Introduce crash console APIs for crash reporting
This patch introduces platform APIs to initialise and
print a character on a designated crash console.
For the FVP platform, PL011_UART0 is the designated
crash console. The platform porting guide is also updated
to document the new APIs.
Change-Id: I5e97d8762082e0c88c8c9bbb479353eac8f11a66
diff --git a/plat/common/aarch64/platform_helpers.S b/plat/common/aarch64/platform_helpers.S
index f6ac13e..5e2d1b1 100644
--- a/plat/common/aarch64/platform_helpers.S
+++ b/plat/common/aarch64/platform_helpers.S
@@ -37,6 +37,8 @@
.weak platform_is_primary_cpu
.weak platform_check_mpidr
.weak plat_report_exception
+ .weak plat_crash_console_init
+ .weak plat_crash_console_putc
/* -----------------------------------------------------
* int platform_get_core_pos(int mpidr);
@@ -79,3 +81,20 @@
*/
func plat_report_exception
ret
+
+ /* -----------------------------------------------------
+ * Placeholder function which should be redefined by
+ * each platform.
+ * -----------------------------------------------------
+ */
+func plat_crash_console_init
+ mov x0, #0
+ ret
+
+ /* -----------------------------------------------------
+ * Placeholder function which should be redefined by
+ * each platform.
+ * -----------------------------------------------------
+ */
+func plat_crash_console_putc
+ ret