Add external interrupt support for standard PPE's

Change-Id: I5ac49d4a9aace2dfbe3cdebf0dd7942c1e22da4e
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/16240
Reviewed-by: Glenn R. Miles <milesg@us.ibm.com>
Tested-by: Glenn R. Miles <milesg@us.ibm.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/pk/std/std_init.c b/pk/std/std_init.c
new file mode 100644
index 00000000..b0aae325
--- /dev/null
+++ b/pk/std/std_init.c
@@ -0,0 +1,50 @@
+//-----------------------------------------------------------------------------
+// *! (C) Copyright International Business Machines Corp. 2014
+// *! All Rights Reserved -- Property of IBM
+// *! *** IBM Confidential ***
+//-----------------------------------------------------------------------------
+
+/// \file std_init.c
+/// \brief PK initialization for a standard PPE.
+///
+/// The entry points in this routine are used during initialization.  This
+/// code space can be deallocated and reassigned after application
+/// initialization if required.
+
+#include "pk.h"
+
+/// Standard PPE environment initial setup.
+///
+/// This is setup common to all standard PPE Macro applications.  This setup takes place
+/// during boot, before main() is called.
+
+void
+__hwmacro_setup(void)
+{
+    //mask all interrupts
+    out64(STD_LCL_EIMR_OR, 0xffffffffffffffffull);
+
+    //Set all interrupts to active low, level sensitive by default
+    out64(STD_LCL_EIPR_CLR, 0xffffffffffffffffull);
+    out64(STD_LCL_EITR_CLR, 0xffffffffffffffffull);
+
+    //set up the configured type
+    out64(STD_LCL_EITR_OR, g_ext_irqs_type);
+
+    //set up the configured polarity
+    out64(STD_LCL_EIPR_OR, g_ext_irqs_polarity);
+
+    //clear the status of all active-high interrupts (has no affect on
+    //level sensitive interrupts)
+    out64(STD_LCL_EISR_CLR, g_ext_irqs_polarity);
+
+    //clear the status of all active-low interrupts (has no affect on
+    //level sensitive interrupts)
+    out64(STD_LCL_EISR_OR, ~g_ext_irqs_polarity);
+
+    //unmask the interrupts that are to be enabled by default
+    out64(STD_LCL_EIMR_CLR, g_ext_irqs_enable);
+
+    //wait for the last operation to complete
+    sync();
+}