/*

 * Decoding of OEM-specific entries

 * This file is part of the dmidecode project.

 *

 *   Copyright (C) 2007-2020 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

 *   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

 */

#include <stdio.h>

#include <string.h>

#include "types.h"

#include "dmidecode.h"

#include "dmioem.h"

#include "dmioutput.h"

/*

 * Globals for vendor-specific decodes

 */

enum DMI_VENDORS

{

	VENDOR_UNKNOWN,

	VENDOR_ACER,

	VENDOR_HP,

	VENDOR_HPE,

	VENDOR_IBM,

	VENDOR_LENOVO,

};

static enum DMI_VENDORS dmi_vendor = VENDOR_UNKNOWN;

/*

 * Remember the system vendor for later use. We only actually store the

 * value if we know how to decode at least one specific entry type for

 * that vendor.

 */

void dmi_set_vendor(const char *s)

{

	int len;

	/*

	 * Often DMI strings have trailing spaces. Ignore these

	 * when checking for known vendor names.

	 */

	len = strlen(s);

	while (len && s[len - 1] == ' ')

		len--;

	if (strncmp(s, "Acer", len) == 0)

		dmi_vendor = VENDOR_ACER;

	else if (strncmp(s, "HP", len) == 0 || strncmp(s, "Hewlett-Packard", len) == 0)

		dmi_vendor = VENDOR_HP;

	else if (strncmp(s, "HPE", len) == 0 || strncmp(s, "Hewlett Packard Enterprise", len) == 0)

		dmi_vendor = VENDOR_HPE;

	else if (strncmp(s, "IBM", len) == 0)

		dmi_vendor = VENDOR_IBM;

	else if (strncmp(s, "LENOVO", len) == 0)

		dmi_vendor = VENDOR_LENOVO;

}

/*

 * Acer-specific data structures are decoded here.

 */

static int dmi_decode_acer(const struct dmi_header *h)

{

	u8 *data = h->data;

	u16 cap;

	switch (h->type)

	{

		case 170:

			/*

			 * Vendor Specific: Acer Hotkey Function

			 *

			 * Source: acer-wmi kernel driver

			 *

			 * Probably applies to some laptop models of other

			 * brands, including Fujitsu-Siemens, Medion, Lenovo,

			 * and eMachines.

			 */

			pr_handle_name("Acer Hotkey Function");

			if (h->length < 0x0F) break;

			cap = WORD(data + 0x04);

			pr_attr("Function bitmap for Communication Button", "0x%04hx", cap);

			pr_subattr("WiFi", "%s", cap & 0x0001 ? "Yes" : "No");

			pr_subattr("3G", "%s", cap & 0x0040 ? "Yes" : "No");

			pr_subattr("WiMAX", "%s", cap & 0x0080 ? "Yes" : "No");

			pr_subattr("Bluetooth", "%s", cap & 0x0800 ? "Yes" : "No");

			pr_attr("Function bitmap for Application Button", "0x%04hx", WORD(data + 0x06));

			pr_attr("Function bitmap for Media Button", "0x%04hx", WORD(data + 0x08));

			pr_attr("Function bitmap for Display Button", "0x%04hx", WORD(data + 0x0A));

			pr_attr("Function bitmap for Others Button", "0x%04hx", WORD(data + 0x0C));

			pr_attr("Communication Function Key Number", "%d", data[0x0E]);

			break;

		default:

			return 0;

	}

	return 1;

}

/*

 * HPE-specific data structures are decoded here.

 *

 * Code contributed by John Cagle and Tyler Bell.

 */

static void dmi_print_hp_net_iface_rec(u8 id, u8 bus, u8 dev, const u8 *mac)

{

	/* Some systems do not provide an id. nic_ctr provides an artificial

	 * id, and assumes the records will be provided "in order".  Also,

	 * using 0xFF marker is not future proof. 256 NICs is a lot, but

	 * 640K ought to be enough for anybody(said no one, ever).

	 * */

	static u8 nic_ctr;

	char attr[8];

	if (id == 0xFF)

		id = ++nic_ctr;

	sprintf(attr, "NIC %hu", id);

	if (dev == 0x00 && bus == 0x00)

		pr_attr(attr, "Disabled");

	else if (dev == 0xFF && bus == 0xFF)

		pr_attr(attr, "Not Installed");

	else

	{

		pr_attr(attr, "PCI device %02x:%02x.%x, "

			"MAC address %02X:%02X:%02X:%02X:%02X:%02X",

			bus, dev >> 3, dev & 7,

			mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);

	}

}

static int dmi_decode_hp(const struct dmi_header *h)

{

	u8 *data = h->data;

	int nic, ptr;

	u32 feat;

	const char *company = (dmi_vendor == VENDOR_HP) ? "HP" : "HPE";

	switch (h->type)

	{

		case 204:

			/*

			 * Vendor Specific: HPE ProLiant System/Rack Locator

			 */

			pr_handle_name("%s ProLiant System/Rack Locator", company);

			if (h->length < 0x0B) break;

			pr_attr("Rack Name", "%s", dmi_string(h, data[0x04]));

			pr_attr("Enclosure Name", "%s", dmi_string(h, data[0x05]));

			pr_attr("Enclosure Model", "%s", dmi_string(h, data[0x06]));

			pr_attr("Enclosure Serial", "%s", dmi_string(h, data[0x0A]));

			pr_attr("Enclosure Bays", "%d", data[0x08]);

			pr_attr("Server Bay", "%s", dmi_string(h, data[0x07]));

			pr_attr("Bays Filled", "%d", data[0x09]);

			break;

		case 209:

		case 221:

			/*

			 * Vendor Specific: HPE ProLiant NIC MAC Information

			 *

			 * This prints the BIOS NIC number,

			 * PCI bus/device/function, and MAC address

			 *

			 * Type 209:

			 * Offset |  Name  | Width | Description

			 * -------------------------------------

			 *  0x00  |  Type  | BYTE  | 0xD1, MAC Info

			 *  0x01  | Length | BYTE  | Length of structure

			 *  0x02  | Handle | WORD  | Unique handle

			 *  0x04  | Dev No | BYTE  | PCI Device/Function No

			 *  0x05  | Bus No | BYTE  | PCI Bus

			 *  0x06  |   MAC  | 6B    | MAC addr

			 *  0x0C  | NIC #2 | 8B    | Repeat 0x04-0x0B

			 *

			 * Type 221: is deprecated in the latest docs

			 */

			pr_handle_name("%s %s", company, h->type == 221 ?

				       "BIOS iSCSI NIC PCI and MAC Information" :

				       "BIOS PXE NIC PCI and MAC Information");

			nic = 1;

			ptr = 4;

			while (h->length >= ptr + 8)

			{

				dmi_print_hp_net_iface_rec(nic,

							   data[ptr + 0x01],

							   data[ptr],

							   &data[ptr + 0x02]);

				nic++;

				ptr += 8;

			}

			break;

		case 233:

			/*

			 * Vendor Specific: HPE ProLiant NIC MAC Information

			 *

			 * This prints the BIOS NIC number,

			 * PCI bus/device/function, and MAC address

			 *

			 * Offset |  Name  | Width | Description

			 * -------------------------------------

			 *  0x00  |  Type  | BYTE  | 0xE9, NIC structure

			 *  0x01  | Length | BYTE  | Length of structure

			 *  0x02  | Handle | WORD  | Unique handle

			 *  0x04  | Grp No | WORD  | 0 for single segment

			 *  0x06  | Bus No | BYTE  | PCI Bus

			 *  0x07  | Dev No | BYTE  | PCI Device/Function No

			 *  0x08  |   MAC  | 32B   | MAC addr padded w/ 0s

			 *  0x28  | Port No| BYTE  | Each NIC maps to a Port

			 */

			pr_handle_name("%s BIOS PXE NIC PCI and MAC Information",

				       company);

			if (h->length < 0x0E) break;

			/* If the record isn't long enough, we don't have an ID

			 * use 0xFF to use the internal counter.

			 * */

			nic = h->length > 0x28 ? data[0x28] : 0xFF;

			dmi_print_hp_net_iface_rec(nic, data[0x06], data[0x07],

						   &data[0x08]);

			break;

		case 212:

			/*

			 * Vendor Specific: HPE 64-bit CRU Information

			 *

			 * Source: hpwdt kernel driver

			 */

			pr_handle_name("%s 64-bit CRU Information", company);

			if (h->length < 0x18) break;

			if (is_printable(data + 0x04, 4))

				pr_attr("Signature", "0x%08x (%c%c%c%c)",

					DWORD(data + 0x04),

					data[0x04], data[0x05],

					data[0x06], data[0x07]);

			else

				pr_attr("Signature", "0x%08x", DWORD(data + 0x04));

			if (DWORD(data + 0x04) == 0x55524324)

			{

				u64 paddr = QWORD(data + 0x08);

				paddr.l += DWORD(data + 0x14);

				if (paddr.l < DWORD(data + 0x14))

					paddr.h++;

				pr_attr("Physical Address", "0x%08x%08x",

					paddr.h, paddr.l);

				pr_attr("Length", "0x%08x", DWORD(data + 0x10));

			}

			break;

		case 219:

			/*

			 * Vendor Specific: HPE ProLiant Information

			 *

			 * Source: hpwdt kernel driver

			 */

			pr_handle_name("%s ProLiant Information", company);

			if (h->length < 0x08) break;

			pr_attr("Power Features", "0x%08x", DWORD(data + 0x04));

			if (h->length < 0x0C) break;

			pr_attr("Omega Features", "0x%08x", DWORD(data + 0x08));

			if (h->length < 0x14) break;

			feat = DWORD(data + 0x10);

			pr_attr("Misc. Features", "0x%08x", feat);

			pr_subattr("iCRU", "%s", feat & 0x0001 ? "Yes" : "No");

			pr_subattr("UEFI", "%s", feat & 0x1400 ? "Yes" : "No");

			break;

		default:

			return 0;

	}

	return 1;

}

static int dmi_decode_ibm_lenovo(const struct dmi_header *h)

{

	u8 *data = h->data;

	switch (h->type)

	{

		case 131:

			/*

			 * Vendor Specific: ThinkVantage Technologies feature bits

			 *

			 * Source: Compal hel81 Service Manual Software Specification,

			 *         documented under "System Management BIOS(SM BIOS)

			 *         version 2.4 or greater"

			 *

			 * Offset |  Name         | Width   | Description

			 * ----------------------------------------------

			 *  0x00  | Type          | BYTE    | 0x83

			 *  0x01  | Length        | BYTE    | 0x16

			 *  0x02  | Handle        | WORD    | Varies

			 *  0x04  | Version       | BYTE    | 0x01

			 *  0x05  | TVT Structure | BYTEx16 | Each of the 128 bits represents a TVT feature:

			 *        |               |         |  - bit 127 means diagnostics (PC Doctor) is available

			 *        |               |         |    (http://www.pc-doctor.com/company/pr-articles/45-lenovo-introduces-thinkvantage-toolbox)

			 *        |               |         |  - the rest (126-0) are reserved/unknown

			 *

			 * It must also be followed by a string containing

			 * "TVT-Enablement". There exist other type 131 records

			 * with different length and a different string, for

			 * other purposes.

			 */

			if (h->length != 0x16

			 || strcmp(dmi_string(h, 1), "TVT-Enablement") != 0)

				return 0;

			pr_handle_name("ThinkVantage Technologies");

			pr_attr("Version", "%u", data[0x04]);

			pr_attr("Diagnostics", "%s",

				data[0x14] & 0x80 ? "Available" : "No");

			break;

		case 135:

			/*

			 * Vendor Specific: Device Presence Detection bits

			 *

			 * Source: Compal hel81 Service Manual Software Specification,

			 *         documented as "SMBIOS Type 135: Bulk for Lenovo

			 *         Mobile PC Unique OEM Data" under appendix D.

			 *

			 * Offset |  Name                | Width | Description

			 * ---------------------------------------------------

			 *  0x00  | Type                 | BYTE  | 0x87

			 *  0x01  | Length               | BYTE  | 0x0A

			 *  0x02  | Handle               | WORD  | Varies

			 *  0x04  | Signature            | WORD  | 0x5054 (ASCII for "TP")

			 *  0x06  | OEM struct offset    | BYTE  | 0x07

			 *  0x07  | OEM struct number    | BYTE  | 0x03, for this structure

			 *  0x08  | OEM struct revision  | BYTE  | 0x01, for this format

			 *  0x09  | Device presence bits | BYTE  | Each of the 8 bits indicates device presence:

			 *        |                      |       |  - bit 0 indicates the presence of a fingerprint reader

			 *        |                      |       |  - the rest (7-1) are reserved/unknown

			 *

			 * Other OEM struct number+rev combinations have been

			 * seen in the wild but we don't know how to decode

			 * them.

			 */

			if (h->length < 0x0A || data[0x04] != 'T' || data[0x05] != 'P')

				return 0;

			/* Bail out if not the expected format */

			if (data[0x06] != 0x07 || data[0x07] != 0x03 || data[0x08] != 0x01)

				return 0;

			pr_handle_name("ThinkPad Device Presence Detection");

			pr_attr("Fingerprint Reader", "%s",

				data[0x09] & 0x01 ? "Present" : "No");

			break;

		case 140:

			/*

			 * Vendor Specific: ThinkPad Embedded Controller Program

			 *

			 * Source: some guesswork, and publicly available information;

			 *         Lenovo's BIOS update READMEs often contain the ECP IDs

			 *         which match the first string in this type.

			 *

			 * Offset |  Name                | Width  | Description

			 * ----------------------------------------------------

			 *  0x00  | Type                 | BYTE   | 0x8C

			 *  0x01  | Length               | BYTE   |

			 *  0x02  | Handle               | WORD   | Varies

			 *  0x04  | Signature            | BYTEx6 | ASCII for "LENOVO"

			 *  0x0A  | OEM struct offset    | BYTE   | 0x0B

			 *  0x0B  | OEM struct number    | BYTE   | 0x07, for this structure

			 *  0x0C  | OEM struct revision  | BYTE   | 0x01, for this format

			 *  0x0D  | ECP version ID       | STRING |

			 *  0x0E  | ECP release date     | STRING |

			 */

			if (h->length < 0x0F || memcmp(data + 4, "LENOVO", 6) != 0)

				return 0;

			/* Bail out if not the expected format */

			if (data[0x0A] != 0x0B || data[0x0B] != 0x07 || data[0x0C] != 0x01)

				return 0;

			pr_handle_name("ThinkPad Embedded Controller Program");

			pr_attr("Version ID", "%s", dmi_string(h, 1));

			pr_attr("Release Date", "%s", dmi_string(h, 2));

			break;

		default:

			return 0;

	}

	return 1;

}

/*

 * Dispatch vendor-specific entries decoding

 * Return 1 if decoding was successful, 0 otherwise

 */

int dmi_decode_oem(const struct dmi_header *h)

{

	switch (dmi_vendor)

	{

		case VENDOR_HP:

		case VENDOR_HPE:

			return dmi_decode_hp(h);

		case VENDOR_ACER:

			return dmi_decode_acer(h);

		case VENDOR_IBM:

		case VENDOR_LENOVO:

			return dmi_decode_ibm_lenovo(h);

		default:

			return 0;

	}

}