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coreboot-kgpe-d16/src/device/cpu_device.c

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AMD northbridges: factor out CPU allocation Factor CPU allocation out of AMD northbridge codes. As CPU topology information is required for generation of certain ACPI tables, make this code globally available. For AMDK8 and AMDFAM10 northbridge, there is a possible case of BSP CPU with lapicid!=0. We do not want to leave the lapic 0 from devicetree unused, so always use that node for BSP CPU. Change-Id: I8b1e73ed5b20b314f71dfd69a7b781ac05aea120 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1418 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2012-08-07 16:12:11 +02:00
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Advanced Micro Devices, Inc.
* Copyright (C) 2012 Kyösti Mälkki <kyosti.malkki@gmail.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
GPLv2 notice: Unify all files to just use one space in »MA 02110-1301« In the file `COPYING` in the coreboot repository and upstream [1] just one space is used. The following command was used to convert all files. $ git grep -l 'MA 02' | xargs sed -i 's/MA 02/MA 02/' [1] http://www.gnu.org/licenses/gpl-2.0.txt Change-Id: Ic956dab2820a9e2ccb7841cab66966ba168f305f Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2490 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2013-02-23 18:37:27 +01:00
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
AMD northbridges: factor out CPU allocation Factor CPU allocation out of AMD northbridge codes. As CPU topology information is required for generation of certain ACPI tables, make this code globally available. For AMDK8 and AMDFAM10 northbridge, there is a possible case of BSP CPU with lapicid!=0. We do not want to leave the lapic 0 from devicetree unused, so always use that node for BSP CPU. Change-Id: I8b1e73ed5b20b314f71dfd69a7b781ac05aea120 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1418 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2012-08-07 16:12:11 +02:00
*/
#include <device/device.h>
#include <console/console.h>
#include <cpu/x86/lapic.h>
void remap_bsp_lapic(struct bus *cpu_bus)
{
struct device_path cpu_path;
device_t cpu;
u32 bsp_lapic_id = lapicid();
if (bsp_lapic_id) {
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = 0;
cpu = find_dev_path(cpu_bus, &cpu_path);
if (cpu)
cpu->path.apic.apic_id = bsp_lapic_id;
}
}
device_t add_cpu_device(struct bus *cpu_bus, unsigned apic_id, int enabled)
{
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = apic_id;
/* Update CPU in devicetree. */
if (enabled)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
if (!cpu)
return NULL;
cpu->enabled = enabled;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
return cpu;
}
void set_cpu_topology(device_t cpu, unsigned node, unsigned package, unsigned core, unsigned thread)
{
cpu->path.apic.node_id = node;
cpu->path.apic.package_id = package;
cpu->path.apic.core_id = core;
cpu->path.apic.thread_id = thread;
}