[qemu.git] / hw / smbios.c

/*
 * SMBIOS Support
 *
 * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
 *
 * Authors:
 *  Alex Williamson <alex.williamson@hp.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#include "sysemu.h"
#include "smbios.h"
#include "loader.h"

/*
 * Structures shared with the BIOS
 */
struct smbios_header {
    uint16_t length;
    uint8_t type;
} __attribute__((__packed__));

struct smbios_field {
    struct smbios_header header;
    uint8_t type;
    uint16_t offset;
    uint8_t data[];
} __attribute__((__packed__));

struct smbios_table {
    struct smbios_header header;
    uint8_t data[];
} __attribute__((__packed__));

#define SMBIOS_FIELD_ENTRY 0
#define SMBIOS_TABLE_ENTRY 1


static uint8_t *smbios_entries;
static size_t smbios_entries_len;
static int smbios_type4_count = 0;

static void smbios_validate_table(void)
{
    if (smbios_type4_count && smbios_type4_count != smp_cpus) {
         fprintf(stderr,
                 "Number of SMBIOS Type 4 tables must match cpu count.\n");
        exit(1);
    }
}

uint8_t *smbios_get_table(size_t *length)
{
    smbios_validate_table();
    *length = smbios_entries_len;
    return smbios_entries;
}

/*
 * To avoid unresolvable overlaps in data, don't allow both
 * tables and fields for the same smbios type.
 */
static void smbios_check_collision(int type, int entry)
{
    uint16_t *num_entries = (uint16_t *)smbios_entries;
    struct smbios_header *header;
    char *p;
    int i;

    if (!num_entries)
        return;

    p = (char *)(num_entries + 1);

    for (i = 0; i < *num_entries; i++) {
        header = (struct smbios_header *)p;
        if (entry == SMBIOS_TABLE_ENTRY && header->type == SMBIOS_FIELD_ENTRY) {
            struct smbios_field *field = (void *)header;
            if (type == field->type) {
                fprintf(stderr, "SMBIOS type %d field already defined, "
                                "cannot add table\n", type);
                exit(1);
            }
        } else if (entry == SMBIOS_FIELD_ENTRY &&
                   header->type == SMBIOS_TABLE_ENTRY) {
            struct smbios_structure_header *table = (void *)(header + 1);
            if (type == table->type) {
                fprintf(stderr, "SMBIOS type %d table already defined, "
                                "cannot add field\n", type);
                exit(1);
            }
        }
        p += le16_to_cpu(header->length);
    }
}

void smbios_add_field(int type, int offset, int len, void *data)
{
    struct smbios_field *field;

    smbios_check_collision(type, SMBIOS_FIELD_ENTRY);

    if (!smbios_entries) {
        smbios_entries_len = sizeof(uint16_t);
        smbios_entries = qemu_mallocz(smbios_entries_len);
    }
    smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
                                                  sizeof(*field) + len);
    field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
    field->header.type = SMBIOS_FIELD_ENTRY;
    field->header.length = cpu_to_le16(sizeof(*field) + len);

    field->type = type;
    field->offset = cpu_to_le16(offset);
    memcpy(field->data, data, len);

    smbios_entries_len += sizeof(*field) + len;
    (*(uint16_t *)smbios_entries) =
            cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
}

static void smbios_build_type_0_fields(const char *t)
{
    char buf[1024];

    if (get_param_value(buf, sizeof(buf), "vendor", t))
        smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "version", t))
        smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "date", t))
        smbios_add_field(0, offsetof(struct smbios_type_0,
                                     bios_release_date_str),
                                     strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "release", t)) {
        int major, minor;
        sscanf(buf, "%d.%d", &major, &minor);
        smbios_add_field(0, offsetof(struct smbios_type_0,
                                     system_bios_major_release), 1, &major);
        smbios_add_field(0, offsetof(struct smbios_type_0,
                                     system_bios_minor_release), 1, &minor);
    }
}

static void smbios_build_type_1_fields(const char *t)
{
    char buf[1024];

    if (get_param_value(buf, sizeof(buf), "manufacturer", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "product", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "version", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, version_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "serial", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "uuid", t)) {
        if (qemu_uuid_parse(buf, qemu_uuid) != 0) {
            fprintf(stderr, "Invalid SMBIOS UUID string\n");
            exit(1);
        }
    }
    if (get_param_value(buf, sizeof(buf), "sku", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str),
                         strlen(buf) + 1, buf);
    if (get_param_value(buf, sizeof(buf), "family", t))
        smbios_add_field(1, offsetof(struct smbios_type_1, family_str),
                         strlen(buf) + 1, buf);
}

int smbios_entry_add(const char *t)
{
    char buf[1024];

    if (get_param_value(buf, sizeof(buf), "file", t)) {
        struct smbios_structure_header *header;
        struct smbios_table *table;
        int size = get_image_size(buf);

        if (size == -1 || size < sizeof(struct smbios_structure_header)) {
            fprintf(stderr, "Cannot read smbios file %s\n", buf);
            exit(1);
        }

        if (!smbios_entries) {
            smbios_entries_len = sizeof(uint16_t);
            smbios_entries = qemu_mallocz(smbios_entries_len);
        }

        smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
                                                      sizeof(*table) + size);
        table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
        table->header.type = SMBIOS_TABLE_ENTRY;
        table->header.length = cpu_to_le16(sizeof(*table) + size);

        if (load_image(buf, table->data) != size) {
            fprintf(stderr, "Failed to load smbios file %s", buf);
            exit(1);
        }

        header = (struct smbios_structure_header *)(table->data);
        smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
        if (header->type == 4) {
            smbios_type4_count++;
        }

        smbios_entries_len += sizeof(*table) + size;
        (*(uint16_t *)smbios_entries) =
                cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1);
        return 0;
    }

    if (get_param_value(buf, sizeof(buf), "type", t)) {
        unsigned long type = strtoul(buf, NULL, 0);
        switch (type) {
        case 0:
            smbios_build_type_0_fields(t);
            return 0;
        case 1:
            smbios_build_type_1_fields(t);
            return 0;
        default:
            fprintf(stderr, "Don't know how to build fields for SMBIOS type "
                    "%ld\n", type);
            exit(1);
        }
    }

    fprintf(stderr, "smbios: must specify type= or file=\n");
    return -1;
}
Commit	Line	Data
b6f6e3d3 AL	1	/*
	2	* SMBIOS Support
	3	*
	4	* Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
	5	*
	6	* Authors:
	7	* Alex Williamson <alex.williamson@hp.com>
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2. See
	10	* the COPYING file in the top-level directory.
	11	*
	12	*/
	13
	14	#include "sysemu.h"
	15	#include "smbios.h"
ca20cf32	16	#include "loader.h"
b6f6e3d3 AL	17
	18	/*
	19	* Structures shared with the BIOS
	20	*/
	21	struct smbios_header {
	22	uint16_t length;
	23	uint8_t type;
	24	} __attribute__((__packed__));
	25
	26	struct smbios_field {
	27	struct smbios_header header;
	28	uint8_t type;
	29	uint16_t offset;
	30	uint8_t data[];
	31	} __attribute__((__packed__));
	32
	33	struct smbios_table {
	34	struct smbios_header header;
	35	uint8_t data[];
	36	} __attribute__((__packed__));
	37
	38	#define SMBIOS_FIELD_ENTRY 0
	39	#define SMBIOS_TABLE_ENTRY 1
	40
	41
	42	static uint8_t *smbios_entries;
	43	static size_t smbios_entries_len;
09c0848e BK	44	static int smbios_type4_count = 0;
	45
	46	static void smbios_validate_table(void)
	47	{
	48	if (smbios_type4_count && smbios_type4_count != smp_cpus) {
	49	fprintf(stderr,
	50	"Number of SMBIOS Type 4 tables must match cpu count.\n");
	51	exit(1);
	52	}
	53	}
b6f6e3d3 AL	54
	55	uint8_t smbios_get_table(size_t length)
	56	{
09c0848e	57	smbios_validate_table();
b6f6e3d3 AL	58	*length = smbios_entries_len;
	59	return smbios_entries;
	60	}
	61
	62	/*
	63	* To avoid unresolvable overlaps in data, don't allow both
	64	* tables and fields for the same smbios type.
	65	*/
	66	static void smbios_check_collision(int type, int entry)
	67	{
	68	uint16_t num_entries = (uint16_t )smbios_entries;
	69	struct smbios_header *header;
	70	char *p;
	71	int i;
	72
	73	if (!num_entries)
	74	return;
	75
	76	p = (char *)(num_entries + 1);
	77
	78	for (i = 0; i < *num_entries; i++) {
	79	header = (struct smbios_header *)p;
	80	if (entry == SMBIOS_TABLE_ENTRY && header->type == SMBIOS_FIELD_ENTRY) {
	81	struct smbios_field field = (void )header;
	82	if (type == field->type) {
	83	fprintf(stderr, "SMBIOS type %d field already defined, "
	84	"cannot add table\n", type);
	85	exit(1);
	86	}
	87	} else if (entry == SMBIOS_FIELD_ENTRY &&
	88	header->type == SMBIOS_TABLE_ENTRY) {
	89	struct smbios_structure_header table = (void )(header + 1);
	90	if (type == table->type) {
	91	fprintf(stderr, "SMBIOS type %d table already defined, "
	92	"cannot add field\n", type);
	93	exit(1);
	94	}
	95	}
	96	p += le16_to_cpu(header->length);
	97	}
	98	}
	99
	100	void smbios_add_field(int type, int offset, int len, void *data)
	101	{
	102	struct smbios_field *field;
	103
	104	smbios_check_collision(type, SMBIOS_FIELD_ENTRY);
	105
	106	if (!smbios_entries) {
	107	smbios_entries_len = sizeof(uint16_t);
	108	smbios_entries = qemu_mallocz(smbios_entries_len);
	109	}
	110	smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
	111	sizeof(*field) + len);
	112	field = (struct smbios_field *)(smbios_entries + smbios_entries_len);
	113	field->header.type = SMBIOS_FIELD_ENTRY;
	114	field->header.length = cpu_to_le16(sizeof(*field) + len);
	115
	116	field->type = type;
	117	field->offset = cpu_to_le16(offset);
	118	memcpy(field->data, data, len);
	119
	120	smbios_entries_len += sizeof(*field) + len;
	121	((uint16_t )smbios_entries) =
122	cpu_to_le16(le16_to_cpu((uint16_t )smbios_entries) + 1);
123	}
124
125	static void smbios_build_type_0_fields(const char *t)
126	{
127	char buf[1024];
128
129	if (get_param_value(buf, sizeof(buf), "vendor", t))
130	smbios_add_field(0, offsetof(struct smbios_type_0, vendor_str),
131	strlen(buf) + 1, buf);
132	if (get_param_value(buf, sizeof(buf), "version", t))
133	smbios_add_field(0, offsetof(struct smbios_type_0, bios_version_str),
134	strlen(buf) + 1, buf);
135	if (get_param_value(buf, sizeof(buf), "date", t))
136	smbios_add_field(0, offsetof(struct smbios_type_0,
137	bios_release_date_str),
138	strlen(buf) + 1, buf);
139	if (get_param_value(buf, sizeof(buf), "release", t)) {
140	int major, minor;
141	sscanf(buf, "%d.%d", &major, &minor);
142	smbios_add_field(0, offsetof(struct smbios_type_0,
143	system_bios_major_release), 1, &major);
144	smbios_add_field(0, offsetof(struct smbios_type_0,
145	system_bios_minor_release), 1, &minor);
146	}
147	}
148
149	static void smbios_build_type_1_fields(const char *t)
150	{
151	char buf[1024];
152
153	if (get_param_value(buf, sizeof(buf), "manufacturer", t))
154	smbios_add_field(1, offsetof(struct smbios_type_1, manufacturer_str),
155	strlen(buf) + 1, buf);
156	if (get_param_value(buf, sizeof(buf), "product", t))
157	smbios_add_field(1, offsetof(struct smbios_type_1, product_name_str),
158	strlen(buf) + 1, buf);
159	if (get_param_value(buf, sizeof(buf), "version", t))
160	smbios_add_field(1, offsetof(struct smbios_type_1, version_str),
161	strlen(buf) + 1, buf);
162	if (get_param_value(buf, sizeof(buf), "serial", t))
163	smbios_add_field(1, offsetof(struct smbios_type_1, serial_number_str),
164	strlen(buf) + 1, buf);
165	if (get_param_value(buf, sizeof(buf), "uuid", t)) {
166	if (qemu_uuid_parse(buf, qemu_uuid) != 0) {
167	fprintf(stderr, "Invalid SMBIOS UUID string\n");
168	exit(1);
169	}
170	}
171	if (get_param_value(buf, sizeof(buf), "sku", t))
172	smbios_add_field(1, offsetof(struct smbios_type_1, sku_number_str),
173	strlen(buf) + 1, buf);
174	if (get_param_value(buf, sizeof(buf), "family", t))
175	smbios_add_field(1, offsetof(struct smbios_type_1, family_str),
176	strlen(buf) + 1, buf);
177	}
178
179	int smbios_entry_add(const char *t)
180	{
181	char buf[1024];
182
183	if (get_param_value(buf, sizeof(buf), "file", t)) {
184	struct smbios_structure_header *header;
185	struct smbios_table *table;
186	int size = get_image_size(buf);
187
09c0848e BK	188	if (size == -1 \|\| size < sizeof(struct smbios_structure_header)) {
09c0848e BK	189	fprintf(stderr, "Cannot read smbios file %s\n", buf);
b6f6e3d3 AL	190	exit(1);
	191	}
	192
	193	if (!smbios_entries) {
	194	smbios_entries_len = sizeof(uint16_t);
	195	smbios_entries = qemu_mallocz(smbios_entries_len);
	196	}
	197
	198	smbios_entries = qemu_realloc(smbios_entries, smbios_entries_len +
	199	sizeof(*table) + size);
	200	table = (struct smbios_table *)(smbios_entries + smbios_entries_len);
	201	table->header.type = SMBIOS_TABLE_ENTRY;
	202	table->header.length = cpu_to_le16(sizeof(*table) + size);
	203
	204	if (load_image(buf, table->data) != size) {
	205	fprintf(stderr, "Failed to load smbios file %s", buf);
	206	exit(1);
	207	}
	208
	209	header = (struct smbios_structure_header *)(table->data);
	210	smbios_check_collision(header->type, SMBIOS_TABLE_ENTRY);
09c0848e BK	211	if (header->type == 4) {
	212	smbios_type4_count++;
	213	}
b6f6e3d3 AL	214
	215	smbios_entries_len += sizeof(*table) + size;
	216	((uint16_t )smbios_entries) =
	217	cpu_to_le16(le16_to_cpu((uint16_t )smbios_entries) + 1);
	218	return 0;
	219	}
	220
	221	if (get_param_value(buf, sizeof(buf), "type", t)) {
	222	unsigned long type = strtoul(buf, NULL, 0);
	223	switch (type) {
	224	case 0:
	225	smbios_build_type_0_fields(t);
	226	return 0;
	227	case 1:
	228	smbios_build_type_1_fields(t);
	229	return 0;
	230	default:
	231	fprintf(stderr, "Don't know how to build fields for SMBIOS type "
	232	"%ld\n", type);
	233	exit(1);
	234	}
	235	}
	236
	237	fprintf(stderr, "smbios: must specify type= or file=\n");
	238	return -1;
	239	}