1 | /* |
2 | * Arnewsh 5206 ColdFire system emulation. |
3 | * |
4 | * Copyright (c) 2007 CodeSourcery. |
5 | * |
6 | * This code is licensed under the GPL |
7 | */ |
8 | |
9 | #include "qemu/osdep.h" |
10 | #include "qapi/error.h" |
11 | #include "cpu.h" |
12 | #include "hw/m68k/mcf.h" |
13 | #include "hw/boards.h" |
14 | #include "hw/loader.h" |
15 | #include "elf.h" |
16 | #include "exec/address-spaces.h" |
17 | #include "qemu/error-report.h" |
18 | #include "sysemu/qtest.h" |
19 | |
20 | #define KERNEL_LOAD_ADDR 0x10000 |
21 | #define AN5206_MBAR_ADDR 0x10000000 |
22 | #define AN5206_RAMBAR_ADDR 0x20000000 |
23 | |
24 | /* Board init. */ |
25 | |
26 | static void an5206_init(MachineState *machine) |
27 | { |
28 | ram_addr_t ram_size = machine->ram_size; |
29 | const char *kernel_filename = machine->kernel_filename; |
30 | M68kCPU *cpu; |
31 | CPUM68KState *env; |
32 | int kernel_size; |
33 | uint64_t elf_entry; |
34 | hwaddr entry; |
35 | MemoryRegion *address_space_mem = get_system_memory(); |
36 | MemoryRegion *ram = g_new(MemoryRegion, 1); |
37 | MemoryRegion *sram = g_new(MemoryRegion, 1); |
38 | |
39 | cpu = M68K_CPU(cpu_create(machine->cpu_type)); |
40 | env = &cpu->env; |
41 | |
42 | /* Initialize CPU registers. */ |
43 | env->vbr = 0; |
44 | /* TODO: allow changing MBAR and RAMBAR. */ |
45 | env->mbar = AN5206_MBAR_ADDR | 1; |
46 | env->rambar0 = AN5206_RAMBAR_ADDR | 1; |
47 | |
48 | /* DRAM at address zero */ |
49 | memory_region_allocate_system_memory(ram, NULL, "an5206.ram" , ram_size); |
50 | memory_region_add_subregion(address_space_mem, 0, ram); |
51 | |
52 | /* Internal SRAM. */ |
53 | memory_region_init_ram(sram, NULL, "an5206.sram" , 512, &error_fatal); |
54 | memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); |
55 | |
56 | mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); |
57 | |
58 | /* Load kernel. */ |
59 | if (!kernel_filename) { |
60 | if (qtest_enabled()) { |
61 | return; |
62 | } |
63 | error_report("Kernel image must be specified" ); |
64 | exit(1); |
65 | } |
66 | |
67 | kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, |
68 | NULL, NULL, 1, EM_68K, 0, 0); |
69 | entry = elf_entry; |
70 | if (kernel_size < 0) { |
71 | kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, |
72 | NULL, NULL); |
73 | } |
74 | if (kernel_size < 0) { |
75 | kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, |
76 | ram_size - KERNEL_LOAD_ADDR); |
77 | entry = KERNEL_LOAD_ADDR; |
78 | } |
79 | if (kernel_size < 0) { |
80 | error_report("Could not load kernel '%s'" , kernel_filename); |
81 | exit(1); |
82 | } |
83 | |
84 | env->pc = entry; |
85 | } |
86 | |
87 | static void an5206_machine_init(MachineClass *mc) |
88 | { |
89 | mc->desc = "Arnewsh 5206" ; |
90 | mc->init = an5206_init; |
91 | mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206" ); |
92 | } |
93 | |
94 | DEFINE_MACHINE("an5206" , an5206_machine_init) |
95 | |