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-rw-r--r--dmidecode.c410
1 files changed, 334 insertions, 76 deletions
diff --git a/dmidecode.c b/dmidecode.c
index f41c85b..6559567 100644
--- a/dmidecode.c
+++ b/dmidecode.c
@@ -2,7 +2,7 @@
* DMI Decode
*
* Copyright (C) 2000-2002 Alan Cox <alan@redhat.com>
- * Copyright (C) 2002-2015 Jean Delvare <jdelvare@suse.de>
+ * Copyright (C) 2002-2017 Jean Delvare <jdelvare@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -25,7 +25,7 @@
* are deemed to be part of the source code.
*
* Unless specified otherwise, all references are aimed at the "System
- * Management BIOS Reference Specification, Version 3.0.0" document,
+ * Management BIOS Reference Specification, Version 3.1.1" document,
* available from http://www.dmtf.org/standards/smbios.
*
* Note to contributors:
@@ -50,6 +50,12 @@
* - DMTF DSP0239 version 1.1.0
* "Management Component Transport Protocol (MCTP) IDs and Codes"
* http://www.dmtf.org/standards/pmci
+ * - "TPM Main, Part 2 TPM Structures"
+ * Specification version 1.2, level 2, revision 116
+ * https://trustedcomputinggroup.org/tpm-main-specification/
+ * - "PC Client Platform TPM Profile (PTP) Specification"
+ * Family "2.0", Level 00, Revision 00.43, January 26, 2015
+ * https://trustedcomputinggroup.org/pc-client-platform-tpm-profile-ptp-specification/
*/
#include <stdio.h>
@@ -69,13 +75,14 @@
#define out_of_spec "<OUT OF SPEC>"
static const char *bad_index = "<BAD INDEX>";
-#define SUPPORTED_SMBIOS_VER 0x0300
+#define SUPPORTED_SMBIOS_VER 0x030101
#define FLAG_NO_FILE_OFFSET (1 << 0)
#define FLAG_STOP_AT_EOT (1 << 1)
-#define SYS_ENTRY_FILE "/sys/firmware/dmi/tables/smbios_entry_point"
-#define SYS_TABLE_FILE "/sys/firmware/dmi/tables/DMI"
+#define SYS_FIRMWARE_DIR "/sys/firmware/dmi/tables"
+#define SYS_ENTRY_FILE SYS_FIRMWARE_DIR "/smbios_entry_point"
+#define SYS_TABLE_FILE SYS_FIRMWARE_DIR "/DMI"
/*
* Type-independant Stuff
@@ -169,10 +176,13 @@ static const char *dmi_smbios_structure_type(u8 code)
"Power Supply",
"Additional Information",
"Onboard Device",
- "Management Controller Host Interface", /* 42 */
+ "Management Controller Host Interface",
+ "TPM Device", /* 43 */
};
- if (code <= 42)
+ if (code >= 128)
+ return "OEM-specific";
+ if (code <= 43)
return type[code];
return out_of_spec;
}
@@ -292,6 +302,18 @@ static void dmi_bios_runtime_size(u32 code)
printf(" %u kB", code >> 10);
}
+static void dmi_bios_rom_size(u8 code1, u16 code2)
+{
+ static const char *unit[4] = {
+ "MB", "GB", out_of_spec, out_of_spec
+ };
+
+ if (code1 != 0xFF)
+ printf(" %u kB", (code1 + 1) << 6);
+ else
+ printf(" %u %s", code2 & 0x3FFF, unit[code2 >> 14]);
+}
+
static void dmi_bios_characteristics(u64 code, const char *prefix)
{
/* 7.1.1 */
@@ -550,12 +572,16 @@ static const char *dmi_chassis_type(u8 code)
"Blade Enclosing",
"Tablet",
"Convertible",
- "Detachable" /* 0x20 */
+ "Detachable",
+ "IoT Gateway",
+ "Embedded PC",
+ "Mini PC",
+ "Stick PC" /* 0x24 */
};
code &= 0x7F; /* bits 6:0 are chassis type, 7th bit is the lock bit */
- if (code >= 0x01 && code <= 0x20)
+ if (code >= 0x01 && code <= 0x24)
return type[code - 0x01];
return out_of_spec;
}
@@ -717,7 +743,9 @@ static const char *dmi_processor_family(const struct dmi_header *h, u16 ver)
{ 0x2A, "Core Solo Mobile" },
{ 0x2B, "Atom" },
{ 0x2C, "Core M" },
-
+ { 0x2D, "Core m3" },
+ { 0x2E, "Core m5" },
+ { 0x2F, "Core m7" },
{ 0x30, "Alpha" },
{ 0x31, "Alpha 21064" },
{ 0x32, "Alpha 21066" },
@@ -769,6 +797,9 @@ static const char *dmi_processor_family(const struct dmi_header *h, u16 ver)
{ 0x66, "Athlon X4" },
{ 0x67, "Opteron X1000" },
{ 0x68, "Opteron X2000" },
+ { 0x69, "Opteron A-Series" },
+ { 0x6A, "Opteron X3000" },
+ { 0x6B, "Zen" },
{ 0x70, "Hobbit" },
@@ -880,6 +911,8 @@ static const char *dmi_processor_family(const struct dmi_header *h, u16 ver)
{ 0xFA, "i860" },
{ 0xFB, "i960" },
+ { 0x100, "ARMv7" },
+ { 0x101, "ARMv8" },
{ 0x104, "SH-3" },
{ 0x105, "SH-4" },
{ 0x118, "ARM" },
@@ -891,6 +924,10 @@ static const char *dmi_processor_family(const struct dmi_header *h, u16 ver)
{ 0x15E, "DSP" },
{ 0x1F4, "Video Processor" },
};
+ /*
+ * Note to developers: when adding entries to this list, check if
+ * function dmi_processor_id below needs updating too.
+ */
/* Special case for ambiguous value 0x30 (SMBIOS 2.0 only) */
if (ver == 0x0200 && data[0x06] == 0x30 && h->length >= 0x08)
@@ -943,7 +980,7 @@ static const char *dmi_processor_family(const struct dmi_header *h, u16 ver)
}
}
-static void dmi_processor_id(u8 type, const u8 *p, const char *version, const char *prefix)
+static void dmi_processor_id(const struct dmi_header *h, const char *prefix)
{
/* Intel AP-485 revision 36, table 2-4 */
static const char *flags[32] = {
@@ -980,13 +1017,14 @@ static void dmi_processor_id(u8 type, const u8 *p, const char *version, const ch
NULL, /* 30 */
"PBE (Pending break enabled)" /* 31 */
};
- /*
- * Extra flags are now returned in the ECX register when one calls
- * the CPUID instruction. Their meaning is explained in table 3-5, but
- * DMI doesn't support this yet.
- */
+ const u8 *data = h->data;
+ const u8 *p = data + 0x08;
u32 eax, edx;
int sig = 0;
+ u16 type;
+
+ type = (data[0x06] == 0xFE && h->length >= 0x2A) ?
+ WORD(data + 0x28) : data[0x06];
/*
* This might help learn about new processors supporting the
@@ -1026,8 +1064,24 @@ static void dmi_processor_id(u8 type, const u8 *p, const char *version, const ch
return;
}
}
+ else if ((type >= 0x100 && type <= 0x101) /* ARM */
+ || (type >= 0x118 && type <= 0x119)) /* ARM */
+ {
+ u32 midr = DWORD(p);
+ /*
+ * The format of this field was not defined for ARM processors
+ * before version 3.1.0 of the SMBIOS specification, so we
+ * silently skip it if it reads all zeroes.
+ */
+ if (midr == 0)
+ return;
+ printf("%sSignature: Implementor 0x%02x, Variant 0x%x, Architecture %u, Part 0x%03x, Revision %u\n",
+ prefix, midr >> 24, (midr >> 20) & 0xF,
+ (midr >> 16) & 0xF, (midr >> 4) & 0xFFF, midr & 0xF);
+ return;
+ }
else if ((type >= 0x0B && type <= 0x15) /* Intel, Cyrix */
- || (type >= 0x28 && type <= 0x2B) /* Intel */
+ || (type >= 0x28 && type <= 0x2F) /* Intel */
|| (type >= 0xA1 && type <= 0xB3) /* Intel */
|| type == 0xB5 /* Intel */
|| (type >= 0xB9 && type <= 0xC7) /* Intel */
@@ -1039,12 +1093,14 @@ static void dmi_processor_id(u8 type, const u8 *p, const char *version, const ch
|| type == 0x1F /* AMD */
|| (type >= 0x38 && type <= 0x3F) /* AMD */
|| (type >= 0x46 && type <= 0x4F) /* AMD */
+ || (type >= 0x66 && type <= 0x6B) /* AMD */
|| (type >= 0x83 && type <= 0x8F) /* AMD */
|| (type >= 0xB6 && type <= 0xB7) /* AMD */
|| (type >= 0xE4 && type <= 0xEF)) /* AMD */
sig = 2;
else if (type == 0x01 || type == 0x02)
{
+ const char *version = dmi_string(h, data[0x10]);
/*
* Some X86-class CPU have family "Other" or "Unknown". In this case,
* we use the version string to determine if they are known to
@@ -1062,9 +1118,14 @@ static void dmi_processor_id(u8 type, const u8 *p, const char *version, const ch
else
return;
}
- else /* not X86-class */
+ else /* neither X86 nor ARM */
return;
+ /*
+ * Extra flags are now returned in the ECX register when one calls
+ * the CPUID instruction. Their meaning is explained in table 3-5, but
+ * DMI doesn't support this yet.
+ */
eax = DWORD(p);
edx = DWORD(p + 4);
switch (sig)
@@ -1200,10 +1261,18 @@ static const char *dmi_processor_upgrade(u8 code)
"Socket LGA1150",
"Socket BGA1168",
"Socket BGA1234",
- "Socket BGA1364" /* 0x30 */
+ "Socket BGA1364",
+ "Socket AM4",
+ "Socket LGA1151",
+ "Socket BGA1356",
+ "Socket BGA1440",
+ "Socket BGA1515",
+ "Socket LGA3647-1",
+ "Socket SP3",
+ "Socket SP3r2" /* 0x38 */
};
- if (code >= 0x01 && code <= 0x30)
+ if (code >= 0x01 && code <= 0x38)
return upgrade[code - 0x01];
return out_of_spec;
}
@@ -1476,6 +1545,21 @@ static void dmi_cache_size(u16 code)
printf(" %u kB", code);
}
+static void dmi_cache_size_2(u32 code)
+{
+ if (code & 0x80000000)
+ {
+ code &= 0x7FFFFFFFLU;
+ /* Use a more convenient unit for large cache size */
+ if (code >= 0x8000)
+ printf(" %u MB", code >> 4);
+ else
+ printf(" %u kB", code << 6);
+ }
+ else
+ printf(" %u kB", code);
+}
+
static void dmi_cache_types(u16 code, const char *sep)
{
/* 7.8.2 */
@@ -1712,7 +1796,10 @@ static const char *dmi_slot_type(u8 code)
"MXM 3.0 Type A",
"MXM 3.0 Type B",
"PCI Express 2 SFF-8639",
- "PCI Express 3 SFF-8639" /* 0x20 */
+ "PCI Express 3 SFF-8639",
+ "PCI Express Mini 52-pin with bottom-side keep-outs",
+ "PCI Express Mini 52-pin without bottom-side keep-outs",
+ "PCI Express Mini 76-pin" /* 0x23 */
};
static const char *type_0xA0[] = {
"PC-98/C20", /* 0xA0 */
@@ -1744,7 +1831,7 @@ static const char *dmi_slot_type(u8 code)
* function dmi_slot_id below needs updating too.
*/
- if (code >= 0x01 && code <= 0x20)
+ if (code >= 0x01 && code <= 0x23)
return type[code - 0x01];
if (code >= 0xA0 && code <= 0xB6)
return type_0xA0[code - 0xA0];
@@ -1826,6 +1913,9 @@ static void dmi_slot_id(u8 code1, u8 code2, u8 type, const char *prefix)
case 0x13: /* AGP */
case 0x1F: /* PCI Express 2 */
case 0x20: /* PCI Express 3 */
+ case 0x21: /* PCI Express Mini */
+ case 0x22: /* PCI Express Mini */
+ case 0x23: /* PCI Express Mini */
case 0xA5: /* PCI Express */
case 0xA6: /* PCI Express */
case 0xA7: /* PCI Express */
@@ -2274,10 +2364,13 @@ static void dmi_memory_device_extended_size(u32 code)
{
code &= 0x7FFFFFFFUL;
- /* Use the most suitable unit depending on size */
+ /*
+ * Use the greatest unit for which the exact value can be displayed
+ * as an integer without rounding
+ */
if (code & 0x3FFUL)
printf(" %lu MB", (unsigned long)code);
- else if (code & 0xFFFFFUL)
+ else if (code & 0xFFC00UL)
printf(" %lu GB", (unsigned long)code >> 10);
else
printf(" %lu TB", (unsigned long)code >> 20);
@@ -2389,7 +2482,7 @@ static void dmi_memory_device_type_detail(u16 code)
"LRDIMM" /* 15 */
};
- if ((code & 0x7FFE) == 0)
+ if ((code & 0xFFFE) == 0)
printf(" None");
else
{
@@ -2406,7 +2499,7 @@ static void dmi_memory_device_speed(u16 code)
if (code == 0)
printf(" Unknown");
else
- printf(" %u MHz", code);
+ printf(" %u MT/s", code);
}
/*
@@ -2946,7 +3039,7 @@ static void dmi_64bit_memory_error_address(u64 code)
* first 5 characters of the device name to be trimmed. It's easy to
* check and fix, so do it, but warn.
*/
-static void dmi_fixup_type_34(struct dmi_header *h)
+static void dmi_fixup_type_34(struct dmi_header *h, int display)
{
u8 *p = h->data;
@@ -2954,7 +3047,10 @@ static void dmi_fixup_type_34(struct dmi_header *h)
if (h->length == 0x10
&& is_printable(p + 0x0B, 0x10 - 0x0B))
{
- printf("Invalid entry length (%u). Fixed up to %u.\n", 0x10, 0x0B);
+ if (!(opt.flags & FLAG_QUIET) && display)
+ fprintf(stderr,
+ "Invalid entry length (%u). Fixed up to %u.\n",
+ 0x10, 0x0B);
h->length = 0x0B;
}
}
@@ -3223,6 +3319,57 @@ static const char *dmi_management_controller_host_type(u8 code)
}
/*
+ * 7.44 TPM Device (Type 43)
+ */
+
+static void dmi_tpm_vendor_id(const u8 *p)
+{
+ char vendor_id[5];
+ int i;
+
+ /* ASCII filtering */
+ for (i = 0; i < 4 && p[i] != 0; i++)
+ {
+ if (p[i] < 32 || p[i] >= 127)
+ vendor_id[i] = '.';
+ else
+ vendor_id[i] = p[i];
+ }
+
+ /* Terminate the string */
+ vendor_id[i] = '\0';
+
+ printf(" %s", vendor_id);
+}
+
+static void dmi_tpm_characteristics(u64 code, const char *prefix)
+{
+ /* 7.1.1 */
+ static const char *characteristics[] = {
+ "TPM Device characteristics not supported", /* 2 */
+ "Family configurable via firmware update",
+ "Family configurable via platform software support",
+ "Family configurable via OEM proprietary mechanism" /* 5 */
+ };
+ int i;
+
+ /*
+ * This isn't very clear what this bit is supposed to mean
+ */
+ if (code.l & (1 << 2))
+ {
+ printf("%s%s\n",
+ prefix, characteristics[0]);
+ return;
+ }
+
+ for (i = 3; i <= 5; i++)
+ if (code.l & (1 << i))
+ printf("%s%s\n",
+ prefix, characteristics[i - 2]);
+}
+
+/*
* Main
*/
@@ -3257,8 +3404,9 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
dmi_bios_runtime_size((0x10000 - WORD(data + 0x06)) << 4);
printf("\n");
}
- printf("\tROM Size: %u kB\n",
- (data[0x09] + 1) << 6);
+ printf("\tROM Size:");
+ dmi_bios_rom_size(data[0x09], h->length < 0x1A ? 16 : WORD(data + 0x18));
+ printf("\n");
printf("\tCharacteristics:\n");
dmi_bios_characteristics(QWORD(data + 0x0A), "\t\t");
if (h->length < 0x13) break;
@@ -3382,7 +3530,7 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
dmi_processor_family(h, ver));
printf("\tManufacturer: %s\n",
dmi_string(h, data[0x07]));
- dmi_processor_id(data[0x06], data + 0x08, dmi_string(h, data[0x10]), "\t");
+ dmi_processor_id(h, "\t");
printf("\tVersion: %s\n",
dmi_string(h, data[0x10]));
printf("\tVoltage:");
@@ -3509,10 +3657,16 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
printf("\tLocation: %s\n",
dmi_cache_location((WORD(data + 0x05) >> 5) & 0x0003));
printf("\tInstalled Size:");
- dmi_cache_size(WORD(data + 0x09));
+ if (h->length >= 0x1B)
+ dmi_cache_size_2(DWORD(data + 0x17));
+ else
+ dmi_cache_size(WORD(data + 0x09));
printf("\n");
printf("\tMaximum Size:");
- dmi_cache_size(WORD(data + 0x07));
+ if (h->length >= 0x17)
+ dmi_cache_size_2(DWORD(data + 0x13));
+ else
+ dmi_cache_size(WORD(data + 0x07));
printf("\n");
printf("\tSupported SRAM Types:");
dmi_cache_types(WORD(data + 0x0B), "\n\t\t");
@@ -4234,7 +4388,7 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
}
if (data[0x11] != 0x00)
{
- printf("\tInterrupt Number: %x\n",
+ printf("\tInterrupt Number: %u\n",
data[0x11]);
}
break;
@@ -4331,6 +4485,43 @@ static void dmi_decode(const struct dmi_header *h, u16 ver)
}
break;
+ case 43: /* 7.44 TPM Device */
+ printf("TPM Device\n");
+ if (h->length < 0x1B) break;
+ printf("\tVendor ID:");
+ dmi_tpm_vendor_id(data + 0x04);
+ printf("\n");
+ printf("\tSpecification Version: %d.%d", data[0x08], data[0x09]);
+ switch (data[0x08])
+ {
+ case 0x01:
+ /*
+ * We skip the first 2 bytes, which are
+ * redundant with the above, and uncoded
+ * in a silly way.
+ */
+ printf("\tFirmware Revision: %u.%u\n",
+ data[0x0C], data[0x0D]);
+ break;
+ case 0x02:
+ printf("\tFirmware Revision: %u.%u\n",
+ DWORD(data + 0x0A) >> 16,
+ DWORD(data + 0x0A) && 0xFF);
+ /*
+ * We skip the next 4 bytes, as their
+ * format is not standardized and their
+ * usefulness seems limited anyway.
+ */
+ break;
+ }
+ printf("\tDescription: %s", dmi_string(h, data[0x12]));
+ printf("\tCharacteristics:\n");
+ dmi_tpm_characteristics(QWORD(data + 0x13), "\t\t");
+ if (h->length < 0x1F) break;
+ printf("\tOEM-specific Information: 0x%08X\n",
+ DWORD(data + 0x1B));
+ break;
+
case 126: /* 7.44 Inactive */
printf("Inactive\n");
break;
@@ -4364,6 +4555,21 @@ static void dmi_table_string(const struct dmi_header *h, const u8 *data, u16 ver
int key;
u8 offset = opt.string->offset;
+ if (opt.string->type == 11) /* OEM strings */
+ {
+ if (h->length < 5 || offset > data[4])
+ {
+ fprintf(stderr, "No OEM string number %u\n", offset);
+ return;
+ }
+
+ if (offset)
+ printf("%s\n", dmi_string(h, offset));
+ else
+ printf("%u\n", data[4]); /* count */
+ return;
+ }
+
if (offset >= h->length)
return;
@@ -4422,9 +4628,14 @@ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags)
*/
if (h.length < 4)
{
- printf("Invalid entry length (%u). DMI table is "
- "broken! Stop.\n\n", (unsigned int)h.length);
- opt.flags |= FLAG_QUIET;
+ if (!(opt.flags & FLAG_QUIET))
+ {
+ fprintf(stderr,
+ "Invalid entry length (%u). DMI table "
+ "is broken! Stop.\n\n",
+ (unsigned int)h.length);
+ opt.flags |= FLAG_QUIET;
+ }
break;
}
@@ -4443,7 +4654,7 @@ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags)
/* Fixup a common mistake */
if (h.type == 34)
- dmi_fixup_type_34(&h);
+ dmi_fixup_type_34(&h, display);
/* look for the next handle */
next = data + h.length;
@@ -4485,26 +4696,28 @@ static void dmi_table_decode(u8 *buf, u32 len, u16 num, u16 ver, u32 flags)
if (!(opt.flags & FLAG_QUIET))
{
if (num && i != num)
- printf("Wrong DMI structures count: %d announced, "
+ fprintf(stderr, "Wrong DMI structures count: %d announced, "
"only %d decoded.\n", num, i);
if ((unsigned long)(data - buf) > len
|| (num && (unsigned long)(data - buf) < len))
- printf("Wrong DMI structures length: %u bytes "
+ fprintf(stderr, "Wrong DMI structures length: %u bytes "
"announced, structures occupy %lu bytes.\n",
len, (unsigned long)(data - buf));
}
}
-static void dmi_table(off_t base, u32 len, u16 num, u16 ver, const char *devmem,
+static void dmi_table(off_t base, u32 len, u16 num, u32 ver, const char *devmem,
u32 flags)
{
u8 *buf;
if (ver > SUPPORTED_SMBIOS_VER && !(opt.flags & FLAG_QUIET))
{
- printf("# SMBIOS implementations newer than version %u.%u are not\n"
+ printf("# SMBIOS implementations newer than version %u.%u.%u are not\n"
"# fully supported by this version of dmidecode.\n",
- SUPPORTED_SMBIOS_VER >> 8, SUPPORTED_SMBIOS_VER & 0xFF);
+ SUPPORTED_SMBIOS_VER >> 16,
+ (SUPPORTED_SMBIOS_VER >> 8) & 0xFF,
+ SUPPORTED_SMBIOS_VER & 0xFF);
}
if (!(opt.flags & FLAG_QUIET))
@@ -4521,29 +4734,45 @@ static void dmi_table(off_t base, u32 len, u16 num, u16 ver, const char *devmem,
printf("\n");
}
- /*
- * When we are reading the DMI table from sysfs, we want to print
- * the address of the table (done above), but the offset of the
- * data in the file is 0. When reading from /dev/mem, the offset
- * in the file is the address.
- */
- if (flags & FLAG_NO_FILE_OFFSET)
- base = 0;
+ if ((flags & FLAG_NO_FILE_OFFSET) || (opt.flags & FLAG_FROM_DUMP))
+ {
+ /*
+ * When reading from sysfs or from a dump file, the file may be
+ * shorter than announced. For SMBIOS v3 this is expcted, as we
+ * only know the maximum table size, not the actual table size.
+ * For older implementations (and for SMBIOS v3 too), this
+ * would be the result of the kernel truncating the table on
+ * parse error.
+ */
+ size_t size = len;
+ buf = read_file(flags & FLAG_NO_FILE_OFFSET ? 0 : base,
+ &size, devmem);
+ if (!(opt.flags & FLAG_QUIET) && num && size != (size_t)len)
+ {
+ fprintf(stderr, "Wrong DMI structures length: %u bytes "
+ "announced, only %lu bytes available.\n",
+ len, (unsigned long)size);
+ }
+ len = size;
+ }
+ else
+ buf = mem_chunk(base, len, devmem);
- if ((buf = mem_chunk(base, len, devmem)) == NULL)
+ if (buf == NULL)
{
- fprintf(stderr, "Table is unreachable, sorry."
+ fprintf(stderr, "Failed to read table, sorry.\n");
#ifndef USE_MMAP
- " Try compiling dmidecode with -DUSE_MMAP."
+ if (!(flags & FLAG_NO_FILE_OFFSET))
+ fprintf(stderr,
+ "Try compiling dmidecode with -DUSE_MMAP.\n");
#endif
- "\n");
return;
}
if (opt.flags & FLAG_DUMP_BIN)
dmi_table_dump(buf, len);
else
- dmi_table_decode(buf, len, num, ver, flags);
+ dmi_table_decode(buf, len, num, ver >> 8, flags);
free(buf);
}
@@ -4580,13 +4809,13 @@ static void overwrite_smbios3_address(u8 *buf)
static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
{
- u16 ver;
+ u32 ver;
u64 offset;
if (!checksum(buf, buf[0x06]))
return 0;
- ver = (buf[0x07] << 8) + buf[0x08];
+ ver = (buf[0x07] << 16) + (buf[0x08] << 8) + buf[0x09];
if (!(opt.flags & FLAG_QUIET))
printf("SMBIOS %u.%u.%u present.\n",
buf[0x07], buf[0x08], buf[0x09]);
@@ -4599,7 +4828,7 @@ static int smbios3_decode(u8 *buf, const char *devmem, u32 flags)
}
dmi_table(((off_t)offset.h << 32) | offset.l,
- WORD(buf + 0x0C), 0, ver, devmem, flags | FLAG_STOP_AT_EOT);
+ DWORD(buf + 0x0C), 0, ver, devmem, flags | FLAG_STOP_AT_EOT);
if (opt.flags & FLAG_DUMP_BIN)
{
@@ -4633,14 +4862,16 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
case 0x021F:
case 0x0221:
if (!(opt.flags & FLAG_QUIET))
- printf("SMBIOS version fixup (2.%d -> 2.%d).\n",
- ver & 0xFF, 3);
+ fprintf(stderr,
+ "SMBIOS version fixup (2.%d -> 2.%d).\n",
+ ver & 0xFF, 3);
ver = 0x0203;
break;
case 0x0233:
if (!(opt.flags & FLAG_QUIET))
- printf("SMBIOS version fixup (2.%d -> 2.%d).\n",
- 51, 6);
+ fprintf(stderr,
+ "SMBIOS version fixup (2.%d -> 2.%d).\n",
+ 51, 6);
ver = 0x0206;
break;
}
@@ -4649,7 +4880,7 @@ static int smbios_decode(u8 *buf, const char *devmem, u32 flags)
ver >> 8, ver & 0xFF);
dmi_table(DWORD(buf + 0x18), WORD(buf + 0x16), WORD(buf + 0x1C),
- ver, devmem, flags);
+ ver << 8, devmem, flags);
if (opt.flags & FLAG_DUMP_BIN)
{
@@ -4677,7 +4908,8 @@ static int legacy_decode(u8 *buf, const char *devmem, u32 flags)
buf[0x0E] >> 4, buf[0x0E] & 0x0F);
dmi_table(DWORD(buf + 0x08), WORD(buf + 0x06), WORD(buf + 0x0C),
- ((buf[0x0E] & 0xF0) << 4) + (buf[0x0E] & 0x0F), devmem, flags);
+ ((buf[0x0E] & 0xF0) << 12) + ((buf[0x0E] & 0x0F) << 8),
+ devmem, flags);
if (opt.flags & FLAG_DUMP_BIN)
{
@@ -4748,9 +4980,17 @@ int main(int argc, char * const argv[])
int ret = 0; /* Returned value */
int found = 0;
off_t fp;
+ size_t size;
int efi;
u8 *buf;
+ /*
+ * We don't want stdout and stderr to be mixed up if both are
+ * redirected to the same file.
+ */
+ setlinebuf(stdout);
+ setlinebuf(stderr);
+
if (sizeof(u8) != 1 || sizeof(u16) != 2 || sizeof(u32) != 4 || '\0' != 0)
{
fprintf(stderr, "%s: compiler incompatibility\n", argv[0]);
@@ -4817,22 +5057,23 @@ int main(int argc, char * const argv[])
* contain one of several types of entry points, so read enough for
* the largest one, then determine what type it contains.
*/
+ size = 0x20;
if (!(opt.flags & FLAG_NO_SYSFS)
- && (buf = read_file(0x20, SYS_ENTRY_FILE)) != NULL)
+ && (buf = read_file(0, &size, SYS_ENTRY_FILE)) != NULL)
{
if (!(opt.flags & FLAG_QUIET))
printf("Getting SMBIOS data from sysfs.\n");
- if (memcmp(buf, "_SM3_", 5) == 0)
+ if (size >= 24 && memcmp(buf, "_SM3_", 5) == 0)
{
if (smbios3_decode(buf, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
found++;
}
- else if (memcmp(buf, "_SM_", 4) == 0)
+ else if (size >= 31 && memcmp(buf, "_SM_", 4) == 0)
{
if (smbios_decode(buf, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
found++;
}
- else if (memcmp(buf, "_DMI_", 5) == 0)
+ else if (size >= 15 && memcmp(buf, "_DMI_", 5) == 0)
{
if (legacy_decode(buf, SYS_TABLE_FILE, FLAG_NO_FILE_OFFSET))
found++;
@@ -4864,8 +5105,16 @@ int main(int argc, char * const argv[])
goto exit_free;
}
- if (smbios_decode(buf, opt.devmem, 0))
- found++;
+ if (memcmp(buf, "_SM3_", 5) == 0)
+ {
+ if (smbios3_decode(buf, opt.devmem, 0))
+ found++;
+ }
+ else if (memcmp(buf, "_SM_", 4) == 0)
+ {
+ if (smbios_decode(buf, opt.devmem, 0))
+ found++;
+ }
goto done;
memory_scan:
@@ -4878,28 +5127,37 @@ memory_scan:
goto exit_free;
}
- for (fp = 0; fp <= 0xFFF0; fp += 16)
+ /* Look for a 64-bit entry point first */
+ for (fp = 0; fp <= 0xFFE0; fp += 16)
{
- if (memcmp(buf + fp, "_SM3_", 5) == 0 && fp <= 0xFFE0)
+ if (memcmp(buf + fp, "_SM3_", 5) == 0)
{
if (smbios3_decode(buf + fp, opt.devmem, 0))
{
found++;
- fp += 16;
+ goto done;
}
}
- else if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0)
+ }
+
+ /* If none found, look for a 32-bit entry point */
+ for (fp = 0; fp <= 0xFFF0; fp += 16)
+ {
+ if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0)
{
if (smbios_decode(buf + fp, opt.devmem, 0))
{
found++;
- fp += 16;
+ goto done;
}
}
else if (memcmp(buf + fp, "_DMI_", 5) == 0)
{
if (legacy_decode(buf + fp, opt.devmem, 0))
+ {
found++;
+ goto done;
+ }
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 04:59:56 +0000