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(MemoryRegion *sysmem, uint32_t base) 24 { 25 DeviceState *dev; 26 SysBusDevice *s; 27 28 dev = qdev_new(TYPE_MCF5206_MBAR); 29 s = SYS_BUS_DEVICE(dev); 30 sysbus_realize_and_unref(s, &error_fatal); 31 32 memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0)); 33 } 34 35 static void an5206_init(MachineState *machine) 36 { 37 ram_addr_t ram_size = machine->ram_size; 38 const char *kernel_filename = machine->kernel_filename; 39 M68kCPU *cpu; 40 CPUM68KState *env; 41 int kernel_size; 42 uint64_t elf_entry; 43 hwaddr entry; 44 MemoryRegion *address_space_mem = get_system_memory(); 45 MemoryRegion *sram = g_new(MemoryRegion, 1); 46 47 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 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_add_subregion(address_space_mem, 0, machine->ram); 58 59 /* Internal SRAM. */ 60 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 61 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 62 63 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR); 64 65 /* Load kernel. */ 66 if (!kernel_filename) { 67 if (qtest_enabled()) { 68 return; 69 } 70 error_report("Kernel image must be specified"); 71 exit(1); 72 } 73 74 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, 75 NULL, NULL, NULL, 1, EM_68K, 0, 0); 76 entry = elf_entry; 77 if (kernel_size < 0) { 78 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, 79 NULL, NULL); 80 } 81 if (kernel_size < 0) { 82 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 83 ram_size - KERNEL_LOAD_ADDR); 84 entry = KERNEL_LOAD_ADDR; 85 } 86 if (kernel_size < 0) { 87 error_report("Could not load kernel '%s'", kernel_filename); 88 exit(1); 89 } 90 91 env->pc = entry; 92 } 93 94 static void an5206_machine_init(MachineClass *mc) 95 { 96 mc->desc = "Arnewsh 5206"; 97 mc->init = an5206_init; 98 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206"); 99 mc->default_ram_id = "an5206.ram"; 100 } 101 102 DEFINE_MACHINE("an5206", an5206_machine_init) 103