[Skiboot] [PATCH V2] platforms/zz: Initialize PRD in skiboot

[Ananth N Mavinakayanahalli]

... since PRD runs in host userspace for FSP based P9 systems.

Signed-off-by: Ananth N Mavinakayanahalli <ananth at linux.vnet.ibm.com>
---
 hw/prd.c               |   16 +++++++++-------
 platforms/ibm-fsp/zz.c |    3 +++
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/hw/prd.c b/hw/prd.c
index a44faa9..d63c03f 100644
--- a/hw/prd.c
+++ b/hw/prd.c
@@ -361,13 +361,15 @@ void prd_init(void)
 	}
 	unlock(&ipoll_lock);
 
-	if (fsp_present()) {
-		/* todo: FSP implementation */
-		queue_prd_msg = queue_prd_msg_nop;
-	} else {
-		queue_prd_msg = queue_prd_msg_hbrt;
-		opal_register(OPAL_PRD_MSG, opal_prd_msg, 1);
-	}
+	/*
+	 * P9 FSP based systems work similar to the OpenPOWER
+	 * ones in that the PRD runs in host userspace. On such
+	 * systems, prd_init() gets called from the platform
+	 * probe callback and the setup for them is similar
+	 * to the OpenPOWER systems.
+	 */
+	queue_prd_msg = queue_prd_msg_hbrt;
+	opal_register(OPAL_PRD_MSG, opal_prd_msg, 1);
 
 	prd_node = dt_new(opal_node, "diagnostics");
 	dt_add_property_strings(prd_node, "compatible", "ibm,opal-prd");
diff --git a/platforms/ibm-fsp/zz.c b/platforms/ibm-fsp/zz.c
index 89d87b4..4d50799 100644
--- a/platforms/ibm-fsp/zz.c
+++ b/platforms/ibm-fsp/zz.c
@@ -29,6 +29,9 @@
 
 static bool zz_probe(void)
 {
+	/* PRD runs in host userspace on P9 FSP platforms */
+	prd_init();
+
 	/* FIXME: make this neater when the dust settles */
 	if (dt_node_is_compatible(dt_root, "ibm,zz-1s2u") ||
 	    dt_node_is_compatible(dt_root, "ibm,zz-1s4u") ||