[kvm-unit-tests PATCH v2 10/18] arm64: efi: Allow running tests directly

[Andrew Jones <andrew.jones@linux.dev>]

Since it's possible to run tests with UEFI and the QEMU -kernel
option (and now the DTB will be found and even the environ will
be set up from an initrd if given with the -initrd option), then
we can skip the loading of EFI tests into a file system and booting
to the shell to run them. Just run them directly. Running directly
is waaaaaay faster than booting the shell first. We keep the UEFI
shell as the default behavior, though, and provide a new configure
option to enable the direct running.

Signed-off-by: Andrew Jones <andrew.jones@linux.dev>
---
 arm/efi/run | 17 +++++++++++++++--
 arm/run     |  4 +++-
 configure   | 17 +++++++++++++++++
 3 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/arm/efi/run b/arm/efi/run
index b7a8418a07f8..af7b593c2bb8 100755
--- a/arm/efi/run
+++ b/arm/efi/run
@@ -18,10 +18,12 @@ elif [ -f /usr/share/edk2/aarch64/QEMU_EFI.silent.fd ]; then
 	DEFAULT_UEFI=/usr/share/edk2/aarch64/QEMU_EFI.silent.fd
 fi
 
+KERNEL_NAME=$1
+
 : "${EFI_SRC:=$TEST_DIR}"
 : "${EFI_UEFI:=$DEFAULT_UEFI}"
 : "${EFI_TEST:=efi-tests}"
-: "${EFI_CASE:=$(basename $1 .efi)}"
+: "${EFI_CASE:=$(basename $KERNEL_NAME .efi)}"
 : "${EFI_TESTNAME:=$TESTNAME}"
 : "${EFI_TESTNAME:=$EFI_CASE}"
 : "${EFI_CASE_DIR:="$EFI_TEST/$EFI_TESTNAME"}"
@@ -80,4 +82,15 @@ uefi_shell_run()
 		"${qemu_args[@]}"
 }
 
-uefi_shell_run
+if [ "$EFI_DIRECT" = "y" ]; then
+	if [ "$EFI_USE_ACPI" != "y" ]; then
+		qemu_args+=(-machine acpi=off)
+	fi
+	$TEST_DIR/run \
+		$KERNEL_NAME \
+		-append "$(basename $KERNEL_NAME) ${cmd_args[@]}" \
+		-bios "$EFI_UEFI" \
+		"${qemu_args[@]}"
+else
+	uefi_shell_run
+fi
diff --git a/arm/run b/arm/run
index 40c2ca66ba7e..efdd44ce86a7 100755
--- a/arm/run
+++ b/arm/run
@@ -60,7 +60,7 @@ if ! $qemu $M -chardev '?' | grep -q testdev; then
 	exit 2
 fi
 
-if [ "$UEFI_SHELL_RUN" != "y" ]; then
+if [ "$UEFI_SHELL_RUN" != "y" ] && [ "$EFI_USE_ACPI" != "y" ]; then
 	chr_testdev='-device virtio-serial-device'
 	chr_testdev+=' -device virtconsole,chardev=ctd -chardev testdev,id=ctd'
 fi
@@ -77,6 +77,8 @@ command="$(migration_cmd) $(timeout_cmd) $command"
 
 if [ "$UEFI_SHELL_RUN" = "y" ]; then
 	ENVIRON_DEFAULT=n run_qemu_status $command "$@"
+elif [ "$EFI_USE_ACPI" = "y" ]; then
+	run_qemu_status $command -kernel "$@"
 else
 	run_qemu $command -kernel "$@"
 fi
diff --git a/configure b/configure
index 05e6702eab06..283c959973fd 100755
--- a/configure
+++ b/configure
@@ -32,6 +32,7 @@ enable_dump=no
 page_size=
 earlycon=
 efi=
+efi_direct=
 
 # Enable -Werror by default for git repositories only (i.e. developer builds)
 if [ -e "$srcdir"/.git ]; then
@@ -89,6 +90,11 @@ usage() {
 	    --[enable|disable]-efi Boot and run from UEFI (disabled by default, x86_64 and arm64 only)
 	    --[enable|disable]-werror
 	                           Select whether to compile with the -Werror compiler flag
+	    --[enable|disable]-efi-direct
+	                           Select whether to run EFI tests directly with QEMU's -kernel
+	                           option. When not enabled, tests will be placed in an EFI file
+	                           system and run from the UEFI shell. Ignored when efi isn't enabled.
+	                           (arm64 only)
 EOF
     exit 1
 }
@@ -168,6 +174,12 @@ while [[ "$1" = -* ]]; do
 	--disable-efi)
 	    efi=n
 	    ;;
+	--enable-efi-direct)
+	    efi_direct=y
+	    ;;
+	--disable-efi-direct)
+	    efi_direct=n
+	    ;;
 	--enable-werror)
 	    werror=-Werror
 	    ;;
@@ -185,6 +197,10 @@ while [[ "$1" = -* ]]; do
     esac
 done
 
+if [ -z "$efi" ] || [ "$efi" = "n" ]; then
+    [ "$efi_direct" = "y" ] && efi_direct=
+fi
+
 if [ -n "$host_key_document" ] && [ ! -f "$host_key_document" ]; then
     echo "Host key document doesn't exist at the specified location."
     exit 1
@@ -423,6 +439,7 @@ GENPROTIMG=${GENPROTIMG-genprotimg}
 HOST_KEY_DOCUMENT=$host_key_document
 CONFIG_DUMP=$enable_dump
 CONFIG_EFI=$efi
+EFI_DIRECT=$efi_direct
 CONFIG_WERROR=$werror
 GEN_SE_HEADER=$gen_se_header
 EOF
-- 
2.43.0