First commit to SVN.

git-svn-id: svn://svn.autonomy.net.au/python-dmidecode@1 abc39116-655e-4be6-ad55-d661dc543056

1 files changed, 666 insertions, 0 deletions

diff --git a/biosdecode.c b/biosdecode.c
new file mode 100644
index 0000000..354234e
--- /dev/null
+++ b/biosdecode.c
@@ -0,0 +1,666 @@
+/*
+ * BIOS Decode
+ *
+ *   (C) 2000-2002 Alan Cox <alan@redhat.com>
+ *   (C) 2002-2007 Jean Delvare <khali@linux-fr.org>
+ *
+ *   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
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ *   For the avoidance of doubt the "preferred form" of this code is one which
+ *   is in an open unpatent encumbered format. Where cryptographic key signing
+ *   forms part of the process of creating an executable the information
+ *   including keys needed to generate an equivalently functional executable
+ *   are deemed to be part of the source code.
+ *
+ * References:
+ *  - DMTF "System Management BIOS Reference Specification"
+ *    Version 2.3.4
+ *    http://www.dmtf.org/standards/smbios
+ *	- Intel "Preboot Execution Environment (PXE) Specification"
+ *    Version 2.1
+ *    http://www.intel.com/labs/manage/wfm/wfmspecs.htm
+ *  - ACPI "Advanced Configuration and Power Interface Specification"
+ *    Revision 2.0
+ *    http://www.acpi.info/spec20.htm
+ *  - Phoenix "BIOS32 Service Directory"
+ *    Revision 0.4
+ *    http://www.phoenix.com/en/support/white+papers-specs/
+ *  - Microsoft "Plug and Play BIOS Specification"
+ *    Version 1.0A
+ *    http://www.microsoft.com/hwdev/tech/PnP/
+ *  - Microsoft "PCI IRQ Routing Table Specification"
+ *    Version 1.0
+ *    http://www.microsoft.com/hwdev/archive/BUSBIOS/pciirq.asp
+ *  - Compaq "Technical Reference Guide for Compaq Deskpro 4000 and 6000"
+ *    First Edition
+ *    http://h18000.www1.hp.com/support/techpubs/technical_reference_guides/113a1097.html
+ *  - IBM "Using the BIOS Build ID to identify Thinkpad systems"
+ *    Revision 2005-09-19
+ *    http://www-307.ibm.com/pc/support/site.wss/MIGR-45120.html
+ *  - Fujitsu application panel technical details
+ *    As of July 23rd, 2004
+ *    http://apanel.sourceforge.net/tech.php
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+
+#include "version.h"
+#include "config.h"
+#include "types.h"
+#include "util.h"
+
+/* Options are global */
+struct opt
+{
+	const char* devmem;
+	unsigned int flags;
+};
+static struct opt opt;
+
+#define FLAG_VERSION            (1<<0)
+#define FLAG_HELP               (1<<1)
+
+struct bios_entry {
+	const char *anchor;
+	size_t anchor_len; /* computed */
+	off_t low_address;
+	off_t high_address;
+	size_t (*length)(const u8 *);
+	int (*decode)(const u8*, size_t);
+};
+
+
+/*
+ * SMBIOS
+ */
+
+static size_t smbios_length(const u8 *p)
+{
+	return(p[0x05]==0x1E?0x1F:p[0x05]);
+}
+
+static int smbios_decode(const u8 *p, size_t len)
+{
+	if(len<0x1F || !checksum(p, p[0x05])
+	 || memcmp("_DMI_", p+0x10, 5)!=0
+	 || !checksum(p+0x10, 0x0F))
+		return 0;
+	
+	printf("SMBIOS %u.%u present.\n",
+		p[0x06], p[0x07]);
+	printf("\tStructure Table Length: %u bytes\n",
+		WORD(p+0x16));
+	printf("\tStructure Table Address: 0x%08X\n",
+		DWORD(p+0x18));
+	printf("\tNumber Of Structures: %u\n",
+		WORD(p+0x1C));
+	printf("\tMaximum Structure Size: %u bytes\n",
+		WORD(p+0x08));
+	
+	return 1;
+}
+
+static size_t dmi_length(const u8 *p)
+{
+	(void) p;
+	
+	return(0x0F);
+}
+
+static int dmi_decode(const u8 *p, size_t len)
+{
+	if(len<0x0F || !checksum(p, len))
+		return 0;
+	
+	printf("Legacy DMI %u.%u present.\n",
+		p[0x0E]>>4, p[0x0E]&0x0F);
+	printf("\tStructure Table Length: %u bytes\n",
+		WORD(p+0x06));
+	printf("\tStructure Table Address: 0x%08X\n",
+		DWORD(p+0x08));
+	printf("\tNumber Of Structures: %u\n",
+		WORD(p+0x0C));
+	
+	return 1;
+}
+
+/*
+ * SYSID
+ */
+
+static size_t sysid_length(const u8 *p)
+{
+	return WORD(p+0x08);
+}
+
+static int sysid_decode(const u8 *p, size_t len)
+{
+	if(len<0x11 || !checksum(p, WORD(p+0x08)))
+		return 0;
+	
+	printf("SYSID present.\n");
+	printf("\tRevision: %u\n",
+		p[0x10]);
+	printf("\tStructure Table Address: 0x%08X\n",
+		DWORD(p+0x0A));
+	printf("\tNumber Of Structures: %u\n",
+		WORD(p+0x0E));
+	
+	return 1;
+}
+
+/*
+ * PnP
+ */
+
+static size_t pnp_length(const u8 *p)
+{
+	return(p[0x05]);
+}
+
+static const char *pnp_event_notification(u8 code)
+{
+	static const char *notification[]={
+		"Not Supported", /* 0x0 */
+		"Polling",
+		"Asynchronous",
+		"Unknown" /* 0x3 */
+	};
+	
+	return notification[code];
+}
+
+static int pnp_decode(const u8 *p, size_t len)
+{
+	if(len<0x21 || !checksum(p, p[0x05]))
+		return 0;
+	
+	printf("PNP BIOS %u.%u present.\n",
+		p[0x04]>>4, p[0x04]&0x0F);
+	printf("\tEvent Notification: %s\n",
+		pnp_event_notification(WORD(p+0x06)&0x03));
+	if((WORD(p+0x06)&0x03)==0x01)
+		printf("\tEvent Notification Flag Address: 0x%08X\n",
+			DWORD(p+0x09));
+	printf("\tReal Mode 16-bit Code Address: %04X:%04X\n",
+		WORD(p+0x0F), WORD(p+0x0D));
+	printf("\tReal Mode 16-bit Data Address: %04X:0000\n",
+		WORD(p+0x1B));
+	printf("\t16-bit Protected Mode Code Address: 0x%08X\n",
+		DWORD(p+0x13)+WORD(p+0x11));
+	printf("\t16-bit Protected Mode Data Address: 0x%08X\n",
+		DWORD(p+0x1D));
+	if(DWORD(p+0x17)!=0)
+		printf("\tOEM Device Identifier: %c%c%c%02X%02X\n",
+			0x40+((p[0x17]>>2)&0x1F),
+			0x40+((p[0x17]&0x03)<<3)+((p[0x18]>>5)&0x07),
+			0x40+(p[0x18]&0x1F), p[0x19], p[0x20]);
+	
+	return 1;
+}
+
+/*
+ * ACPI
+ */
+
+static size_t acpi_length(const u8 *p)
+{
+	return(p[15]==2?36:20);
+}
+
+static const char *acpi_revision(u8 code)
+{
+	switch(code)
+	{
+		case 0:
+			return " 1.0";
+		case 2:
+			return " 2.0";
+		default:
+			return "";
+	}
+}
+
+static int acpi_decode(const u8 *p, size_t len)
+{
+	if(len<20 || !checksum(p, 20))
+		return 0;
+	
+	printf("ACPI%s present.\n",
+		acpi_revision(p[15]));
+	printf("\tOEM Identifier: %c%c%c%c%c%c\n",
+		p[9], p[10], p[11], p[12], p[13], p[14]);
+	printf("\tRSD Table 32-bit Address: 0x%08X\n",
+		DWORD(p+16));
+	
+	if(len<36)
+		return 1;
+	
+	if(DWORD(p+20)>len || !checksum(p, DWORD(p+20)))
+		return 0;
+	
+	if(DWORD(p+20)<32) return 1;
+	
+	printf("\tXSD Table 64-bit Address: 0x%08X%08X\n",
+		QWORD(p+24).h, QWORD(p+24).l);
+	
+	return 1;
+}
+
+/*
+ * Sony
+ */
+
+static size_t sony_length(const u8 *p)
+{
+	return(p[0x05]);
+}
+
+static int sony_decode(const u8 *p, size_t len)
+{
+	if(!checksum(p, len))
+		return 0;
+	
+	printf("Sony system detected.\n");
+	
+	return 1;
+}
+
+/*
+ * BIOS32
+ */
+
+static size_t bios32_length(const u8 *p)
+{
+	return p[0x09]<<4;
+}
+
+static int bios32_decode(const u8 *p, size_t len)
+{
+	if(len<0x0A || !checksum(p, p[0x09]<<4))
+		return 0;
+	
+	printf("BIOS32 Service Directory present.\n");
+	printf("\tRevision: %u\n",
+		p[0x08]);
+	printf("\tCalling Interface Address: 0x%08X\n",
+		DWORD(p+0x04));
+	
+	return 1;
+}
+
+/*
+ * PIR
+ */
+
+static void pir_irqs(u16 code)
+{
+	if(code==0)
+		printf(" None");
+	else
+	{
+		u8 i;
+		
+		for(i=0; i<16; i++)
+			if(code&(1<<i))
+				printf(" %u", i);
+	}
+}
+
+static void pir_slot_number(u8 code)
+{
+	if(code==0)
+		printf(" on-board");
+	else
+		printf(" slot number %u", code);
+}
+
+static size_t pir_length(const u8 *p)
+{
+	return WORD(p+6);
+}
+
+static int pir_decode(const u8 *p, size_t len)
+{
+	int i;
+	
+	if(len<32 || !checksum(p, WORD(p+6)))
+		return 0;
+	
+	printf("PCI Interrupt Routing %u.%u present.\n",
+		p[5], p[4]);
+	printf("\tRouter ID: %02x:%02x.%1x\n",
+		p[8], p[9]>>3, p[9]&0x07);
+	printf("\tExclusive IRQs:");
+	pir_irqs(WORD(p+10));
+	printf("\n");
+	if(DWORD(p+12)!=0)
+		printf("\tCompatible Router: %04x:%04x\n",
+			WORD(p+12), WORD(p+14));
+	if(DWORD(p+16)!=0)
+		printf("\tMiniport Data: 0x%08X\n",
+			DWORD(p+16));
+	
+	for(i=1; i<=(WORD(p+6)-32)/16; i++)
+	{
+		printf("\tSlot Entry %u: ID %02x:%02x,",
+			i, p[(i+1)*16], p[(i+1)*16+1]>>3);
+		pir_slot_number(p[(i+1)*16+14]);
+		printf("\n");
+/*		printf("\tSlot Entry %u\n", i);
+		printf("\t\tID: %02x:%02x\n",
+			p[(i+1)*16], p[(i+1)*16+1]>>3);
+		printf("\t\tLink Value for INTA#: %u\n",
+			p[(i+1)*16+2]);
+		printf("\t\tIRQ Bitmap for INTA#:");
+		pir_irqs(WORD(p+(i+1)*16+3));
+		printf("\n");
+		printf("\t\tLink Value for INTB#: %u\n",
+			p[(i+1)*16+5]);
+		printf("\t\tIRQ Bitmap for INTB#:");
+		pir_irqs(WORD(p+(i+1)*16+6));
+		printf("\n");
+		printf("\t\tLink Value for INTC#: %u\n",
+			p[(i+1)*16+8]);
+		printf("\t\tIRQ Bitmap for INTC#:");
+		pir_irqs(WORD(p+(i+1)*16+9));
+		printf("\n");
+		printf("\t\tLink Value for INTD#: %u\n",
+			p[(i+1)*16+11]);
+		printf("\t\tIRQ Bitmap for INTD#:");
+		pir_irqs(WORD(p+(i+1)*16+12));
+		printf("\n");
+		printf("\t\tSlot Number:");
+		pir_slot_number(p[(i+1)*16+14]);
+		printf("\n");*/
+	}
+	
+	return 1;
+}
+
+/*
+ * Compaq-specific entries
+ */
+
+static size_t compaq_length(const u8 *p)
+{
+	return (p[4]*10+5);
+}
+
+static int compaq_decode(const u8 *p, size_t len)
+{
+	unsigned int i;
+	(void) len;
+
+	printf("Compaq-specific entries present.\n");
+
+	/* integrity checking (lack of checksum) */
+	for(i=0; i<p[4]; i++)
+	{
+		/*
+		 * We do not check for truncated entries, because the length
+		 * was computed from the number of records in compaq_length
+		 * right above, so it can't be wrong.
+		 */
+		if(p[5+i*10]!='$' || !(p[6+i*10]>='A' && p[6+i*10]<='Z')
+			|| !(p[7+i*10]>='A' && p[7+i*10]<='Z')
+			|| !(p[8+i*10]>='A' && p[8+i*10]<='Z'))
+		{
+			printf("\t Abnormal entry! Please report. [%02X %02X "
+				"%02X %02X]\n", p[5+i*10], p[6+i*10],
+				p[7+i*10], p[8+i*10]);
+			return 0;
+		}
+	}
+	
+	for(i=0; i<p[4]; i++)
+	{
+		printf("\tEntry %u: %c%c%c%c at 0x%08X (%u bytes)\n",
+			i+1, p[5+i*10], p[6+i*10], p[7+i*10], p[8+i*10],
+			DWORD(p+9+i*10), WORD(p+13+i*10));
+	}
+
+	return 1;
+}
+
+/*
+ * VPD (vital product data, IBM-specific)
+ */
+
+static void vpd_print_entry(const char *name, const u8 *p, size_t len)
+{
+	size_t i;
+	
+	printf("\t%s: ", name);
+	for(i=0; i<len; i++)
+		if(p[i]>=32 && p[i]<127)
+			printf("%c", p[i]);
+	printf("\n");
+}
+
+static size_t vpd_length(const u8 *p)
+{
+	return (p[5]);
+}
+
+static int vpd_decode(const u8 *p, size_t len)
+{
+	if(len<0x30)
+		return 0;
+
+	/* XSeries have longer records. */
+	if(!(len>=0x45 && checksum(p, len))
+	/* Some Netvista seem to work with this. */
+	&& !checksum(p, 0x30)
+	/* The Thinkpad checksum does *not* include the first 13 bytes. */
+	&& !checksum(p+0x0D, 0x30-0x0D))
+		return 0;
+	
+	printf("VPD present.\n");
+
+	vpd_print_entry("BIOS Build ID", p+0x0D, 9);
+	vpd_print_entry("Box Serial Number", p+0x16, 7);
+	vpd_print_entry("Motherboard Serial Number", p+0x1D, 11);
+	vpd_print_entry("Machine Type/Model", p+0x28, 7);
+	
+	if(len<0x45)
+		return 1;
+
+	vpd_print_entry("BIOS Release Date", p+0x30, 8);
+	
+	return 1;
+}
+
+/*
+ * Fujitsu application panel
+ */
+
+static size_t fjkeyinf_length(const u8 *p)
+{
+	(void) p;
+	/*
+	 * We don't know at this point, it's somewhere between 12 and 32.
+	 * So we return the max, it shouldn't hurt.
+	 */
+	return 32;
+}
+
+static int fjkeyinf_decode(const u8 *p, size_t len)
+{
+	(void) len;
+	int i;
+
+	printf("Fujitsu application panel present.\n");
+
+	for (i = 0; i < 6; i++)
+	{
+		if (*(p+8+i*4)==0)
+			return 1;
+		printf("\tDevice %d: type %u, chip %u", i+1,
+		       *(p+8+i*4), *(p+8+i*4+2));
+		if (*(p+8+i*4+1)) /* Access method */
+			printf(", SMBus address 0x%x", *(p+8+i*4+3) >> 1);
+		printf("\n");
+	}
+
+	return 1;
+}
+
+/*
+ * Main
+ */
+
+static struct bios_entry bios_entries[]={
+	{ "_SM_", 0, 0xF0000, 0xFFFFF, smbios_length, smbios_decode },
+	{ "_DMI_", 0, 0xF0000, 0xFFFFF, dmi_length, dmi_decode },
+	{ "_SYSID_", 0, 0xE0000, 0xFFFFF, sysid_length, sysid_decode },
+	{ "$PnP", 0, 0xF0000, 0xFFFFF, pnp_length, pnp_decode },
+	{ "RSD PTR ", 0, 0xE0000, 0xFFFFF, acpi_length, acpi_decode },
+	{ "$SNY", 0, 0xE0000, 0xFFFFF, sony_length, sony_decode },
+	{ "_32_", 0, 0xE0000, 0xFFFFF, bios32_length, bios32_decode },
+	{ "$PIR", 0, 0xF0000, 0xFFFFF, pir_length, pir_decode },
+	{ "32OS", 0, 0xE0000, 0xFFFFF, compaq_length, compaq_decode },
+	{ "\252\125VPD", 0, 0xF0000, 0xFFFFF, vpd_length, vpd_decode },
+	{ "FJKEYINF", 0, 0xF0000, 0xFFFFF, fjkeyinf_length, fjkeyinf_decode },
+	{ NULL, 0, 0, 0, NULL, NULL }
+};
+
+/* Believe it or not, this is significantly faster than memcmp and strncmp */
+static inline int anchor_match(const struct bios_entry *entry, const char *p)
+{
+	size_t i;
+	
+	for(i=0; i<entry->anchor_len; i++)
+		if(entry->anchor[i]!=p[i])
+			return 0;
+
+	return 1;
+}
+
+/* Return -1 on error, 0 on success */
+static int parse_command_line(int argc, char * const argv[])
+{
+	int option;
+	const char *optstring = "d:hV";
+	struct option longopts[]={
+		{ "dev-mem", required_argument, NULL, 'd' },
+		{ "help", no_argument, NULL, 'h' },
+		{ "version", no_argument, NULL, 'V' },
+		{ 0, 0, 0, 0 }
+	};
+
+	while((option=getopt_long(argc, argv, optstring, longopts, NULL))!=-1)
+		switch(option)
+		{
+			case 'd':
+				opt.devmem=optarg;
+				break;
+			case 'h':
+				opt.flags|=FLAG_HELP;
+				break;
+			case 'V':
+				opt.flags|=FLAG_VERSION;
+				break;
+			case '?':
+				return -1;
+		}
+
+	return 0;
+}
+
+static void print_help(void)
+{
+	static const char *help=
+		"Usage: biosdecode [OPTIONS]\n"
+		"Options are:\n"
+		" -d, --dev-mem FILE     Read memory from device FILE (default: " DEFAULT_MEM_DEV ")\n"
+		" -h, --help             Display this help text and exit\n"
+		" -V, --version          Display the version and exit\n";
+	
+	printf("%s", help);
+}
+
+int main(int argc, char * const argv[])
+{
+	u8 *buf;
+	off_t fp;
+	int i;
+	
+	if(sizeof(u8)!=1 || sizeof(u16)!=2 || sizeof(u32)!=4)
+	{
+		fprintf(stderr, "%s: compiler incompatibility\n", argv[0]);
+		exit(255);
+	}
+	
+	/* Set default option values */
+	opt.devmem=DEFAULT_MEM_DEV;
+	opt.flags=0;
+
+	if(parse_command_line(argc, argv)<0)
+		exit(2);
+
+	if(opt.flags & FLAG_HELP)
+	{
+		print_help();
+		return 0;
+	}
+
+	if(opt.flags & FLAG_VERSION)
+	{
+		printf("%s\n", VERSION);
+		return 0;
+	}
+	
+	printf("# biosdecode %s\n", VERSION);
+
+	if((buf=mem_chunk(0xE0000, 0x20000, opt.devmem))==NULL)
+		exit(1);
+
+	/* Compute anchor lengths once and for all */
+	for(i=0; bios_entries[i].anchor!=NULL; i++)
+		bios_entries[i].anchor_len = strlen(bios_entries[i].anchor);
+
+	for(fp=0xE0000; fp<=0xFFFF0; fp+=16)
+	{
+		u8 *p=buf+fp-0xE0000;
+		
+		for(i=0; bios_entries[i].anchor!=NULL; i++)
+		{
+			if(anchor_match(&bios_entries[i], (char *)p)
+			 && fp>=bios_entries[i].low_address
+			 && fp<bios_entries[i].high_address)
+			{
+				off_t len=bios_entries[i].length(p);
+				
+				if(fp+len-1<=bios_entries[i].high_address)
+				{
+					if(bios_entries[i].decode(p, len))
+					{
+						fp+=(((len-1)>>4)<<4);
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	free(buf);	
+	
+	return 0;
+}