[qemu.git] / hw / fw_cfg.c

/*
 * QEMU Firmware configuration device emulation
 *
 * Copyright (c) 2008 Gleb Natapov
 *
 * 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 "sysemu.h"
#include "isa.h"
#include "fw_cfg.h"
#include "sysbus.h"

/* debug firmware config */
//#define DEBUG_FW_CFG

#ifdef DEBUG_FW_CFG
#define FW_CFG_DPRINTF(fmt, ...)                        \
    do { printf("FW_CFG: " fmt , ## __VA_ARGS__); } while (0)
#else
#define FW_CFG_DPRINTF(fmt, ...)
#endif

#define FW_CFG_SIZE 2

typedef struct FWCfgEntry {
    uint32_t len;
    uint8_t *data;
    void *callback_opaque;
    FWCfgCallback callback;
} FWCfgEntry;

struct FWCfgState {
    SysBusDevice busdev;
    uint32_t ctl_iobase, data_iobase;
    FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
    FWCfgFiles *files;
    uint16_t cur_entry;
    uint32_t cur_offset;
    Notifier machine_ready;
};

static void fw_cfg_write(FWCfgState *s, uint8_t value)
{
    int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
    FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];

    FW_CFG_DPRINTF("write %d\n", value);

    if (s->cur_entry & FW_CFG_WRITE_CHANNEL && s->cur_offset < e->len) {
        e->data[s->cur_offset++] = value;
        if (s->cur_offset == e->len) {
            e->callback(e->callback_opaque, e->data);
            s->cur_offset = 0;
        }
    }
}

static int fw_cfg_select(FWCfgState *s, uint16_t key)
{
    int ret;

    s->cur_offset = 0;
    if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
        s->cur_entry = FW_CFG_INVALID;
        ret = 0;
    } else {
        s->cur_entry = key;
        ret = 1;
    }

    FW_CFG_DPRINTF("select key %d (%sfound)\n", key, ret ? "" : "not ");

    return ret;
}

static uint8_t fw_cfg_read(FWCfgState *s)
{
    int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
    FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
    uint8_t ret;

    if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
        ret = 0;
    else
        ret = e->data[s->cur_offset++];

    FW_CFG_DPRINTF("read %d\n", ret);

    return ret;
}

static uint32_t fw_cfg_io_readb(void *opaque, uint32_t addr)
{
    return fw_cfg_read(opaque);
}

static void fw_cfg_io_writeb(void *opaque, uint32_t addr, uint32_t value)
{
    fw_cfg_write(opaque, (uint8_t)value);
}

static void fw_cfg_io_writew(void *opaque, uint32_t addr, uint32_t value)
{
    fw_cfg_select(opaque, (uint16_t)value);
}

static uint32_t fw_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
{
    return fw_cfg_read(opaque);
}

static void fw_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
                              uint32_t value)
{
    fw_cfg_write(opaque, (uint8_t)value);
}

static void fw_cfg_mem_writew(void *opaque, target_phys_addr_t addr,
                              uint32_t value)
{
    fw_cfg_select(opaque, (uint16_t)value);
}

static CPUReadMemoryFunc * const fw_cfg_ctl_mem_read[3] = {
    NULL,
    NULL,
    NULL,
};

static CPUWriteMemoryFunc * const fw_cfg_ctl_mem_write[3] = {
    NULL,
    fw_cfg_mem_writew,
    NULL,
};

static CPUReadMemoryFunc * const fw_cfg_data_mem_read[3] = {
    fw_cfg_mem_readb,
    NULL,
    NULL,
};

static CPUWriteMemoryFunc * const fw_cfg_data_mem_write[3] = {
    fw_cfg_mem_writeb,
    NULL,
    NULL,
};

static void fw_cfg_reset(DeviceState *d)
{
    FWCfgState *s = DO_UPCAST(FWCfgState, busdev.qdev, d);

    fw_cfg_select(s, 0);
}

/* Save restore 32 bit int as uint16_t
   This is a Big hack, but it is how the old state did it.
   Or we broke compatibility in the state, or we can't use struct tm
 */

static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size)
{
    uint32_t *v = pv;
    *v = qemu_get_be16(f);
    return 0;
}

static void put_unused(QEMUFile *f, void *pv, size_t size)
{
    fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n");
    fprintf(stderr, "This functions shouldn't be called.\n");
}

static const VMStateInfo vmstate_hack_uint32_as_uint16 = {
    .name = "int32_as_uint16",
    .get  = get_uint32_as_uint16,
    .put  = put_unused,
};

#define VMSTATE_UINT16_HACK(_f, _s, _t)                                    \
    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)


static bool is_version_1(void *opaque, int version_id)
{
    return version_id == 1;
}

static const VMStateDescription vmstate_fw_cfg = {
    .name = "fw_cfg",
    .version_id = 2,
    .minimum_version_id = 1,
    .minimum_version_id_old = 1,
    .fields      = (VMStateField []) {
        VMSTATE_UINT16(cur_entry, FWCfgState),
        VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1),
        VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
        VMSTATE_END_OF_LIST()
    }
};

int fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len)
{
    int arch = !!(key & FW_CFG_ARCH_LOCAL);

    key &= FW_CFG_ENTRY_MASK;

    if (key >= FW_CFG_MAX_ENTRY)
        return 0;

    s->entries[arch][key].data = data;
    s->entries[arch][key].len = len;

    return 1;
}

int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
{
    uint16_t *copy;

    copy = qemu_malloc(sizeof(value));
    *copy = cpu_to_le16(value);
    return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}

int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
{
    uint32_t *copy;

    copy = qemu_malloc(sizeof(value));
    *copy = cpu_to_le32(value);
    return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}

int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
{
    uint64_t *copy;

    copy = qemu_malloc(sizeof(value));
    *copy = cpu_to_le64(value);
    return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
}

int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
                        void *callback_opaque, uint8_t *data, size_t len)
{
    int arch = !!(key & FW_CFG_ARCH_LOCAL);

    if (!(key & FW_CFG_WRITE_CHANNEL))
        return 0;

    key &= FW_CFG_ENTRY_MASK;

    if (key >= FW_CFG_MAX_ENTRY || len > 65535)
        return 0;

    s->entries[arch][key].data = data;
    s->entries[arch][key].len = len;
    s->entries[arch][key].callback_opaque = callback_opaque;
    s->entries[arch][key].callback = callback;

    return 1;
}

int fw_cfg_add_file(FWCfgState *s,  const char *filename, uint8_t *data,
                    uint32_t len)
{
    int i, index;

    if (!s->files) {
        int dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS;
        s->files = qemu_mallocz(dsize);
        fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, (uint8_t*)s->files, dsize);
    }

    index = be32_to_cpu(s->files->count);
    if (index == FW_CFG_FILE_SLOTS) {
        fprintf(stderr, "fw_cfg: out of file slots\n");
        return 0;
    }

    fw_cfg_add_bytes(s, FW_CFG_FILE_FIRST + index, data, len);

    pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name),
            filename);
    for (i = 0; i < index; i++) {
        if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) {
            FW_CFG_DPRINTF("%s: skip duplicate: %s\n", __FUNCTION__,
                           s->files->f[index].name);
            return 1;
        }
    }

    s->files->f[index].size   = cpu_to_be32(len);
    s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index);
    FW_CFG_DPRINTF("%s: #%d: %s (%d bytes)\n", __FUNCTION__,
                   index, s->files->f[index].name, len);

    s->files->count = cpu_to_be32(index+1);
    return 1;
}

static void fw_cfg_machine_ready(struct Notifier* n)
{
    uint32_t len;
    FWCfgState *s = container_of(n, FWCfgState, machine_ready);
    char *bootindex = get_boot_devices_list(&len);

    fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
}

FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
                        target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
{
    DeviceState *dev;
    SysBusDevice *d;
    FWCfgState *s;

    dev = qdev_create(NULL, "fw_cfg");
    qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
    qdev_prop_set_uint32(dev, "data_iobase", data_port);
    qdev_init_nofail(dev);
    d = sysbus_from_qdev(dev);

    s = DO_UPCAST(FWCfgState, busdev.qdev, dev);

    if (ctl_addr) {
        sysbus_mmio_map(d, 0, ctl_addr);
    }
    if (data_addr) {
        sysbus_mmio_map(d, 1, data_addr);
    }
    fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (uint8_t *)"QEMU", 4);
    fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
    fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC));
    fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
    fw_cfg_add_i16(s, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
    fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);


    s->machine_ready.notify = fw_cfg_machine_ready;
    qemu_add_machine_init_done_notifier(&s->machine_ready);

    return s;
}

static int fw_cfg_init1(SysBusDevice *dev)
{
    FWCfgState *s = FROM_SYSBUS(FWCfgState, dev);
    int io_ctl_memory, io_data_memory;

    io_ctl_memory = cpu_register_io_memory(fw_cfg_ctl_mem_read,
                                           fw_cfg_ctl_mem_write, s,
                                           DEVICE_NATIVE_ENDIAN);
    sysbus_init_mmio(dev, FW_CFG_SIZE, io_ctl_memory);

    io_data_memory = cpu_register_io_memory(fw_cfg_data_mem_read,
                                            fw_cfg_data_mem_write, s,
                                            DEVICE_NATIVE_ENDIAN);
    sysbus_init_mmio(dev, FW_CFG_SIZE, io_data_memory);

    if (s->ctl_iobase) {
        register_ioport_write(s->ctl_iobase, 2, 2, fw_cfg_io_writew, s);
    }
    if (s->data_iobase) {
        register_ioport_read(s->data_iobase, 1, 1, fw_cfg_io_readb, s);
        register_ioport_write(s->data_iobase, 1, 1, fw_cfg_io_writeb, s);
    }
    return 0;
}

static SysBusDeviceInfo fw_cfg_info = {
    .init = fw_cfg_init1,
    .qdev.name = "fw_cfg",
    .qdev.size = sizeof(FWCfgState),
    .qdev.vmsd = &vmstate_fw_cfg,
    .qdev.reset = fw_cfg_reset,
    .qdev.no_user = 1,
    .qdev.props = (Property[]) {
        DEFINE_PROP_HEX32("ctl_iobase", FWCfgState, ctl_iobase, -1),
        DEFINE_PROP_HEX32("data_iobase", FWCfgState, data_iobase, -1),
        DEFINE_PROP_END_OF_LIST(),
    },
};

static void fw_cfg_register_devices(void)
{
    sysbus_register_withprop(&fw_cfg_info);
}

device_init(fw_cfg_register_devices)
Commit	Line	Data
3cce6243 BS	1	/*
	2	* QEMU Firmware configuration device emulation
	3	*
	4	* Copyright (c) 2008 Gleb Natapov
	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	*/
	24	#include "hw.h"
084a197a	25	#include "sysemu.h"
3cce6243 BS	26	#include "isa.h"
3cce6243 BS	27	#include "fw_cfg.h"
3a5c16fc	28	#include "sysbus.h"
3cce6243 BS	29
	30	/* debug firmware config */
	31	//#define DEBUG_FW_CFG
	32
	33	#ifdef DEBUG_FW_CFG
001faf32 BS	34	#define FW_CFG_DPRINTF(fmt, ...) \
001faf32 BS	35	do { printf("FW_CFG: " fmt , ## __VA_ARGS__); } while (0)
3cce6243	36	#else
001faf32	37	#define FW_CFG_DPRINTF(fmt, ...)
3cce6243 BS	38	#endif
	39
	40	#define FW_CFG_SIZE 2
	41
b96ae2da	42	typedef struct FWCfgEntry {
ff06108b	43	uint32_t len;
3cce6243 BS	44	uint8_t *data;
	45	void *callback_opaque;
	46	FWCfgCallback callback;
	47	} FWCfgEntry;
	48
b96ae2da	49	struct FWCfgState {
3a5c16fc BS	50	SysBusDevice busdev;
3a5c16fc BS	51	uint32_t ctl_iobase, data_iobase;
3cce6243	52	FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
abe147e0	53	FWCfgFiles *files;
3cce6243	54	uint16_t cur_entry;
ff06108b	55	uint32_t cur_offset;
962630f2	56	Notifier machine_ready;
c2b5bda4	57	};
3cce6243 BS	58
	59	static void fw_cfg_write(FWCfgState *s, uint8_t value)
	60	{
	61	int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
	62	FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
	63
	64	FW_CFG_DPRINTF("write %d\n", value);
	65
	66	if (s->cur_entry & FW_CFG_WRITE_CHANNEL && s->cur_offset < e->len) {
	67	e->data[s->cur_offset++] = value;
	68	if (s->cur_offset == e->len) {
	69	e->callback(e->callback_opaque, e->data);
	70	s->cur_offset = 0;
	71	}
	72	}
	73	}
	74
	75	static int fw_cfg_select(FWCfgState *s, uint16_t key)
	76	{
	77	int ret;
	78
	79	s->cur_offset = 0;
	80	if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
	81	s->cur_entry = FW_CFG_INVALID;
	82	ret = 0;
	83	} else {
	84	s->cur_entry = key;
	85	ret = 1;
	86	}
	87
	88	FW_CFG_DPRINTF("select key %d (%sfound)\n", key, ret ? "" : "not ");
	89
	90	return ret;
	91	}
	92
	93	static uint8_t fw_cfg_read(FWCfgState *s)
	94	{
	95	int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
	96	FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK];
	97	uint8_t ret;
	98
	99	if (s->cur_entry == FW_CFG_INVALID \|\| !e->data \|\| s->cur_offset >= e->len)
	100	ret = 0;
	101	else
	102	ret = e->data[s->cur_offset++];
	103
	104	FW_CFG_DPRINTF("read %d\n", ret);
	105
	106	return ret;
	107	}
	108
	109	static uint32_t fw_cfg_io_readb(void *opaque, uint32_t addr)
	110	{
	111	return fw_cfg_read(opaque);
	112	}
	113
	114	static void fw_cfg_io_writeb(void *opaque, uint32_t addr, uint32_t value)
	115	{
7442511c	116	fw_cfg_write(opaque, (uint8_t)value);
3cce6243 BS	117	}
	118
	119	static void fw_cfg_io_writew(void *opaque, uint32_t addr, uint32_t value)
	120	{
	121	fw_cfg_select(opaque, (uint16_t)value);
	122	}
	123
c227f099	124	static uint32_t fw_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
3cce6243 BS	125	{
	126	return fw_cfg_read(opaque);
	127	}
	128
c227f099	129	static void fw_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
3cce6243 BS	130	uint32_t value)
3cce6243 BS	131	{
7442511c	132	fw_cfg_write(opaque, (uint8_t)value);
3cce6243 BS	133	}
3cce6243 BS	134
c227f099	135	static void fw_cfg_mem_writew(void *opaque, target_phys_addr_t addr,
3cce6243 BS	136	uint32_t value)
	137	{
	138	fw_cfg_select(opaque, (uint16_t)value);
	139	}
	140
d60efc6b	141	static CPUReadMemoryFunc * const fw_cfg_ctl_mem_read[3] = {
3cce6243 BS	142	NULL,
	143	NULL,
	144	NULL,
	145	};
	146
d60efc6b	147	static CPUWriteMemoryFunc * const fw_cfg_ctl_mem_write[3] = {
3cce6243 BS	148	NULL,
	149	fw_cfg_mem_writew,
	150	NULL,
	151	};
	152
d60efc6b	153	static CPUReadMemoryFunc * const fw_cfg_data_mem_read[3] = {
3cce6243 BS	154	fw_cfg_mem_readb,
	155	NULL,
	156	NULL,
	157	};
	158
d60efc6b	159	static CPUWriteMemoryFunc * const fw_cfg_data_mem_write[3] = {
3cce6243 BS	160	fw_cfg_mem_writeb,
	161	NULL,
	162	NULL,
	163	};
	164
3a5c16fc	165	static void fw_cfg_reset(DeviceState *d)
3cce6243	166	{
3a5c16fc	167	FWCfgState *s = DO_UPCAST(FWCfgState, busdev.qdev, d);
3cce6243 BS	168
	169	fw_cfg_select(s, 0);
	170	}
	171
ff06108b JQ	172	/* Save restore 32 bit int as uint16_t
	173	This is a Big hack, but it is how the old state did it.
	174	Or we broke compatibility in the state, or we can't use struct tm
	175	*/
	176
	177	static int get_uint32_as_uint16(QEMUFile f, void pv, size_t size)
	178	{
	179	uint32_t *v = pv;
	180	*v = qemu_get_be16(f);
	181	return 0;
	182	}
	183
	184	static void put_unused(QEMUFile f, void pv, size_t size)
	185	{
66c80e75	186	fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n");
ff06108b JQ	187	fprintf(stderr, "This functions shouldn't be called.\n");
	188	}
	189
d05ac8fa	190	static const VMStateInfo vmstate_hack_uint32_as_uint16 = {
ff06108b JQ	191	.name = "int32_as_uint16",
	192	.get = get_uint32_as_uint16,
	193	.put = put_unused,
	194	};
	195
	196	#define VMSTATE_UINT16_HACK(_f, _s, _t) \
	197	VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)
	198
	199
	200	static bool is_version_1(void *opaque, int version_id)
	201	{
	202	return version_id == 1;
	203	}
	204
7d2edd40 JQ	205	static const VMStateDescription vmstate_fw_cfg = {
7d2edd40 JQ	206	.name = "fw_cfg",
ff06108b	207	.version_id = 2,
7d2edd40 JQ	208	.minimum_version_id = 1,
	209	.minimum_version_id_old = 1,
	210	.fields = (VMStateField []) {
	211	VMSTATE_UINT16(cur_entry, FWCfgState),
ff06108b JQ	212	VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1),
ff06108b JQ	213	VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
7d2edd40 JQ	214	VMSTATE_END_OF_LIST()
	215	}
	216	};
3cce6243	217
c2b5bda4	218	int fw_cfg_add_bytes(FWCfgState s, uint16_t key, uint8_t data, uint32_t len)
3cce6243	219	{
3cce6243 BS	220	int arch = !!(key & FW_CFG_ARCH_LOCAL);
	221
	222	key &= FW_CFG_ENTRY_MASK;
	223
	224	if (key >= FW_CFG_MAX_ENTRY)
	225	return 0;
	226
	227	s->entries[arch][key].data = data;
	228	s->entries[arch][key].len = len;
	229
	230	return 1;
	231	}
	232
c2b5bda4	233	int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
3cce6243 BS	234	{
	235	uint16_t *copy;
	236
	237	copy = qemu_malloc(sizeof(value));
3cce6243	238	*copy = cpu_to_le16(value);
c2b5bda4	239	return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
3cce6243 BS	240	}
3cce6243 BS	241
c2b5bda4	242	int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
3cce6243 BS	243	{
	244	uint32_t *copy;
	245
	246	copy = qemu_malloc(sizeof(value));
3cce6243	247	*copy = cpu_to_le32(value);
c2b5bda4	248	return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
3cce6243 BS	249	}
3cce6243 BS	250
c2b5bda4	251	int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
3cce6243 BS	252	{
	253	uint64_t *copy;
	254
	255	copy = qemu_malloc(sizeof(value));
3cce6243	256	*copy = cpu_to_le64(value);
c2b5bda4	257	return fw_cfg_add_bytes(s, key, (uint8_t *)copy, sizeof(value));
3cce6243 BS	258	}
3cce6243 BS	259
c2b5bda4	260	int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
3cce6243 BS	261	void callback_opaque, uint8_t data, size_t len)
3cce6243 BS	262	{
3cce6243 BS	263	int arch = !!(key & FW_CFG_ARCH_LOCAL);
3cce6243 BS	264
85df0de4 BS	265	if (!(key & FW_CFG_WRITE_CHANNEL))
	266	return 0;
	267
3cce6243 BS	268	key &= FW_CFG_ENTRY_MASK;
3cce6243 BS	269
85df0de4	270	if (key >= FW_CFG_MAX_ENTRY \|\| len > 65535)
3cce6243 BS	271	return 0;
	272
	273	s->entries[arch][key].data = data;
	274	s->entries[arch][key].len = len;
	275	s->entries[arch][key].callback_opaque = callback_opaque;
	276	s->entries[arch][key].callback = callback;
	277
	278	return 1;
	279	}
	280
de1f34cb GN	281	int fw_cfg_add_file(FWCfgState s, const char filename, uint8_t *data,
de1f34cb GN	282	uint32_t len)
abe147e0	283	{
de9352bc	284	int i, index;
abe147e0 GH	285
	286	if (!s->files) {
	287	int dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS;
	288	s->files = qemu_mallocz(dsize);
	289	fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, (uint8_t*)s->files, dsize);
	290	}
	291
	292	index = be32_to_cpu(s->files->count);
	293	if (index == FW_CFG_FILE_SLOTS) {
	294	fprintf(stderr, "fw_cfg: out of file slots\n");
	295	return 0;
	296	}
	297
	298	fw_cfg_add_bytes(s, FW_CFG_FILE_FIRST + index, data, len);
	299
de1f34cb GN	300	pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name),
de1f34cb GN	301	filename);
de9352bc GH	302	for (i = 0; i < index; i++) {
	303	if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) {
	304	FW_CFG_DPRINTF("%s: skip duplicate: %s\n", __FUNCTION__,
	305	s->files->f[index].name);
	306	return 1;
	307	}
abe147e0	308	}
de9352bc	309
abe147e0 GH	310	s->files->f[index].size = cpu_to_be32(len);
	311	s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index);
	312	FW_CFG_DPRINTF("%s: #%d: %s (%d bytes)\n", __FUNCTION__,
	313	index, s->files->f[index].name, len);
	314
	315	s->files->count = cpu_to_be32(index+1);
	316	return 1;
	317	}
	318
962630f2 GN	319	static void fw_cfg_machine_ready(struct Notifier* n)
	320	{
	321	uint32_t len;
	322	FWCfgState *s = container_of(n, FWCfgState, machine_ready);
	323	char *bootindex = get_boot_devices_list(&len);
	324
	325	fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
	326	}
	327
c2b5bda4 GH	328	FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
c2b5bda4 GH	329	target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
3cce6243	330	{
3a5c16fc BS	331	DeviceState *dev;
3a5c16fc BS	332	SysBusDevice *d;
3cce6243	333	FWCfgState *s;
3cce6243	334
3a5c16fc BS	335	dev = qdev_create(NULL, "fw_cfg");
	336	qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
	337	qdev_prop_set_uint32(dev, "data_iobase", data_port);
	338	qdev_init_nofail(dev);
	339	d = sysbus_from_qdev(dev);
	340
	341	s = DO_UPCAST(FWCfgState, busdev.qdev, dev);
3cce6243	342
3cce6243	343	if (ctl_addr) {
3a5c16fc	344	sysbus_mmio_map(d, 0, ctl_addr);
3cce6243 BS	345	}
3cce6243 BS	346	if (data_addr) {
3a5c16fc	347	sysbus_mmio_map(d, 1, data_addr);
3cce6243 BS	348	}
3cce6243 BS	349	fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (uint8_t *)"QEMU", 4);
084a197a	350	fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
993fbfdb	351	fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC));
905fdcb5	352	fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
6be68d7e	353	fw_cfg_add_i16(s, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
95387491	354	fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
905fdcb5	355
962630f2 GN	356
	357	s->machine_ready.notify = fw_cfg_machine_ready;
	358	qemu_add_machine_init_done_notifier(&s->machine_ready);
	359
3cce6243 BS	360	return s;
3cce6243 BS	361	}
3a5c16fc BS	362
	363	static int fw_cfg_init1(SysBusDevice *dev)
	364	{
	365	FWCfgState *s = FROM_SYSBUS(FWCfgState, dev);
	366	int io_ctl_memory, io_data_memory;
	367
	368	io_ctl_memory = cpu_register_io_memory(fw_cfg_ctl_mem_read,
2507c12a AG	369	fw_cfg_ctl_mem_write, s,
2507c12a AG	370	DEVICE_NATIVE_ENDIAN);
3a5c16fc BS	371	sysbus_init_mmio(dev, FW_CFG_SIZE, io_ctl_memory);
	372
	373	io_data_memory = cpu_register_io_memory(fw_cfg_data_mem_read,
2507c12a AG	374	fw_cfg_data_mem_write, s,
2507c12a AG	375	DEVICE_NATIVE_ENDIAN);
3a5c16fc BS	376	sysbus_init_mmio(dev, FW_CFG_SIZE, io_data_memory);
	377
	378	if (s->ctl_iobase) {
	379	register_ioport_write(s->ctl_iobase, 2, 2, fw_cfg_io_writew, s);
	380	}
	381	if (s->data_iobase) {
	382	register_ioport_read(s->data_iobase, 1, 1, fw_cfg_io_readb, s);
	383	register_ioport_write(s->data_iobase, 1, 1, fw_cfg_io_writeb, s);
	384	}
	385	return 0;
	386	}
	387
	388	static SysBusDeviceInfo fw_cfg_info = {
	389	.init = fw_cfg_init1,
	390	.qdev.name = "fw_cfg",
	391	.qdev.size = sizeof(FWCfgState),
	392	.qdev.vmsd = &vmstate_fw_cfg,
	393	.qdev.reset = fw_cfg_reset,
	394	.qdev.no_user = 1,
	395	.qdev.props = (Property[]) {
	396	DEFINE_PROP_HEX32("ctl_iobase", FWCfgState, ctl_iobase, -1),
	397	DEFINE_PROP_HEX32("data_iobase", FWCfgState, data_iobase, -1),
	398	DEFINE_PROP_END_OF_LIST(),
	399	},
	400	};
	401
	402	static void fw_cfg_register_devices(void)
	403	{
	404	sysbus_register_withprop(&fw_cfg_info);
	405	}
	406
	407	device_init(fw_cfg_register_devices)