580 lines
15 KiB
C
580 lines
15 KiB
C
/*-
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* Copyright (c) 2005-2009 Jung-uk Kim <jkim@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <sys/endian.h>
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#define PTOV(x) ptov(x)
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/* Only enable 64-bit entry point if it makes sense */
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#if __SIZEOF_POINTER__ > 4
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#define HAS_SMBV3 1
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#endif
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/*
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* Detect SMBIOS and export information about the SMBIOS into the
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* environment.
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*
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* System Management BIOS Reference Specification, v2.6 Final
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* http://www.dmtf.org/standards/published_documents/DSP0134_2.6.0.pdf
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*/
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/*
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* 2.1.1 SMBIOS Structure Table Entry Point
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*
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* "On non-EFI systems, the SMBIOS Entry Point structure, described below, can
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* be located by application software by searching for the anchor-string on
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* paragraph (16-byte) boundaries within the physical memory address range
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* 000F0000h to 000FFFFFh. This entry point encapsulates an intermediate anchor
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* string that is used by some existing DMI browsers."
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*/
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#define SMBIOS_START 0xf0000
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#define SMBIOS_LENGTH 0x10000
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#define SMBIOS_STEP 0x10
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#define SMBIOS_SIG "_SM_"
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#define SMBIOS3_SIG "_SM3_"
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#define SMBIOS_DMI_SIG "_DMI_"
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#define SMBIOS_GET8(base, off) (*(uint8_t *)((base) + (off)))
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#define SMBIOS_GET16(base, off) (*(uint16_t *)((base) + (off)))
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#define SMBIOS_GET32(base, off) (*(uint32_t *)((base) + (off)))
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#define SMBIOS_GET64(base, off) (*(uint64_t *)((base) + (off)))
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#define SMBIOS_GETLEN(base) SMBIOS_GET8(base, 0x01)
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#define SMBIOS_GETSTR(base) ((base) + SMBIOS_GETLEN(base))
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struct smbios_attr {
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int probed;
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caddr_t addr;
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size_t length;
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size_t count;
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int major;
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int minor;
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int ver;
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const char* bios_vendor;
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const char* maker;
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const char* product;
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uint32_t enabled_memory;
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uint32_t old_enabled_memory;
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uint8_t enabled_sockets;
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uint8_t populated_sockets;
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};
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static struct smbios_attr smbios;
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#ifdef HAS_SMBV3
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static int isv3;
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#endif
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static uint8_t
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smbios_checksum(const caddr_t addr, const uint8_t len)
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{
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uint8_t sum;
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int i;
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for (sum = 0, i = 0; i < len; i++)
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sum += SMBIOS_GET8(addr, i);
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return (sum);
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}
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static caddr_t
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smbios_sigsearch(const caddr_t addr, const uint32_t len)
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{
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caddr_t cp;
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/* Search on 16-byte boundaries. */
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for (cp = addr; cp < addr + len; cp += SMBIOS_STEP) {
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/* v2.1, 32-bit Entry point */
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if (strncmp(cp, SMBIOS_SIG, sizeof(SMBIOS_SIG) - 1) == 0 &&
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smbios_checksum(cp, SMBIOS_GET8(cp, 0x05)) == 0 &&
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strncmp(cp + 0x10, SMBIOS_DMI_SIG, 5) == 0 &&
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smbios_checksum(cp + 0x10, 0x0f) == 0)
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return (cp);
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#ifdef HAS_SMBV3
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/* v3.0, 64-bit Entry point */
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if (strncmp(cp, SMBIOS3_SIG, sizeof(SMBIOS3_SIG) - 1) == 0 &&
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smbios_checksum(cp, SMBIOS_GET8(cp, 0x06)) == 0) {
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isv3 = 1;
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return (cp);
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}
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#endif
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}
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return (NULL);
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}
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static const char*
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smbios_getstring(caddr_t addr, const int offset)
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{
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caddr_t cp;
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int i, idx;
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idx = SMBIOS_GET8(addr, offset);
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if (idx != 0) {
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cp = SMBIOS_GETSTR(addr);
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for (i = 1; i < idx; i++)
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cp += strlen(cp) + 1;
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return cp;
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}
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return (NULL);
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}
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static void
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smbios_setenv(const char *name, caddr_t addr, const int offset)
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{
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const char* val;
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val = smbios_getstring(addr, offset);
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if (val != NULL)
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setenv(name, val, 1);
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}
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#ifdef SMBIOS_SERIAL_NUMBERS
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#define UUID_SIZE 16
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#define UUID_TYPE uint32_t
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#define UUID_STEP sizeof(UUID_TYPE)
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#define UUID_ALL_BITS (UUID_SIZE / UUID_STEP)
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#define UUID_GET(base, off) (*(UUID_TYPE *)((base) + (off)))
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static void
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smbios_setuuid(const char *name, const caddr_t addr, const int ver)
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{
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char uuid[37];
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int byteorder, i, ones, zeros;
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UUID_TYPE n;
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uint32_t f1;
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uint16_t f2, f3;
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for (i = 0, ones = 0, zeros = 0; i < UUID_SIZE; i += UUID_STEP) {
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n = UUID_GET(addr, i) + 1;
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if (zeros == 0 && n == 0)
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ones++;
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else if (ones == 0 && n == 1)
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zeros++;
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else
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break;
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}
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if (ones != UUID_ALL_BITS && zeros != UUID_ALL_BITS) {
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/*
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* 3.3.2.1 System UUID
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*
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* "Although RFC 4122 recommends network byte order for all
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* fields, the PC industry (including the ACPI, UEFI, and
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* Microsoft specifications) has consistently used
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* little-endian byte encoding for the first three fields:
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* time_low, time_mid, time_hi_and_version. The same encoding,
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* also known as wire format, should also be used for the
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* SMBIOS representation of the UUID."
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*
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* Note: We use network byte order for backward compatibility
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* unless SMBIOS version is 2.6+ or little-endian is forced.
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*/
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#if defined(SMBIOS_LITTLE_ENDIAN_UUID)
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byteorder = LITTLE_ENDIAN;
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#elif defined(SMBIOS_NETWORK_ENDIAN_UUID)
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byteorder = BIG_ENDIAN;
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#else
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byteorder = ver < 0x0206 ? BIG_ENDIAN : LITTLE_ENDIAN;
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#endif
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if (byteorder != LITTLE_ENDIAN) {
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f1 = ntohl(SMBIOS_GET32(addr, 0));
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f2 = ntohs(SMBIOS_GET16(addr, 4));
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f3 = ntohs(SMBIOS_GET16(addr, 6));
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} else {
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f1 = le32toh(SMBIOS_GET32(addr, 0));
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f2 = le16toh(SMBIOS_GET16(addr, 4));
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f3 = le16toh(SMBIOS_GET16(addr, 6));
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}
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sprintf(uuid,
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"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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f1, f2, f3, SMBIOS_GET8(addr, 8), SMBIOS_GET8(addr, 9),
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SMBIOS_GET8(addr, 10), SMBIOS_GET8(addr, 11),
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SMBIOS_GET8(addr, 12), SMBIOS_GET8(addr, 13),
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SMBIOS_GET8(addr, 14), SMBIOS_GET8(addr, 15));
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setenv(name, uuid, 1);
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}
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}
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#undef UUID_SIZE
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#undef UUID_TYPE
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#undef UUID_STEP
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#undef UUID_ALL_BITS
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#undef UUID_GET
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#endif
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static const char *
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smbios_parse_chassis_type(caddr_t addr)
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{
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int type;
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type = SMBIOS_GET8(addr, 0x5);
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switch (type) {
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case 0x1:
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return ("Other");
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case 0x2:
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return ("Unknown");
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case 0x3:
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return ("Desktop");
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case 0x4:
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return ("Low Profile Desktop");
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case 0x5:
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return ("Pizza Box");
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case 0x6:
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return ("Mini Tower");
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case 0x7:
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return ("Tower");
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case 0x8:
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return ("Portable");
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case 0x9:
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return ("Laptop");
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case 0xA:
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return ("Notebook");
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case 0xB:
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return ("Hand Held");
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case 0xC:
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return ("Docking Station");
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case 0xD:
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return ("All in One");
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case 0xE:
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return ("Sub Notebook");
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case 0xF:
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return ("Lunch Box");
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case 0x10:
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return ("Space-saving");
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case 0x11:
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return ("Main Server Chassis");
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case 0x12:
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return ("Expansion Chassis");
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case 0x13:
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return ("SubChassis");
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case 0x14:
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return ("Bus Expansion Chassis");
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case 0x15:
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return ("Peripheral Chassis");
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case 0x16:
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return ("RAID Chassis");
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case 0x17:
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return ("Rack Mount Chassis");
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case 0x18:
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return ("Sealed-case PC");
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case 0x19:
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return ("Multi-system chassis");
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case 0x1A:
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return ("Compact PCI");
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case 0x1B:
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return ("Advanced TCA");
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case 0x1C:
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return ("Blade");
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case 0x1D:
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return ("Blade Enclosure");
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case 0x1E:
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return ("Tablet");
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case 0x1F:
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return ("Convertible");
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case 0x20:
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return ("Detachable");
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case 0x21:
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return ("IoT Gateway");
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case 0x22:
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return ("Embedded PC");
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case 0x23:
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return ("Mini PC");
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case 0x24:
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return ("Stick PC");
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}
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return ("Undefined");
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}
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static caddr_t
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smbios_parse_table(const caddr_t addr)
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{
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caddr_t cp;
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int proc, size, osize, type;
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uint8_t bios_minor, bios_major;
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char buf[16];
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type = SMBIOS_GET8(addr, 0); /* 3.1.2 Structure Header Format */
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switch(type) {
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case 0: /* 3.3.1 BIOS Information (Type 0) */
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smbios_setenv("smbios.bios.vendor", addr, 0x04);
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smbios_setenv("smbios.bios.version", addr, 0x05);
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smbios_setenv("smbios.bios.reldate", addr, 0x08);
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bios_major = SMBIOS_GET8(addr, 0x14);
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bios_minor = SMBIOS_GET8(addr, 0x15);
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if (bios_minor != 0xFF && bios_major != 0xFF) {
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snprintf(buf, sizeof(buf), "%u.%u",
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bios_major, bios_minor);
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setenv("smbios.bios.revision", buf, 1);
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}
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break;
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case 1: /* 3.3.2 System Information (Type 1) */
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smbios_setenv("smbios.system.maker", addr, 0x04);
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smbios_setenv("smbios.system.product", addr, 0x05);
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smbios_setenv("smbios.system.version", addr, 0x06);
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#ifdef SMBIOS_SERIAL_NUMBERS
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smbios_setenv("smbios.system.serial", addr, 0x07);
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smbios_setuuid("smbios.system.uuid", addr + 0x08, smbios.ver);
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#endif
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if (smbios.major > 2 ||
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(smbios.major == 2 && smbios.minor >= 4)) {
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smbios_setenv("smbios.system.sku", addr, 0x19);
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smbios_setenv("smbios.system.family", addr, 0x1a);
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}
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break;
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case 2: /* 3.3.3 Base Board (or Module) Information (Type 2) */
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smbios_setenv("smbios.planar.maker", addr, 0x04);
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smbios_setenv("smbios.planar.product", addr, 0x05);
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smbios_setenv("smbios.planar.version", addr, 0x06);
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#ifdef SMBIOS_SERIAL_NUMBERS
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smbios_setenv("smbios.planar.serial", addr, 0x07);
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smbios_setenv("smbios.planar.tag", addr, 0x08);
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#endif
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smbios_setenv("smbios.planar.location", addr, 0x0a);
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break;
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case 3: /* 3.3.4 System Enclosure or Chassis (Type 3) */
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smbios_setenv("smbios.chassis.maker", addr, 0x04);
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setenv("smbios.chassis.type", smbios_parse_chassis_type(addr), 1);
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smbios_setenv("smbios.chassis.version", addr, 0x06);
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#ifdef SMBIOS_SERIAL_NUMBERS
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smbios_setenv("smbios.chassis.serial", addr, 0x07);
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smbios_setenv("smbios.chassis.tag", addr, 0x08);
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#endif
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break;
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case 4: /* 3.3.5 Processor Information (Type 4) */
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/*
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* Offset 18h: Processor Status
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*
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* Bit 7 Reserved, must be 0
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* Bit 6 CPU Socket Populated
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* 1 - CPU Socket Populated
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* 0 - CPU Socket Unpopulated
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* Bit 5:3 Reserved, must be zero
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* Bit 2:0 CPU Status
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* 0h - Unknown
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* 1h - CPU Enabled
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* 2h - CPU Disabled by User via BIOS Setup
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* 3h - CPU Disabled by BIOS (POST Error)
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* 4h - CPU is Idle, waiting to be enabled
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* 5-6h - Reserved
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* 7h - Other
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*/
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proc = SMBIOS_GET8(addr, 0x18);
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if ((proc & 0x07) == 1)
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smbios.enabled_sockets++;
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if ((proc & 0x40) != 0)
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smbios.populated_sockets++;
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break;
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case 6: /* 3.3.7 Memory Module Information (Type 6, Obsolete) */
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/*
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* Offset 0Ah: Enabled Size
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*
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* Bit 7 Bank connection
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* 1 - Double-bank connection
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* 0 - Single-bank connection
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* Bit 6:0 Size (n), where 2**n is the size in MB
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* 7Dh - Not determinable (Installed Size only)
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* 7Eh - Module is installed, but no memory
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* has been enabled
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* 7Fh - Not installed
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*/
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osize = SMBIOS_GET8(addr, 0x0a) & 0x7f;
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if (osize > 0 && osize < 22)
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smbios.old_enabled_memory += 1 << (osize + 10);
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break;
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case 17: /* 3.3.18 Memory Device (Type 17) */
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/*
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* Offset 0Ch: Size
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*
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* Bit 15 Granularity
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* 1 - Value is in kilobytes units
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* 0 - Value is in megabytes units
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* Bit 14:0 Size
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*/
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size = SMBIOS_GET16(addr, 0x0c);
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if (size != 0 && size != 0xffff)
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smbios.enabled_memory += (size & 0x8000) != 0 ?
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(size & 0x7fff) : (size << 10);
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break;
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default: /* skip other types */
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break;
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}
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/* Find structure terminator. */
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cp = SMBIOS_GETSTR(addr);
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while (SMBIOS_GET16(cp, 0) != 0)
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cp++;
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return (cp + 2);
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}
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static caddr_t
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smbios_find_struct(int type)
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{
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caddr_t dmi;
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size_t i;
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if (smbios.addr == NULL)
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return (NULL);
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for (dmi = smbios.addr, i = 0;
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dmi < smbios.addr + smbios.length && i < smbios.count; i++) {
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if (SMBIOS_GET8(dmi, 0) == type)
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return dmi;
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/* Find structure terminator. */
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dmi = SMBIOS_GETSTR(dmi);
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while (SMBIOS_GET16(dmi, 0) != 0)
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dmi++;
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dmi += 2;
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}
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return (NULL);
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}
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static void
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smbios_probe(const caddr_t addr)
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{
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caddr_t saddr, info;
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uintptr_t paddr;
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int maj_off;
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int min_off;
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if (smbios.probed)
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return;
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smbios.probed = 1;
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/* Search signatures and validate checksums. */
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saddr = smbios_sigsearch(addr ? addr : PTOV(SMBIOS_START),
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SMBIOS_LENGTH);
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if (saddr == NULL)
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return;
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#ifdef HAS_SMBV3
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if (isv3) {
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smbios.length = SMBIOS_GET32(saddr, 0x0c); /* Structure Table Length */
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paddr = SMBIOS_GET64(saddr, 0x10); /* Structure Table Address */
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smbios.count = -1; /* not present in V3 */
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smbios.ver = 0; /* not present in V3 */
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maj_off = 0x07;
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min_off = 0x08;
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} else
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#endif
|
|
{
|
|
smbios.length = SMBIOS_GET16(saddr, 0x16); /* Structure Table Length */
|
|
paddr = SMBIOS_GET32(saddr, 0x18); /* Structure Table Address */
|
|
smbios.count = SMBIOS_GET16(saddr, 0x1c); /* No of SMBIOS Structures */
|
|
smbios.ver = SMBIOS_GET8(saddr, 0x1e); /* SMBIOS BCD Revision */
|
|
maj_off = 0x06;
|
|
min_off = 0x07;
|
|
}
|
|
|
|
|
|
if (smbios.ver != 0) {
|
|
smbios.major = smbios.ver >> 4;
|
|
smbios.minor = smbios.ver & 0x0f;
|
|
if (smbios.major > 9 || smbios.minor > 9)
|
|
smbios.ver = 0;
|
|
}
|
|
if (smbios.ver == 0) {
|
|
smbios.major = SMBIOS_GET8(saddr, maj_off);/* SMBIOS Major Version */
|
|
smbios.minor = SMBIOS_GET8(saddr, min_off);/* SMBIOS Minor Version */
|
|
}
|
|
smbios.ver = (smbios.major << 8) | smbios.minor;
|
|
smbios.addr = PTOV(paddr);
|
|
|
|
/* Get system information from SMBIOS */
|
|
info = smbios_find_struct(0x00);
|
|
if (info != NULL) {
|
|
smbios.bios_vendor = smbios_getstring(info, 0x04);
|
|
}
|
|
info = smbios_find_struct(0x01);
|
|
if (info != NULL) {
|
|
smbios.maker = smbios_getstring(info, 0x04);
|
|
smbios.product = smbios_getstring(info, 0x05);
|
|
}
|
|
}
|
|
|
|
void
|
|
smbios_detect(const caddr_t addr)
|
|
{
|
|
char buf[16];
|
|
caddr_t dmi;
|
|
size_t i;
|
|
|
|
smbios_probe(addr);
|
|
if (smbios.addr == NULL)
|
|
return;
|
|
|
|
for (dmi = smbios.addr, i = 0;
|
|
dmi < smbios.addr + smbios.length && i < smbios.count; i++)
|
|
dmi = smbios_parse_table(dmi);
|
|
|
|
sprintf(buf, "%d.%d", smbios.major, smbios.minor);
|
|
setenv("smbios.version", buf, 1);
|
|
if (smbios.enabled_memory > 0 || smbios.old_enabled_memory > 0) {
|
|
sprintf(buf, "%u", smbios.enabled_memory > 0 ?
|
|
smbios.enabled_memory : smbios.old_enabled_memory);
|
|
setenv("smbios.memory.enabled", buf, 1);
|
|
}
|
|
if (smbios.enabled_sockets > 0) {
|
|
sprintf(buf, "%u", smbios.enabled_sockets);
|
|
setenv("smbios.socket.enabled", buf, 1);
|
|
}
|
|
if (smbios.populated_sockets > 0) {
|
|
sprintf(buf, "%u", smbios.populated_sockets);
|
|
setenv("smbios.socket.populated", buf, 1);
|
|
}
|
|
}
|
|
|
|
static int
|
|
smbios_match_str(const char* s1, const char* s2)
|
|
{
|
|
return (s1 == NULL || (s2 != NULL && !strcmp(s1, s2)));
|
|
}
|
|
|
|
int
|
|
smbios_match(const char* bios_vendor, const char* maker,
|
|
const char* product)
|
|
{
|
|
/* XXXRP currently, only called from non-EFI. */
|
|
smbios_probe(NULL);
|
|
return (smbios_match_str(bios_vendor, smbios.bios_vendor) &&
|
|
smbios_match_str(maker, smbios.maker) &&
|
|
smbios_match_str(product, smbios.product));
|
|
}
|