2 * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the Open Source and Linux Lab nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "qemu/osdep.h"
29 #include "qapi/error.h"
30 #include "qemu-common.h"
32 #include "sysemu/sysemu.h"
33 #include "hw/boards.h"
34 #include "hw/loader.h"
36 #include "exec/memory.h"
37 #include "exec/address-spaces.h"
38 #include "qemu/error-report.h"
40 static void xtensa_create_memory_regions(const XtensaMemory
*memory
,
44 GString
*num_name
= g_string_new(NULL
);
46 for (i
= 0; i
< memory
->num
; ++i
) {
49 g_string_printf(num_name
, "%s%u", name
, i
);
50 m
= g_new(MemoryRegion
, 1);
51 memory_region_init_ram(m
, NULL
, num_name
->str
,
52 memory
->location
[i
].size
,
54 vmstate_register_ram_global(m
);
55 memory_region_add_subregion(get_system_memory(),
56 memory
->location
[i
].addr
, m
);
58 g_string_free(num_name
, true);
61 static uint64_t translate_phys_addr(void *opaque
, uint64_t addr
)
63 XtensaCPU
*cpu
= opaque
;
65 return cpu_get_phys_page_debug(CPU(cpu
), addr
);
68 static void sim_reset(void *opaque
)
70 XtensaCPU
*cpu
= opaque
;
75 static void xtensa_sim_init(MachineState
*machine
)
77 XtensaCPU
*cpu
= NULL
;
78 CPUXtensaState
*env
= NULL
;
79 ram_addr_t ram_size
= machine
->ram_size
;
80 const char *cpu_model
= machine
->cpu_model
;
81 const char *kernel_filename
= machine
->kernel_filename
;
85 cpu_model
= XTENSA_DEFAULT_CPU_MODEL
;
88 for (n
= 0; n
< smp_cpus
; n
++) {
89 cpu
= cpu_xtensa_init(cpu_model
);
91 error_report("unable to find CPU definition '%s'",
98 qemu_register_reset(sim_reset
, cpu
);
99 /* Need MMU initialized prior to ELF loading,
100 * so that ELF gets loaded into virtual addresses
106 XtensaMemory sysram
= env
->config
->sysram
;
108 sysram
.location
[0].size
= ram_size
;
109 xtensa_create_memory_regions(&env
->config
->instrom
, "xtensa.instrom");
110 xtensa_create_memory_regions(&env
->config
->instram
, "xtensa.instram");
111 xtensa_create_memory_regions(&env
->config
->datarom
, "xtensa.datarom");
112 xtensa_create_memory_regions(&env
->config
->dataram
, "xtensa.dataram");
113 xtensa_create_memory_regions(&env
->config
->sysrom
, "xtensa.sysrom");
114 xtensa_create_memory_regions(&sysram
, "xtensa.sysram");
117 if (kernel_filename
) {
119 uint64_t elf_lowaddr
;
120 #ifdef TARGET_WORDS_BIGENDIAN
121 int success
= load_elf(kernel_filename
, translate_phys_addr
, cpu
,
122 &elf_entry
, &elf_lowaddr
, NULL
, 1, EM_XTENSA
, 0, 0);
124 int success
= load_elf(kernel_filename
, translate_phys_addr
, cpu
,
125 &elf_entry
, &elf_lowaddr
, NULL
, 0, EM_XTENSA
, 0, 0);
133 static void xtensa_sim_machine_init(MachineClass
*mc
)
135 mc
->desc
= "sim machine (" XTENSA_DEFAULT_CPU_MODEL
")";
136 mc
->is_default
= true;
137 mc
->init
= xtensa_sim_init
;
141 DEFINE_MACHINE("sim", xtensa_sim_machine_init
)