root / hw / dummy_m68k.c @ 7cef3f4f
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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 | ca02f319 | pbrook | * This code is licenced 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 | ca02f319 | pbrook | |
14 | ca02f319 | pbrook | #define KERNEL_LOAD_ADDR 0x10000 |
15 | ca02f319 | pbrook | |
16 | ca02f319 | pbrook | /* Board init. */
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17 | ca02f319 | pbrook | |
18 | c227f099 | Anthony Liguori | static void dummy_m68k_init(ram_addr_t ram_size, |
19 | 3023f332 | aliguori | const char *boot_device, |
20 | ca02f319 | pbrook | const char *kernel_filename, const char *kernel_cmdline, |
21 | ca02f319 | pbrook | const char *initrd_filename, const char *cpu_model) |
22 | ca02f319 | pbrook | { |
23 | ca02f319 | pbrook | CPUState *env; |
24 | ca02f319 | pbrook | int kernel_size;
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25 | ca02f319 | pbrook | uint64_t elf_entry; |
26 | c227f099 | Anthony Liguori | target_phys_addr_t entry; |
27 | ca02f319 | pbrook | |
28 | ca02f319 | pbrook | if (!cpu_model)
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29 | ca02f319 | pbrook | cpu_model = "cfv4e";
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30 | cd08ce8f | pbrook | env = cpu_init(cpu_model); |
31 | cd08ce8f | pbrook | if (!env) {
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32 | cd08ce8f | pbrook | fprintf(stderr, "Unable to find m68k CPU definition\n");
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33 | cd08ce8f | pbrook | exit(1);
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34 | ca02f319 | pbrook | } |
35 | ca02f319 | pbrook | |
36 | ca02f319 | pbrook | /* Initialize CPU registers. */
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37 | ca02f319 | pbrook | env->vbr = 0;
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38 | ca02f319 | pbrook | |
39 | ca02f319 | pbrook | /* RAM at address zero */
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40 | ca02f319 | pbrook | cpu_register_physical_memory(0, ram_size,
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41 | 1724f049 | Alex Williamson | qemu_ram_alloc(NULL, "dummy_m68k.ram", ram_size) | IO_MEM_RAM); |
42 | ca02f319 | pbrook | |
43 | ca02f319 | pbrook | /* Load kernel. */
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44 | ca02f319 | pbrook | if (kernel_filename) {
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45 | 409dbce5 | Aurelien Jarno | kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, |
46 | 409dbce5 | Aurelien Jarno | NULL, NULL, 1, ELF_MACHINE, 0); |
47 | ca02f319 | pbrook | entry = elf_entry; |
48 | ca02f319 | pbrook | if (kernel_size < 0) { |
49 | 5a9154e0 | aliguori | kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL); |
50 | ca02f319 | pbrook | } |
51 | ca02f319 | pbrook | if (kernel_size < 0) { |
52 | dcac9679 | pbrook | kernel_size = load_image_targphys(kernel_filename, |
53 | dcac9679 | pbrook | KERNEL_LOAD_ADDR, |
54 | dcac9679 | pbrook | ram_size - KERNEL_LOAD_ADDR); |
55 | ca02f319 | pbrook | entry = KERNEL_LOAD_ADDR; |
56 | ca02f319 | pbrook | } |
57 | ca02f319 | pbrook | if (kernel_size < 0) { |
58 | ca02f319 | pbrook | fprintf(stderr, "qemu: could not load kernel '%s'\n",
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59 | ca02f319 | pbrook | kernel_filename); |
60 | ca02f319 | pbrook | exit(1);
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61 | ca02f319 | pbrook | } |
62 | ca02f319 | pbrook | } else {
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63 | ca02f319 | pbrook | entry = 0;
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64 | ca02f319 | pbrook | } |
65 | ca02f319 | pbrook | env->pc = entry; |
66 | ca02f319 | pbrook | } |
67 | ca02f319 | pbrook | |
68 | f80f9ec9 | Anthony Liguori | static QEMUMachine dummy_m68k_machine = {
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69 | 4b32e168 | aliguori | .name = "dummy",
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70 | 4b32e168 | aliguori | .desc = "Dummy board",
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71 | 4b32e168 | aliguori | .init = dummy_m68k_init, |
72 | ca02f319 | pbrook | }; |
73 | f80f9ec9 | Anthony Liguori | |
74 | f80f9ec9 | Anthony Liguori | static void dummy_m68k_machine_init(void) |
75 | f80f9ec9 | Anthony Liguori | { |
76 | f80f9ec9 | Anthony Liguori | qemu_register_machine(&dummy_m68k_machine); |
77 | f80f9ec9 | Anthony Liguori | } |
78 | f80f9ec9 | Anthony Liguori | |
79 | f80f9ec9 | Anthony Liguori | machine_init(dummy_m68k_machine_init); |