diff options
Diffstat (limited to 'hw/m68k/an5206.c')
-rw-r--r-- | hw/m68k/an5206.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/hw/m68k/an5206.c b/hw/m68k/an5206.c new file mode 100644 index 0000000..7c21c66 --- /dev/null +++ b/hw/m68k/an5206.c @@ -0,0 +1,100 @@ +/* + * Arnewsh 5206 ColdFire system emulation. + * + * Copyright (c) 2007 CodeSourcery. + * + * This code is licensed under the GPL + */ + +#include "hw/hw.h" +#include "hw/mcf.h" +#include "hw/boards.h" +#include "hw/loader.h" +#include "elf.h" +#include "exec/address-spaces.h" + +#define KERNEL_LOAD_ADDR 0x10000 +#define AN5206_MBAR_ADDR 0x10000000 +#define AN5206_RAMBAR_ADDR 0x20000000 + +/* Board init. */ + +static void an5206_init(QEMUMachineInitArgs *args) +{ + ram_addr_t ram_size = args->ram_size; + const char *cpu_model = args->cpu_model; + const char *kernel_filename = args->kernel_filename; + M68kCPU *cpu; + CPUM68KState *env; + int kernel_size; + uint64_t elf_entry; + hwaddr entry; + MemoryRegion *address_space_mem = get_system_memory(); + MemoryRegion *ram = g_new(MemoryRegion, 1); + MemoryRegion *sram = g_new(MemoryRegion, 1); + + if (!cpu_model) { + cpu_model = "m5206"; + } + cpu = cpu_m68k_init(cpu_model); + if (!cpu) { + hw_error("Unable to find m68k CPU definition\n"); + } + env = &cpu->env; + + /* Initialize CPU registers. */ + env->vbr = 0; + /* TODO: allow changing MBAR and RAMBAR. */ + env->mbar = AN5206_MBAR_ADDR | 1; + env->rambar0 = AN5206_RAMBAR_ADDR | 1; + + /* DRAM at address zero */ + memory_region_init_ram(ram, "an5206.ram", ram_size); + vmstate_register_ram_global(ram); + memory_region_add_subregion(address_space_mem, 0, ram); + + /* Internal SRAM. */ + memory_region_init_ram(sram, "an5206.sram", 512); + vmstate_register_ram_global(sram); + memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram); + + mcf5206_init(address_space_mem, AN5206_MBAR_ADDR, cpu); + + /* Load kernel. */ + if (!kernel_filename) { + fprintf(stderr, "Kernel image must be specified\n"); + exit(1); + } + + kernel_size = load_elf(kernel_filename, NULL, NULL, &elf_entry, + NULL, NULL, 1, ELF_MACHINE, 0); + entry = elf_entry; + if (kernel_size < 0) { + kernel_size = load_uimage(kernel_filename, &entry, NULL, NULL); + } + if (kernel_size < 0) { + kernel_size = load_image_targphys(kernel_filename, KERNEL_LOAD_ADDR, + ram_size - KERNEL_LOAD_ADDR); + entry = KERNEL_LOAD_ADDR; + } + if (kernel_size < 0) { + fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); + exit(1); + } + + env->pc = entry; +} + +static QEMUMachine an5206_machine = { + .name = "an5206", + .desc = "Arnewsh 5206", + .init = an5206_init, + DEFAULT_MACHINE_OPTIONS, +}; + +static void an5206_machine_init(void) +{ + qemu_register_machine(&an5206_machine); +} + +machine_init(an5206_machine_init); |