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 "hw/hw.h" 11 #include "hw/m68k/mcf.h" 12 #include "hw/boards.h" 13 #include "hw/loader.h" 14 #include "elf.h" 15 #include "exec/address-spaces.h" 16 #include "qemu/error-report.h" 17 #include "sysemu/qtest.h" 18 19 #define KERNEL_LOAD_ADDR 0x10000 20 #define AN5206_MBAR_ADDR 0x10000000 21 #define AN5206_RAMBAR_ADDR 0x20000000 22 23 /* Board init. */ 24 25 static void an5206_init(MachineState *machine) 26 { 27 ram_addr_t ram_size = machine->ram_size; 28 const char *cpu_model = machine->cpu_model; 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 if (!cpu_model) { 40 cpu_model = "m5206"; 41 } 42 cpu = cpu_m68k_init(cpu_model); 43 if (!cpu) { 44 error_report("Unable to find m68k CPU definition"); 45 exit(1); 46 } 47 env = &cpu->env; 48 49 /* Initialize CPU registers. */ 50 env->vbr = 0; 51 /* TODO: allow changing MBAR and RAMBAR. */ 52 env->mbar = AN5206_MBAR_ADDR | 1; 53 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 54 55 /* DRAM at address zero */ 56 memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size); 57 memory_region_add_subregion(address_space_mem, 0, ram); 58 59 /* Internal SRAM. */ 60 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 61 vmstate_register_ram_global(sram); 62 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 63 64 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); 65 66 /* Load kernel. */ 67 if (!kernel_filename) { 68 if (qtest_enabled()) { 69 return; 70 } 71 fprintf(stderr, "Kernel image must be specified\n"); 72 exit(1); 73 } 74 75 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, 76 NULL, NULL, 1, EM_68K, 0); 77 entry = elf_entry; 78 if (kernel_size < 0) { 79 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, 80 NULL, NULL); 81 } 82 if (kernel_size < 0) { 83 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 84 ram_size - KERNEL_LOAD_ADDR); 85 entry = KERNEL_LOAD_ADDR; 86 } 87 if (kernel_size < 0) { 88 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 89 exit(1); 90 } 91 92 env->pc = entry; 93 } 94 95 static void an5206_machine_init(MachineClass *mc) 96 { 97 mc->desc = "Arnewsh 5206"; 98 mc->init = an5206_init; 99 } 100 101 DEFINE_MACHINE("an5206", an5206_machine_init) 102