From e0ad1fa7c82e0a31ec628dd43cbd915550b04f3d Mon Sep 17 00:00:00 2001 From: Michael Niewöhner Date: Mon, 28 Oct 2019 18:55:14 +0100 Subject: soc/intel/common: move common memmap functionality from skl,icl,cnl,apl MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This moves common memmap functionality from skl,icl,cnl,apl to the common tree. Change-Id: I45ddfabeac806ad5ff62da97ec1409c6bb9e89ac Signed-off-by: Michael Niewöhner Reviewed-on: https://review.coreboot.org/c/coreboot/+/36410 Reviewed-by: Aaron Durbin Reviewed-by: Arthur Heymans Tested-by: build bot (Jenkins) --- .../intel/common/block/systemagent/Makefile.inc | 3 ++ src/soc/intel/common/block/systemagent/memmap.c | 48 ++++++++++++++++++++++ 2 files changed, 51 insertions(+) create mode 100644 src/soc/intel/common/block/systemagent/memmap.c (limited to 'src/soc/intel/common/block/systemagent') diff --git a/src/soc/intel/common/block/systemagent/Makefile.inc b/src/soc/intel/common/block/systemagent/Makefile.inc index 0c29636a94..7e49ec7291 100644 --- a/src/soc/intel/common/block/systemagent/Makefile.inc +++ b/src/soc/intel/common/block/systemagent/Makefile.inc @@ -3,3 +3,6 @@ romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += systemagent_early.c ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += systemagent_early.c postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += systemagent_early.c ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += systemagent.c +romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c +ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c +postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c diff --git a/src/soc/intel/common/block/systemagent/memmap.c b/src/soc/intel/common/block/systemagent/memmap.c new file mode 100644 index 0000000000..ea22aa6d18 --- /dev/null +++ b/src/soc/intel/common/block/systemagent/memmap.c @@ -0,0 +1,48 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * Copyright (C) 2015-2017 Intel Corporation. + * + * 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. + */ + +#include +#include +#include +#include +#include +#include +#include + +void smm_region(uintptr_t *start, size_t *size) +{ + *start = sa_get_tseg_base(); + *size = sa_get_tseg_size(); +} + +void fill_postcar_frame(struct postcar_frame *pcf) +{ + uintptr_t top_of_ram; + + /* + * We need to make sure ramstage will be run cached. At this + * point exact location of ramstage in cbmem is not known. + * Instruct postcar to cache 16 megs under cbmem top which is + * a safe bet to cover ramstage. + */ + top_of_ram = (uintptr_t) cbmem_top(); + printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram); + top_of_ram -= 16*MiB; + postcar_frame_add_mtrr(pcf, top_of_ram, 16*MiB, MTRR_TYPE_WRBACK); + + /* Cache the TSEG region */ + postcar_enable_tseg_cache(pcf); +} -- cgit v1.2.3