northbridge/amd/agesa/family15rl: Provide Richland support

Provide our current development support for Richland. We
would however like to see a unification of 'northbridge/amd/agesa'
instead of another copy-paste merged.

Change-Id: I88005939844d1132cfd3531a9d47389320026814
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/7536
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/src/northbridge/amd/agesa/family15rl/dimmSpd.c b/src/northbridge/amd/agesa/family15rl/dimmSpd.c
new file mode 100644
index 0000000000..b8d7026a00
--- /dev/null
+++ b/src/northbridge/amd/agesa/family15rl/dimmSpd.c
@@ -0,0 +1,66 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ * Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <device/pci_def.h>
+#include <device/device.h>
+#include <stdlib.h>
+
+/* warning: Porting.h includes an open #pragma pack(1) */
+#include "Porting.h"
+#include "AGESA.h"
+#include "amdlib.h"
+#include "chip.h"
+
+#include <northbridge/amd/agesa/dimmSpd.h>
+
+/**
+ * Gets the SMBus address for an SPD from the array in devicetree.cb
+ * then read the SPD into the supplied buffer.
+ */
+AGESA_STATUS AmdMemoryReadSPD (UINT32 unused1, UINT32 unused2, AGESA_READ_SPD_PARAMS *info)
+{
+	UINT8 spdAddress;
+
+	ROMSTAGE_CONST struct device *dev = dev_find_slot(0, PCI_DEVFN(0x18, 2));
+	if (dev == NULL)
+		return AGESA_ERROR;
+
+	ROMSTAGE_CONST struct northbridge_amd_agesa_family15rl_config *config = dev->chip_info;
+	if (config == NULL)
+		return AGESA_ERROR;
+
+	if (info->SocketId >= ARRAY_SIZE(config->spdAddrLookup))
+		return AGESA_ERROR;
+	if (info->MemChannelId >= ARRAY_SIZE(config->spdAddrLookup[0]))
+		return AGESA_ERROR;
+	if (info->DimmId >= ARRAY_SIZE(config->spdAddrLookup[0][0]))
+		return AGESA_ERROR;
+
+	spdAddress = config->spdAddrLookup
+		[info->SocketId][info->MemChannelId][info->DimmId];
+
+	if (spdAddress == 0)
+		return AGESA_ERROR;
+
+	int err = hudson_readSpd(spdAddress, (void *) info->Buffer, 128);
+	if (err)
+		return AGESA_ERROR;
+	return AGESA_SUCCESS;
+}