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qemu: add x86 cpu 

This patch adds a qemu x86 cpu chip.  It has no initialization function
as this isn't needed on virtual hardware.  A virtual machine can have
pretty much any CPU: qemu emulates a wide range of x86 CPUs (try 'qemu
-cpu ? for a list), also with 'qemu -cpu host' the guest will see a cpu
which is (almost) identical to the one on the host machine.  So I've
added X86_VENDOR_ANY as wildcard match for the cpu_table.

Change-Id: Ib01210694b09702e41ed806f31d0033e840a863f
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-on: http://review.coreboot.org/3344
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Gerd Hoffmann 2013-05-31 09:23:26 +02:00 committed by Stefan Reinauer
parent a53266bee0
commit cbf30736b6
7 changed files with 84 additions and 0 deletions
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1
src/arch/x86/include/arch/cpu.h
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@ -138,6 +138,7 @@ static inline unsigned int cpuid_edx(unsigned int op)
#define X86_VENDOR_TRANSMETA 8
#define X86_VENDOR_NSC 9
#define X86_VENDOR_SIS 10
#define X86_VENDOR_ANY 0xfe
#define X86_VENDOR_UNKNOWN 0xff
#if !defined(__PRE_RAM__) && !defined(__SMM__)

2
src/arch/x86/lib/cpu.c
View File

@ -223,6 +223,8 @@ struct cpu_driver *find_cpu_driver(struct device *cpu)
{
return driver;
}
if (X86_VENDOR_ANY == id->vendor)
return driver;
}
}
return NULL;

1
src/cpu/Kconfig
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@ -14,6 +14,7 @@ if ARCH_X86
source src/cpu/amd/Kconfig
source src/cpu/intel/Kconfig
source src/cpu/via/Kconfig
source src/cpu/qemu-x86/Kconfig
source src/cpu/x86/Kconfig
config CACHE_AS_RAM

1
src/cpu/Makefile.inc
View File

@ -8,6 +8,7 @@ subdirs-y += samsung
subdirs-y += ti
subdirs-y += via
subdirs-y += x86
subdirs-$(CONFIG_CPU_QEMU_X86) += qemu-x86
################################################################################
## Rules for building the microcode blob in CBFS

21
src/cpu/qemu-x86/Kconfig Normal file
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@ -0,0 +1,21 @@
##
## This file is part of the coreboot project.
##
## Copyright (C) 2013 Gerd Hoffmann <kraxel@redhat.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
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
config CPU_QEMU_X86
bool

21
src/cpu/qemu-x86/Makefile.inc Normal file
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@ -0,0 +1,21 @@
##
## This file is part of the coreboot project.
##
## 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; either version 2 of the License, or
## (at your option) any later version.
##
## 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
##
ramstage-y += qemu.c
subdirs-y += ../x86/mtrr
subdirs-y += ../x86/lapic

37
src/cpu/qemu-x86/qemu.c Normal file
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@ -0,0 +1,37 @@
/*
* This file is part of the coreboot project.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <cpu/cpu.h>
#include <device/device.h>
static struct device_operations cpu_dev_ops = {
};
static struct cpu_device_id cpu_table[] = {
{ X86_VENDOR_ANY, 0 },
{ 0, 0 },
};
static const struct cpu_driver driver __cpu_driver = {
.ops = &cpu_dev_ops,
.id_table = cpu_table,
};
struct chip_operations cpu_x86_qemu_ops = {
CHIP_NAME("QEMU x86 CPU")
};