timestamps intel: Move timestamp scratchpad to chipset

This retrieves back the value stored with store_initial_timestamp()
in the bootblock for southbridge.

Change-Id: I377c823706c33ed65af023d20d2e4323edd31199
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3908
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Aaron Durbin <adurbin@google.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/src/southbridge/intel/bd82x6x/early_pch.c b/src/southbridge/intel/bd82x6x/early_pch.c
new file mode 100644
index 0000000000..9f80d41aa4
--- /dev/null
+++ b/src/southbridge/intel/bd82x6x/early_pch.c
@@ -0,0 +1,33 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *
+ * 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 <arch/io.h>
+#include <timestamp.h>
+
+#if CONFIG_COLLECT_TIMESTAMPS
+tsc_t get_initial_timestamp(void)
+{
+	tsc_t base_time = {
+		.lo = pci_read_config32(PCI_DEV(0, 0x00, 0), 0xdc),
+		.hi = pci_read_config32(PCI_DEV(0, 0x1f, 2), 0xd0)
+	};
+	return base_time;
+}
+#endif