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 "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 static void mcf5206_init(MemoryRegion *sysmem, uint32_t base) 25 { 26 DeviceState *dev; 27 SysBusDevice *s; 28 29 dev = qdev_new(TYPE_MCF5206_MBAR); 30 s = SYS_BUS_DEVICE(dev); 31 sysbus_realize_and_unref(s, &error_fatal); 32 33 memory_region_add_subregion(sysmem, base, sysbus_mmio_get_region(s, 0)); 34 } 35 36 static void an5206_init(MachineState *machine) 37 { 38 ram_addr_t ram_size = machine->ram_size; 39 const char *kernel_filename = machine->kernel_filename; 40 M68kCPU *cpu; 41 CPUM68KState *env; 42 int kernel_size; 43 uint64_t elf_entry; 44 hwaddr entry; 45 MemoryRegion *address_space_mem = get_system_memory(); 46 MemoryRegion *sram = g_new(MemoryRegion, 1); 47 48 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 49 env = &cpu->env; 50 51 /* Initialize CPU registers. */ 52 env->vbr = 0; 53 /* TODO: allow changing MBAR and RAMBAR. */ 54 env->mbar = AN5206_MBAR_ADDR | 1; 55 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 56 57 /* DRAM at address zero */ 58 memory_region_add_subregion(address_space_mem, 0, machine->ram); 59 60 /* Internal SRAM. */ 61 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 62 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 63 64 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR); 65 66 /* Load kernel. */ 67 if (!kernel_filename) { 68 if (qtest_enabled()) { 69 return; 70 } 71 error_report("Kernel image must be specified"); 72 exit(1); 73 } 74 75 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, 76 NULL, NULL, NULL, 1, EM_68K, 0, 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 error_report("Could not load kernel '%s'", 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 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206"); 100 mc->default_ram_id = "an5206.ram"; 101 } 102 103 DEFINE_MACHINE("an5206", an5206_machine_init) 104