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47d05a86 MF |
1 | /* |
2 | * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. | |
3 | * All rights reserved. | |
4 | * | |
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. | |
15 | * | |
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. | |
26 | */ | |
27 | ||
28 | #include "sysemu.h" | |
29 | #include "boards.h" | |
30 | #include "loader.h" | |
31 | #include "elf.h" | |
32 | #include "memory.h" | |
33 | #include "exec-memory.h" | |
34 | ||
35 | static uint64_t translate_phys_addr(void *env, uint64_t addr) | |
36 | { | |
37 | return cpu_get_phys_page_debug(env, addr); | |
38 | } | |
39 | ||
5e408573 | 40 | static void sim_reset(void *env) |
47d05a86 | 41 | { |
1bba0dc9 | 42 | cpu_state_reset(env); |
47d05a86 MF |
43 | } |
44 | ||
5e408573 | 45 | static void sim_init(ram_addr_t ram_size, |
47d05a86 MF |
46 | const char *boot_device, |
47 | const char *kernel_filename, const char *kernel_cmdline, | |
48 | const char *initrd_filename, const char *cpu_model) | |
49 | { | |
06d26274 | 50 | XtensaCPU *cpu = NULL; |
5bfcb36e | 51 | CPUXtensaState *env = NULL; |
47d05a86 MF |
52 | MemoryRegion *ram, *rom; |
53 | int n; | |
54 | ||
55 | for (n = 0; n < smp_cpus; n++) { | |
06d26274 AF |
56 | cpu = cpu_xtensa_init(cpu_model); |
57 | if (cpu == NULL) { | |
47d05a86 MF |
58 | fprintf(stderr, "Unable to find CPU definition\n"); |
59 | exit(1); | |
60 | } | |
06d26274 AF |
61 | env = &cpu->env; |
62 | ||
47d05a86 | 63 | env->sregs[PRID] = n; |
5e408573 | 64 | qemu_register_reset(sim_reset, env); |
47d05a86 MF |
65 | /* Need MMU initialized prior to ELF loading, |
66 | * so that ELF gets loaded into virtual addresses | |
67 | */ | |
5e408573 | 68 | sim_reset(env); |
47d05a86 MF |
69 | } |
70 | ||
71 | ram = g_malloc(sizeof(*ram)); | |
c5705a77 AK |
72 | memory_region_init_ram(ram, "xtensa.sram", ram_size); |
73 | vmstate_register_ram_global(ram); | |
47d05a86 MF |
74 | memory_region_add_subregion(get_system_memory(), 0, ram); |
75 | ||
76 | rom = g_malloc(sizeof(*rom)); | |
c5705a77 AK |
77 | memory_region_init_ram(rom, "xtensa.rom", 0x1000); |
78 | vmstate_register_ram_global(rom); | |
47d05a86 MF |
79 | memory_region_add_subregion(get_system_memory(), 0xfe000000, rom); |
80 | ||
81 | if (kernel_filename) { | |
82 | uint64_t elf_entry; | |
83 | uint64_t elf_lowaddr; | |
84 | #ifdef TARGET_WORDS_BIGENDIAN | |
85 | int success = load_elf(kernel_filename, translate_phys_addr, env, | |
86 | &elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0); | |
87 | #else | |
88 | int success = load_elf(kernel_filename, translate_phys_addr, env, | |
89 | &elf_entry, &elf_lowaddr, NULL, 0, ELF_MACHINE, 0); | |
90 | #endif | |
91 | if (success > 0) { | |
92 | env->pc = elf_entry; | |
93 | } | |
94 | } | |
95 | } | |
96 | ||
5e408573 | 97 | static void xtensa_sim_init(ram_addr_t ram_size, |
47d05a86 MF |
98 | const char *boot_device, |
99 | const char *kernel_filename, const char *kernel_cmdline, | |
100 | const char *initrd_filename, const char *cpu_model) | |
101 | { | |
102 | if (!cpu_model) { | |
103 | cpu_model = "dc232b"; | |
104 | } | |
5e408573 | 105 | sim_init(ram_size, boot_device, kernel_filename, kernel_cmdline, |
47d05a86 MF |
106 | initrd_filename, cpu_model); |
107 | } | |
108 | ||
5e408573 MF |
109 | static QEMUMachine xtensa_sim_machine = { |
110 | .name = "sim", | |
111 | .desc = "sim machine (dc232b)", | |
112 | .init = xtensa_sim_init, | |
47d05a86 MF |
113 | .max_cpus = 4, |
114 | }; | |
115 | ||
5e408573 | 116 | static void xtensa_sim_machine_init(void) |
47d05a86 | 117 | { |
5e408573 | 118 | qemu_register_machine(&xtensa_sim_machine); |
47d05a86 MF |
119 | } |
120 | ||
5e408573 | 121 | machine_init(xtensa_sim_machine_init); |