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