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 "hw/hw.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 *cpu_model = machine->cpu_model; 30 const char *kernel_filename = machine->kernel_filename; 31 M68kCPU *cpu; 32 CPUM68KState *env; 33 int kernel_size; 34 uint64_t elf_entry; 35 hwaddr entry; 36 MemoryRegion *address_space_mem = get_system_memory(); 37 MemoryRegion *ram = g_new(MemoryRegion, 1); 38 MemoryRegion *sram = g_new(MemoryRegion, 1); 39 40 if (!cpu_model) { 41 cpu_model = "m5206"; 42 } 43 cpu = cpu_m68k_init(cpu_model); 44 if (!cpu) { 45 error_report("Unable to find m68k CPU definition"); 46 exit(1); 47 } 48 env = &cpu->env; 49 50 /* Initialize CPU registers. */ 51 env->vbr = 0; 52 /* TODO: allow changing MBAR and RAMBAR. */ 53 env->mbar = AN5206_MBAR_ADDR | 1; 54 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 55 56 /* DRAM at address zero */ 57 memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size); 58 memory_region_add_subregion(address_space_mem, 0, ram); 59 60 /* Internal SRAM. */ 61 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 62 vmstate_register_ram_global(sram); 63 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 64 65 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); 66 67 /* Load kernel. */ 68 if (!kernel_filename) { 69 if (qtest_enabled()) { 70 return; 71 } 72 fprintf(stderr, "Kernel image must be specified\n"); 73 exit(1); 74 } 75 76 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, 77 NULL, NULL, 1, EM_68K, 0, 0); 78 entry = elf_entry; 79 if (kernel_size < 0) { 80 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, 81 NULL, NULL); 82 } 83 if (kernel_size < 0) { 84 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 85 ram_size - KERNEL_LOAD_ADDR); 86 entry = KERNEL_LOAD_ADDR; 87 } 88 if (kernel_size < 0) { 89 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 90 exit(1); 91 } 92 93 env->pc = entry; 94 } 95 96 static void an5206_machine_init(MachineClass *mc) 97 { 98 mc->desc = "Arnewsh 5206"; 99 mc->init = an5206_init; 100 } 101 102 DEFINE_MACHINE("an5206", an5206_machine_init) 103