root / hw / dummy_m68k.c @ 136be99e
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1 | ca02f319 | pbrook | /*
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2 | ca02f319 | pbrook | * Dummy board with just RAM and CPU for use as an ISS.
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3 | ca02f319 | pbrook | *
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4 | ca02f319 | pbrook | * Copyright (c) 2007 CodeSourcery.
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5 | ca02f319 | pbrook | *
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6 | 8e31bf38 | Matthew Fernandez | * This code is licensed under the GPL
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7 | ca02f319 | pbrook | */
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8 | ca02f319 | pbrook | |
9 | 87ecb68b | pbrook | #include "hw.h" |
10 | 87ecb68b | pbrook | #include "boards.h" |
11 | ca20cf32 | Blue Swirl | #include "loader.h" |
12 | ca20cf32 | Blue Swirl | #include "elf.h" |
13 | cbdea0ca | Avi Kivity | #include "exec-memory.h" |
14 | ca02f319 | pbrook | |
15 | ca02f319 | pbrook | #define KERNEL_LOAD_ADDR 0x10000 |
16 | ca02f319 | pbrook | |
17 | ca02f319 | pbrook | /* Board init. */
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18 | ca02f319 | pbrook | |
19 | c227f099 | Anthony Liguori | static void dummy_m68k_init(ram_addr_t ram_size, |
20 | 3023f332 | aliguori | const char *boot_device, |
21 | ca02f319 | pbrook | const char *kernel_filename, const char *kernel_cmdline, |
22 | ca02f319 | pbrook | const char *initrd_filename, const char *cpu_model) |
23 | ca02f319 | pbrook | { |
24 | 7927df3a | Andreas Färber | CPUM68KState *env; |
25 | cbdea0ca | Avi Kivity | MemoryRegion *address_space_mem = get_system_memory(); |
26 | cbdea0ca | Avi Kivity | MemoryRegion *ram = g_new(MemoryRegion, 1);
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27 | ca02f319 | pbrook | int kernel_size;
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28 | ca02f319 | pbrook | uint64_t elf_entry; |
29 | c227f099 | Anthony Liguori | target_phys_addr_t entry; |
30 | ca02f319 | pbrook | |
31 | ca02f319 | pbrook | if (!cpu_model)
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32 | ca02f319 | pbrook | cpu_model = "cfv4e";
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33 | cd08ce8f | pbrook | env = cpu_init(cpu_model); |
34 | cd08ce8f | pbrook | if (!env) {
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35 | cd08ce8f | pbrook | fprintf(stderr, "Unable to find m68k CPU definition\n");
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36 | cd08ce8f | pbrook | exit(1);
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37 | ca02f319 | pbrook | } |
38 | ca02f319 | pbrook | |
39 | ca02f319 | pbrook | /* Initialize CPU registers. */
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40 | ca02f319 | pbrook | env->vbr = 0;
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41 | ca02f319 | pbrook | |
42 | ca02f319 | pbrook | /* RAM at address zero */
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43 | c5705a77 | Avi Kivity | memory_region_init_ram(ram, "dummy_m68k.ram", ram_size);
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44 | c5705a77 | Avi Kivity | vmstate_register_ram_global(ram); |
45 | cbdea0ca | Avi Kivity | memory_region_add_subregion(address_space_mem, 0, ram);
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46 | ca02f319 | pbrook | |
47 | ca02f319 | pbrook | /* Load kernel. */
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48 | ca02f319 | pbrook | if (kernel_filename) {
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49 | 409dbce5 | Aurelien Jarno | kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, |
50 | 409dbce5 | Aurelien Jarno | NULL, NULL, 1, ELF_MACHINE, 0); |
51 | ca02f319 | pbrook | entry = elf_entry; |
52 | ca02f319 | pbrook | if (kernel_size < 0) { |
53 | 5a9154e0 | aliguori | kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL); |
54 | ca02f319 | pbrook | } |
55 | ca02f319 | pbrook | if (kernel_size < 0) { |
56 | dcac9679 | pbrook | kernel_size = load_image_targphys(kernel_filename, |
57 | dcac9679 | pbrook | KERNEL_LOAD_ADDR, |
58 | dcac9679 | pbrook | ram_size - KERNEL_LOAD_ADDR); |
59 | ca02f319 | pbrook | entry = KERNEL_LOAD_ADDR; |
60 | ca02f319 | pbrook | } |
61 | ca02f319 | pbrook | if (kernel_size < 0) { |
62 | ca02f319 | pbrook | fprintf(stderr, "qemu: could not load kernel '%s'\n",
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63 | ca02f319 | pbrook | kernel_filename); |
64 | ca02f319 | pbrook | exit(1);
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65 | ca02f319 | pbrook | } |
66 | ca02f319 | pbrook | } else {
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67 | ca02f319 | pbrook | entry = 0;
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68 | ca02f319 | pbrook | } |
69 | ca02f319 | pbrook | env->pc = entry; |
70 | ca02f319 | pbrook | } |
71 | ca02f319 | pbrook | |
72 | f80f9ec9 | Anthony Liguori | static QEMUMachine dummy_m68k_machine = {
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73 | 4b32e168 | aliguori | .name = "dummy",
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74 | 4b32e168 | aliguori | .desc = "Dummy board",
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75 | 4b32e168 | aliguori | .init = dummy_m68k_init, |
76 | ca02f319 | pbrook | }; |
77 | f80f9ec9 | Anthony Liguori | |
78 | f80f9ec9 | Anthony Liguori | static void dummy_m68k_machine_init(void) |
79 | f80f9ec9 | Anthony Liguori | { |
80 | f80f9ec9 | Anthony Liguori | qemu_register_machine(&dummy_m68k_machine); |
81 | f80f9ec9 | Anthony Liguori | } |
82 | f80f9ec9 | Anthony Liguori | |
83 | f80f9ec9 | Anthony Liguori | machine_init(dummy_m68k_machine_init); |