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[PATCH] tpm: add bios measurement log

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According to the TCG specifications measurements or hashes of the BIOS code
and data are extended into TPM PCRS and a log is kept in an ACPI table of
these extensions for later validation if desired.  This patch exports the
values in the ACPI table through a security-fs seq_file.

Signed-off-by: Seiji Munetoh <munetoh@jp.ibm.com>
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
Signed-off-by: Reiner Sailer <sailer@us.ibm.com>
Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Kylene Jo Hall
2006-01-08 01:03:15 -08:00
committed by Linus Torvalds
parent 485a6435ab
commit 55a82ab318
5 changed files with 531 additions and 0 deletions
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3
drivers/char/tpm/tpm.c
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@@ -466,6 +466,7 @@ void tpm_remove_hardware(struct device *dev)
kfree(chip->vendor->miscdev.name);
sysfs_remove_group(&dev->kobj, chip->vendor->attr_group);
tpm_bios_log_teardown(chip->bios_dir);
dev_mask[chip->dev_num / TPM_NUM_MASK_ENTRIES ] &=
~(1 << (chip->dev_num % TPM_NUM_MASK_ENTRIES));
@@ -593,6 +594,8 @@ dev_num_search_complete:
sysfs_create_group(&dev->kobj, chip->vendor->attr_group);
chip->bios_dir = tpm_bios_log_setup(devname);
return 0;
}
EXPORT_SYMBOL_GPL(tpm_register_hardware);