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 "qemu-common.h" 12 #include "cpu.h" 13 #include "hw/hw.h" 14 #include "hw/m68k/mcf.h" 15 #include "hw/boards.h" 16 #include "hw/loader.h" 17 #include "elf.h" 18 #include "exec/address-spaces.h" 19 #include "qemu/error-report.h" 20 #include "sysemu/qtest.h" 21 22 #define KERNEL_LOAD_ADDR 0x10000 23 #define AN5206_MBAR_ADDR 0x10000000 24 #define AN5206_RAMBAR_ADDR 0x20000000 25 26 /* Board init. */ 27 28 static void an5206_init(MachineState *machine) 29 { 30 ram_addr_t ram_size = machine->ram_size; 31 const char *kernel_filename = machine->kernel_filename; 32 M68kCPU *cpu; 33 CPUM68KState *env; 34 int kernel_size; 35 uint64_t elf_entry; 36 hwaddr entry; 37 MemoryRegion *address_space_mem = get_system_memory(); 38 MemoryRegion *ram = g_new(MemoryRegion, 1); 39 MemoryRegion *sram = g_new(MemoryRegion, 1); 40 41 cpu = M68K_CPU(cpu_create(machine->cpu_type)); 42 env = &cpu->env; 43 44 /* Initialize CPU registers. */ 45 env->vbr = 0; 46 /* TODO: allow changing MBAR and RAMBAR. */ 47 env->mbar = AN5206_MBAR_ADDR | 1; 48 env->rambar0 = AN5206_RAMBAR_ADDR | 1; 49 50 /* DRAM at address zero */ 51 memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size); 52 memory_region_add_subregion(address_space_mem, 0, ram); 53 54 /* Internal SRAM. */ 55 memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal); 56 memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); 57 58 mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); 59 60 /* Load kernel. */ 61 if (!kernel_filename) { 62 if (qtest_enabled()) { 63 return; 64 } 65 error_report("Kernel image must be specified"); 66 exit(1); 67 } 68 69 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, &elf_entry, 70 NULL, NULL, 1, EM_68K, 0, 0); 71 entry = elf_entry; 72 if (kernel_size < 0) { 73 kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL, 74 NULL, NULL); 75 } 76 if (kernel_size < 0) { 77 kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, 78 ram_size - KERNEL_LOAD_ADDR); 79 entry = KERNEL_LOAD_ADDR; 80 } 81 if (kernel_size < 0) { 82 error_report("Could not load kernel '%s'", kernel_filename); 83 exit(1); 84 } 85 86 env->pc = entry; 87 } 88 89 static void an5206_machine_init(MachineClass *mc) 90 { 91 mc->desc = "Arnewsh 5206"; 92 mc->init = an5206_init; 93 mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206"); 94 } 95 96 DEFINE_MACHINE("an5206", an5206_machine_init) 97