scripts: build-qemu: Allow enabling TKey access

Provide a -T/--tkey option to enable access to a USB-attached Tillitis
TKey.

Series-to: concept
Series-cc: heinrich
Cover-letter:
Bootstage and script enhancements
This series collects together a few improvements to the bootstage
subsystem, principally some new tests.

It also adds support for ACPI FPDT which is a way of passing timing
information to the OS.

A bug fix is provided for mouse clicks with expo.

Finally the series includes some new options for the build-efi script
for networking, spice, etc.
END

Signed-off-by: Simon Glass <sjg@chromium.org>

boot/bootm_final.c

@@ -5,9 +5,11 @@
  * Copyright 2025 Simon Glass <sjg@chromium.org>
  */
 
+#include <acpi/acpi_table.h>
 #include <bootm.h>
 #include <bootstage.h>
 #include <event.h>
+#include <timer.h>
 #include <usb.h>
 #include <dm/root.h>
 
@@ -25,6 +27,21 @@ void bootm_final(enum bootm_final_t flags)
 
 	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
 
+	/* Update FPDT boot performance record if it exists */
+	if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE)) {
+		struct acpi_fpdt_boot *fpdt;
+
+		fpdt = acpi_get_fpdt_boot();
+		if (fpdt) {
+			u64 time;
+
+			time = timer_get_boot_us();
+			fpdt->ebs_entry = time;
+			fpdt->ebs_exit = time;
+			acpi_fix_fpdt_checksum();
+		}
+	}
+
 	if (IS_ENABLED(CONFIG_BOOTSTAGE_FDT) && IS_ENABLED(CONFIG_CMD_FDT))
 		bootstage_fdt_add_report();
 	if (IS_ENABLED(CONFIG_BOOTSTAGE_REPORT))

lib/acpi/acpi_table.c

@@ -785,3 +785,14 @@ int acpi_fix_fpdt_checksum(void)
 
 	return 0;
 }
+
+static int acpi_create_fpdt(struct acpi_ctx *ctx,
+			    const struct acpi_writer *entry)
+{
+	u64 uboot_start;
+
+	uboot_start = bootstage_get_time(BOOTSTAGE_ID_START_UBOOT_F);
+
+	return acpi_write_fpdt(ctx, uboot_start);
+}
+ACPI_WRITER(6fpdt, "FPDT", acpi_create_fpdt, 0);

scripts/build-efi

@@ -19,6 +19,7 @@ from argparse import ArgumentParser
 import os
 from pathlib import Path
 import shutil
+import sys
 
 import build_helper
 
@@ -47,6 +48,10 @@ def parse_args():
                         help='Package up the payload instead of the app')
     parser.add_argument('-P', '--partition', action='store_true',
                         help='Create a partition table')
+    parser.add_argument('-c', '--spice', action='store_true',
+                        help='Enable SPICE for clipboard sharing')
+    parser.add_argument('-N', '--net', action='store_true',
+                        help='Enable networking (with SSH forwarding on port 2222)')
     parser.add_argument('-v', '--verbose', action='store_true',
                         help='Show executed commands')
 
@@ -115,6 +120,12 @@ class BuildEfi:
             else:  # x86
                 extra += ['-device', 'qemu-xhci', '-device', 'usb-kbd',
                           '-device', 'usb-mouse']
+
+            # This uses QEMU's GTK clipboard integration with SPICE vdagent
+            if self.args.spice:
+                extra += ['-device', 'virtio-serial-pci']
+                extra += ['-chardev', 'qemu-vdagent,id=spicechannel0,name=vdagent,clipboard=on']
+                extra += ['-device', 'virtserialport,chardev=spicechannel0,name=com.redhat.spice.0']
             extra += ['-serial', 'mon:stdio']
             serial_msg = ''
         if self.args.kvm:
@@ -134,10 +145,15 @@ class BuildEfi:
 
         cmd = [qemu]
         cmd += '-m', mem
-        cmd += '-nic', 'none'
+        if self.args.net:
+            cmd += '-netdev', 'user,id=net0,hostfwd=tcp::2222-:22'
+            cmd += '-device', 'virtio-net-pci,netdev=net0'
+        else:
+            cmd += '-nic', 'none'
         cmd += extra
         self.helper.add_qemu_args(self.args, cmd, base_hd=1)
         tout.info(' '.join(cmd))
+        sys.stdout.flush()
         command.run(*cmd)
 
     def setup_files(self, build, build_type, dst):

scripts/build-qemu

@@ -51,6 +51,8 @@ def parse_args():
                         help='Run qboot instead of U-Boot')
     parser.add_argument('-x', '--xpl', action='store_true',
                         help='Use xPL image rather than U-Boot proper')
+    parser.add_argument('-T', '--tkey', action='store_true',
+                        help='Enable TKey USB passthrough for testing')
     parser.add_argument(
         '--sct-seq',
         help='SCT sequence-file to be written into the SCT image if -e')
@@ -153,6 +155,9 @@ class BuildQemu:
             default_bios = 'u-boot.rom'
             self.helper.qemu = 'qemu-system-i386'
             self.qemu_extra.extend(['-machine', 'q35'])
+            if args.tkey:
+                # Pass through TKey USB device to QEMU
+                self.qemu_extra.extend(['-device', 'usb-host,vendorid=0x1207,productid=0x8887'])
             if self.helper.bitness == 64:
                 self.board = 'qemu-x86_64'
                 self.helper.qemu = 'qemu-system-x86_64'