1*222f3e6fSPaolo Bonzini /*
2*222f3e6fSPaolo Bonzini * i386 TCG cpu class initialization functions specific to sysemu
3*222f3e6fSPaolo Bonzini *
4*222f3e6fSPaolo Bonzini * Copyright (c) 2003 Fabrice Bellard
5*222f3e6fSPaolo Bonzini *
6*222f3e6fSPaolo Bonzini * This library is free software; you can redistribute it and/or
7*222f3e6fSPaolo Bonzini * modify it under the terms of the GNU Lesser General Public
8*222f3e6fSPaolo Bonzini * License as published by the Free Software Foundation; either
9*222f3e6fSPaolo Bonzini * version 2 of the License, or (at your option) any later version.
10*222f3e6fSPaolo Bonzini *
11*222f3e6fSPaolo Bonzini * This library is distributed in the hope that it will be useful,
12*222f3e6fSPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of
13*222f3e6fSPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14*222f3e6fSPaolo Bonzini * Lesser General Public License for more details.
15*222f3e6fSPaolo Bonzini *
16*222f3e6fSPaolo Bonzini * You should have received a copy of the GNU Lesser General Public
17*222f3e6fSPaolo Bonzini * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18*222f3e6fSPaolo Bonzini */
19*222f3e6fSPaolo Bonzini
20*222f3e6fSPaolo Bonzini #include "qemu/osdep.h"
21*222f3e6fSPaolo Bonzini #include "cpu.h"
22*222f3e6fSPaolo Bonzini #include "tcg/helper-tcg.h"
23*222f3e6fSPaolo Bonzini
24*222f3e6fSPaolo Bonzini #include "sysemu/sysemu.h"
25*222f3e6fSPaolo Bonzini #include "qemu/units.h"
26*222f3e6fSPaolo Bonzini #include "exec/address-spaces.h"
27*222f3e6fSPaolo Bonzini
28*222f3e6fSPaolo Bonzini #include "tcg/tcg-cpu.h"
29*222f3e6fSPaolo Bonzini
tcg_cpu_machine_done(Notifier * n,void * unused)30*222f3e6fSPaolo Bonzini static void tcg_cpu_machine_done(Notifier *n, void *unused)
31*222f3e6fSPaolo Bonzini {
32*222f3e6fSPaolo Bonzini X86CPU *cpu = container_of(n, X86CPU, machine_done);
33*222f3e6fSPaolo Bonzini MemoryRegion *smram =
34*222f3e6fSPaolo Bonzini (MemoryRegion *) object_resolve_path("/machine/smram", NULL);
35*222f3e6fSPaolo Bonzini
36*222f3e6fSPaolo Bonzini if (smram) {
37*222f3e6fSPaolo Bonzini cpu->smram = g_new(MemoryRegion, 1);
38*222f3e6fSPaolo Bonzini memory_region_init_alias(cpu->smram, OBJECT(cpu), "smram",
39*222f3e6fSPaolo Bonzini smram, 0, 4 * GiB);
40*222f3e6fSPaolo Bonzini memory_region_set_enabled(cpu->smram, true);
41*222f3e6fSPaolo Bonzini memory_region_add_subregion_overlap(cpu->cpu_as_root, 0,
42*222f3e6fSPaolo Bonzini cpu->smram, 1);
43*222f3e6fSPaolo Bonzini }
44*222f3e6fSPaolo Bonzini }
45*222f3e6fSPaolo Bonzini
tcg_cpu_realizefn(CPUState * cs,Error ** errp)46*222f3e6fSPaolo Bonzini bool tcg_cpu_realizefn(CPUState *cs, Error **errp)
47*222f3e6fSPaolo Bonzini {
48*222f3e6fSPaolo Bonzini X86CPU *cpu = X86_CPU(cs);
49*222f3e6fSPaolo Bonzini
50*222f3e6fSPaolo Bonzini /*
51*222f3e6fSPaolo Bonzini * The realize order is important, since x86_cpu_realize() checks if
52*222f3e6fSPaolo Bonzini * nothing else has been set by the user (or by accelerators) in
53*222f3e6fSPaolo Bonzini * cpu->ucode_rev and cpu->phys_bits, and the memory regions
54*222f3e6fSPaolo Bonzini * initialized here are needed for the vcpu initialization.
55*222f3e6fSPaolo Bonzini *
56*222f3e6fSPaolo Bonzini * realize order:
57*222f3e6fSPaolo Bonzini * tcg_cpu -> host_cpu -> x86_cpu
58*222f3e6fSPaolo Bonzini */
59*222f3e6fSPaolo Bonzini cpu->cpu_as_mem = g_new(MemoryRegion, 1);
60*222f3e6fSPaolo Bonzini cpu->cpu_as_root = g_new(MemoryRegion, 1);
61*222f3e6fSPaolo Bonzini
62*222f3e6fSPaolo Bonzini /* Outer container... */
63*222f3e6fSPaolo Bonzini memory_region_init(cpu->cpu_as_root, OBJECT(cpu), "memory", ~0ull);
64*222f3e6fSPaolo Bonzini memory_region_set_enabled(cpu->cpu_as_root, true);
65*222f3e6fSPaolo Bonzini
66*222f3e6fSPaolo Bonzini /*
67*222f3e6fSPaolo Bonzini * ... with two regions inside: normal system memory with low
68*222f3e6fSPaolo Bonzini * priority, and...
69*222f3e6fSPaolo Bonzini */
70*222f3e6fSPaolo Bonzini memory_region_init_alias(cpu->cpu_as_mem, OBJECT(cpu), "memory",
71*222f3e6fSPaolo Bonzini get_system_memory(), 0, ~0ull);
72*222f3e6fSPaolo Bonzini memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->cpu_as_mem, 0);
73*222f3e6fSPaolo Bonzini memory_region_set_enabled(cpu->cpu_as_mem, true);
74*222f3e6fSPaolo Bonzini
75*222f3e6fSPaolo Bonzini cs->num_ases = 2;
76*222f3e6fSPaolo Bonzini cpu_address_space_init(cs, 0, "cpu-memory", cs->memory);
77*222f3e6fSPaolo Bonzini cpu_address_space_init(cs, 1, "cpu-smm", cpu->cpu_as_root);
78*222f3e6fSPaolo Bonzini
79*222f3e6fSPaolo Bonzini /* ... SMRAM with higher priority, linked from /machine/smram. */
80*222f3e6fSPaolo Bonzini cpu->machine_done.notify = tcg_cpu_machine_done;
81*222f3e6fSPaolo Bonzini qemu_add_machine_init_done_notifier(&cpu->machine_done);
82*222f3e6fSPaolo Bonzini return true;
83*222f3e6fSPaolo Bonzini }
84