Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull security subsystem updates from James Morris:
 "Highlights:

   - Integrity: add local fs integrity verification to detect offline
     attacks
   - Integrity: add digital signature verification
   - Simple stacking of Yama with other LSMs (per LSS discussions)
   - IBM vTPM support on ppc64
   - Add new driver for Infineon I2C TIS TPM
   - Smack: add rule revocation for subject labels"

Fixed conflicts with the user namespace support in kernel/auditsc.c and
security/integrity/ima/ima_policy.c.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (39 commits)
  Documentation: Update git repository URL for Smack userland tools
  ima: change flags container data type
  Smack: setprocattr memory leak fix
  Smack: implement revoking all rules for a subject label
  Smack: remove task_wait() hook.
  ima: audit log hashes
  ima: generic IMA action flag handling
  ima: rename ima_must_appraise_or_measure
  audit: export audit_log_task_info
  tpm: fix tpm_acpi sparse warning on different address spaces
  samples/seccomp: fix 31 bit build on s390
  ima: digital signature verification support
  ima: add support for different security.ima data types
  ima: add ima_inode_setxattr/removexattr function and calls
  ima: add inode_post_setattr call
  ima: replace iint spinblock with rwlock/read_lock
  ima: allocating iint improvements
  ima: add appraise action keywords and default rules
  ima: integrity appraisal extension
  vfs: move ima_file_free before releasing the file
  ...

16 files changed, 2440 insertions, 160 deletions

diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 7c0d391996b..fbd9b2b850e 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -289,3 +289,16 @@ config HW_RANDOM_EXYNOS
 	  module will be called exynos-rng.
 
 	  If unsure, say Y.
+
+config HW_RANDOM_TPM
+	tristate "TPM HW Random Number Generator support"
+	depends on HW_RANDOM && TCG_TPM
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator in the Trusted Platform Module
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tpm-rng.
+
+	  If unsure, say Y.
diff --git a/drivers/char/hw_random/Makefile b/drivers/char/hw_random/Makefile
index 39a757ca15b..1fd7eec9fbf 100644
--- a/drivers/char/hw_random/Makefile
+++ b/drivers/char/hw_random/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_HW_RANDOM_PICOXCELL) += picoxcell-rng.o
 obj-$(CONFIG_HW_RANDOM_PPC4XX) += ppc4xx-rng.o
 obj-$(CONFIG_HW_RANDOM_PSERIES) += pseries-rng.o
 obj-$(CONFIG_HW_RANDOM_EXYNOS)	+= exynos-rng.o
+obj-$(CONFIG_HW_RANDOM_TPM) += tpm-rng.o
diff --git a/drivers/char/hw_random/tpm-rng.c b/drivers/char/hw_random/tpm-rng.c
new file mode 100644
index 00000000000..d6d448266f0
--- /dev/null
+++ b/drivers/char/hw_random/tpm-rng.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012 Kent Yoder IBM Corporation
+ *
+ * HWRNG interfaces to pull RNG data from a TPM
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 <linux/module.h>
+#include <linux/hw_random.h>
+#include <linux/tpm.h>
+
+#define MODULE_NAME "tpm-rng"
+
+static int tpm_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
+{
+	return tpm_get_random(TPM_ANY_NUM, data, max);
+}
+
+static struct hwrng tpm_rng = {
+	.name = MODULE_NAME,
+	.read = tpm_rng_read,
+};
+
+static int __init rng_init(void)
+{
+	return hwrng_register(&tpm_rng);
+}
+module_init(rng_init);
+
+static void __exit rng_exit(void)
+{
+	hwrng_unregister(&tpm_rng);
+}
+module_exit(rng_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Kent Yoder <key@linux.vnet.ibm.com>");
+MODULE_DESCRIPTION("RNG driver for TPM devices");
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index a048199ce86..915875e431d 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -33,6 +33,17 @@ config TCG_TIS
 	  from within Linux.  To compile this driver as a module, choose
 	  M here; the module will be called tpm_tis.
 
+config TCG_TIS_I2C_INFINEON
+	tristate "TPM Interface Specification 1.2 Interface (I2C - Infineon)"
+	depends on I2C
+	---help---
+	  If you have a TPM security chip that is compliant with the
+	  TCG TIS 1.2 TPM specification and Infineon's I2C Protocol Stack
+	  Specification 0.20 say Yes and it will be accessible from within
+	  Linux.
+	  To compile this driver as a module, choose M here; the module
+	  will be called tpm_tis_i2c_infineon.
+
 config TCG_NSC
 	tristate "National Semiconductor TPM Interface"
 	depends on X86
@@ -62,4 +73,12 @@ config TCG_INFINEON
 	  Further information on this driver and the supported hardware
 	  can be found at http://www.trust.rub.de/projects/linux-device-driver-infineon-tpm/ 
 
+config TCG_IBMVTPM
+	tristate "IBM VTPM Interface"
+	depends on PPC64
+	---help---
+	  If you have IBM virtual TPM (VTPM) support say Yes and it
+	  will be accessible from within Linux.  To compile this driver
+	  as a module, choose M here; the module will be called tpm_ibmvtpm.
+
 endif # TCG_TPM
diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile
index ea3a1e02a82..5b3fc8bc6c1 100644
--- a/drivers/char/tpm/Makefile
+++ b/drivers/char/tpm/Makefile
@@ -4,8 +4,16 @@
 obj-$(CONFIG_TCG_TPM) += tpm.o
 ifdef CONFIG_ACPI
 	obj-$(CONFIG_TCG_TPM) += tpm_bios.o
+	tpm_bios-objs += tpm_eventlog.o tpm_acpi.o tpm_ppi.o
+else
+ifdef CONFIG_TCG_IBMVTPM
+	obj-$(CONFIG_TCG_TPM) += tpm_bios.o
+	tpm_bios-objs += tpm_eventlog.o tpm_of.o
+endif
 endif
 obj-$(CONFIG_TCG_TIS) += tpm_tis.o
+obj-$(CONFIG_TCG_TIS_I2C_INFINEON) += tpm_i2c_infineon.o
 obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
 obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
 obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o
+obj-$(CONFIG_TCG_IBMVTPM) += tpm_ibmvtpm.o
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 3af9f4d1a23..f26afdb1a70 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -30,12 +30,7 @@
 #include <linux/freezer.h>
 
 #include "tpm.h"
-
-enum tpm_const {
-	TPM_MINOR = 224,	/* officially assigned */
-	TPM_BUFSIZE = 4096,
-	TPM_NUM_DEVICES = 256,
-};
+#include "tpm_eventlog.h"
 
 enum tpm_duration {
 	TPM_SHORT = 0,
@@ -482,6 +477,7 @@ static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd,
 #define TPM_INTERNAL_RESULT_SIZE 200
 #define TPM_TAG_RQU_COMMAND cpu_to_be16(193)
 #define TPM_ORD_GET_CAP cpu_to_be32(101)
+#define TPM_ORD_GET_RANDOM cpu_to_be32(70)
 
 static const struct tpm_input_header tpm_getcap_header = {
 	.tag = TPM_TAG_RQU_COMMAND,
@@ -919,7 +915,7 @@ EXPORT_SYMBOL_GPL(tpm_show_pcrs);
 
 #define  READ_PUBEK_RESULT_SIZE 314
 #define TPM_ORD_READPUBEK cpu_to_be32(124)
-struct tpm_input_header tpm_readpubek_header = {
+static struct tpm_input_header tpm_readpubek_header = {
 	.tag = TPM_TAG_RQU_COMMAND,
 	.length = cpu_to_be32(30),
 	.ordinal = TPM_ORD_READPUBEK
@@ -1175,7 +1171,7 @@ int tpm_release(struct inode *inode, struct file *file)
 	flush_work(&chip->work);
 	file->private_data = NULL;
 	atomic_set(&chip->data_pending, 0);
-	kfree(chip->data_buffer);
+	kzfree(chip->data_buffer);
 	clear_bit(0, &chip->is_open);
 	put_device(chip->dev);
 	return 0;
@@ -1227,7 +1223,6 @@ ssize_t tpm_read(struct file *file, char __user *buf,
 	del_singleshot_timer_sync(&chip->user_read_timer);
 	flush_work(&chip->work);
 	ret_size = atomic_read(&chip->data_pending);
-	atomic_set(&chip->data_pending, 0);
 	if (ret_size > 0) {	/* relay data */
 		ssize_t orig_ret_size = ret_size;
 		if (size < ret_size)
@@ -1242,6 +1237,8 @@ ssize_t tpm_read(struct file *file, char __user *buf,
 		mutex_unlock(&chip->buffer_mutex);
 	}
 
+	atomic_set(&chip->data_pending, 0);
+
 	return ret_size;
 }
 EXPORT_SYMBOL_GPL(tpm_read);
@@ -1326,6 +1323,58 @@ int tpm_pm_resume(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(tpm_pm_resume);
 
+#define TPM_GETRANDOM_RESULT_SIZE	18
+static struct tpm_input_header tpm_getrandom_header = {
+	.tag = TPM_TAG_RQU_COMMAND,
+	.length = cpu_to_be32(14),
+	.ordinal = TPM_ORD_GET_RANDOM
+};
+
+/**
+ * tpm_get_random() - Get random bytes from the tpm's RNG
+ * @chip_num: A specific chip number for the request or TPM_ANY_NUM
+ * @out: destination buffer for the random bytes
+ * @max: the max number of bytes to write to @out
+ *
+ * Returns < 0 on error and the number of bytes read on success
+ */
+int tpm_get_random(u32 chip_num, u8 *out, size_t max)
+{
+	struct tpm_chip *chip;
+	struct tpm_cmd_t tpm_cmd;
+	u32 recd, num_bytes = min_t(u32, max, TPM_MAX_RNG_DATA);
+	int err, total = 0, retries = 5;
+	u8 *dest = out;
+
+	chip = tpm_chip_find_get(chip_num);
+	if (chip == NULL)
+		return -ENODEV;
+
+	if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
+		return -EINVAL;
+
+	do {
+		tpm_cmd.header.in = tpm_getrandom_header;
+		tpm_cmd.params.getrandom_in.num_bytes = cpu_to_be32(num_bytes);
+
+		err = transmit_cmd(chip, &tpm_cmd,
+				   TPM_GETRANDOM_RESULT_SIZE + num_bytes,
+				   "attempting get random");
+		if (err)
+			break;
+
+		recd = be32_to_cpu(tpm_cmd.params.getrandom_out.rng_data_len);
+		memcpy(dest, tpm_cmd.params.getrandom_out.rng_data, recd);
+
+		dest += recd;
+		total += recd;
+		num_bytes -= recd;
+	} while (retries-- && total < max);
+
+	return total ? total : -EIO;
+}
+EXPORT_SYMBOL_GPL(tpm_get_random);
+
 /* In case vendor provided release function, call it too.*/
 
 void tpm_dev_vendor_release(struct tpm_chip *chip)
@@ -1346,7 +1395,7 @@ EXPORT_SYMBOL_GPL(tpm_dev_vendor_release);
  * Once all references to platform device are down to 0,
  * release all allocated structures.
  */
-void tpm_dev_release(struct device *dev)
+static void tpm_dev_release(struct device *dev)
 {
 	struct tpm_chip *chip = dev_get_drvdata(dev);
 
@@ -1427,6 +1476,11 @@ struct tpm_chip *tpm_register_hardware(struct device *dev,
 		goto put_device;
 	}
 
+	if (sys_add_ppi(&dev->kobj)) {
+		misc_deregister(&chip->vendor.miscdev);
+		goto put_device;
+	}
+
 	chip->bios_dir = tpm_bios_log_setup(devname);
 
 	/* Make chip available */
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 917f727e674..02c266aa2bf 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -28,6 +28,12 @@
 #include <linux/io.h>
 #include <linux/tpm.h>
 
+enum tpm_const {
+	TPM_MINOR = 224,	/* officially assigned */
+	TPM_BUFSIZE = 4096,
+	TPM_NUM_DEVICES = 256,
+};
+
 enum tpm_timeout {
 	TPM_TIMEOUT = 5,	/* msecs */
 };
@@ -94,6 +100,7 @@ struct tpm_vendor_specific {
 	bool timeout_adjusted;
 	unsigned long duration[3]; /* jiffies */
 	bool duration_adjusted;
+	void *data;
 
 	wait_queue_head_t read_queue;
 	wait_queue_head_t int_queue;
@@ -269,6 +276,21 @@ struct tpm_pcrextend_in {
 	u8	hash[TPM_DIGEST_SIZE];
 }__attribute__((packed));
 
+/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
+ * bytes, but 128 is still a relatively large number of random bytes and
+ * anything much bigger causes users of struct tpm_cmd_t to start getting
+ * compiler warnings about stack frame size. */
+#define TPM_MAX_RNG_DATA	128
+
+struct tpm_getrandom_out {
+	__be32 rng_data_len;
+	u8     rng_data[TPM_MAX_RNG_DATA];
+}__attribute__((packed));
+
+struct tpm_getrandom_in {
+	__be32 num_bytes;
+}__attribute__((packed));
+
 typedef union {
 	struct	tpm_getcap_params_out getcap_out;
 	struct	tpm_readpubek_params_out readpubek_out;
@@ -277,6 +299,8 @@ typedef union {
 	struct	tpm_pcrread_in	pcrread_in;
 	struct	tpm_pcrread_out	pcrread_out;
 	struct	tpm_pcrextend_in pcrextend_in;
+	struct	tpm_getrandom_in getrandom_in;
+	struct	tpm_getrandom_out getrandom_out;
 } tpm_cmd_params;
 
 struct tpm_cmd_t {
@@ -303,15 +327,12 @@ extern int tpm_pm_suspend(struct device *);
 extern int tpm_pm_resume(struct device *);
 extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
 			     wait_queue_head_t *);
+
 #ifdef CONFIG_ACPI
-extern struct dentry ** tpm_bios_log_setup(char *);
-extern void tpm_bios_log_teardown(struct dentry **);
+extern ssize_t sys_add_ppi(struct kobject *parent);
 #else
-static inline struct dentry ** tpm_bios_log_setup(char *name)
-{
-	return NULL;
-}
-static inline void tpm_bios_log_teardown(struct dentry **dir)
+static inline ssize_t sys_add_ppi(struct kobject *parent)
 {
+	return 0;
 }
 #endif
diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
new file mode 100644
index 00000000000..56051d0c97a
--- /dev/null
+++ b/drivers/char/tpm/tpm_acpi.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2005 IBM Corporation
+ *
+ * Authors:
+ *	Seiji Munetoh <munetoh@jp.ibm.com>
+ *	Stefan Berger <stefanb@us.ibm.com>
+ *	Reiner Sailer <sailer@watson.ibm.com>
+ *	Kylene Hall <kjhall@us.ibm.com>
+ *
+ * Maintained by: <tpmdd-devel@lists.sourceforge.net>
+ *
+ * Access to the eventlog extended by the TCG BIOS of PC platform
+ *
+ * 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.
+ *
+ */
+
+#include <linux/seq_file.h>
+#include <linux/fs.h>
+#include <linux/security.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <acpi/acpi.h>
+
+#include "tpm.h"
+#include "tpm_eventlog.h"
+
+struct acpi_tcpa {
+	struct acpi_table_header hdr;
+	u16 platform_class;
+	union {
+		struct client_hdr {
+			u32 log_max_len __attribute__ ((packed));
+			u64 log_start_addr __attribute__ ((packed));
+		} client;
+		struct server_hdr {
+			u16 reserved;
+			u64 log_max_len __attribute__ ((packed));
+			u64 log_start_addr __attribute__ ((packed));
+		} server;
+	};
+};
+
+/* read binary bios log */
+int read_log(struct tpm_bios_log *log)
+{
+	struct acpi_tcpa *buff;
+	acpi_status status;
+	void __iomem *virt;
+	u64 len, start;
+
+	if (log->bios_event_log != NULL) {
+		printk(KERN_ERR
+		       "%s: ERROR - Eventlog already initialized\n",
+		       __func__);
+		return -EFAULT;
+	}
+
+	/* Find TCPA entry in RSDT (ACPI_LOGICAL_ADDRESSING) */
+	status = acpi_get_table(ACPI_SIG_TCPA, 1,
+				(struct acpi_table_header **)&buff);
+
+	if (ACPI_FAILURE(status)) {
+		printk(KERN_ERR "%s: ERROR - Could not get TCPA table\n",
+		       __func__);
+		return -EIO;
+	}
+
+	switch(buff->platform_class) {
+	case BIOS_SERVER:
+		len = buff->server.log_max_len;
+		start = buff->server.log_start_addr;
+		break;
+	case BIOS_CLIENT:
+	default:
+		len = buff->client.log_max_len;
+		start = buff->client.log_start_addr;
+		break;
+	}
+	if (!len) {
+		printk(KERN_ERR "%s: ERROR - TCPA log area empty\n", __func__);
+		return -EIO;
+	}
+
+	/* malloc EventLog space */
+	log->bios_event_log = kmalloc(len, GFP_KERNEL);
+	if (!log->bios_event_log) {
+		printk("%s: ERROR - Not enough  Memory for BIOS measurements\n",
+			__func__);
+		return -ENOMEM;
+	}
+
+	log->bios_event_log_end = log->bios_event_log + len;
+
+	virt = acpi_os_map_memory(start, len);
+	if (!virt) {
+		kfree(log->bios_event_log);
+		printk("%s: ERROR - Unable to map memory\n", __func__);
+		return -EIO;
+	}
+
+	memcpy_fromio(log->bios_event_log, virt, len);
+
+	acpi_os_unmap_memory(virt, len);
+	return 0;
+}
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_eventlog.c
index 0636520fa9b..84ddc557b8f 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_eventlog.c
@@ -1,7 +1,8 @@
 /*
- * Copyright (C) 2005 IBM Corporation
+ * Copyright (C) 2005, 2012 IBM Corporation
  *
  * Authors:
+ *	Kent Yoder <key@linux.vnet.ibm.com>
  *	Seiji Munetoh <munetoh@jp.ibm.com>
  *	Stefan Berger <stefanb@us.ibm.com>
  *	Reiner Sailer <sailer@watson.ibm.com>
@@ -9,7 +10,7 @@
  *
  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
  *
- * Access to the eventlog extended by the TCG BIOS of PC platform
+ * Access to the eventlog created by a system's firmware / BIOS
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -23,67 +24,10 @@
 #include <linux/security.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <acpi/acpi.h>
-#include "tpm.h"
-
-#define TCG_EVENT_NAME_LEN_MAX	255
-#define MAX_TEXT_EVENT		1000	/* Max event string length */
-#define ACPI_TCPA_SIG		"TCPA"	/* 0x41504354 /'TCPA' */
-
-enum bios_platform_class {
-	BIOS_CLIENT = 0x00,
-	BIOS_SERVER = 0x01,
-};
-
-struct tpm_bios_log {
-	void *bios_event_log;
-	void *bios_event_log_end;
-};
-
-struct acpi_tcpa {
-	struct acpi_table_header hdr;
-	u16 platform_class;
-	union {
-		struct client_hdr {
-			u32 log_max_len __attribute__ ((packed));
-			u64 log_start_addr __attribute__ ((packed));
-		} client;
-		struct server_hdr {
-			u16 reserved;
-			u64 log_max_len __attribute__ ((packed));
-			u64 log_start_addr __attribute__ ((packed));
-		} server;
-	};
-};
 
-struct tcpa_event {
-	u32 pcr_index;
-	u32 event_type;
-	u8 pcr_value[20];	/* SHA1 */
-	u32 event_size;
-	u8 event_data[0];
-};
+#include "tpm.h"
+#include "tpm_eventlog.h"
 
-enum tcpa_event_types {
-	PREBOOT = 0,
-	POST_CODE,
-	UNUSED,
-	NO_ACTION,
-	SEPARATOR,
-	ACTION,
-	EVENT_TAG,
-	SCRTM_CONTENTS,
-	SCRTM_VERSION,
-	CPU_MICROCODE,
-	PLATFORM_CONFIG_FLAGS,
-	TABLE_OF_DEVICES,
-	COMPACT_HASH,
-	IPL,
-	IPL_PARTITION_DATA,
-	NONHOST_CODE,
-	NONHOST_CONFIG,
-	NONHOST_INFO,
-};
 
 static const char* tcpa_event_type_strings[] = {
 	"PREBOOT",
@@ -106,28 +50,6 @@ static const char* tcpa_event_type_strings[] = {
 	"Non-Host Info"
 };
 
-struct tcpa_pc_event {
-	u32 event_id;
-	u32 event_size;
-	u8 event_data[0];
-};
-
-enum tcpa_pc_event_ids {
-	SMBIOS = 1,
-	BIS_CERT,
-	POST_BIOS_ROM,
-	ESCD,
-	CMOS,
-	NVRAM,
-	OPTION_ROM_EXEC,
-	OPTION_ROM_CONFIG,
-	OPTION_ROM_MICROCODE = 10,
-	S_CRTM_VERSION,
-	S_CRTM_CONTENTS,
-	POST_CONTENTS,
-	HOST_TABLE_OF_DEVICES,
-};
-
 static const char* tcpa_pc_event_id_strings[] = {
 	"",
 	"SMBIOS",
@@ -358,65 +280,6 @@ static const struct seq_operations tpm_binary_b_measurments_seqops = {
 	.show = tpm_binary_bios_measurements_show,
 };
 
-/* read binary bios log */
-static int read_log(struct tpm_bios_log *log)
-{
-	struct acpi_tcpa *buff;
-	acpi_status status;
-	struct acpi_table_header *virt;
-	u64 len, start;
-
-	if (log->bios_event_log != NULL) {
-		printk(KERN_ERR
-		       "%s: ERROR - Eventlog already initialized\n",
-		       __func__);
-		return -EFAULT;
-	}
-
-	/* Find TCPA entry in RSDT (ACPI_LOGICAL_ADDRESSING) */
-	status = acpi_get_table(ACPI_SIG_TCPA, 1,
-				(struct acpi_table_header **)&buff);
-
-	if (ACPI_FAILURE(status)) {
-		printk(KERN_ERR "%s: ERROR - Could not get TCPA table\n",
-		       __func__);
-		return -EIO;
-	}
-
-	switch(buff->platform_class) {
-	case BIOS_SERVER:
-		len = buff->server.log_max_len;
-		start = buff->server.log_start_addr;
-		break;
-	case BIOS_CLIENT:
-	default:
-		len = buff->client.log_max_len;
-		start = buff->client.log_start_addr;
-		break;
-	}
-	if (!len) {
-		printk(KERN_ERR "%s: ERROR - TCPA log area empty\n", __func__);
-		return -EIO;
-	}
-
-	/* malloc EventLog space */
-	log->bios_event_log = kmalloc(len, GFP_KERNEL);
-	if (!log->bios_event_log) {
-		printk("%s: ERROR - Not enough  Memory for BIOS measurements\n",
-			__func__);
-		return -ENOMEM;
-	}
-
-	log->bios_event_log_end = log->bios_event_log + len;
-
-	virt = acpi_os_map_memory(start, len);
-
-	memcpy(log->bios_event_log, virt, len);
-
-	acpi_os_unmap_memory(virt, len);
-	return 0;
-}
-
 static int tpm_ascii_bios_measurements_open(struct inode *inode,
 					    struct file *file)
 {
diff --git a/drivers/char/tpm/tpm_eventlog.h b/drivers/char/tpm/tpm_eventlog.h
new file mode 100644
index 00000000000..e7da086d692
--- /dev/null
+++ b/drivers/char/tpm/tpm_eventlog.h
@@ -0,0 +1,86 @@
+
+#ifndef __TPM_EVENTLOG_H__
+#define __TPM_EVENTLOG_H__
+
+#define TCG_EVENT_NAME_LEN_MAX	255
+#define MAX_TEXT_EVENT		1000	/* Max event string length */
+#define ACPI_TCPA_SIG		"TCPA"	/* 0x41504354 /'TCPA' */
+
+enum bios_platform_class {
+	BIOS_CLIENT = 0x00,
+	BIOS_SERVER = 0x01,
+};
+
+struct tpm_bios_log {
+	void *bios_event_log;
+	void *bios_event_log_end;
+};
+
+struct tcpa_event {
+	u32 pcr_index;
+	u32 event_type;
+	u8 pcr_value[20];	/* SHA1 */
+	u32 event_size;
+	u8 event_data[0];
+};
+
+enum tcpa_event_types {
+	PREBOOT = 0,
+	POST_CODE,
+	UNUSED,
+	NO_ACTION,
+	SEPARATOR,
+	ACTION,
+	EVENT_TAG,
+	SCRTM_CONTENTS,
+	SCRTM_VERSION,
+	CPU_MICROCODE,
+	PLATFORM_CONFIG_FLAGS,
+	TABLE_OF_DEVICES,
+	COMPACT_HASH,
+	IPL,
+	IPL_PARTITION_DATA,
+	NONHOST_CODE,
+	NONHOST_CONFIG,
+	NONHOST_INFO,
+};
+
+struct tcpa_pc_event {
+	u32 event_id;
+	u32 event_size;
+	u8 event_data[0];
+};
+
+enum tcpa_pc_event_ids {
+	SMBIOS = 1,
+	BIS_CERT,
+	POST_BIOS_ROM,
+	ESCD,
+	CMOS,
+	NVRAM,
+	OPTION_ROM_EXEC,
+	OPTION_ROM_CONFIG,
+	OPTION_ROM_MICROCODE = 10,
+	S_CRTM_VERSION,
+	S_CRTM_CONTENTS,
+	POST_CONTENTS,
+	HOST_TABLE_OF_DEVICES,
+};
+
+int read_log(struct tpm_bios_log *log);
+
+#if defined(CONFIG_TCG_IBMVTPM) || defined(CONFIG_TCG_IBMVTPM_MODULE) || \
+	defined(CONFIG_ACPI)
+extern struct dentry **tpm_bios_log_setup(char *);
+extern void tpm_bios_log_teardown(struct dentry **);
+#else
+static inline struct dentry **tpm_bios_log_setup(char *name)
+{
+	return NULL;
+}
+static inline void tpm_bios_log_teardown(struct dentry **dir)
+{
+}
+#endif
+
+#endif
diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c
new file mode 100644
index 00000000000..5a831aec9d4
--- /dev/null
+++ b/drivers/char/tpm/tpm_i2c_infineon.c
@@ -0,0 +1,695 @@
+/*
+ * Copyright (C) 2012 Infineon Technologies
+ *
+ * Authors:
+ * Peter Huewe <peter.huewe@infineon.com>
+ *
+ * Device driver for TCG/TCPA TPM (trusted platform module).
+ * Specifications at www.trustedcomputinggroup.org
+ *
+ * This device driver implements the TPM interface as defined in
+ * the TCG TPM Interface Spec version 1.2, revision 1.0 and the
+ * Infineon I2C Protocol Stack Specification v0.20.
+ *
+ * It is based on the original tpm_tis device driver from Leendert van
+ * Dorn and Kyleen Hall.
+ *
+ * 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, version 2 of the
+ * License.
+ *
+ *
+ */
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/wait.h>
+#include "tpm.h"
+
+/* max. buffer size supported by our TPM */
+#define TPM_BUFSIZE 1260
+
+/* max. number of iterations after I2C NAK */
+#define MAX_COUNT 3
+
+#define SLEEP_DURATION_LOW 55
+#define SLEEP_DURATION_HI 65
+
+/* max. number of iterations after I2C NAK for 'long' commands
+ * we need this especially for sending TPM_READY, since the cleanup after the
+ * transtion to the ready state may take some time, but it is unpredictable
+ * how long it will take.
+ */
+#define MAX_COUNT_LONG 50
+
+#define SLEEP_DURATION_LONG_LOW 200
+#define SLEEP_DURATION_LONG_HI 220
+
+/* After sending TPM_READY to 'reset' the TPM we have to sleep even longer */
+#define SLEEP_DURATION_RESET_LOW 2400
+#define SLEEP_DURATION_RESET_HI 2600
+
+/* we want to use usleep_range instead of msleep for the 5ms TPM_TIMEOUT */
+#define TPM_TIMEOUT_US_LOW (TPM_TIMEOUT * 1000)
+#define TPM_TIMEOUT_US_HI  (TPM_TIMEOUT_US_LOW + 2000)
+
+/* expected value for DIDVID register */
+#define TPM_TIS_I2C_DID_VID 0x000b15d1L
+
+/* Structure to store I2C TPM specific stuff */
+struct tpm_inf_dev {
+	struct i2c_client *client;
+	u8 buf[TPM_BUFSIZE + sizeof(u8)]; /* max. buffer size + addr */
+	struct tpm_chip *chip;
+};
+
+static struct tpm_inf_dev tpm_dev;
+static struct i2c_driver tpm_tis_i2c_driver;
+
+/*
+ * iic_tpm_read() - read from TPM register
+ * @addr: register address to read from
+ * @buffer: provided by caller
+ * @len: number of bytes to read
+ *
+ * Read len bytes from TPM register and put them into
+ * buffer (little-endian format, i.e. first byte is put into buffer[0]).
+ *
+ * NOTE: TPM is big-endian for multi-byte values. Multi-byte
+ * values have to be swapped.
+ *
+ * NOTE: We can't unfortunately use the combined read/write functions
+ * provided by the i2c core as the TPM currently does not support the
+ * repeated start condition and due to it's special requirements.
+ * The i2c_smbus* functions do not work for this chip.
+ *
+ * Return -EIO on error, 0 on success.
+ */
+static int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
+{
+
+	struct i2c_msg msg1 = { tpm_dev.client->addr, 0, 1, &addr };
+	struct i2c_msg msg2 = { tpm_dev.client->addr, I2C_M_RD, len, buffer };
+
+	int rc;
+	int count;
+
+	/* Lock the adapter for the duration of the whole sequence. */
+	if (!tpm_dev.client->adapter->algo->master_xfer)
+		return -EOPNOTSUPP;
+	i2c_lock_adapter(tpm_dev.client->adapter);
+
+	for (count = 0; count < MAX_COUNT; count++) {
+		rc = __i2c_transfer(tpm_dev.client->adapter, &msg1, 1);
+		if (rc > 0)
+			break;	/* break here to skip sleep */
+
+		usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
+	}
+
+	if (rc <= 0)
+		goto out;
+
+	/* After the TPM has successfully received the register address it needs
+	 * some time, thus we're sleeping here again, before retrieving the data
+	 */
+	for (count = 0; count < MAX_COUNT; count++) {
+		usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
+		rc = __i2c_transfer(tpm_dev.client->adapter, &msg2, 1);
+		if (rc > 0)
+			break;
+
+	}
+
+out:
+	i2c_unlock_adapter(tpm_dev.client->adapter);
+	if (rc <= 0)
+		return -EIO;
+
+	return 0;
+}
+
+static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
+				 unsigned int sleep_low,
+				 unsigned int sleep_hi, u8 max_count)
+{
+	int rc = -EIO;
+	int count;
+
+	struct i2c_msg msg1 = { tpm_dev.client->addr, 0, len + 1, tpm_dev.buf };
+
+	if (len > TPM_BUFSIZE)
+		return -EINVAL;
+
+	if (!tpm_dev.client->adapter->algo->master_xfer)
+		return -EOPNOTSUPP;
+	i2c_lock_adapter(tpm_dev.client->adapter);
+
+	/* prepend the 'register address' to the buffer */
+	tpm_dev.buf[0] = addr;
+	memcpy(&(tpm_dev.buf[1]), buffer, len);
+
+	/*
+	 * NOTE: We have to use these special mechanisms here and unfortunately
+	 * cannot rely on the standard behavior of i2c_transfer.
+	 */
+	for (count = 0; count < max_count; count++) {
+		rc = __i2c_transfer(tpm_dev.client->adapter, &msg1, 1);
+		if (rc > 0)
+			break;
+
+		usleep_range(sleep_low, sleep_hi);
+	}
+
+	i2c_unlock_adapter(tpm_dev.client->adapter);
+	if (rc <= 0)
+		return -EIO;
+
+	return 0;
+}
+
+/*
+ * iic_tpm_write() - write to TPM register
+ * @addr: register address to write to
+ * @buffer: containing data to be written
+ * @len: number of bytes to write
+ *
+ * Write len bytes from provided buffer to TPM register (little
+ * endian format, i.e. buffer[0] is written as first byte).
+ *
+ * NOTE: TPM is big-endian for multi-byte values. Multi-byte
+ * values have to be swapped.
+ *
+ * NOTE: use this function instead of the iic_tpm_write_generic function.
+ *
+ * Return -EIO on error, 0 on success
+ */
+static int iic_tpm_write(u8 addr, u8 *buffer, size_t len)
+{
+	return iic_tpm_write_generic(addr, buffer, len, SLEEP_DURATION_LOW,
+				     SLEEP_DURATION_HI, MAX_COUNT);
+}
+
+/*
+ * This function is needed especially for the cleanup situation after
+ * sending TPM_READY
+ * */
+static int iic_tpm_write_long(u8 addr, u8 *buffer, size_t len)
+{
+	return iic_tpm_write_generic(addr, buffer, len, SLEEP_DURATION_LONG_LOW,
+				     SLEEP_DURATION_LONG_HI, MAX_COUNT_LONG);
+}
+
+enum tis_access {
+	TPM_ACCESS_VALID = 0x80,
+	TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
+	TPM_ACCESS_REQUEST_PENDING = 0x04,
+	TPM_ACCESS_REQUEST_USE = 0x02,
+};
+
+enum tis_status {
+	TPM_STS_VALID = 0x80,
+	TPM_STS_COMMAND_READY = 0x40,
+	TPM_STS_GO = 0x20,
+	TPM_STS_DATA_AVAIL = 0x10,
+	TPM_STS_DATA_EXPECT = 0x08,
+};
+
+enum tis_defaults {
+	TIS_SHORT_TIMEOUT = 750,	/* ms */
+	TIS_LONG_TIMEOUT = 2000,	/* 2 sec */
+};
+
+#define	TPM_ACCESS(l)			(0x0000 | ((l) << 4))
+#define	TPM_STS(l)			(0x0001 | ((l) << 4))
+#define	TPM_DATA_FIFO(l)		(0x0005 | ((l) << 4))
+#define	TPM_DID_VID(l)			(0x0006 | ((l) << 4))