diff options
Diffstat (limited to 'qemu/hw/mips/mips_mipssim.c')
| -rw-r--r-- | qemu/hw/mips/mips_mipssim.c | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/qemu/hw/mips/mips_mipssim.c b/qemu/hw/mips/mips_mipssim.c deleted file mode 100644 index a2c2a1646..000000000 --- a/qemu/hw/mips/mips_mipssim.c +++ /dev/null @@ -1,244 +0,0 @@ -/* - * QEMU/mipssim emulation - * - * Emulates a very simple machine model similar to the one used by the - * proprietary MIPS emulator. - * - * Copyright (c) 2007 Thiemo Seufer - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qemu-common.h" -#include "cpu.h" -#include "hw/hw.h" -#include "hw/mips/mips.h" -#include "hw/mips/cpudevs.h" -#include "hw/char/serial.h" -#include "hw/isa/isa.h" -#include "net/net.h" -#include "sysemu/sysemu.h" -#include "hw/boards.h" -#include "hw/mips/bios.h" -#include "hw/loader.h" -#include "elf.h" -#include "hw/sysbus.h" -#include "exec/address-spaces.h" -#include "qemu/error-report.h" -#include "sysemu/qtest.h" - -static struct _loaderparams { - int ram_size; - const char *kernel_filename; - const char *kernel_cmdline; - const char *initrd_filename; -} loaderparams; - -typedef struct ResetData { - MIPSCPU *cpu; - uint64_t vector; -} ResetData; - -static int64_t load_kernel(void) -{ - int64_t entry, kernel_high; - long kernel_size; - long initrd_size; - ram_addr_t initrd_offset; - int big_endian; - -#ifdef TARGET_WORDS_BIGENDIAN - big_endian = 1; -#else - big_endian = 0; -#endif - - kernel_size = load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, - NULL, (uint64_t *)&entry, NULL, - (uint64_t *)&kernel_high, big_endian, - EM_MIPS, 1, 0); - if (kernel_size >= 0) { - if ((entry & ~0x7fffffffULL) == 0x80000000) - entry = (int32_t)entry; - } else { - fprintf(stderr, "qemu: could not load kernel '%s'\n", - loaderparams.kernel_filename); - exit(1); - } - - /* load initrd */ - initrd_size = 0; - initrd_offset = 0; - if (loaderparams.initrd_filename) { - initrd_size = get_image_size (loaderparams.initrd_filename); - if (initrd_size > 0) { - initrd_offset = (kernel_high + ~INITRD_PAGE_MASK) & INITRD_PAGE_MASK; - if (initrd_offset + initrd_size > loaderparams.ram_size) { - fprintf(stderr, - "qemu: memory too small for initial ram disk '%s'\n", - loaderparams.initrd_filename); - exit(1); - } - initrd_size = load_image_targphys(loaderparams.initrd_filename, - initrd_offset, loaderparams.ram_size - initrd_offset); - } - if (initrd_size == (target_ulong) -1) { - fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", - loaderparams.initrd_filename); - exit(1); - } - } - return entry; -} - -static void main_cpu_reset(void *opaque) -{ - ResetData *s = (ResetData *)opaque; - CPUMIPSState *env = &s->cpu->env; - - cpu_reset(CPU(s->cpu)); - env->active_tc.PC = s->vector & ~(target_ulong)1; - if (s->vector & 1) { - env->hflags |= MIPS_HFLAG_M16; - } -} - -static void mipsnet_init(int base, qemu_irq irq, NICInfo *nd) -{ - DeviceState *dev; - SysBusDevice *s; - - dev = qdev_create(NULL, "mipsnet"); - qdev_set_nic_properties(dev, nd); - qdev_init_nofail(dev); - - s = SYS_BUS_DEVICE(dev); - sysbus_connect_irq(s, 0, irq); - memory_region_add_subregion(get_system_io(), - base, - sysbus_mmio_get_region(s, 0)); -} - -static void -mips_mipssim_init(MachineState *machine) -{ - ram_addr_t ram_size = machine->ram_size; - const char *cpu_model = machine->cpu_model; - const char *kernel_filename = machine->kernel_filename; - const char *kernel_cmdline = machine->kernel_cmdline; - const char *initrd_filename = machine->initrd_filename; - char *filename; - MemoryRegion *address_space_mem = get_system_memory(); - MemoryRegion *isa = g_new(MemoryRegion, 1); - MemoryRegion *ram = g_new(MemoryRegion, 1); - MemoryRegion *bios = g_new(MemoryRegion, 1); - MIPSCPU *cpu; - CPUMIPSState *env; - ResetData *reset_info; - int bios_size; - - /* Init CPUs. */ - if (cpu_model == NULL) { -#ifdef TARGET_MIPS64 - cpu_model = "5Kf"; -#else - cpu_model = "24Kf"; -#endif - } - cpu = cpu_mips_init(cpu_model); - if (cpu == NULL) { - fprintf(stderr, "Unable to find CPU definition\n"); - exit(1); - } - env = &cpu->env; - - reset_info = g_malloc0(sizeof(ResetData)); - reset_info->cpu = cpu; - reset_info->vector = env->active_tc.PC; - qemu_register_reset(main_cpu_reset, reset_info); - - /* Allocate RAM. */ - memory_region_allocate_system_memory(ram, NULL, "mips_mipssim.ram", - ram_size); - memory_region_init_ram(bios, NULL, "mips_mipssim.bios", BIOS_SIZE, - &error_fatal); - vmstate_register_ram_global(bios); - memory_region_set_readonly(bios, true); - - memory_region_add_subregion(address_space_mem, 0, ram); - - /* Map the BIOS / boot exception handler. */ - memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios); - /* Load a BIOS / boot exception handler image. */ - if (bios_name == NULL) - bios_name = BIOS_FILENAME; - filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); - if (filename) { - bios_size = load_image_targphys(filename, 0x1fc00000LL, BIOS_SIZE); - g_free(filename); - } else { - bios_size = -1; - } - if ((bios_size < 0 || bios_size > BIOS_SIZE) && - !kernel_filename && !qtest_enabled()) { - /* Bail out if we have neither a kernel image nor boot vector code. */ - error_report("Could not load MIPS bios '%s', and no " - "-kernel argument was specified", bios_name); - exit(1); - } else { - /* We have a boot vector start address. */ - env->active_tc.PC = (target_long)(int32_t)0xbfc00000; - } - - if (kernel_filename) { - loaderparams.ram_size = ram_size; - loaderparams.kernel_filename = kernel_filename; - loaderparams.kernel_cmdline = kernel_cmdline; - loaderparams.initrd_filename = initrd_filename; - reset_info->vector = load_kernel(); - } - - /* Init CPU internal devices. */ - cpu_mips_irq_init_cpu(env); - cpu_mips_clock_init(env); - - /* Register 64 KB of ISA IO space at 0x1fd00000. */ - memory_region_init_alias(isa, NULL, "isa_mmio", - get_system_io(), 0, 0x00010000); - memory_region_add_subregion(get_system_memory(), 0x1fd00000, isa); - - /* A single 16450 sits at offset 0x3f8. It is attached to - MIPS CPU INT2, which is interrupt 4. */ - if (serial_hds[0]) - serial_init(0x3f8, env->irq[4], 115200, serial_hds[0], - get_system_io()); - - if (nd_table[0].used) - /* MIPSnet uses the MIPS CPU INT0, which is interrupt 2. */ - mipsnet_init(0x4200, env->irq[2], &nd_table[0]); -} - -static void mips_mipssim_machine_init(MachineClass *mc) -{ - mc->desc = "MIPS MIPSsim platform"; - mc->init = mips_mipssim_init; -} - -DEFINE_MACHINE("mipssim", mips_mipssim_machine_init) |