Archipelago » qemu

/*

 * QEMU OldWorld PowerMac (currently ~G3 Beige) hardware System Emulator

 *

 * Copyright (c) 2004-2007 Fabrice Bellard

 * Copyright (c) 2007 Jocelyn Mayer

 *

 * 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 "hw.h"

#include "ppc.h"

#include "ppc_mac.h"

#include "adb.h"

#include "mac_dbdma.h"

#include "nvram.h"

#include "pc.h"

#include "sysemu.h"

#include "net.h"

#include "isa.h"

#include "pci.h"

#include "boards.h"

#include "fw_cfg.h"

#include "escc.h"

#include "ide.h"

#include "loader.h"

#include "elf.h"

#include "kvm.h"

#include "kvm_ppc.h"

#include "blockdev.h"

#include "exec-memory.h"

#define MAX_IDE_BUS 2

#define CFG_ADDR 0xf0000510

static int fw_cfg_boot_set(void *opaque, const char *boot_device)

{

    fw_cfg_add_i16(opaque, FW_CFG_BOOT_DEVICE, boot_device[0]);

    return 0;

}

static uint64_t translate_kernel_address(void *opaque, uint64_t addr)

{

    return (addr & 0x0fffffff) + KERNEL_LOAD_ADDR;

}

static target_phys_addr_t round_page(target_phys_addr_t addr)

{

    return (addr + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;

}

static void ppc_heathrow_reset(void *opaque)

{

    CPUPPCState *env = opaque;

    cpu_state_reset(env);

}

static void ppc_heathrow_init (ram_addr_t ram_size,

                               const char *boot_device,

                               const char *kernel_filename,

                               const char *kernel_cmdline,

                               const char *initrd_filename,

                               const char *cpu_model)

{

    MemoryRegion *sysmem = get_system_memory();

    CPUPPCState *env = NULL;

    char *filename;

    qemu_irq *pic, **heathrow_irqs;

    int linux_boot, i;

    MemoryRegion *ram = g_new(MemoryRegion, 1);

    MemoryRegion *bios = g_new(MemoryRegion, 1);

    uint32_t kernel_base, initrd_base, cmdline_base = 0;

    int32_t kernel_size, initrd_size;

    PCIBus *pci_bus;

    MacIONVRAMState *nvr;

    int bios_size;

    MemoryRegion *pic_mem, *dbdma_mem, *cuda_mem;

    MemoryRegion *escc_mem, *escc_bar = g_new(MemoryRegion, 1), *ide_mem[2];

    uint16_t ppc_boot_device;

    DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];

    void *fw_cfg;

    void *dbdma;

    linux_boot = (kernel_filename != NULL);

    /* init CPUs */

    if (cpu_model == NULL)

        cpu_model = "G3";

    for (i = 0; i < smp_cpus; i++) {

        env = cpu_init(cpu_model);

        if (!env) {

            fprintf(stderr, "Unable to find PowerPC CPU definition\n");

            exit(1);

        }

        /* Set time-base frequency to 16.6 Mhz */

        cpu_ppc_tb_init(env,  16600000UL);

        qemu_register_reset(ppc_heathrow_reset, env);

    }

    /* allocate RAM */

    if (ram_size > (2047 << 20)) {

        fprintf(stderr,

                "qemu: Too much memory for this machine: %d MB, maximum 2047 MB\n",

                ((unsigned int)ram_size / (1 << 20)));

        exit(1);

    }

    memory_region_init_ram(ram, "ppc_heathrow.ram", ram_size);

    vmstate_register_ram_global(ram);

    memory_region_add_subregion(sysmem, 0, ram);

    /* allocate and load BIOS */

    memory_region_init_ram(bios, "ppc_heathrow.bios", BIOS_SIZE);

    vmstate_register_ram_global(bios);

    if (bios_name == NULL)

        bios_name = PROM_FILENAME;

    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);

    memory_region_set_readonly(bios, true);

    memory_region_add_subregion(sysmem, PROM_ADDR, bios);

    /* Load OpenBIOS (ELF) */

    if (filename) {

        bios_size = load_elf(filename, 0, NULL, NULL, NULL, NULL,

                             1, ELF_MACHINE, 0);

        g_free(filename);

    } else {

        bios_size = -1;

    }

    if (bios_size < 0 || bios_size > BIOS_SIZE) {

        hw_error("qemu: could not load PowerPC bios '%s'\n", bios_name);

        exit(1);

    }

    if (linux_boot) {

        uint64_t lowaddr = 0;

        int bswap_needed;

#ifdef BSWAP_NEEDED

        bswap_needed = 1;

#else

        bswap_needed = 0;

#endif

        kernel_base = KERNEL_LOAD_ADDR;

        kernel_size = load_elf(kernel_filename, translate_kernel_address, NULL,

                               NULL, &lowaddr, NULL, 1, ELF_MACHINE, 0);

        if (kernel_size < 0)

            kernel_size = load_aout(kernel_filename, kernel_base,

                                    ram_size - kernel_base, bswap_needed,

                                    TARGET_PAGE_SIZE);

        if (kernel_size < 0)

            kernel_size = load_image_targphys(kernel_filename,

                                              kernel_base,

                                              ram_size - kernel_base);

        if (kernel_size < 0) {

            hw_error("qemu: could not load kernel '%s'\n",

                      kernel_filename);

            exit(1);

        }

        /* load initrd */

        if (initrd_filename) {

            initrd_base = round_page(kernel_base + kernel_size + KERNEL_GAP);

            initrd_size = load_image_targphys(initrd_filename, initrd_base,

                                              ram_size - initrd_base);

            if (initrd_size < 0) {

                hw_error("qemu: could not load initial ram disk '%s'\n",

                         initrd_filename);

                exit(1);

            }

            cmdline_base = round_page(initrd_base + initrd_size);

        } else {

            initrd_base = 0;

            initrd_size = 0;

            cmdline_base = round_page(kernel_base + kernel_size + KERNEL_GAP);

        }

        ppc_boot_device = 'm';

    } else {

        kernel_base = 0;

        kernel_size = 0;

        initrd_base = 0;

        initrd_size = 0;

        ppc_boot_device = '\0';

        for (i = 0; boot_device[i] != '\0'; i++) {

            /* TOFIX: for now, the second IDE channel is not properly

             *        used by OHW. The Mac floppy disk are not emulated.

             *        For now, OHW cannot boot from the network.

             */

#if 0

            if (boot_device[i] >= 'a' && boot_device[i] <= 'f') {

                ppc_boot_device = boot_device[i];

                break;

            }

#else

            if (boot_device[i] >= 'c' && boot_device[i] <= 'd') {

                ppc_boot_device = boot_device[i];

                break;

            }

#endif

        }

        if (ppc_boot_device == '\0') {

            fprintf(stderr, "No valid boot device for G3 Beige machine\n");

            exit(1);

        }

    }

    /* Register 2 MB of ISA IO space */

    isa_mmio_init(0xfe000000, 0x00200000);

    /* XXX: we register only 1 output pin for heathrow PIC */

    heathrow_irqs = g_malloc0(smp_cpus * sizeof(qemu_irq *));

    heathrow_irqs[0] =

        g_malloc0(smp_cpus * sizeof(qemu_irq) * 1);

    /* Connect the heathrow PIC outputs to the 6xx bus */

    for (i = 0; i < smp_cpus; i++) {

        switch (PPC_INPUT(env)) {

        case PPC_FLAGS_INPUT_6xx:

            heathrow_irqs[i] = heathrow_irqs[0] + (i * 1);

            heathrow_irqs[i][0] =

                ((qemu_irq *)env->irq_inputs)[PPC6xx_INPUT_INT];

            break;

        default:

            hw_error("Bus model not supported on OldWorld Mac machine\n");

        }

    }

    /* init basic PC hardware */

    if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {

        hw_error("Only 6xx bus is supported on heathrow machine\n");

    }

    pic = heathrow_pic_init(&pic_mem, 1, heathrow_irqs);

    pci_bus = pci_grackle_init(0xfec00000, pic,

                               get_system_memory(),

                               get_system_io());

    pci_vga_init(pci_bus);

    escc_mem = escc_init(0, pic[0x0f], pic[0x10], serial_hds[0],

                               serial_hds[1], ESCC_CLOCK, 4);

    memory_region_init_alias(escc_bar, "escc-bar",

                             escc_mem, 0, memory_region_size(escc_mem));

    for(i = 0; i < nb_nics; i++)

        pci_nic_init_nofail(&nd_table[i], "ne2k_pci", NULL);

    ide_drive_get(hd, MAX_IDE_BUS);

    /* First IDE channel is a MAC IDE on the MacIO bus */

    dbdma = DBDMA_init(&dbdma_mem);

    ide_mem[0] = NULL;

    ide_mem[1] = pmac_ide_init(hd, pic[0x0D], dbdma, 0x16, pic[0x02]);

    /* Second IDE channel is a CMD646 on the PCI bus */

    hd[0] = hd[MAX_IDE_DEVS];

    hd[1] = hd[MAX_IDE_DEVS + 1];

    hd[3] = hd[2] = NULL;

    pci_cmd646_ide_init(pci_bus, hd, 0);

    /* cuda also initialize ADB */

    cuda_init(&cuda_mem, pic[0x12]);

    adb_kbd_init(&adb_bus);

    adb_mouse_init(&adb_bus);

    nvr = macio_nvram_init(0x2000, 4);

    pmac_format_nvram_partition(nvr, 0x2000);

    macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem,

               dbdma_mem, cuda_mem, nvr, 2, ide_mem, escc_bar);

    if (usb_enabled) {

        pci_create_simple(pci_bus, -1, "pci-ohci");

    }

    if (graphic_depth != 15 && graphic_depth != 32 && graphic_depth != 8)

        graphic_depth = 15;

    /* No PCI init: the BIOS will do it */

    fw_cfg = fw_cfg_init(0, 0, CFG_ADDR, CFG_ADDR + 2);

    fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);

    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);

    fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, ARCH_HEATHROW);

    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, kernel_base);

    fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);

    if (kernel_cmdline) {

        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, cmdline_base);

        pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE, kernel_cmdline);

    } else {

        fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_CMDLINE, 0);

    }

    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_base);

    fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);

    fw_cfg_add_i16(fw_cfg, FW_CFG_BOOT_DEVICE, ppc_boot_device);

    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_WIDTH, graphic_width);

    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_HEIGHT, graphic_height);

    fw_cfg_add_i16(fw_cfg, FW_CFG_PPC_DEPTH, graphic_depth);

    fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_IS_KVM, kvm_enabled());

    if (kvm_enabled()) {

#ifdef CONFIG_KVM

        uint8_t *hypercall;

        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, kvmppc_get_tbfreq());

        hypercall = g_malloc(16);

        kvmppc_get_hypercall(env, hypercall, 16);

        fw_cfg_add_bytes(fw_cfg, FW_CFG_PPC_KVM_HC, hypercall, 16);

        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_KVM_PID, getpid());

#endif

    } else {

        fw_cfg_add_i32(fw_cfg, FW_CFG_PPC_TBFREQ, get_ticks_per_sec());

    }

    qemu_register_boot_set(fw_cfg_boot_set, fw_cfg);

}

static QEMUMachine heathrow_machine = {

    .name = "g3beige",

    .desc = "Heathrow based PowerMAC",

    .init = ppc_heathrow_init,

    .max_cpus = MAX_CPUS,

#ifndef TARGET_PPC64

    .is_default = 1,

#endif

};

static void heathrow_machine_init(void)

{

    qemu_register_machine(&heathrow_machine);

}

machine_init(heathrow_machine_init);