coreboot: only init usb if necessary

Up until now the call to initialize the USB subsystem was hardcoded for U-Boot running as a coreboot payload. This was used to enable the use of a USB keyboard in the U-Boot shell. However not all boards might need this functionality. As initializing the USB subsystem can take a considerable amount of time (several seconds on some boards), we now initialize the USB subsystem only if U-Boot is configured to use USB keyboards. Signed-off-by: Thomas RIENOESSL <thomas.rienoessl@bachmann.info> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

coreboot: only init usb if necessary
Up until now the call to initialize the USB subsystem was hardcoded for U-Boot running as a coreboot payload. This was used to enable the use of a USB keyboard in the U-Boot shell. However not all boards might need this functionality. As initializing the USB subsystem can take a considerable amount of time (several seconds on some boards), we now initialize the USB subsystem only if U-Boot is configured to use USB keyboards. Signed-off-by: Thomas RIENOESSL <thomas.rienoessl@bachmann.info> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Thomas RIENOESSL · Bin Meng
1 parent 2677a15e58
Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff
arch/x86/cpu/coreboot/coreboot.c
@@ -77,7 +77,8 @@
 		timestamp_add_to_bootstage();
  
 	/* start usb so that usb keyboard can be used as input device */
-	usb_init();
+	if (CONFIG_IS_ENABLED(USB_KEYBOARD))
+		usb_init();
  
 	board_final_cleanup();
...	...	@@ -77,7 +77,8 @@
77	77	timestamp_add_to_bootstage();
78	78
79	79	/* start usb so that usb keyboard can be used as input device */
80		- usb_init();
	80	+ if (CONFIG_IS_ENABLED(USB_KEYBOARD))
	81	+ usb_init();
81	82
82	83	board_final_cleanup();
83	84