Add and use plat_crash_console_flush() API
This API makes sure that all the characters sent to the crash console
are output before returning from it.
Porting guide updated.
Change-Id: I1785f970a40f6aacfbe592b6a911b1f249bb2735
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/plat/arm/common/aarch64/arm_helpers.S b/plat/arm/common/aarch64/arm_helpers.S
index d782020..60ff834 100644
--- a/plat/arm/common/aarch64/arm_helpers.S
+++ b/plat/arm/common/aarch64/arm_helpers.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:
@@ -34,6 +34,7 @@
.weak plat_my_core_pos
.globl plat_crash_console_init
.globl plat_crash_console_putc
+ .globl plat_crash_console_flush
.globl platform_mem_init
@@ -88,6 +89,19 @@
b console_core_putc
endfunc plat_crash_console_putc
+ /* ---------------------------------------------
+ * int plat_crash_console_flush()
+ * Function to force a write of all buffered
+ * data that hasn't been output.
+ * Out : return -1 on error else return 0.
+ * Clobber list : r0 - r1
+ * ---------------------------------------------
+ */
+func plat_crash_console_flush
+ mov_imm x1, PLAT_ARM_CRASH_UART_BASE
+ b console_core_flush
+endfunc plat_crash_console_flush
+
/* ---------------------------------------------------------------------
* We don't need to carry out any memory initialization on ARM
* platforms. The Secure RAM is accessible straight away.