From: Sascha Wildner Date: Sun, 11 Nov 2012 11:30:20 +0000 (+0100) Subject: loader: Detect SMBIOS and export its information into the environment. X-Git-Tag: v3.4.0rc~865 X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/b95eca126723442c4ab3859d4a8be0d40c401879?hp=4e5366b505b9f3c9de219d762406ccab28f395f5 loader: Detect SMBIOS and export its information into the environment. Useful to check motherboard vendor/version, BIOS version and so forth. Use kenv(1) for viewing the information. This information can be accessed from the kernel but should only be as a last resort. Might also help in the future to better detect virtual machine types. Taken-from: FreeBSD --- diff --git a/sys/boot/pc32/libi386/Makefile b/sys/boot/pc32/libi386/Makefile index 8e58b5e718..96e2d01a62 100644 --- a/sys/boot/pc32/libi386/Makefile +++ b/sys/boot/pc32/libi386/Makefile @@ -1,5 +1,4 @@ # $FreeBSD: src/sys/boot/i386/libi386/Makefile,v 1.32 2003/07/02 12:45:45 ru Exp $ -# $DragonFly: src/sys/boot/pc32/libi386/Makefile,v 1.9 2007/05/18 07:41:43 dillon Exp $ # LIB= i386 INTERNALLIB= true @@ -11,7 +10,7 @@ SRCS= biosacpi.c bioscd.c biosdisk.c biosmem.c biospnp.c \ comconsole.c devicename.c elf32_freebsd.c \ elf64_freebsd.c gatea20.c \ i386_copy.c i386_module.c nullconsole.c pxe.c pxetramp.s \ - time.c vidconsole.c x86_64_tramp.S + smbios.c time.c vidconsole.c x86_64_tramp.S CFLAGS+= -ffreestanding BOOT_COMCONSOLE_PORT?= 0x3f8 diff --git a/sys/boot/pc32/libi386/libi386.h b/sys/boot/pc32/libi386/libi386.h index 03f246aaab..5f9ee151a3 100644 --- a/sys/boot/pc32/libi386/libi386.h +++ b/sys/boot/pc32/libi386/libi386.h @@ -24,7 +24,6 @@ * SUCH DAMAGE. * * $FreeBSD: src/sys/boot/i386/libi386/libi386.h,v 1.16 2003/05/01 03:56:29 peter Exp $ - * $DragonFly: src/sys/boot/pc32/libi386/libi386.h,v 1.5 2006/09/10 01:26:31 dillon Exp $ */ @@ -96,6 +95,8 @@ extern vm_offset_t memtop; void biosacpi_detect(void); +void smbios_detect(void); + void gateA20(void); int i386_autoload(void); diff --git a/sys/boot/pc32/libi386/smbios.c b/sys/boot/pc32/libi386/smbios.c new file mode 100644 index 0000000000..dd513a3553 --- /dev/null +++ b/sys/boot/pc32/libi386/smbios.c @@ -0,0 +1,346 @@ +/*- + * Copyright (c) 2005-2009 Jung-uk Kim + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/sys/boot/i386/libi386/smbios.c,v 1.10 2009/04/07 17:58:15 jkim Exp $ + */ + +#include +#include +#include + +#include "btxv86.h" +#include "libi386.h" + +/* + * Detect SMBIOS and export information about the SMBIOS into the + * environment. + * + * System Management BIOS Reference Specification, v2.6 Final + * http://www.dmtf.org/standards/published_documents/DSP0134_2.6.0.pdf + */ + +/* + * 2.1.1 SMBIOS Structure Table Entry Point + * + * "On non-EFI systems, the SMBIOS Entry Point structure, described below, can + * be located by application software by searching for the anchor-string on + * paragraph (16-byte) boundaries within the physical memory address range + * 000F0000h to 000FFFFFh. This entry point encapsulates an intermediate anchor + * string that is used by some existing DMI browsers." + */ +#define SMBIOS_START 0xf0000 +#define SMBIOS_LENGTH 0x10000 +#define SMBIOS_STEP 0x10 +#define SMBIOS_SIG "_SM_" +#define SMBIOS_DMI_SIG "_DMI_" + +#define SMBIOS_GET8(base, off) (*(uint8_t *)((base) + (off))) +#define SMBIOS_GET16(base, off) (*(uint16_t *)((base) + (off))) +#define SMBIOS_GET32(base, off) (*(uint32_t *)((base) + (off))) + +#define SMBIOS_GETLEN(base) SMBIOS_GET8(base, 0x01) +#define SMBIOS_GETSTR(base) ((base) + SMBIOS_GETLEN(base)) + +static uint32_t smbios_enabled_memory = 0; +static uint32_t smbios_old_enabled_memory = 0; +static uint8_t smbios_enabled_sockets = 0; +static uint8_t smbios_populated_sockets = 0; + +static uint8_t +smbios_checksum(const caddr_t addr, const uint8_t len) +{ + uint8_t sum; + int i; + + for (sum = 0, i = 0; i < len; i++) + sum += SMBIOS_GET8(addr, i); + return (sum); +} + +static caddr_t +smbios_sigsearch(const caddr_t addr, const uint32_t len) +{ + caddr_t cp; + + /* Search on 16-byte boundaries. */ + for (cp = addr; cp < addr + len; cp += SMBIOS_STEP) + if (strncmp(cp, SMBIOS_SIG, 4) == 0 && + smbios_checksum(cp, SMBIOS_GET8(cp, 0x05)) == 0 && + strncmp(cp + 0x10, SMBIOS_DMI_SIG, 5) == 0 && + smbios_checksum(cp + 0x10, 0x0f) == 0) + return (cp); + return (NULL); +} + +static void +smbios_setenv(const char *name, caddr_t addr, const int offset) +{ + caddr_t cp; + int i, idx; + + idx = SMBIOS_GET8(addr, offset); + if (idx != 0) { + cp = SMBIOS_GETSTR(addr); + for (i = 1; i < idx; i++) + cp += strlen(cp) + 1; + setenv(name, cp, 1); + } +} + +#ifdef SMBIOS_SERIAL_NUMBERS + +#define UUID_SIZE 16 +#define UUID_TYPE uint32_t +#define UUID_STEP sizeof(UUID_TYPE) +#define UUID_ALL_BITS (UUID_SIZE / UUID_STEP) +#define UUID_GET(base, off) (*(UUID_TYPE *)((base) + (off))) + +static void +smbios_setuuid(const char *name, const caddr_t addr, const int ver) +{ + char uuid[37]; + int i, ones, zeros; + UUID_TYPE n; + uint32_t f1; + uint16_t f2, f3; + + for (i = 0, ones = 0, zeros = 0; i < UUID_SIZE; i += UUID_STEP) { + n = UUID_GET(addr, i) + 1; + if (zeros == 0 && n == 0) + ones++; + else if (ones == 0 && n == 1) + zeros++; + else + break; + } + + if (ones != UUID_ALL_BITS && zeros != UUID_ALL_BITS) { + /* + * 3.3.2.1 System UUID + * + * "Although RFC 4122 recommends network byte order for all + * fields, the PC industry (including the ACPI, UEFI, and + * Microsoft specifications) has consistently used + * little-endian byte encoding for the first three fields: + * time_low, time_mid, time_hi_and_version. The same encoding, + * also known as wire format, should also be used for the + * SMBIOS representation of the UUID." + * + * Note: We use network byte order for backward compatibility + * unless SMBIOS version is 2.6+ or little-endian is forced. + */ +#ifndef SMBIOS_LITTLE_ENDIAN_UUID + if (ver < 0x0206) { + f1 = ntohl(SMBIOS_GET32(addr, 0)); + f2 = ntohs(SMBIOS_GET16(addr, 4)); + f3 = ntohs(SMBIOS_GET16(addr, 6)); + } else +#endif + { + f1 = le32toh(SMBIOS_GET32(addr, 0)); + f2 = le16toh(SMBIOS_GET16(addr, 4)); + f3 = le16toh(SMBIOS_GET16(addr, 6)); + } + sprintf(uuid, + "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", + f1, f2, f3, SMBIOS_GET8(addr, 8), SMBIOS_GET8(addr, 9), + SMBIOS_GET8(addr, 10), SMBIOS_GET8(addr, 11), + SMBIOS_GET8(addr, 12), SMBIOS_GET8(addr, 13), + SMBIOS_GET8(addr, 14), SMBIOS_GET8(addr, 15)); + setenv(name, uuid, 1); + } +} + +#undef UUID_SIZE +#undef UUID_TYPE +#undef UUID_STEP +#undef UUID_ALL_BITS +#undef UUID_GET + +#endif + +static caddr_t +smbios_parse_table(const caddr_t addr, const int ver) +{ + caddr_t cp; + int proc, size, osize, type; + + type = SMBIOS_GET8(addr, 0); /* 3.1.2 Structure Header Format */ + switch(type) { + case 0: /* 3.3.1 BIOS Information (Type 0) */ + smbios_setenv("smbios.bios.vendor", addr, 0x04); + smbios_setenv("smbios.bios.version", addr, 0x05); + smbios_setenv("smbios.bios.reldate", addr, 0x08); + break; + + case 1: /* 3.3.2 System Information (Type 1) */ + smbios_setenv("smbios.system.maker", addr, 0x04); + smbios_setenv("smbios.system.product", addr, 0x05); + smbios_setenv("smbios.system.version", addr, 0x06); +#ifdef SMBIOS_SERIAL_NUMBERS + smbios_setenv("smbios.system.serial", addr, 0x07); + smbios_setuuid("smbios.system.uuid", addr + 0x08, ver); +#endif + break; + + case 2: /* 3.3.3 Base Board (or Module) Information (Type 2) */ + smbios_setenv("smbios.planar.maker", addr, 0x04); + smbios_setenv("smbios.planar.product", addr, 0x05); + smbios_setenv("smbios.planar.version", addr, 0x06); +#ifdef SMBIOS_SERIAL_NUMBERS + smbios_setenv("smbios.planar.serial", addr, 0x07); +#endif + break; + + case 3: /* 3.3.4 System Enclosure or Chassis (Type 3) */ + smbios_setenv("smbios.chassis.maker", addr, 0x04); + smbios_setenv("smbios.chassis.version", addr, 0x06); +#ifdef SMBIOS_SERIAL_NUMBERS + smbios_setenv("smbios.chassis.serial", addr, 0x07); + smbios_setenv("smbios.chassis.tag", addr, 0x08); +#endif + break; + + case 4: /* 3.3.5 Processor Information (Type 4) */ + /* + * Offset 18h: Processor Status + * + * Bit 7 Reserved, must be 0 + * Bit 6 CPU Socket Populated + * 1 - CPU Socket Populated + * 0 - CPU Socket Unpopulated + * Bit 5:3 Reserved, must be zero + * Bit 2:0 CPU Status + * 0h - Unknown + * 1h - CPU Enabled + * 2h - CPU Disabled by User via BIOS Setup + * 3h - CPU Disabled by BIOS (POST Error) + * 4h - CPU is Idle, waiting to be enabled + * 5-6h - Reserved + * 7h - Other + */ + proc = SMBIOS_GET8(addr, 0x18); + if ((proc & 0x07) == 1) + smbios_enabled_sockets++; + if ((proc & 0x40) != 0) + smbios_populated_sockets++; + break; + + case 6: /* 3.3.7 Memory Module Information (Type 6, Obsolete) */ + /* + * Offset 0Ah: Enabled Size + * + * Bit 7 Bank connection + * 1 - Double-bank connection + * 0 - Single-bank connection + * Bit 6:0 Size (n), where 2**n is the size in MB + * 7Dh - Not determinable (Installed Size only) + * 7Eh - Module is installed, but no memory + * has been enabled + * 7Fh - Not installed + */ + osize = SMBIOS_GET8(addr, 0x0a) & 0x7f; + if (osize > 0 && osize < 22) + smbios_old_enabled_memory += 1 << (osize + 10); + break; + + case 17: /* 3.3.18 Memory Device (Type 17) */ + /* + * Offset 0Ch: Size + * + * Bit 15 Granularity + * 1 - Value is in kilobytes units + * 0 - Value is in megabytes units + * Bit 14:0 Size + */ + size = SMBIOS_GET16(addr, 0x0c); + if (size != 0 && size != 0xffff) + smbios_enabled_memory += (size & 0x8000) != 0 ? + (size & 0x7fff) : (size << 10); + break; + + default: /* skip other types */ + break; + } + + /* Find structure terminator. */ + cp = SMBIOS_GETSTR(addr); + while (SMBIOS_GET16(cp, 0) != 0) + cp++; + + return (cp + 2); +} + +void +smbios_detect(void) +{ + char buf[16]; + caddr_t addr, dmi, smbios; + size_t count, length; + uint32_t paddr; + int i, major, minor, ver; + + /* Search signatures and validate checksums. */ + smbios = smbios_sigsearch(PTOV(SMBIOS_START), SMBIOS_LENGTH); + if (smbios == NULL) + return; + + length = SMBIOS_GET16(smbios, 0x16); /* Structure Table Length */ + paddr = SMBIOS_GET32(smbios, 0x18); /* Structure Table Address */ + count = SMBIOS_GET16(smbios, 0x1c); /* No of SMBIOS Structures */ + ver = SMBIOS_GET8(smbios, 0x1e); /* SMBIOS BCD Revision */ + + if (ver != 0) { + major = ver >> 4; + minor = ver & 0x0f; + if (major > 9 || minor > 9) + ver = 0; + } + if (ver == 0) { + major = SMBIOS_GET8(smbios, 0x06); /* SMBIOS Major Version */ + minor = SMBIOS_GET8(smbios, 0x07); /* SMBIOS Minor Version */ + } + ver = (major << 8) | minor; + + addr = PTOV(paddr); + for (dmi = addr, i = 0; dmi < addr + length && i < count; i++) + dmi = smbios_parse_table(dmi, ver); + + sprintf(buf, "%d.%d", major, 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); + } +} diff --git a/sys/boot/pc32/loader/main.c b/sys/boot/pc32/loader/main.c index c9199cc4b5..3faef6e389 100644 --- a/sys/boot/pc32/loader/main.c +++ b/sys/boot/pc32/loader/main.c @@ -239,6 +239,9 @@ main(void) /* detect ACPI for future reference */ biosacpi_detect(); + /* detect SMBIOS for future reference */ + smbios_detect(); + /* enable EHCI */ setenv("ehci_load", "YES", 1);