usb boot: add xhci mmio example

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20201013091019.22029-1-kraxel@redhat.com

diff --git a/src/boot.c b/src/boot.c
index bd78fb907c5a4eb9fdab292008ff63b56739d25f..1effd802ce06b1fd14ba87a5e054499b4e6fc413 100644 (file)
--- a/src/boot.c
+++ b/src/boot.c
@@ -423,7 +423,9 @@ int bootprio_find_usb(struct usbdevice_s *usbdev, int lun)
 {
     if (!CONFIG_BOOTORDER)
         return -1;
-    // Find usb - for example: /pci@i0cf8/usb@1,2/storage@1/channel@0/disk@0,0
+    // Find usb - examples:
+    //   pci:  /pci@i0cf8/usb@1,2/storage@1/channel@0/disk@0,0
+    //   mmio: /sysbus-xhci@00000000fe900000/storage@1/channel@0/disk@0,0
     char desc[256], *p;
 
     if (usbdev->hub->cntl->pci)