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 "hw/hw.h" 10 #include "hw/m68k/mcf.h" 11 #include "hw/boards.h" 12 #include "hw/loader.h" 13 #include "elf.h" 14 #include "exec/address-spaces.h" 15 16 #define KERNEL_LOAD_ADDR 0x10000 17 #define AN5206_MBAR_ADDR 0x10000000 18 #define AN5206_RAMBAR_ADDR 0x20000000 19 20 /* Board init. */ 21 22 static void an5206_init(QEMUMachineInitArgs *args) 23 { 24 ram_addr_t ram_size = args->ram_size; 25 const char *cpu_model = args->cpu_model; 26 const char *kernel_filename = args->kernel_filename; 27 M68kCPU *cpu; 28 CPUM68KState *env; 29 int kernel_size; 30 uint64_t elf_entry; 31 hwaddr entry; 32 MemoryRegion *address_space_mem = get_system_memory(); 33 MemoryRegion *ram = g_new(MemoryRegion, 1); 34 MemoryRegion *sram = g_new(MemoryRegion, 1); 35 36 if (!cpu_model) { 37 cpu_model = "m5206"; 38 } 39 cpu = cpu_m68k_init(cpu_model); 40 if (!cpu) { 41 hw_error("Unable to find m68k CPU definition\n"); 42 } 43 env = &cpu->env; 44 45 /* Initialize CPU registers. */ 46 env->vbr = 0; 47 /* TODO: allow changing MBAR and RAMBAR. */ 48 env->mbar = AN5206_MBAR_ADDR | 1; 49 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 50 51 /* DRAM at address zero */ 52 memory_region_init_ram(ram, NULL, "an5206.ram", ram_size); 53 vmstate_register_ram_global(ram); 54 memory_region_add_subregion(address_space_mem, 0, ram); 55 56 /* Internal SRAM. */ 57 memory_region_init_ram(sram, NULL, "an5206.sram", 512); 58 vmstate_register_ram_global(sram); 59 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 60 61 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); 62 63 /* Load kernel. */ 64 if (!kernel_filename) { 65 fprintf(stderr, "Kernel image must be specified\n"); 66 exit(1); 67 } 68 69 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, 70 NULL, NULL, 1, ELF_MACHINE, 0); 71 entry = elf_entry; 72 if (kernel_size < 0) { 73 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL); 74 } 75 if (kernel_size < 0) { 76 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 77 ram_size - KERNEL_LOAD_ADDR); 78 entry = KERNEL_LOAD_ADDR; 79 } 80 if (kernel_size < 0) { 81 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 82 exit(1); 83 } 84 85 env->pc = entry; 86 } 87 88 static QEMUMachine an5206_machine = { 89 .name = "an5206", 90 .desc = "Arnewsh 5206", 91 .init = an5206_init, 92 }; 93 94 static void an5206_machine_init(void) 95 { 96 qemu_register_machine(&an5206_machine); 97 } 98 99 machine_init(an5206_machine_init); 100