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path: root/drivers/console/aarch64/skeleton_console.S
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Diffstat (limited to 'drivers/console/aarch64/skeleton_console.S')
-rw-r--r--drivers/console/aarch64/skeleton_console.S22
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/console/aarch64/skeleton_console.S b/drivers/console/aarch64/skeleton_console.S
index 1583ee7d..01a42672 100644
--- a/drivers/console/aarch64/skeleton_console.S
+++ b/drivers/console/aarch64/skeleton_console.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -38,6 +38,7 @@
.globl console_core_init
.globl console_core_putc
.globl console_core_getc
+ .globl console_core_flush
/* -----------------------------------------------
* int console_core_init(uintptr_t base_addr,
@@ -104,3 +105,22 @@ getc_error:
mov w0, #-1
ret
endfunc console_core_getc
+
+ /* ---------------------------------------------
+ * int console_core_flush(uintptr_t base_addr)
+ * Function to force a write of all buffered
+ * data that hasn't been output.
+ * In : x0 - console base address
+ * Out : return -1 on error else return 0.
+ * Clobber list : x0, x1
+ * ---------------------------------------------
+ */
+func console_core_flush
+ cbz x0, flush_error
+ /* Insert implementation here */
+ mov w0, #0
+ ret
+flush_error:
+ mov w0, #-1
+ ret
+endfunc console_core_flush