootloader_to_run_dir
		}

		if {[have_include "image/iso"]} {
			install_iso_bootloader_to_run_dir
		}

		if {[have_include image/uefi]} {
			install_uefi_bootloader_to_run_dir
			append options_bender " serial_fallback"
		}

		#
		# Generate GRUB2 config file
		#
		set fh [create_header_grub2_config]

		puts $fh "menuentry 'Genode on NOVA' {"
		puts $fh " insmod multiboot2"
		puts $fh " insmod gzio"
		puts $fh " multiboot2 /boot/bender $options_bender"
		if {[apply_microcode]} {
			puts $fh " module2 /boot/micro.code micro.code"
		}
		puts $fh " module2 /boot/hypervisor hypervisor iommu novpid [kernel_output]"
		puts $fh " module2 /boot/image.elf.gz image.elf"
		puts $fh "}"
		close $fh
	}

	#
	# Build image
	#
	run_image

	if {[have_include "load/tftp"]} {
		#
		# Install PXE bootloader pulsar
		#
		install_pxe_bootloader_to_run_dir

		#
		# Generate pulsar config file
		#
		set fh [open "[run_dir]/config-52-54-00-12-34-56" "WRONLY CREAT TRUNC"]
		puts $fh " exec /boot/bender $options_bender"
		if {[apply_microcode]} {
			puts $fh " load /boot/micro.code micro.code"
		}
		puts $fh " load /boot/hypervisor iommu novpid [kernel_output]"
		puts $fh " load /boot/image.elf"
		close $fh

		generate_tftp_config
	}

	if {[have_include "load/ipxe"]} {
		create_ipxe_config
		update_ipxe_boot_dir
		create_symlink_for_iso
	}
}


##
# Base source archive within depot
#
proc base_src { } {

	if {[have_spec x86]} { return base-nova }

	global specs

	puts stderr "Test requires base-nova kernel archive, which is missing for this build configuration"
	puts stderr "  SPECS=\"$specs\""
	exit 0
}