+++ /dev/null
-/*
- * QEMU/MIPS pseudo-board
- *
- * emulates a simple machine with ISA-like bus.
- * ISA IO space mapped to the 0x14000000 (PHYS) and
- * ISA memory at the 0x10000000 (PHYS, 16Mb in size).
- * All peripherial devices are attached to this "bus" with
- * the standard PC ISA addresses.
- */
-
-#include "qemu/osdep.h"
-#include "qemu/units.h"
-#include "qapi/error.h"
-#include "qemu-common.h"
-#include "cpu.h"
-#include "hw/clock.h"
-#include "hw/mips/mips.h"
-#include "hw/mips/cpudevs.h"
-#include "hw/intc/i8259.h"
-#include "hw/char/serial.h"
-#include "hw/isa/isa.h"
-#include "net/net.h"
-#include "hw/net/ne2000-isa.h"
-#include "sysemu/sysemu.h"
-#include "hw/boards.h"
-#include "hw/block/flash.h"
-#include "qemu/log.h"
-#include "hw/mips/bios.h"
-#include "hw/ide.h"
-#include "hw/ide/internal.h"
-#include "hw/loader.h"
-#include "elf.h"
-#include "hw/rtc/mc146818rtc.h"
-#include "hw/input/i8042.h"
-#include "hw/timer/i8254.h"
-#include "exec/address-spaces.h"
-#include "sysemu/qtest.h"
-#include "sysemu/reset.h"
-#include "sysemu/runstate.h"
-#include "qemu/error-report.h"
-
-#define MAX_IDE_BUS 2
-
-static const int ide_iobase[2] = { 0x1f0, 0x170 };
-static const int ide_iobase2[2] = { 0x3f6, 0x376 };
-static const int ide_irq[2] = { 14, 15 };
-
-static ISADevice *pit; /* PIT i8254 */
-
-/* i8254 PIT is attached to the IRQ0 at PIC i8259 */
-
-static struct _loaderparams {
- int ram_size;
- const char *kernel_filename;
- const char *kernel_cmdline;
- const char *initrd_filename;
-} loaderparams;
-
-static void mips_qemu_write(void *opaque, hwaddr addr,
- uint64_t val, unsigned size)
-{
- if ((addr & 0xffff) == 0 && val == 42) {
- qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
- } else if ((addr & 0xffff) == 4 && val == 42) {
- qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
- }
-}
-
-static uint64_t mips_qemu_read(void *opaque, hwaddr addr,
- unsigned size)
-{
- return 0;
-}
-
-static const MemoryRegionOps mips_qemu_ops = {
- .read = mips_qemu_read,
- .write = mips_qemu_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-typedef struct ResetData {
- MIPSCPU *cpu;
- uint64_t vector;
-} ResetData;
-
-static int64_t load_kernel(void)
-{
- const size_t params_size = 264;
- int64_t entry, kernel_high, initrd_size;
- long kernel_size;
- ram_addr_t initrd_offset;
- uint32_t *params_buf;
- int big_endian;
-
-#ifdef TARGET_WORDS_BIGENDIAN
- big_endian = 1;
-#else
- big_endian = 0;
-#endif
- kernel_size = load_elf(loaderparams.kernel_filename, NULL,
- cpu_mips_kseg0_to_phys, NULL,
- (uint64_t *)&entry, NULL,
- (uint64_t *)&kernel_high, NULL, big_endian,
- EM_MIPS, 1, 0);
- if (kernel_size < 0) {
- error_report("could not load kernel '%s': %s",
- loaderparams.kernel_filename,
- load_elf_strerror(kernel_size));
- 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 = ROUND_UP(kernel_high, INITRD_PAGE_SIZE);
- if (initrd_offset + initrd_size > ram_size) {
- error_report("memory too small for initial ram disk '%s'",
- loaderparams.initrd_filename);
- exit(1);
- }
- initrd_size = load_image_targphys(loaderparams.initrd_filename,
- initrd_offset,
- ram_size - initrd_offset);
- }
- if (initrd_size == (target_ulong) -1) {
- error_report("could not load initial ram disk '%s'",
- loaderparams.initrd_filename);
- exit(1);
- }
- }
-
- /* Store command line. */
- params_buf = g_malloc(params_size);
-
- params_buf[0] = tswap32(ram_size);
- params_buf[1] = tswap32(0x12345678);
-
- if (initrd_size > 0) {
- snprintf((char *)params_buf + 8, 256,
- "rd_start=0x%" PRIx64 " rd_size=%" PRId64 " %s",
- cpu_mips_phys_to_kseg0(NULL, initrd_offset),
- initrd_size, loaderparams.kernel_cmdline);
- } else {
- snprintf((char *)params_buf + 8, 256,
- "%s", loaderparams.kernel_cmdline);
- }
-
- rom_add_blob_fixed("params", params_buf, params_size,
- 16 * MiB - params_size);
-
- g_free(params_buf);
- 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;
-}
-
-static const int sector_len = 32 * KiB;
-static
-void mips_r4k_init(MachineState *machine)
-{
- 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 *bios;
- MemoryRegion *iomem = g_new(MemoryRegion, 1);
- MemoryRegion *isa_io = g_new(MemoryRegion, 1);
- MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
- int bios_size;
- Clock *cpuclk;
- MIPSCPU *cpu;
- CPUMIPSState *env;
- ResetData *reset_info;
- int i;
- qemu_irq *i8259;
- ISABus *isa_bus;
- DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
- DriveInfo *dinfo;
- int be;
-
- cpuclk = clock_new(OBJECT(machine), "cpu-refclk");
- clock_set_hz(cpuclk, 200000000); /* 200 MHz */
-
- /* init CPUs */
- cpu = mips_cpu_create_with_clock(machine->cpu_type, cpuclk);
- 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 */
- if (machine->ram_size > 256 * MiB) {
- error_report("Too much memory for this machine: %" PRId64 "MB,"
- " maximum 256MB", ram_size / MiB);
- exit(1);
- }
- memory_region_add_subregion(address_space_mem, 0, machine->ram);
-
- memory_region_init_io(iomem, NULL, &mips_qemu_ops,
- NULL, "mips-qemu", 0x10000);
-
- memory_region_add_subregion(address_space_mem, 0x1fbf0000, iomem);
-
- /*
- * Try to load a BIOS image. If this fails, we continue regardless,
- * but initialize the hardware ourselves. When a kernel gets
- * preloaded we also initialize the hardware, since the BIOS wasn't
- * run.
- */
-
- if (bios_name == NULL) {
- bios_name = BIOS_FILENAME;
- }
- filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
- if (filename) {
- bios_size = get_image_size(filename);
- } else {
- bios_size = -1;
- }
-#ifdef TARGET_WORDS_BIGENDIAN
- be = 1;
-#else
- be = 0;
-#endif
- dinfo = drive_get(IF_PFLASH, 0, 0);
- if ((bios_size > 0) && (bios_size <= BIOS_SIZE)) {
- bios = g_new(MemoryRegion, 1);
- memory_region_init_rom(bios, NULL, "mips_r4k.bios", BIOS_SIZE,
- &error_fatal);
- memory_region_add_subregion(get_system_memory(), 0x1fc00000, bios);
-
- load_image_targphys(filename, 0x1fc00000, BIOS_SIZE);
- } else if (dinfo != NULL) {
- uint32_t mips_rom = 0x00400000;
- if (!pflash_cfi01_register(0x1fc00000, "mips_r4k.bios", mips_rom,
- blk_by_legacy_dinfo(dinfo),
- sector_len, 4, 0, 0, 0, 0, be)) {
- fprintf(stderr, "qemu: Error registering flash memory.\n");
- }
- } else if (!qtest_enabled()) {
- /* not fatal */
- warn_report("could not load MIPS bios '%s'", bios_name);
- }
- g_free(filename);
-
- if (kernel_filename) {
- loaderparams.ram_size = machine->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(cpu);
- cpu_mips_clock_init(cpu);
-
- /* ISA bus: IO space at 0x14000000, mem space at 0x10000000 */
- memory_region_init_alias(isa_io, NULL, "isa-io",
- get_system_io(), 0, 0x00010000);
- memory_region_init(isa_mem, NULL, "isa-mem", 0x01000000);
- memory_region_add_subregion(get_system_memory(), 0x14000000, isa_io);
- memory_region_add_subregion(get_system_memory(), 0x10000000, isa_mem);
- isa_bus = isa_bus_new(NULL, isa_mem, get_system_io(), &error_abort);
-
- /* The PIC is attached to the MIPS CPU INT0 pin */
- i8259 = i8259_init(isa_bus, env->irq[2]);
- isa_bus_irqs(isa_bus, i8259);
-
- mc146818_rtc_init(isa_bus, 2000, NULL);
-
- pit = i8254_pit_init(isa_bus, 0x40, 0, NULL);
-
- serial_hds_isa_init(isa_bus, 0, MAX_ISA_SERIAL_PORTS);
-
- isa_vga_init(isa_bus);
-
- if (nd_table[0].used) {
- isa_ne2000_init(isa_bus, 0x300, 9, &nd_table[0]);
- }
-
- ide_drive_get(hd, ARRAY_SIZE(hd));
- for (i = 0; i < MAX_IDE_BUS; i++)
- isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i], ide_irq[i],
- hd[MAX_IDE_DEVS * i],
- hd[MAX_IDE_DEVS * i + 1]);
-
- isa_create_simple(isa_bus, TYPE_I8042);
-}
-
-static void mips_machine_init(MachineClass *mc)
-{
- mc->deprecation_reason = "use malta machine type instead";
- mc->desc = "mips r4k platform";
- mc->init = mips_r4k_init;
- mc->block_default_type = IF_IDE;
-#ifdef TARGET_MIPS64
- mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
-#else
- mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
-#endif
- mc->default_ram_id = "mips_r4k.ram";
-}
-
-DEFINE_MACHINE("mips", mips_machine_init)
projects / mirror_qemu.git / commitdiff