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 "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 static void mcf5206_init(M68kCPU *cpu, MemoryRegion *sysmem, uint32_t base) 24 { 25 DeviceState *dev; 26 SysBusDevice *s; 27 28 dev = qdev_new(TYPE_MCF5206_MBAR); 29 object_property_set_link(OBJECT(dev), "m68k-cpu", 30 OBJECT(cpu), &error_abort); 31 s = SYS_BUS_DEVICE(dev); 32 sysbus_realize_and_unref(s, &error_fatal); 33 34 memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0)); 35 } 36 37 static void an5206_init(MachineState *machine) 38 { 39 ram_addr_t ram_size = machine->ram_size; 40 const char *kernel_filename = machine->kernel_filename; 41 M68kCPU *cpu; 42 CPUM68KState *env; 43 int kernel_size; 44 uint64_t elf_entry; 45 hwaddr entry; 46 MemoryRegion *address_space_mem = get_system_memory(); 47 MemoryRegion *sram = g_new(MemoryRegion, 1); 48 49 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 50 env = &cpu->env; 51 52 /* Initialize CPU registers. */ 53 env->vbr = 0; 54 /* TODO: allow changing MBAR and RAMBAR. */ 55 env->mbar = AN5206_MBAR_ADDR | 1; 56 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 57 58 /* DRAM at address zero */ 59 memory_region_add_subregion(address_space_mem, 0, machine->ram); 60 61 /* Internal SRAM. */ 62 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 63 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 64 65 mcf5206_init(cpu, address_space_mem, AN5206_MBAR_ADDR); 66 67 /* Load kernel. */ 68 if (!kernel_filename) { 69 if (qtest_enabled()) { 70 return; 71 } 72 error_report("Kernel image must be specified"); 73 exit(1); 74 } 75 76 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, 77 NULL, 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 error_report("Could not load kernel '%s'", 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 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206"); 101 mc->default_ram_id = "an5206.ram"; 102 } 103 104 DEFINE_MACHINE("an5206", an5206_machine_init) 105