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 #include "sysemu/qtest.h" 16 17 #define KERNEL_LOAD_ADDR 0x10000 18 #define AN5206_MBAR_ADDR 0x10000000 19 #define AN5206_RAMBAR_ADDR 0x20000000 20 21 /* Board init. */ 22 23 static void an5206_init(MachineState *machine) 24 { 25 ram_addr_t ram_size = machine->ram_size; 26 const char *cpu_model = machine->cpu_model; 27 const char *kernel_filename = machine->kernel_filename; 28 M68kCPU *cpu; 29 CPUM68KState *env; 30 int kernel_size; 31 uint64_t elf_entry; 32 hwaddr entry; 33 MemoryRegion *address_space_mem = get_system_memory(); 34 MemoryRegion *ram = g_new(MemoryRegion, 1); 35 MemoryRegion *sram = g_new(MemoryRegion, 1); 36 37 if (!cpu_model) { 38 cpu_model = "m5206"; 39 } 40 cpu = cpu_m68k_init(cpu_model); 41 if (!cpu) { 42 hw_error("Unable to find m68k CPU definition\n"); 43 } 44 env = &cpu->env; 45 46 /* Initialize CPU registers. */ 47 env->vbr = 0; 48 /* TODO: allow changing MBAR and RAMBAR. */ 49 env->mbar = AN5206_MBAR_ADDR | 1; 50 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 51 52 /* DRAM at address zero */ 53 memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size); 54 memory_region_add_subregion(address_space_mem, 0, ram); 55 56 /* Internal SRAM. */ 57 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_abort); 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 if (qtest_enabled()) { 66 return; 67 } 68 fprintf(stderr, "Kernel image must be specified\n"); 69 exit(1); 70 } 71 72 kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, 73 NULL, NULL, 1, ELF_MACHINE, 0); 74 entry = elf_entry; 75 if (kernel_size < 0) { 76 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, 77 NULL, NULL); 78 } 79 if (kernel_size < 0) { 80 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 81 ram_size - KERNEL_LOAD_ADDR); 82 entry = KERNEL_LOAD_ADDR; 83 } 84 if (kernel_size < 0) { 85 fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); 86 exit(1); 87 } 88 89 env->pc = entry; 90 } 91 92 static QEMUMachine an5206_machine = { 93 .name = "an5206", 94 .desc = "Arnewsh 5206", 95 .init = an5206_init, 96 }; 97 98 static void an5206_machine_init(void) 99 { 100 qemu_register_machine(&an5206_machine); 101 } 102 103 machine_init(an5206_machine_init); 104