Fork of the Genode OS framework
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#!/usr/bin/expect
##
# Reset the target machine or rather run the scenario with Qemu
#
source [genode_dir]/tool/run/qemu.inc
proc check_version {qemu_version qemu_min qemu_max} {
set version_min_list [split $qemu_min ".-"]
set version_min_list_len [llength $version_min_list]
set version_max_list [split $qemu_max ".-"]
set version_max_list_len [llength $version_max_list]
set version_list [split $qemu_version ".-"]
set version_list_len [llength $version_list]
set cmp 0
set cmp_min 0
set cmp_max 0
set i 0
foreach number $version_list {
set min 0
set max 0
if { $i < $version_min_list_len } { set min [lindex $version_min_list $i] }
if { $i < $version_max_list_len } { set max [lindex $version_max_list $i] }
set cmp [expr {$cmp + $number * pow(1000, $version_list_len - $i) }]
set cmp_min [expr {$cmp_min + $min * pow(1000, $version_list_len - $i) }]
set cmp_max [expr {$cmp_max + $max * pow(1000, $version_list_len - $i) }]
incr i
}
return [expr {($cmp_min < $cmp) && ($cmp < $cmp_max)}]
}
##
# Execute scenario using Qemu
#
proc run_power_on { } {
global qemu_args
global qemu
global qemu_spawn_id
#
# Back out on platforms w/o Qemu support
#
if {![is_qemu_available]} { return 0 }
if {[have_spec x86_32]} { set qemu "qemu-system-i386" }
if {[have_spec x86_64]} { set qemu "qemu-system-x86_64" }
if {[have_spec arm]} { set qemu "qemu-system-arm" }
#
# Only the x86_64 variant of Qemu provides the emulation of hardware
# virtualization features used by NOVA. So let's always stick to this
# variant of Qemu when working with NOVA even when operating in 32bit.
#
if {[have_spec nova]} { set qemu "qemu-system-x86_64" }
#
# Redirect serial output to stdio, but only in graphics mode and no
# explicit configuration of serial interfaces is specified in the run
# script. The 'mon' prefix enables the access to the qemu console.
#
if {![regexp -- {-nographic} $qemu_args dummy] &&
![regexp -- {-serial} $qemu_args dummy]} {
append qemu_args " -serial mon:stdio " }
# SVM virtualization is broken after $qemu_good_old and until before $qemu_good_new
# We use "-cpu phenom" when using VMs in Qemu
if {[regexp -- {-cpu phenom} $qemu_args dummy]} {
catch {exec $qemu --version} qemu_version
set qemu_version [regexp -inline {version[ ][0-9]+\.[0-9]+[\.0-9]*} $qemu_version]
set qemu_version [regexp -inline {[0-9]+\.[0-9]+[\.0-9]*} $qemu_version]
set qemu_good_old "2.4.1"
set qemu_good_new "2.8.1"
if {[check_version $qemu_version $qemu_good_old $qemu_good_new]} {
puts "\nYour Qemu version '$qemu_version' is not working with AMD SVM virtualisation"
puts "Known good Qemu versions are until $qemu_good_old and starting with $qemu_good_new\n"
exit
}
}
# tweak emulated platform for specific platforms
if {[have_spec pbxa9]} {
#
# For PBXA9 qemu adjusts provided RAM chips to the -m arg. Thus we
# filter user values and force value that enables all chips that Genode
# expects to be available. Not doing so leads to inexplicable errors.
#
regsub -all {\-m ([0-9])+} $qemu_args "" qemu_args
append qemu_args " -m 768"
append qemu_args " -M realview-pbx-a9"
}
if {[have_spec vpb926]} { append qemu_args " -M versatilepb -m 128 " }
if {[have_spec zynq_qemu]} { append qemu_args " -M xilinx-zynq-a9 -cpu cortex-a9 -m 256 " }
# add devices for specific platforms
if {[have_spec zynq] && [have_spec cadence_gem]} { append qemu_args " -net nic,model=cadence_gem" }
# on x86, we support booting via pxe or iso/disk image
if {[have_spec x86]} {
if {![regexp -- {-m} $qemu_args dummy]} {
append qemu_args " -m 512 "
}
if {[have_include "load/tftp"]} {
append qemu_args " -boot n -tftp [run_dir] -bootp boot/pulsar -no-reboot -no-shutdown "
} else {
if {[have_include "image/iso"]} {
append qemu_args " -cdrom [run_dir].iso "
} else {
if {[have_include "image/disk"]} {
append qemu_args " -drive format=raw,file=[run_dir].img "
} else {
if {[have_include "image/uefi"]} {
append qemu_args " --bios [genode_dir]/tool/boot/tianocore.bin -net none -drive format=raw,file=[run_dir].img "
} else {
puts "Aborting, cannot execute Qemu without a ISO or disk image"
exit -4
} } } }
}
# on ARM, we supply the boot image as kernel
if {[have_spec arm]} { append qemu_args " -kernel [run_dir]/image.elf " }
eval spawn $qemu $qemu_args
set qemu_spawn_id $spawn_id
return true
}