84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
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/*
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* i386 TCG cpu class initialization functions specific to sysemu
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "tcg/helper-tcg.h"
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#include "sysemu/sysemu.h"
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#include "qemu/units.h"
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#include "exec/address-spaces.h"
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#include "tcg/tcg-cpu.h"
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static void tcg_cpu_machine_done(Notifier *n, void *unused)
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{
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X86CPU *cpu = container_of(n, X86CPU, machine_done);
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MemoryRegion *smram =
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(MemoryRegion *) object_resolve_path("/machine/smram", NULL);
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if (smram) {
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cpu->smram = g_new(MemoryRegion, 1);
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memory_region_init_alias(cpu->smram, OBJECT(cpu), "smram",
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smram, 0, 4 * GiB);
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memory_region_set_enabled(cpu->smram, true);
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memory_region_add_subregion_overlap(cpu->cpu_as_root, 0,
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cpu->smram, 1);
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}
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}
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bool tcg_cpu_realizefn(CPUState *cs, Error **errp)
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{
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X86CPU *cpu = X86_CPU(cs);
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/*
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* The realize order is important, since x86_cpu_realize() checks if
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* nothing else has been set by the user (or by accelerators) in
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* cpu->ucode_rev and cpu->phys_bits, and the memory regions
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* initialized here are needed for the vcpu initialization.
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*
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* realize order:
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* tcg_cpu -> host_cpu -> x86_cpu
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*/
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cpu->cpu_as_mem = g_new(MemoryRegion, 1);
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cpu->cpu_as_root = g_new(MemoryRegion, 1);
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/* Outer container... */
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memory_region_init(cpu->cpu_as_root, OBJECT(cpu), "memory", ~0ull);
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memory_region_set_enabled(cpu->cpu_as_root, true);
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/*
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* ... with two regions inside: normal system memory with low
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* priority, and...
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*/
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memory_region_init_alias(cpu->cpu_as_mem, OBJECT(cpu), "memory",
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get_system_memory(), 0, ~0ull);
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memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->cpu_as_mem, 0);
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memory_region_set_enabled(cpu->cpu_as_mem, true);
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cs->num_ases = 2;
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cpu_address_space_init(cs, 0, "cpu-memory", cs->memory);
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cpu_address_space_init(cs, 1, "cpu-smm", cpu->cpu_as_root);
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/* ... SMRAM with higher priority, linked from /machine/smram. */
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cpu->machine_done.notify = tcg_cpu_machine_done;
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qemu_add_machine_init_done_notifier(&cpu->machine_done);
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return true;
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}
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