diff options
Diffstat (limited to 'hw/smbios/smbios_legacy.c')
| -rw-r--r-- | hw/smbios/smbios_legacy.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/hw/smbios/smbios_legacy.c b/hw/smbios/smbios_legacy.c new file mode 100644 index 0000000..21f143e --- /dev/null +++ b/hw/smbios/smbios_legacy.c @@ -0,0 +1,179 @@ +/* + * SMBIOS legacy support + * + * Copyright (C) 2009 Hewlett-Packard Development Company, L.P. + * Copyright (C) 2013 Red Hat, Inc. + * + * Authors: + * Alex Williamson <alex.williamson@hp.com> + * Markus Armbruster <armbru@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "qemu/bswap.h" +#include "hw/firmware/smbios.h" +#include "sysemu/sysemu.h" +#include "qemu/error-report.h" + +struct smbios_header { + uint16_t length; + uint8_t type; +} QEMU_PACKED; + +struct smbios_field { + struct smbios_header header; + uint8_t type; + uint16_t offset; + uint8_t data[]; +} QEMU_PACKED; + +struct smbios_table { + struct smbios_header header; + uint8_t data[]; +} QEMU_PACKED; + +#define SMBIOS_FIELD_ENTRY 0 +#define SMBIOS_TABLE_ENTRY 1 + +static uint8_t *smbios_entries; +static size_t smbios_entries_len; +GArray *usr_blobs_sizes; + +void smbios_add_usr_blob_size(size_t size) +{ + if (!usr_blobs_sizes) { + usr_blobs_sizes = g_array_new(false, false, sizeof(size_t)); + } + g_array_append_val(usr_blobs_sizes, size); +} + +static void smbios_add_field(int type, int offset, const void *data, size_t len) +{ + struct smbios_field *field; + + if (!smbios_entries) { + smbios_entries_len = sizeof(uint16_t); + smbios_entries = g_malloc0(smbios_entries_len); + } + smbios_entries = g_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_maybe_add_str(int type, int offset, const char *data) +{ + if (data) { + smbios_add_field(type, offset, data, strlen(data) + 1); + } +} + +static void smbios_build_type_0_fields(void) +{ + smbios_maybe_add_str(0, offsetof(struct smbios_type_0, vendor_str), + smbios_type0.vendor); + smbios_maybe_add_str(0, offsetof(struct smbios_type_0, bios_version_str), + smbios_type0.version); + smbios_maybe_add_str(0, offsetof(struct smbios_type_0, + bios_release_date_str), + smbios_type0.date); + if (smbios_type0.have_major_minor) { + smbios_add_field(0, offsetof(struct smbios_type_0, + system_bios_major_release), + &smbios_type0.major, 1); + smbios_add_field(0, offsetof(struct smbios_type_0, + system_bios_minor_release), + &smbios_type0.minor, 1); + } +} + +static void smbios_build_type_1_fields(void) +{ + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, manufacturer_str), + smbios_type1.manufacturer); + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, product_name_str), + smbios_type1.product); + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, version_str), + smbios_type1.version); + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, serial_number_str), + smbios_type1.serial); + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, sku_number_str), + smbios_type1.sku); + smbios_maybe_add_str(1, offsetof(struct smbios_type_1, family_str), + smbios_type1.family); + if (qemu_uuid_set) { + /* + * We don't encode the UUID in the "wire format" here because this + * function is for legacy mode and needs to keep the guest ABI, and + * because we don't know what's the SMBIOS version advertised by the + * BIOS. + */ + smbios_add_field(1, offsetof(struct smbios_type_1, uuid), + &qemu_uuid, 16); + } +} + +uint8_t *smbios_get_table_legacy(size_t *length) +{ + int i; + size_t usr_offset; + + /* complain if fields were given for types > 1 */ + if (find_next_bit(smbios_have_fields_bitmap, + SMBIOS_MAX_TYPE + 1, 2) < SMBIOS_MAX_TYPE + 1) { + error_report("can't process fields for smbios " + "types > 1 on machine versions < 2.1!"); + exit(1); + } + + if (test_bit(4, smbios_have_binfile_bitmap)) { + error_report("can't process table for smbios " + "type 4 on machine versions < 2.1!"); + exit(1); + } + + g_free(smbios_entries); + smbios_entries_len = sizeof(uint16_t); + smbios_entries = g_malloc0(smbios_entries_len); + + for (i = 0, usr_offset = 0; usr_blobs_sizes && i < usr_blobs_sizes->len; + i++) + { + struct smbios_table *table; + struct smbios_structure_header *header; + size_t size = g_array_index(usr_blobs_sizes, size_t, i); + + header = (struct smbios_structure_header *)(usr_blobs + usr_offset); + smbios_entries = g_realloc(smbios_entries, smbios_entries_len + + size + sizeof(*table)); + table = (struct smbios_table *)(smbios_entries + smbios_entries_len); + table->header.type = SMBIOS_TABLE_ENTRY; + table->header.length = cpu_to_le16(sizeof(*table) + size); + memcpy(table->data, header, size); + smbios_entries_len += sizeof(*table) + size; + (*(uint16_t *)smbios_entries) = + cpu_to_le16(le16_to_cpu(*(uint16_t *)smbios_entries) + 1); + usr_offset += size; + } + + smbios_build_type_0_fields(); + smbios_build_type_1_fields(); + smbios_validate_table(); + *length = smbios_entries_len; + return smbios_entries; +} |