AGESA fam12 fam14 fam15: Common handler for AGESA_DO_RESET

This is x86 "standard" 0xcf9 reset mechanism.

Change-Id: Ieb48290b21a7cb1425881fdd65c794e96da0248f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5680
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/northbridge/amd/agesa/def_callouts.c b/src/northbridge/amd/agesa/def_callouts.c
index 228ac3f5cb..f0baca5349 100644
--- a/src/northbridge/amd/agesa/def_callouts.c
+++ b/src/northbridge/amd/agesa/def_callouts.c
@@ -18,6 +18,7 @@
  */
 
 #include "AGESA.h"
+#include "amdlib.h"
 #include "Ids.h"
 #include "def_callouts.h"
 
@@ -38,3 +39,39 @@ AGESA_STATUS agesa_EmptyIdsInitData (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
 		IdsPtr[0].IdsNvValue = IdsPtr[0].IdsNvId = 0xffff;
 	return AGESA_SUCCESS;
 }
+
+AGESA_STATUS agesa_Reset (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
+{
+	AGESA_STATUS        Status;
+	UINT8                 Value;
+	UINTN               ResetType;
+	AMD_CONFIG_PARAMS   *StdHeader;
+
+	ResetType = Data;
+	StdHeader = ConfigPtr;
+
+	//
+	// Perform the RESET based upon the ResetType. In case of
+	// WARM_RESET_WHENVER and COLD_RESET_WHENEVER, the request will go to
+	// AmdResetManager. During the critical condition, where reset is required
+	// immediately, the reset will be invoked directly by writing 0x04 to port
+	// 0xCF9 (Reset Port).
+	//
+	switch (ResetType) {
+	case WARM_RESET_WHENEVER:
+	case COLD_RESET_WHENEVER:
+		break;
+
+	case WARM_RESET_IMMEDIATELY:
+	case COLD_RESET_IMMEDIATELY:
+		Value = 0x06;
+		LibAmdIoWrite (AccessWidth8, 0xCf9, &Value, StdHeader);
+		break;
+
+	default:
+		break;
+	}
+
+	Status = 0;
+	return Status;
+}