[mirror_qemu.git] / hw / pc.c

/*
 * QEMU PC System Emulator
 * 
 * Copyright (c) 2003-2004 Fabrice Bellard
 * 
 * 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 "vl.h"

/* output Bochs bios info messages */
//#define DEBUG_BIOS

#define BIOS_FILENAME "bios.bin"
#define VGABIOS_FILENAME "vgabios.bin"
#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
#define LINUX_BOOT_FILENAME "linux_boot.bin"

#define KERNEL_LOAD_ADDR     0x00100000
#define INITRD_LOAD_ADDR     0x00400000
#define KERNEL_PARAMS_ADDR   0x00090000
#define KERNEL_CMDLINE_ADDR  0x00099000

int speaker_data_on;
int dummy_refresh_clock;
static fdctrl_t *floppy_controller;
static RTCState *rtc_state;
static PITState *pit;

static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
{
}

/* MSDOS compatibility mode FPU exception support */
/* XXX: add IGNNE support */
void cpu_set_ferr(CPUX86State *s)
{
    pic_set_irq(13, 1);
}

static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
{
    pic_set_irq(13, 0);
}

/* TSC handling */

uint64_t cpu_get_tsc(CPUX86State *env)
{
    return qemu_get_clock(vm_clock);
}

/* PC cmos mappings */

#define REG_EQUIPMENT_BYTE          0x14
#define REG_IBM_CENTURY_BYTE        0x32
#define REG_IBM_PS2_CENTURY_BYTE    0x37


static inline int to_bcd(RTCState *s, int a)
{
    return ((a / 10) << 4) | (a % 10);
}

static int cmos_get_fd_drive_type(int fd0)
{
    int val;

    switch (fd0) {
    case 0:
        /* 1.44 Mb 3"5 drive */
        val = 4;
        break;
    case 1:
        /* 2.88 Mb 3"5 drive */
        val = 5;
        break;
    case 2:
        /* 1.2 Mb 5"5 drive */
        val = 2;
        break;
    default:
        val = 0;
        break;
    }
    return val;
}

static void cmos_init(int ram_size, int boot_device)
{
    RTCState *s = rtc_state;
    int val;
    int fd0, fd1, nb;
    time_t ti;
    struct tm *tm;

    /* set the CMOS date */
    time(&ti);
    if (rtc_utc)
        tm = gmtime(&ti);
    else
        tm = localtime(&ti);
    rtc_set_date(s, tm);

    val = to_bcd(s, (tm->tm_year / 100) + 19);
    rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
    rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);

    /* various important CMOS locations needed by PC/Bochs bios */

    /* memory size */
    val = 640; /* base memory in K */
    rtc_set_memory(s, 0x15, val);
    rtc_set_memory(s, 0x16, val >> 8);

    val = (ram_size / 1024) - 1024;
    if (val > 65535)
        val = 65535;
    rtc_set_memory(s, 0x17, val);
    rtc_set_memory(s, 0x18, val >> 8);
    rtc_set_memory(s, 0x30, val);
    rtc_set_memory(s, 0x31, val >> 8);

    val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
    if (val > 65535)
        val = 65535;
    rtc_set_memory(s, 0x34, val);
    rtc_set_memory(s, 0x35, val >> 8);
    
    switch(boot_device) {
    case 'a':
    case 'b':
        rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
        break;
    default:
    case 'c':
        rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
        break;
    case 'd':
        rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
        break;
    }

    /* floppy type */

    fd0 = fdctrl_get_drive_type(floppy_controller, 0);
    fd1 = fdctrl_get_drive_type(floppy_controller, 1);

    val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
    rtc_set_memory(s, 0x10, val);
    
    val = 0;
    nb = 0;
    if (fd0 < 3)
        nb++;
    if (fd1 < 3)
        nb++;
    switch (nb) {
    case 0:
        break;
    case 1:
        val |= 0x01; /* 1 drive, ready for boot */
        break;
    case 2:
        val |= 0x41; /* 2 drives, ready for boot */
        break;
    }
    val |= 0x02; /* FPU is there */
    val |= 0x04; /* PS/2 mouse installed */
    rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);

}

static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
    speaker_data_on = (val >> 1) & 1;
    pit_set_gate(pit, 2, val & 1);
}

static uint32_t speaker_ioport_read(void *opaque, uint32_t addr)
{
    int out;
    out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
    dummy_refresh_clock ^= 1;
    return (speaker_data_on << 1) | pit_get_gate(pit, 2) | (out << 5) |
      (dummy_refresh_clock << 4);
}

static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
{
    cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1);
    /* XXX: bit 0 is fast reset */
}

static uint32_t ioport92_read(void *opaque, uint32_t addr)
{
    return ((cpu_single_env->a20_mask >> 20) & 1) << 1;
}

/***********************************************************/
/* Bochs BIOS debug ports */

void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
{
    static const char shutdown_str[8] = "Shutdown";
    static int shutdown_index = 0;
    
    switch(addr) {
        /* Bochs BIOS messages */
    case 0x400:
    case 0x401:
        fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
        exit(1);
    case 0x402:
    case 0x403:
#ifdef DEBUG_BIOS
        fprintf(stderr, "%c", val);
#endif
        break;
    case 0x8900:
        /* same as Bochs power off */
        if (val == shutdown_str[shutdown_index]) {
            shutdown_index++;
            if (shutdown_index == 8) {
                shutdown_index = 0;
                qemu_system_shutdown_request();
            }
        } else {
            shutdown_index = 0;
        }
        break;

        /* LGPL'ed VGA BIOS messages */
    case 0x501:
    case 0x502:
        fprintf(stderr, "VGA BIOS panic, line %d\n", val);
        exit(1);
    case 0x500:
    case 0x503:
#ifdef DEBUG_BIOS
        fprintf(stderr, "%c", val);
#endif
        break;
    }
}

void bochs_bios_init(void)
{
    register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
    register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
    register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
    register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
    register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);

    register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
    register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
    register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
    register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
}


int load_kernel(const char *filename, uint8_t *addr, 
                uint8_t *real_addr)
{
    int fd, size;
    int setup_sects;

    fd = open(filename, O_RDONLY);
    if (fd < 0)
        return -1;

    /* load 16 bit code */
    if (read(fd, real_addr, 512) != 512)
        goto fail;
    setup_sects = real_addr[0x1F1];
    if (!setup_sects)
        setup_sects = 4;
    if (read(fd, real_addr + 512, setup_sects * 512) != 
        setup_sects * 512)
        goto fail;
    
    /* load 32 bit code */
    size = read(fd, addr, 16 * 1024 * 1024);
    if (size < 0)
        goto fail;
    close(fd);
    return size;
 fail:
    close(fd);
    return -1;
}

static const int ide_iobase[2] = { 0x1f0, 0x170 };
static const int ide_iobase2[2] = { 0x3f6, 0x376 };
static const int ide_irq[2] = { 14, 15 };

#define NE2000_NB_MAX 6

static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };

/* PC hardware initialisation */
void pc_init(int ram_size, int vga_ram_size, int boot_device,
             DisplayState *ds, const char **fd_filename, int snapshot,
             const char *kernel_filename, const char *kernel_cmdline,
             const char *initrd_filename)
{
    char buf[1024];
    int ret, linux_boot, initrd_size, i, nb_nics1, fd;
    unsigned long bios_offset, vga_bios_offset;
    int bios_size, isa_bios_size;
    PCIBus *pci_bus;
    
    linux_boot = (kernel_filename != NULL);

    /* allocate RAM */
    cpu_register_physical_memory(0, ram_size, 0);

    /* BIOS load */
    bios_offset = ram_size + vga_ram_size;
    vga_bios_offset = bios_offset + 256 * 1024;

    snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
    bios_size = get_image_size(buf);
    if (bios_size <= 0 || 
        (bios_size % 65536) != 0 ||
        bios_size > (256 * 1024)) {
        goto bios_error;
    }
    ret = load_image(buf, phys_ram_base + bios_offset);
    if (ret != bios_size) {
    bios_error:
        fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
        exit(1);
    }

    /* VGA BIOS load */
    if (cirrus_vga_enabled) {
        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
    } else {
        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
    }
    ret = load_image(buf, phys_ram_base + vga_bios_offset);
    
    /* setup basic memory access */
    cpu_register_physical_memory(0xc0000, 0x10000, 
                                 vga_bios_offset | IO_MEM_ROM);

    /* map the last 128KB of the BIOS in ISA space */
    isa_bios_size = bios_size;
    if (isa_bios_size > (128 * 1024))
        isa_bios_size = 128 * 1024;
    cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size, 
                                 IO_MEM_UNASSIGNED);
    cpu_register_physical_memory(0x100000 - isa_bios_size, 
                                 isa_bios_size, 
                                 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
    /* map all the bios at the top of memory */
    cpu_register_physical_memory((uint32_t)(-bios_size), 
                                 bios_size, bios_offset | IO_MEM_ROM);
    
    bochs_bios_init();

    if (linux_boot) {
        uint8_t bootsect[512];
        uint8_t old_bootsect[512];

        if (bs_table[0] == NULL) {
            fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
            exit(1);
        }
        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME);
        ret = load_image(buf, bootsect);
        if (ret != sizeof(bootsect)) {
            fprintf(stderr, "qemu: could not load linux boot sector '%s'\n",
                    buf);
            exit(1);
        }

        if (bdrv_read(bs_table[0], 0, old_bootsect, 1) >= 0) {
            /* copy the MSDOS partition table */
            memcpy(bootsect + 0x1be, old_bootsect + 0x1be, 0x40);
        }

        bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));

        /* now we can load the kernel */
        ret = load_kernel(kernel_filename, 
                          phys_ram_base + KERNEL_LOAD_ADDR,
                          phys_ram_base + KERNEL_PARAMS_ADDR);
        if (ret < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n", 
                    kernel_filename);
            exit(1);
        }
        
        /* load initrd */
        initrd_size = 0;
        if (initrd_filename) {
            initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
            if (initrd_size < 0) {
                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 
                        initrd_filename);
                exit(1);
            }
        }
        if (initrd_size > 0) {
            stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
            stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
        }
        pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
                kernel_cmdline);
        stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F);
        stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
                KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR);
        /* loader type */
        stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01);
    }

    if (pci_enabled) {
        pci_bus = i440fx_init();
        piix3_init(pci_bus);
    } else {
        pci_bus = NULL;
    }

    /* init basic PC hardware */
    register_ioport_write(0x80, 1, 1, ioport80_write, NULL);

    register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);

    if (cirrus_vga_enabled) {
        if (pci_enabled) {
            pci_cirrus_vga_init(pci_bus, 
                                ds, phys_ram_base + ram_size, ram_size, 
                                vga_ram_size);
        } else {
            isa_cirrus_vga_init(ds, phys_ram_base + ram_size, ram_size, 
                                vga_ram_size);
        }
    } else {
        vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size, 
                       vga_ram_size);
    }

    rtc_state = rtc_init(0x70, 8);
    register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
    register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);

    register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
    register_ioport_write(0x92, 1, 1, ioport92_write, NULL);

    pic_init();
    pit = pit_init(0x40, 0);

    fd = serial_open_device();
    serial_init(0x3f8, 4, fd);

    if (pci_enabled) {
        for(i = 0; i < nb_nics; i++) {
            pci_ne2000_init(pci_bus, &nd_table[i]);
        }
        pci_piix3_ide_init(pci_bus, bs_table);
    } else {
        nb_nics1 = nb_nics;
        if (nb_nics1 > NE2000_NB_MAX)
            nb_nics1 = NE2000_NB_MAX;
        for(i = 0; i < nb_nics1; i++) {
            isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
        }

        for(i = 0; i < 2; i++) {
            isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
                         bs_table[2 * i], bs_table[2 * i + 1]);
        }
    }

    kbd_init();
    DMA_init(0);

#ifndef _WIN32
    if (audio_enabled) {
        /* no audio supported yet for win32 */
        AUD_init();
        SB16_init();
    }
#endif

    floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);

    cmos_init(ram_size, boot_device);

    /* must be done after all PCI devices are instanciated */
    /* XXX: should be done in the Bochs BIOS */
    if (pci_enabled) {
        pci_bios_init();
    }
}
Commit	Line	Data
80cabfad FB	1	/*
	2	* QEMU PC System Emulator
	3	*
	4	* Copyright (c) 2003-2004 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
80cabfad FB	24	#include "vl.h"
80cabfad FB	25
b41a2cd1 FB	26	/* output Bochs bios info messages */
	27	//#define DEBUG_BIOS
	28
80cabfad FB	29	#define BIOS_FILENAME "bios.bin"
80cabfad FB	30	#define VGABIOS_FILENAME "vgabios.bin"
de9258a8	31	#define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
80cabfad FB	32	#define LINUX_BOOT_FILENAME "linux_boot.bin"
	33
	34	#define KERNEL_LOAD_ADDR 0x00100000
	35	#define INITRD_LOAD_ADDR 0x00400000
	36	#define KERNEL_PARAMS_ADDR 0x00090000
	37	#define KERNEL_CMDLINE_ADDR 0x00099000
	38
	39	int speaker_data_on;
	40	int dummy_refresh_clock;
baca51fa	41	static fdctrl_t *floppy_controller;
b0a21b53	42	static RTCState *rtc_state;
ec844b96	43	static PITState *pit;
80cabfad	44
b41a2cd1	45	static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
80cabfad FB	46	{
	47	}
	48
f929aad6 FB	49	/* MSDOS compatibility mode FPU exception support */
	50	/* XXX: add IGNNE support */
	51	void cpu_set_ferr(CPUX86State *s)
	52	{
	53	pic_set_irq(13, 1);
	54	}
	55
	56	static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
	57	{
	58	pic_set_irq(13, 0);
	59	}
	60
28ab0e2e FB	61	/* TSC handling */
	62
	63	uint64_t cpu_get_tsc(CPUX86State *env)
	64	{
	65	return qemu_get_clock(vm_clock);
	66	}
	67
b0a21b53 FB	68	/* PC cmos mappings */
b0a21b53 FB	69
80cabfad	70	#define REG_EQUIPMENT_BYTE 0x14
b0a21b53 FB	71	#define REG_IBM_CENTURY_BYTE 0x32
	72	#define REG_IBM_PS2_CENTURY_BYTE 0x37
	73
	74
	75	static inline int to_bcd(RTCState *s, int a)
	76	{
	77	return ((a / 10) << 4) \| (a % 10);
	78	}
80cabfad	79
777428f2 FB	80	static int cmos_get_fd_drive_type(int fd0)
	81	{
	82	int val;
	83
	84	switch (fd0) {
	85	case 0:
	86	/* 1.44 Mb 3"5 drive */
	87	val = 4;
	88	break;
	89	case 1:
	90	/* 2.88 Mb 3"5 drive */
	91	val = 5;
	92	break;
	93	case 2:
	94	/* 1.2 Mb 5"5 drive */
	95	val = 2;
	96	break;
	97	default:
	98	val = 0;
	99	break;
	100	}
	101	return val;
	102	}
	103
80cabfad FB	104	static void cmos_init(int ram_size, int boot_device)
80cabfad FB	105	{
b0a21b53	106	RTCState *s = rtc_state;
80cabfad	107	int val;
b41a2cd1	108	int fd0, fd1, nb;
b0a21b53 FB	109	time_t ti;
	110	struct tm *tm;
	111
	112	/* set the CMOS date */
	113	time(&ti);
ee22c2f7 FB	114	if (rtc_utc)
	115	tm = gmtime(&ti);
	116	else
	117	tm = localtime(&ti);
b0a21b53 FB	118	rtc_set_date(s, tm);
	119
	120	val = to_bcd(s, (tm->tm_year / 100) + 19);
	121	rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
	122	rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);
80cabfad	123
b0a21b53	124	/* various important CMOS locations needed by PC/Bochs bios */
80cabfad FB	125
80cabfad FB	126	/* memory size */
333190eb FB	127	val = 640; /* base memory in K */
	128	rtc_set_memory(s, 0x15, val);
	129	rtc_set_memory(s, 0x16, val >> 8);
	130
80cabfad FB	131	val = (ram_size / 1024) - 1024;
	132	if (val > 65535)
	133	val = 65535;
b0a21b53 FB	134	rtc_set_memory(s, 0x17, val);
	135	rtc_set_memory(s, 0x18, val >> 8);
	136	rtc_set_memory(s, 0x30, val);
	137	rtc_set_memory(s, 0x31, val >> 8);
80cabfad FB	138
	139	val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
	140	if (val > 65535)
	141	val = 65535;
b0a21b53 FB	142	rtc_set_memory(s, 0x34, val);
b0a21b53 FB	143	rtc_set_memory(s, 0x35, val >> 8);
80cabfad FB	144
	145	switch(boot_device) {
	146	case 'a':
	147	case 'b':
b0a21b53	148	rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
80cabfad FB	149	break;
	150	default:
	151	case 'c':
b0a21b53	152	rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
80cabfad FB	153	break;
80cabfad FB	154	case 'd':
b0a21b53	155	rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
80cabfad FB	156	break;
80cabfad FB	157	}
80cabfad	158
b41a2cd1 FB	159	/* floppy type */
b41a2cd1 FB	160
baca51fa FB	161	fd0 = fdctrl_get_drive_type(floppy_controller, 0);
baca51fa FB	162	fd1 = fdctrl_get_drive_type(floppy_controller, 1);
80cabfad	163
777428f2	164	val = (cmos_get_fd_drive_type(fd0) << 4) \| cmos_get_fd_drive_type(fd1);
b0a21b53 FB	165	rtc_set_memory(s, 0x10, val);
	166
	167	val = 0;
b41a2cd1	168	nb = 0;
80cabfad FB	169	if (fd0 < 3)
	170	nb++;
	171	if (fd1 < 3)
	172	nb++;
	173	switch (nb) {
	174	case 0:
	175	break;
	176	case 1:
b0a21b53	177	val \|= 0x01; /* 1 drive, ready for boot */
80cabfad FB	178	break;
80cabfad FB	179	case 2:
b0a21b53	180	val \|= 0x41; /* 2 drives, ready for boot */
80cabfad FB	181	break;
80cabfad FB	182	}
b0a21b53 FB	183	val \|= 0x02; /* FPU is there */
	184	val \|= 0x04; /* PS/2 mouse installed */
	185	rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
	186
80cabfad FB	187	}
80cabfad FB	188
b41a2cd1	189	static void speaker_ioport_write(void *opaque, uint32_t addr, uint32_t val)
80cabfad FB	190	{
80cabfad FB	191	speaker_data_on = (val >> 1) & 1;
ec844b96	192	pit_set_gate(pit, 2, val & 1);
80cabfad FB	193	}
80cabfad FB	194
b41a2cd1	195	static uint32_t speaker_ioport_read(void *opaque, uint32_t addr)
80cabfad FB	196	{
80cabfad FB	197	int out;
ec844b96	198	out = pit_get_out(pit, 2, qemu_get_clock(vm_clock));
80cabfad	199	dummy_refresh_clock ^= 1;
ec844b96	200	return (speaker_data_on << 1) \| pit_get_gate(pit, 2) \| (out << 5) \|
80cabfad FB	201	(dummy_refresh_clock << 4);
	202	}
	203
e1a23744 FB	204	static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
	205	{
	206	cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1);
	207	/* XXX: bit 0 is fast reset */
	208	}
	209
	210	static uint32_t ioport92_read(void *opaque, uint32_t addr)
	211	{
	212	return ((cpu_single_env->a20_mask >> 20) & 1) << 1;
	213	}
	214
80cabfad FB	215	/***********************************************************/
	216	/* Bochs BIOS debug ports */
	217
b41a2cd1	218	void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
80cabfad	219	{
a2f659ee FB	220	static const char shutdown_str[8] = "Shutdown";
	221	static int shutdown_index = 0;
	222
80cabfad FB	223	switch(addr) {
	224	/* Bochs BIOS messages */
	225	case 0x400:
	226	case 0x401:
	227	fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
	228	exit(1);
	229	case 0x402:
	230	case 0x403:
	231	#ifdef DEBUG_BIOS
	232	fprintf(stderr, "%c", val);
	233	#endif
	234	break;
a2f659ee FB	235	case 0x8900:
	236	/* same as Bochs power off */
	237	if (val == shutdown_str[shutdown_index]) {
	238	shutdown_index++;
	239	if (shutdown_index == 8) {
	240	shutdown_index = 0;
	241	qemu_system_shutdown_request();
	242	}
	243	} else {
	244	shutdown_index = 0;
	245	}
	246	break;
80cabfad FB	247
	248	/* LGPL'ed VGA BIOS messages */
	249	case 0x501:
	250	case 0x502:
	251	fprintf(stderr, "VGA BIOS panic, line %d\n", val);
	252	exit(1);
	253	case 0x500:
	254	case 0x503:
	255	#ifdef DEBUG_BIOS
	256	fprintf(stderr, "%c", val);
	257	#endif
	258	break;
	259	}
	260	}
	261
	262	void bochs_bios_init(void)
	263	{
b41a2cd1 FB	264	register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
	265	register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
	266	register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
	267	register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
a2f659ee	268	register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
b41a2cd1 FB	269
	270	register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
	271	register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
	272	register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
	273	register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
80cabfad FB	274	}
	275
	276
	277	int load_kernel(const char filename, uint8_t addr,
	278	uint8_t *real_addr)
	279	{
	280	int fd, size;
	281	int setup_sects;
	282
	283	fd = open(filename, O_RDONLY);
	284	if (fd < 0)
	285	return -1;
	286
	287	/* load 16 bit code */
	288	if (read(fd, real_addr, 512) != 512)
	289	goto fail;
	290	setup_sects = real_addr[0x1F1];
	291	if (!setup_sects)
	292	setup_sects = 4;
	293	if (read(fd, real_addr + 512, setup_sects * 512) !=
	294	setup_sects * 512)
	295	goto fail;
	296
	297	/* load 32 bit code */
	298	size = read(fd, addr, 16 * 1024 * 1024);
	299	if (size < 0)
	300	goto fail;
	301	close(fd);
	302	return size;
	303	fail:
	304	close(fd);
	305	return -1;
	306	}
	307
b41a2cd1 FB	308	static const int ide_iobase[2] = { 0x1f0, 0x170 };
	309	static const int ide_iobase2[2] = { 0x3f6, 0x376 };
	310	static const int ide_irq[2] = { 14, 15 };
	311
	312	#define NE2000_NB_MAX 6
	313
	314	static uint32_t ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
	315	static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
	316
80cabfad FB	317	/* PC hardware initialisation */
	318	void pc_init(int ram_size, int vga_ram_size, int boot_device,
	319	DisplayState ds, const char *fd_filename, int snapshot,
	320	const char kernel_filename, const char kernel_cmdline,
	321	const char *initrd_filename)
	322	{
	323	char buf[1024];
b41a2cd1	324	int ret, linux_boot, initrd_size, i, nb_nics1, fd;
7587cf44 FB	325	unsigned long bios_offset, vga_bios_offset;
7587cf44 FB	326	int bios_size, isa_bios_size;
46e50e9d FB	327	PCIBus *pci_bus;
46e50e9d FB	328
80cabfad FB	329	linux_boot = (kernel_filename != NULL);
	330
	331	/* allocate RAM */
	332	cpu_register_physical_memory(0, ram_size, 0);
	333
	334	/* BIOS load */
7587cf44 FB	335	bios_offset = ram_size + vga_ram_size;
	336	vga_bios_offset = bios_offset + 256 * 1024;
	337
80cabfad	338	snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
7587cf44 FB	339	bios_size = get_image_size(buf);
	340	if (bios_size <= 0 \|\|
	341	(bios_size % 65536) != 0 \|\|
	342	bios_size > (256 * 1024)) {
	343	goto bios_error;
	344	}
	345	ret = load_image(buf, phys_ram_base + bios_offset);
	346	if (ret != bios_size) {
	347	bios_error:
80cabfad FB	348	fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
	349	exit(1);
	350	}
7587cf44	351
80cabfad	352	/* VGA BIOS load */
de9258a8 FB	353	if (cirrus_vga_enabled) {
	354	snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
	355	} else {
	356	snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
	357	}
7587cf44	358	ret = load_image(buf, phys_ram_base + vga_bios_offset);
80cabfad FB	359
80cabfad FB	360	/* setup basic memory access */
7587cf44 FB	361	cpu_register_physical_memory(0xc0000, 0x10000,
	362	vga_bios_offset \| IO_MEM_ROM);
	363
	364	/* map the last 128KB of the BIOS in ISA space */
	365	isa_bios_size = bios_size;
	366	if (isa_bios_size > (128 * 1024))
	367	isa_bios_size = 128 * 1024;
	368	cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
	369	IO_MEM_UNASSIGNED);
	370	cpu_register_physical_memory(0x100000 - isa_bios_size,
	371	isa_bios_size,
	372	(bios_offset + bios_size - isa_bios_size) \| IO_MEM_ROM);
	373	/* map all the bios at the top of memory */
	374	cpu_register_physical_memory((uint32_t)(-bios_size),
	375	bios_size, bios_offset \| IO_MEM_ROM);
80cabfad FB	376
	377	bochs_bios_init();
	378
	379	if (linux_boot) {
	380	uint8_t bootsect[512];
41b9be47	381	uint8_t old_bootsect[512];
80cabfad FB	382
	383	if (bs_table[0] == NULL) {
	384	fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
	385	exit(1);
	386	}
	387	snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME);
	388	ret = load_image(buf, bootsect);
	389	if (ret != sizeof(bootsect)) {
	390	fprintf(stderr, "qemu: could not load linux boot sector '%s'\n",
	391	buf);
	392	exit(1);
	393	}
	394
41b9be47 FB	395	if (bdrv_read(bs_table[0], 0, old_bootsect, 1) >= 0) {
	396	/* copy the MSDOS partition table */
	397	memcpy(bootsect + 0x1be, old_bootsect + 0x1be, 0x40);
	398	}
	399
80cabfad FB	400	bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
	401
	402	/* now we can load the kernel */
	403	ret = load_kernel(kernel_filename,
	404	phys_ram_base + KERNEL_LOAD_ADDR,
	405	phys_ram_base + KERNEL_PARAMS_ADDR);
	406	if (ret < 0) {
	407	fprintf(stderr, "qemu: could not load kernel '%s'\n",
	408	kernel_filename);
	409	exit(1);
	410	}
	411
	412	/* load initrd */
	413	initrd_size = 0;
	414	if (initrd_filename) {
	415	initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
	416	if (initrd_size < 0) {
	417	fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
	418	initrd_filename);
	419	exit(1);
	420	}
	421	}
	422	if (initrd_size > 0) {
	423	stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
	424	stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
	425	}
	426	pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
	427	kernel_cmdline);
	428	stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F);
	429	stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
	430	KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR);
	431	/* loader type */
	432	stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01);
	433	}
	434
69b91039	435	if (pci_enabled) {
46e50e9d FB	436	pci_bus = i440fx_init();
	437	piix3_init(pci_bus);
	438	} else {
	439	pci_bus = NULL;
69b91039 FB	440	}
69b91039 FB	441
80cabfad	442	/* init basic PC hardware */
b41a2cd1	443	register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
80cabfad	444
f929aad6 FB	445	register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
f929aad6 FB	446
1f04275e FB	447	if (cirrus_vga_enabled) {
1f04275e FB	448	if (pci_enabled) {
46e50e9d FB	449	pci_cirrus_vga_init(pci_bus,
46e50e9d FB	450	ds, phys_ram_base + ram_size, ram_size,
1f04275e FB	451	vga_ram_size);
	452	} else {
	453	isa_cirrus_vga_init(ds, phys_ram_base + ram_size, ram_size,
	454	vga_ram_size);
	455	}
	456	} else {
46e50e9d FB	457	vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size,
46e50e9d FB	458	vga_ram_size);
1f04275e	459	}
80cabfad	460
b0a21b53	461	rtc_state = rtc_init(0x70, 8);
b41a2cd1 FB	462	register_ioport_read(0x61, 1, 1, speaker_ioport_read, NULL);
b41a2cd1 FB	463	register_ioport_write(0x61, 1, 1, speaker_ioport_write, NULL);
80cabfad	464
e1a23744 FB	465	register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
	466	register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
	467
80cabfad	468	pic_init();
ec844b96	469	pit = pit_init(0x40, 0);
b41a2cd1 FB	470
	471	fd = serial_open_device();
	472	serial_init(0x3f8, 4, fd);
	473
69b91039 FB	474	if (pci_enabled) {
69b91039 FB	475	for(i = 0; i < nb_nics; i++) {
46e50e9d	476	pci_ne2000_init(pci_bus, &nd_table[i]);
69b91039	477	}
46e50e9d	478	pci_piix3_ide_init(pci_bus, bs_table);
69b91039 FB	479	} else {
	480	nb_nics1 = nb_nics;
	481	if (nb_nics1 > NE2000_NB_MAX)
	482	nb_nics1 = NE2000_NB_MAX;
	483	for(i = 0; i < nb_nics1; i++) {
	484	isa_ne2000_init(ne2000_io[i], ne2000_irq[i], &nd_table[i]);
	485	}
b41a2cd1	486
69b91039 FB	487	for(i = 0; i < 2; i++) {
	488	isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
	489	bs_table[2 * i], bs_table[2 * i + 1]);
	490	}
b41a2cd1	491	}
69b91039	492
80cabfad	493	kbd_init();
7c29d0c0	494	DMA_init(0);
67b915a5 FB	495
67b915a5 FB	496	#ifndef _WIN32
aaaa7df6 FB	497	if (audio_enabled) {
	498	/* no audio supported yet for win32 */
	499	AUD_init();
	500	SB16_init();
	501	}
67b915a5	502	#endif
80cabfad	503
baca51fa	504	floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
b41a2cd1 FB	505
b41a2cd1 FB	506	cmos_init(ram_size, boot_device);
69b91039 FB	507
	508	/* must be done after all PCI devices are instanciated */
	509	/* XXX: should be done in the Bochs BIOS */
	510	if (pci_enabled) {
	511	pci_bios_init();
	512	}
80cabfad	513	}