From cb08e169cf959333206ef69d8aa82808ef797eb7 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Tue, 15 Oct 2013 17:19:41 +0300 Subject: CBMEM intel: Define get_top_of_ram() once per chipset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Only have one definition of get_top_of_ram() function and compile it using __SIMPLE_DEVICE__ for both romstage and ramstage. Implemented like this on intel/northbridge/gm45 already. This also adds get_top_of_ram() to i945 ramstage. Change-Id: Ia82cf6e47a4c929223ea3d8f233d606e6f5bf2f1 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/3993 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/northbridge/intel/sandybridge/ram_calc.c | 31 ++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/northbridge/intel/sandybridge/ram_calc.c (limited to 'src/northbridge/intel/sandybridge/ram_calc.c') diff --git a/src/northbridge/intel/sandybridge/ram_calc.c b/src/northbridge/intel/sandybridge/ram_calc.c new file mode 100644 index 0000000000..3693a07355 --- /dev/null +++ b/src/northbridge/intel/sandybridge/ram_calc.c @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Google Inc. + * + * 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 + */ + +#define __SIMPLE_DEVICE__ + +#include +#include +#include "sandybridge.h" + +unsigned long get_top_of_ram(void) +{ + /* Base of TSEG is top of usable DRAM */ + u32 tom = pci_read_config32(PCI_DEV(0,0,0), TSEG); + return (unsigned long) tom; +} -- cgit v1.2.3