From f1e3c763b3eef15dbfae73f485408a0dec230d00 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Mon, 22 Dec 2014 12:28:07 +0200 Subject: CBMEM: Do not use get_top_of_ram() with DYNAMIC_CBMEM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The name was always obscure and confusing. Instead define cbmem_top() directly in the chipset code for x86 like on ARMs. TODO: Check TSEG alignment, it used for MTRR programming. Change-Id: Ibbe5f05ab9c7d87d09caa673766cd17d192cd045 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/7888 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/northbridge/intel/fsp_sandybridge/Makefile.inc | 2 ++ .../intel/fsp_sandybridge/northbridge.c | 10 ------ src/northbridge/intel/fsp_sandybridge/ram_calc.c | 38 ++++++++++++++++++++++ src/northbridge/intel/fsp_sandybridge/raminit.c | 8 ----- 4 files changed, 40 insertions(+), 18 deletions(-) create mode 100644 src/northbridge/intel/fsp_sandybridge/ram_calc.c (limited to 'src/northbridge/intel/fsp_sandybridge') diff --git a/src/northbridge/intel/fsp_sandybridge/Makefile.inc b/src/northbridge/intel/fsp_sandybridge/Makefile.inc index 080a7f4946..ca6f345daf 100644 --- a/src/northbridge/intel/fsp_sandybridge/Makefile.inc +++ b/src/northbridge/intel/fsp_sandybridge/Makefile.inc @@ -20,11 +20,13 @@ subdirs-y += fsp ramstage-y += northbridge.c +ramstage-y += ram_calc.c ramstage-y += gma.c ramstage-y += acpi.c romstage-y += raminit.c +romstage-y += ram_calc.c romstage-y += early_init.c romstage-y += report_platform.c romstage-y += ../../../arch/x86/lib/walkcbfs.S diff --git a/src/northbridge/intel/fsp_sandybridge/northbridge.c b/src/northbridge/intel/fsp_sandybridge/northbridge.c index adc69bcd89..fac635df10 100644 --- a/src/northbridge/intel/fsp_sandybridge/northbridge.c +++ b/src/northbridge/intel/fsp_sandybridge/northbridge.c @@ -245,16 +245,6 @@ static void pci_domain_set_resources(device_t dev) assign_resources(dev->link_list); } -unsigned long get_top_of_ram(void) -{ - struct device *dev = dev_find_slot(0, PCI_DEVFN(0, 0)); - - /* Base of TSEG is top of usable DRAM */ - u32 tom = pci_read_config32(dev, TSEG) & ~(1UL << 0); - tom -= 0x200000; /* 2MB for FSP HOB */ - return (unsigned long) tom; -} - /* TODO We could determine how many PCIe busses we need in * the bar. For now that number is hardcoded to a max of 64. * See e7525/northbridge.c for an example. diff --git a/src/northbridge/intel/fsp_sandybridge/ram_calc.c b/src/northbridge/intel/fsp_sandybridge/ram_calc.c new file mode 100644 index 0000000000..43a11051f4 --- /dev/null +++ b/src/northbridge/intel/fsp_sandybridge/ram_calc.c @@ -0,0 +1,38 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Google Inc. + * Copyright (C) 2013 Sage Electronic Engineering, LLC. + * + * 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 +#include "northbridge.h" + +static uintptr_t smm_region_start(void) +{ + /* Base of TSEG is top of usable DRAM */ + uintptr_t tom = pci_read_config32(PCI_DEV(0,0,0), TSEG) & ~(1UL << 0); + return tom; +} + +void *cbmem_top(void) +{ + return (void *) (smm_region_start() - FSP_RESERVE_MEMORY_SIZE); +} diff --git a/src/northbridge/intel/fsp_sandybridge/raminit.c b/src/northbridge/intel/fsp_sandybridge/raminit.c index 19b48ca29b..868927430c 100644 --- a/src/northbridge/intel/fsp_sandybridge/raminit.c +++ b/src/northbridge/intel/fsp_sandybridge/raminit.c @@ -74,11 +74,3 @@ void report_memory_config(void) ((ch_conf >> 16) & 1) ? ", selected" : ""); } } - -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) & ~(1UL << 0); - tom -= 0x200000; /* 2MB for FSP HOB */ - return (unsigned long) tom; -} -- cgit v1.2.3