Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull TPM updates from James Morris: - Migrate away from PM runtime as explicit cmdReady/goIdle transactions for every command is a spec requirement. PM runtime adds only a layer of complexity on our case. - tpm_tis drivers can now specify the hwrng quality. - TPM 2.0 code uses now tpm_buf for constructing messages. Jarkko thinks Tomas Winkler has done the same for TPM 1.2, and will start digging those changes from the patchwork in the near future. - Bug fixes and clean ups * 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead ima: Use tpm_default_chip() and call TPM functions with a tpm_chip tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED tpm: Convert tpm_find_get_ops() to use tpm_default_chip() tpm: Implement tpm_default_chip() to find a TPM chip tpm: rename tpm_chip_find_get() to tpm_find_get_ops() tpm: Allow tpm_tis drivers to set hwrng quality. tpm: Return the actual size when receiving an unsupported command tpm: separate cmd_ready/go_idle from runtime_pm tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) tpm_tis_spi: Pass the SPI IRQ down to the driver tpm: migrate tpm2_get_random() to use struct tpm_buf tpm: migrate tpm2_get_tpm_pt() to use struct tpm_buf tpm: migrate tpm2_probe() to use struct tpm_buf tpm: migrate tpm2_shutdown() to use struct tpm_buf
This commit is contained in:
Linus Torvalds
Коммит
c715ebeb03
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@ -81,42 +81,66 @@ void tpm_put_ops(struct tpm_chip *chip)
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EXPORT_SYMBOL_GPL(tpm_put_ops);
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/**
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* tpm_chip_find_get() - find and reserve a TPM chip
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* tpm_default_chip() - find a TPM chip and get a reference to it
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*/
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struct tpm_chip *tpm_default_chip(void)
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{
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struct tpm_chip *chip, *res = NULL;
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int chip_num = 0;
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int chip_prev;
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mutex_lock(&idr_lock);
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do {
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chip_prev = chip_num;
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chip = idr_get_next(&dev_nums_idr, &chip_num);
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if (chip) {
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get_device(&chip->dev);
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res = chip;
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break;
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}
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} while (chip_prev != chip_num);
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mutex_unlock(&idr_lock);
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return res;
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}
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EXPORT_SYMBOL_GPL(tpm_default_chip);
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/**
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* tpm_find_get_ops() - find and reserve a TPM chip
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* @chip: a &struct tpm_chip instance, %NULL for the default chip
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*
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* Finds a TPM chip and reserves its class device and operations. The chip must
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* be released with tpm_chip_put_ops() after use.
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* be released with tpm_put_ops() after use.
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* This function is for internal use only. It supports existing TPM callers
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* by accepting NULL, but those callers should be converted to pass in a chip
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* directly.
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*
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* Return:
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* A reserved &struct tpm_chip instance.
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* %NULL if a chip is not found.
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* %NULL if the chip is not available.
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*/
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struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip)
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struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip)
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{
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struct tpm_chip *res = NULL;
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int chip_num = 0;
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int chip_prev;
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int rc;
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mutex_lock(&idr_lock);
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if (!chip) {
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do {
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chip_prev = chip_num;
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chip = idr_get_next(&dev_nums_idr, &chip_num);
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if (chip && !tpm_try_get_ops(chip)) {
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res = chip;
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break;
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}
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} while (chip_prev != chip_num);
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} else {
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if (chip) {
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if (!tpm_try_get_ops(chip))
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res = chip;
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return chip;
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return NULL;
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}
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mutex_unlock(&idr_lock);
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return res;
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chip = tpm_default_chip();
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if (!chip)
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return NULL;
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rc = tpm_try_get_ops(chip);
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/* release additional reference we got from tpm_default_chip() */
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put_device(&chip->dev);
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if (rc)
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return NULL;
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return chip;
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}
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/**
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@ -29,7 +29,6 @@
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include <linux/freezer.h>
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#include <linux/pm_runtime.h>
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#include <linux/tpm_eventlog.h>
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#include "tpm.h"
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@ -369,10 +368,13 @@ err_len:
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return -EINVAL;
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}
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static int tpm_request_locality(struct tpm_chip *chip)
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static int tpm_request_locality(struct tpm_chip *chip, unsigned int flags)
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{
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int rc;
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if (flags & TPM_TRANSMIT_NESTED)
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return 0;
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if (!chip->ops->request_locality)
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return 0;
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@ -385,10 +387,13 @@ static int tpm_request_locality(struct tpm_chip *chip)
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return 0;
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}
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static void tpm_relinquish_locality(struct tpm_chip *chip)
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static void tpm_relinquish_locality(struct tpm_chip *chip, unsigned int flags)
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{
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int rc;
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if (flags & TPM_TRANSMIT_NESTED)
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return;
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if (!chip->ops->relinquish_locality)
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return;
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@ -399,6 +404,28 @@ static void tpm_relinquish_locality(struct tpm_chip *chip)
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chip->locality = -1;
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}
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static int tpm_cmd_ready(struct tpm_chip *chip, unsigned int flags)
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{
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if (flags & TPM_TRANSMIT_NESTED)
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return 0;
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if (!chip->ops->cmd_ready)
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return 0;
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return chip->ops->cmd_ready(chip);
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}
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static int tpm_go_idle(struct tpm_chip *chip, unsigned int flags)
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{
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if (flags & TPM_TRANSMIT_NESTED)
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return 0;
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if (!chip->ops->go_idle)
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return 0;
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return chip->ops->go_idle(chip);
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}
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static ssize_t tpm_try_transmit(struct tpm_chip *chip,
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struct tpm_space *space,
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u8 *buf, size_t bufsiz,
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@ -423,7 +450,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
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header->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
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header->return_code = cpu_to_be32(TPM2_RC_COMMAND_CODE |
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TSS2_RESMGR_TPM_RC_LAYER);
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return bufsiz;
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return sizeof(*header);
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}
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if (bufsiz > TPM_BUFSIZE)
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@ -439,24 +466,24 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
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return -E2BIG;
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}
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if (!(flags & TPM_TRANSMIT_UNLOCKED))
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if (!(flags & TPM_TRANSMIT_UNLOCKED) && !(flags & TPM_TRANSMIT_NESTED))
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mutex_lock(&chip->tpm_mutex);
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if (chip->ops->clk_enable != NULL)
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chip->ops->clk_enable(chip, true);
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/* Store the decision as chip->locality will be changed. */
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need_locality = chip->locality == -1;
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if (!(flags & TPM_TRANSMIT_RAW) && need_locality) {
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rc = tpm_request_locality(chip);
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if (need_locality) {
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rc = tpm_request_locality(chip, flags);
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if (rc < 0)
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goto out_no_locality;
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}
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if (chip->dev.parent)
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pm_runtime_get_sync(chip->dev.parent);
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rc = tpm_cmd_ready(chip, flags);
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if (rc)
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goto out;
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rc = tpm2_prepare_space(chip, space, ordinal, buf);
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if (rc)
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@ -516,19 +543,22 @@ out_recv:
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}
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rc = tpm2_commit_space(chip, space, ordinal, buf, &len);
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if (rc)
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dev_err(&chip->dev, "tpm2_commit_space: error %d\n", rc);
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out:
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if (chip->dev.parent)
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pm_runtime_put_sync(chip->dev.parent);
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rc = tpm_go_idle(chip, flags);
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if (rc)
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goto out;
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if (need_locality)
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tpm_relinquish_locality(chip);
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tpm_relinquish_locality(chip, flags);
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out_no_locality:
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if (chip->ops->clk_enable != NULL)
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chip->ops->clk_enable(chip, false);
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if (!(flags & TPM_TRANSMIT_UNLOCKED))
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if (!(flags & TPM_TRANSMIT_UNLOCKED) && !(flags & TPM_TRANSMIT_NESTED))
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mutex_unlock(&chip->tpm_mutex);
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return rc ? rc : len;
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}
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@ -930,7 +960,7 @@ int tpm_is_tpm2(struct tpm_chip *chip)
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{
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int rc;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip)
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return -ENODEV;
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@ -954,7 +984,7 @@ int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
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{
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int rc;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip)
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return -ENODEV;
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if (chip->flags & TPM_CHIP_FLAG_TPM2)
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@ -1013,7 +1043,7 @@ int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
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u32 count = 0;
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int i;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip)
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return -ENODEV;
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@ -1142,7 +1172,7 @@ int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
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{
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int rc;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip)
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return -ENODEV;
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@ -1262,7 +1292,7 @@ int tpm_get_random(struct tpm_chip *chip, u8 *out, size_t max)
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if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
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return -EINVAL;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip)
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return -ENODEV;
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@ -1324,7 +1354,7 @@ int tpm_seal_trusted(struct tpm_chip *chip, struct trusted_key_payload *payload,
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{
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int rc;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
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return -ENODEV;
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@ -1352,7 +1382,7 @@ int tpm_unseal_trusted(struct tpm_chip *chip,
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{
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int rc;
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chip = tpm_chip_find_get(chip);
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chip = tpm_find_get_ops(chip);
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if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
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return -ENODEV;
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@ -424,23 +424,24 @@ struct tpm_buf {
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u8 *data;
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};
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static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
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static inline void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal)
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{
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struct tpm_input_header *head;
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head = (struct tpm_input_header *)buf->data;
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head->tag = cpu_to_be16(tag);
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head->length = cpu_to_be32(sizeof(*head));
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head->ordinal = cpu_to_be32(ordinal);
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}
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static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
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{
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buf->data_page = alloc_page(GFP_HIGHUSER);
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if (!buf->data_page)
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return -ENOMEM;
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buf->flags = 0;
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buf->data = kmap(buf->data_page);
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head = (struct tpm_input_header *) buf->data;
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head->tag = cpu_to_be16(tag);
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head->length = cpu_to_be32(sizeof(*head));
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head->ordinal = cpu_to_be32(ordinal);
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tpm_buf_reset(buf, tag, ordinal);
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return 0;
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}
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|
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|
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@ -511,9 +512,17 @@ extern const struct file_operations tpm_fops;
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extern const struct file_operations tpmrm_fops;
|
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extern struct idr dev_nums_idr;
|
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|
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/**
|
||||
* enum tpm_transmit_flags - flags for tpm_transmit()
|
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*
|
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* @TPM_TRANSMIT_UNLOCKED: do not lock the chip
|
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* @TPM_TRANSMIT_NESTED: discard setup steps (power management,
|
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* locality) including locking (i.e. implicit
|
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* UNLOCKED)
|
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*/
|
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enum tpm_transmit_flags {
|
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TPM_TRANSMIT_UNLOCKED = BIT(0),
|
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TPM_TRANSMIT_RAW = BIT(1),
|
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TPM_TRANSMIT_NESTED = BIT(1),
|
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};
|
||||
|
||||
ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
|
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|
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@ -538,7 +547,7 @@ static inline void tpm_msleep(unsigned int delay_msec)
|
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delay_msec * 1000);
|
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};
|
||||
|
||||
struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip);
|
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struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
|
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__must_check int tpm_try_get_ops(struct tpm_chip *chip);
|
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void tpm_put_ops(struct tpm_chip *chip);
|
||||
|
||||
|
|
@ -569,7 +578,7 @@ static inline u32 tpm2_rc_value(u32 rc)
|
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int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
|
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int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, u32 count,
|
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struct tpm2_digest *digests);
|
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int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
|
||||
int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max);
|
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void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
|
||||
unsigned int flags);
|
||||
int tpm2_seal_trusted(struct tpm_chip *chip,
|
||||
|
|
|
|||
|
|
@ -27,46 +27,6 @@ enum tpm2_session_attributes {
|
|||
TPM2_SA_CONTINUE_SESSION = BIT(0),
|
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};
|
||||
|
||||
struct tpm2_startup_in {
|
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__be16 startup_type;
|
||||
} __packed;
|
||||
|
||||
struct tpm2_get_tpm_pt_in {
|
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__be32 cap_id;
|
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__be32 property_id;
|
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__be32 property_cnt;
|
||||
} __packed;
|
||||
|
||||
struct tpm2_get_tpm_pt_out {
|
||||
u8 more_data;
|
||||
__be32 subcap_id;
|
||||
__be32 property_cnt;
|
||||
__be32 property_id;
|
||||
__be32 value;
|
||||
} __packed;
|
||||
|
||||
struct tpm2_get_random_in {
|
||||
__be16 size;
|
||||
} __packed;
|
||||
|
||||
struct tpm2_get_random_out {
|
||||
__be16 size;
|
||||
u8 buffer[TPM_MAX_RNG_DATA];
|
||||
} __packed;
|
||||
|
||||
union tpm2_cmd_params {
|
||||
struct tpm2_startup_in startup_in;
|
||||
struct tpm2_get_tpm_pt_in get_tpm_pt_in;
|
||||
struct tpm2_get_tpm_pt_out get_tpm_pt_out;
|
||||
struct tpm2_get_random_in getrandom_in;
|
||||
struct tpm2_get_random_out getrandom_out;
|
||||
};
|
||||
|
||||
struct tpm2_cmd {
|
||||
tpm_cmd_header header;
|
||||
union tpm2_cmd_params params;
|
||||
} __packed;
|
||||
|
||||
struct tpm2_hash {
|
||||
unsigned int crypto_id;
|
||||
unsigned int tpm_id;
|
||||
|
|
@ -321,82 +281,72 @@ int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, u32 count,
|
|||
}
|
||||
|
||||
|
||||
#define TPM2_GETRANDOM_IN_SIZE \
|
||||
(sizeof(struct tpm_input_header) + \
|
||||
sizeof(struct tpm2_get_random_in))
|
||||
|
||||
static const struct tpm_input_header tpm2_getrandom_header = {
|
||||
.tag = cpu_to_be16(TPM2_ST_NO_SESSIONS),
|
||||
.length = cpu_to_be32(TPM2_GETRANDOM_IN_SIZE),
|
||||
.ordinal = cpu_to_be32(TPM2_CC_GET_RANDOM)
|
||||
};
|
||||
struct tpm2_get_random_out {
|
||||
__be16 size;
|
||||
u8 buffer[TPM_MAX_RNG_DATA];
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* tpm2_get_random() - get random bytes from the TPM RNG
|
||||
*
|
||||
* @chip: TPM chip to use
|
||||
* @out: destination buffer for the random bytes
|
||||
* @max: the max number of bytes to write to @out
|
||||
* @chip: a &tpm_chip instance
|
||||
* @dest: destination buffer
|
||||
* @max: the max number of random bytes to pull
|
||||
*
|
||||
* Return:
|
||||
* Size of the output buffer, or -EIO on error.
|
||||
* size of the buffer on success,
|
||||
* -errno otherwise
|
||||
*/
|
||||
int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max)
|
||||
int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
|
||||
{
|
||||
struct tpm2_cmd cmd;
|
||||
u32 recd, rlength;
|
||||
u32 num_bytes;
|
||||
struct tpm2_get_random_out *out;
|
||||
struct tpm_buf buf;
|
||||
u32 recd;
|
||||
u32 num_bytes = max;
|
||||
int err;
|
||||
int total = 0;
|
||||
int retries = 5;
|
||||
u8 *dest = out;
|
||||
u8 *dest_ptr = dest;
|
||||
|
||||
num_bytes = min_t(u32, max, sizeof(cmd.params.getrandom_out.buffer));
|
||||
|
||||
if (!out || !num_bytes ||
|
||||
max > sizeof(cmd.params.getrandom_out.buffer))
|
||||
if (!num_bytes || max > TPM_MAX_RNG_DATA)
|
||||
return -EINVAL;
|
||||
|
||||
do {
|
||||
cmd.header.in = tpm2_getrandom_header;
|
||||
cmd.params.getrandom_in.size = cpu_to_be16(num_bytes);
|
||||
err = tpm_buf_init(&buf, 0, 0);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd),
|
||||
do {
|
||||
tpm_buf_reset(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_GET_RANDOM);
|
||||
tpm_buf_append_u16(&buf, num_bytes);
|
||||
err = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE,
|
||||
offsetof(struct tpm2_get_random_out,
|
||||
buffer),
|
||||
0, "attempting get random");
|
||||
if (err)
|
||||
break;
|
||||
goto out;
|
||||
|
||||
recd = min_t(u32, be16_to_cpu(cmd.params.getrandom_out.size),
|
||||
num_bytes);
|
||||
rlength = be32_to_cpu(cmd.header.out.length);
|
||||
if (rlength < offsetof(struct tpm2_get_random_out, buffer) +
|
||||
recd)
|
||||
return -EFAULT;
|
||||
memcpy(dest, cmd.params.getrandom_out.buffer, recd);
|
||||
out = (struct tpm2_get_random_out *)
|
||||
&buf.data[TPM_HEADER_SIZE];
|
||||
recd = min_t(u32, be16_to_cpu(out->size), num_bytes);
|
||||
if (tpm_buf_length(&buf) <
|
||||
offsetof(struct tpm2_get_random_out, buffer) + recd) {
|
||||
err = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
memcpy(dest_ptr, out->buffer, recd);
|
||||
|
||||
dest += recd;
|
||||
dest_ptr += recd;
|
||||
total += recd;
|
||||
num_bytes -= recd;
|
||||
} while (retries-- && total < max);
|
||||
|
||||
tpm_buf_destroy(&buf);
|
||||
return total ? total : -EIO;
|
||||
out:
|
||||
tpm_buf_destroy(&buf);
|
||||
return err;
|
||||
}
|
||||
|
||||
#define TPM2_GET_TPM_PT_IN_SIZE \
|
||||
(sizeof(struct tpm_input_header) + \
|
||||
sizeof(struct tpm2_get_tpm_pt_in))
|
||||
|
||||
#define TPM2_GET_TPM_PT_OUT_BODY_SIZE \
|
||||
sizeof(struct tpm2_get_tpm_pt_out)
|
||||
|
||||
static const struct tpm_input_header tpm2_get_tpm_pt_header = {
|
||||
.tag = cpu_to_be16(TPM2_ST_NO_SESSIONS),
|
||||
.length = cpu_to_be32(TPM2_GET_TPM_PT_IN_SIZE),
|
||||
.ordinal = cpu_to_be32(TPM2_CC_GET_CAPABILITY)
|
||||
};
|
||||
|
||||
/**
|
||||
* tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
|
||||
* @chip: TPM chip to use
|
||||
|
|
@ -471,7 +421,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
|
|||
{
|
||||
unsigned int blob_len;
|
||||
struct tpm_buf buf;
|
||||
u32 hash, rlength;
|
||||
u32 hash;
|
||||
int i;
|
||||
int rc;
|
||||
|
||||
|
|
@ -546,8 +496,7 @@ int tpm2_seal_trusted(struct tpm_chip *chip,
|
|||
rc = -E2BIG;
|
||||
goto out;
|
||||
}
|
||||
rlength = be32_to_cpu(((struct tpm2_cmd *)&buf)->header.out.length);
|
||||
if (rlength < TPM_HEADER_SIZE + 4 + blob_len) {
|
||||
if (tpm_buf_length(&buf) < TPM_HEADER_SIZE + 4 + blob_len) {
|
||||
rc = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
|
@ -657,7 +606,6 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip,
|
|||
u16 data_len;
|
||||
u8 *data;
|
||||
int rc;
|
||||
u32 rlength;
|
||||
|
||||
rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_UNSEAL);
|
||||
if (rc)
|
||||
|
|
@ -685,9 +633,7 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip,
|
|||
goto out;
|
||||
}
|
||||
|
||||
rlength = be32_to_cpu(((struct tpm2_cmd *)&buf)
|
||||
->header.out.length);
|
||||
if (rlength < TPM_HEADER_SIZE + 6 + data_len) {
|
||||
if (tpm_buf_length(&buf) < TPM_HEADER_SIZE + 6 + data_len) {
|
||||
rc = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
|
@ -733,69 +679,71 @@ out:
|
|||
return rc;
|
||||
}
|
||||
|
||||
struct tpm2_get_cap_out {
|
||||
u8 more_data;
|
||||
__be32 subcap_id;
|
||||
__be32 property_cnt;
|
||||
__be32 property_id;
|
||||
__be32 value;
|
||||
} __packed;
|
||||
|
||||
/**
|
||||
* tpm2_get_tpm_pt() - get value of a TPM_CAP_TPM_PROPERTIES type property
|
||||
* @chip: TPM chip to use.
|
||||
* @chip: a &tpm_chip instance
|
||||
* @property_id: property ID.
|
||||
* @value: output variable.
|
||||
* @desc: passed to tpm_transmit_cmd()
|
||||
*
|
||||
* Return: Same as with tpm_transmit_cmd.
|
||||
* Return:
|
||||
* 0 on success,
|
||||
* -errno or a TPM return code otherwise
|
||||
*/
|
||||
ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, u32 *value,
|
||||
const char *desc)
|
||||
{
|
||||
struct tpm2_cmd cmd;
|
||||
struct tpm2_get_cap_out *out;
|
||||
struct tpm_buf buf;
|
||||
int rc;
|
||||
|
||||
cmd.header.in = tpm2_get_tpm_pt_header;
|
||||
cmd.params.get_tpm_pt_in.cap_id = cpu_to_be32(TPM2_CAP_TPM_PROPERTIES);
|
||||
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(property_id);
|
||||
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd),
|
||||
TPM2_GET_TPM_PT_OUT_BODY_SIZE, 0, desc);
|
||||
if (!rc)
|
||||
*value = be32_to_cpu(cmd.params.get_tpm_pt_out.value);
|
||||
|
||||
rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_GET_CAPABILITY);
|
||||
if (rc)
|
||||
return rc;
|
||||
tpm_buf_append_u32(&buf, TPM2_CAP_TPM_PROPERTIES);
|
||||
tpm_buf_append_u32(&buf, property_id);
|
||||
tpm_buf_append_u32(&buf, 1);
|
||||
rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, NULL);
|
||||
if (!rc) {
|
||||
out = (struct tpm2_get_cap_out *)
|
||||
&buf.data[TPM_HEADER_SIZE];
|
||||
*value = be32_to_cpu(out->value);
|
||||
}
|
||||
tpm_buf_destroy(&buf);
|
||||
return rc;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(tpm2_get_tpm_pt);
|
||||
|
||||
#define TPM2_SHUTDOWN_IN_SIZE \
|
||||
(sizeof(struct tpm_input_header) + \
|
||||
sizeof(struct tpm2_startup_in))
|
||||
|
||||
static const struct tpm_input_header tpm2_shutdown_header = {
|
||||
.tag = cpu_to_be16(TPM2_ST_NO_SESSIONS),
|
||||
.length = cpu_to_be32(TPM2_SHUTDOWN_IN_SIZE),
|
||||
.ordinal = cpu_to_be32(TPM2_CC_SHUTDOWN)
|
||||
};
|
||||
|
||||
/**
|
||||
* tpm2_shutdown() - send shutdown command to the TPM chip
|
||||
* tpm2_shutdown() - send a TPM shutdown command
|
||||
*
|
||||
* @chip: TPM chip to use.
|
||||
* @shutdown_type: shutdown type. The value is either
|
||||
* TPM_SU_CLEAR or TPM_SU_STATE.
|
||||
* Sends a TPM shutdown command. The shutdown command is used in call
|
||||
* sites where the system is going down. If it fails, there is not much
|
||||
* that can be done except print an error message.
|
||||
*
|
||||
* @chip: a &tpm_chip instance
|
||||
* @shutdown_type: TPM_SU_CLEAR or TPM_SU_STATE.
|
||||
*/
|
||||
void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
|
||||
{
|
||||
struct tpm2_cmd cmd;
|
||||
struct tpm_buf buf;
|
||||
int rc;
|
||||
|
||||
cmd.header.in = tpm2_shutdown_header;
|
||||
cmd.params.startup_in.startup_type = cpu_to_be16(shutdown_type);
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd), 0, 0,
|
||||
rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_SHUTDOWN);
|
||||
if (rc)
|
||||
return;
|
||||
tpm_buf_append_u16(&buf, shutdown_type);
|
||||
tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0,
|
||||
"stopping the TPM");
|
||||
|
||||
/* In places where shutdown command is sent there's no much we can do
|
||||
* except print the error code on a system failure.
|
||||
*/
|
||||
if (rc < 0 && rc != -EPIPE)
|
||||
dev_warn(&chip->dev, "transmit returned %d while stopping the TPM",
|
||||
rc);
|
||||
tpm_buf_destroy(&buf);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -863,31 +811,37 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
|
|||
}
|
||||
|
||||
/**
|
||||
* tpm2_probe() - probe TPM 2.0
|
||||
* @chip: TPM chip to use
|
||||
* tpm2_probe() - probe for the TPM 2.0 protocol
|
||||
* @chip: a &tpm_chip instance
|
||||
*
|
||||
* Return: < 0 error and 0 on success.
|
||||
* Send an idempotent TPM 2.0 command and see whether there is TPM2 chip in the
|
||||
* other end based on the response tag. The flag TPM_CHIP_FLAG_TPM2 is set by
|
||||
* this function if this is the case.
|
||||
*
|
||||
* Send idempotent TPM 2.0 command and see whether TPM 2.0 chip replied based on
|
||||
* the reply tag.
|
||||
* Return:
|
||||
* 0 on success,
|
||||
* -errno otherwise
|
||||
*/
|
||||
int tpm2_probe(struct tpm_chip *chip)
|
||||
{
|
||||
struct tpm2_cmd cmd;
|
||||
struct tpm_output_header *out;
|
||||
struct tpm_buf buf;
|
||||
int rc;
|
||||
|
||||
cmd.header.in = tpm2_get_tpm_pt_header;
|
||||
cmd.params.get_tpm_pt_in.cap_id = cpu_to_be32(TPM2_CAP_TPM_PROPERTIES);
|
||||
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(0x100);
|
||||
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd), 0, 0, NULL);
|
||||
if (rc < 0)
|
||||
rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_GET_CAPABILITY);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
if (be16_to_cpu(cmd.header.out.tag) == TPM2_ST_NO_SESSIONS)
|
||||
tpm_buf_append_u32(&buf, TPM2_CAP_TPM_PROPERTIES);
|
||||
tpm_buf_append_u32(&buf, TPM_PT_TOTAL_COMMANDS);
|
||||
tpm_buf_append_u32(&buf, 1);
|
||||
rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, NULL);
|
||||
/* We ignore TPM return codes on purpose. */
|
||||
if (rc >= 0) {
|
||||
out = (struct tpm_output_header *)buf.data;
|
||||
if (be16_to_cpu(out->tag) == TPM2_ST_NO_SESSIONS)
|
||||
chip->flags |= TPM_CHIP_FLAG_TPM2;
|
||||
|
||||
}
|
||||
tpm_buf_destroy(&buf);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(tpm2_probe);
|
||||
|
|
|
|||
|
|
@ -39,7 +39,7 @@ static void tpm2_flush_sessions(struct tpm_chip *chip, struct tpm_space *space)
|
|||
for (i = 0; i < ARRAY_SIZE(space->session_tbl); i++) {
|
||||
if (space->session_tbl[i])
|
||||
tpm2_flush_context_cmd(chip, space->session_tbl[i],
|
||||
TPM_TRANSMIT_UNLOCKED);
|
||||
TPM_TRANSMIT_NESTED);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -84,7 +84,7 @@ static int tpm2_load_context(struct tpm_chip *chip, u8 *buf,
|
|||
tpm_buf_append(&tbuf, &buf[*offset], body_size);
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, tbuf.data, PAGE_SIZE, 4,
|
||||
TPM_TRANSMIT_UNLOCKED, NULL);
|
||||
TPM_TRANSMIT_NESTED, NULL);
|
||||
if (rc < 0) {
|
||||
dev_warn(&chip->dev, "%s: failed with a system error %d\n",
|
||||
__func__, rc);
|
||||
|
|
@ -133,7 +133,7 @@ static int tpm2_save_context(struct tpm_chip *chip, u32 handle, u8 *buf,
|
|||
tpm_buf_append_u32(&tbuf, handle);
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, tbuf.data, PAGE_SIZE, 0,
|
||||
TPM_TRANSMIT_UNLOCKED, NULL);
|
||||
TPM_TRANSMIT_NESTED, NULL);
|
||||
if (rc < 0) {
|
||||
dev_warn(&chip->dev, "%s: failed with a system error %d\n",
|
||||
__func__, rc);
|
||||
|
|
@ -170,7 +170,7 @@ static void tpm2_flush_space(struct tpm_chip *chip)
|
|||
for (i = 0; i < ARRAY_SIZE(space->context_tbl); i++)
|
||||
if (space->context_tbl[i] && ~space->context_tbl[i])
|
||||
tpm2_flush_context_cmd(chip, space->context_tbl[i],
|
||||
TPM_TRANSMIT_UNLOCKED);
|
||||
TPM_TRANSMIT_NESTED);
|
||||
|
||||
tpm2_flush_sessions(chip, space);
|
||||
}
|
||||
|
|
@ -377,7 +377,7 @@ static int tpm2_map_response_header(struct tpm_chip *chip, u32 cc, u8 *rsp,
|
|||
|
||||
return 0;
|
||||
out_no_slots:
|
||||
tpm2_flush_context_cmd(chip, phandle, TPM_TRANSMIT_UNLOCKED);
|
||||
tpm2_flush_context_cmd(chip, phandle, TPM_TRANSMIT_NESTED);
|
||||
dev_warn(&chip->dev, "%s: out of slots for 0x%08X\n", __func__,
|
||||
phandle);
|
||||
return -ENOMEM;
|
||||
|
|
@ -465,7 +465,7 @@ static int tpm2_save_space(struct tpm_chip *chip)
|
|||
return rc;
|
||||
|
||||
tpm2_flush_context_cmd(chip, space->context_tbl[i],
|
||||
TPM_TRANSMIT_UNLOCKED);
|
||||
TPM_TRANSMIT_NESTED);
|
||||
space->context_tbl[i] = ~0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -132,7 +132,7 @@ static bool crb_wait_for_reg_32(u32 __iomem *reg, u32 mask, u32 value,
|
|||
}
|
||||
|
||||
/**
|
||||
* crb_go_idle - request tpm crb device to go the idle state
|
||||
* __crb_go_idle - request tpm crb device to go the idle state
|
||||
*
|
||||
* @dev: crb device
|
||||
* @priv: crb private data
|
||||
|
|
@ -147,7 +147,7 @@ static bool crb_wait_for_reg_32(u32 __iomem *reg, u32 mask, u32 value,
|
|||
*
|
||||
* Return: 0 always
|
||||
*/
|
||||
static int crb_go_idle(struct device *dev, struct crb_priv *priv)
|
||||
static int __crb_go_idle(struct device *dev, struct crb_priv *priv)
|
||||
{
|
||||
if ((priv->sm == ACPI_TPM2_START_METHOD) ||
|
||||
(priv->sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD) ||
|
||||
|
|
@ -163,11 +163,20 @@ static int crb_go_idle(struct device *dev, struct crb_priv *priv)
|
|||
dev_warn(dev, "goIdle timed out\n");
|
||||
return -ETIME;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int crb_go_idle(struct tpm_chip *chip)
|
||||
{
|
||||
struct device *dev = &chip->dev;
|
||||
struct crb_priv *priv = dev_get_drvdata(dev);
|
||||
|
||||
return __crb_go_idle(dev, priv);
|
||||
}
|
||||
|
||||
/**
|
||||
* crb_cmd_ready - request tpm crb device to enter ready state
|
||||
* __crb_cmd_ready - request tpm crb device to enter ready state
|
||||
*
|
||||
* @dev: crb device
|
||||
* @priv: crb private data
|
||||
|
|
@ -181,7 +190,7 @@ static int crb_go_idle(struct device *dev, struct crb_priv *priv)
|
|||
*
|
||||
* Return: 0 on success -ETIME on timeout;
|
||||
*/
|
||||
static int crb_cmd_ready(struct device *dev, struct crb_priv *priv)
|
||||
static int __crb_cmd_ready(struct device *dev, struct crb_priv *priv)
|
||||
{
|
||||
if ((priv->sm == ACPI_TPM2_START_METHOD) ||
|
||||
(priv->sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD) ||
|
||||
|
|
@ -200,6 +209,14 @@ static int crb_cmd_ready(struct device *dev, struct crb_priv *priv)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int crb_cmd_ready(struct tpm_chip *chip)
|
||||
{
|
||||
struct device *dev = &chip->dev;
|
||||
struct crb_priv *priv = dev_get_drvdata(dev);
|
||||
|
||||
return __crb_cmd_ready(dev, priv);
|
||||
}
|
||||
|
||||
static int __crb_request_locality(struct device *dev,
|
||||
struct crb_priv *priv, int loc)
|
||||
{
|
||||
|
|
@ -401,6 +418,8 @@ static const struct tpm_class_ops tpm_crb = {
|
|||
.send = crb_send,
|
||||
.cancel = crb_cancel,
|
||||
.req_canceled = crb_req_canceled,
|
||||
.go_idle = crb_go_idle,
|
||||
.cmd_ready = crb_cmd_ready,
|
||||
.request_locality = crb_request_locality,
|
||||
.relinquish_locality = crb_relinquish_locality,
|
||||
.req_complete_mask = CRB_DRV_STS_COMPLETE,
|
||||
|
|
@ -520,7 +539,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
|
|||
* PTT HW bug w/a: wake up the device to access
|
||||
* possibly not retained registers.
|
||||
*/
|
||||
ret = crb_cmd_ready(dev, priv);
|
||||
ret = __crb_cmd_ready(dev, priv);
|
||||
if (ret)
|
||||
goto out_relinquish_locality;
|
||||
|
||||
|
|
@ -565,7 +584,7 @@ out:
|
|||
if (!ret)
|
||||
priv->cmd_size = cmd_size;
|
||||
|
||||
crb_go_idle(dev, priv);
|
||||
__crb_go_idle(dev, priv);
|
||||
|
||||
out_relinquish_locality:
|
||||
|
||||
|
|
@ -628,32 +647,7 @@ static int crb_acpi_add(struct acpi_device *device)
|
|||
chip->acpi_dev_handle = device->handle;
|
||||
chip->flags = TPM_CHIP_FLAG_TPM2;
|
||||
|
||||
rc = __crb_request_locality(dev, priv, 0);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
rc = crb_cmd_ready(dev, priv);
|
||||
if (rc)
|
||||
goto out;
|
||||
|
||||
pm_runtime_get_noresume(dev);
|
||||
pm_runtime_set_active(dev);
|
||||
pm_runtime_enable(dev);
|
||||
|
||||
rc = tpm_chip_register(chip);
|
||||
if (rc) {
|
||||
crb_go_idle(dev, priv);
|
||||
pm_runtime_put_noidle(dev);
|
||||
pm_runtime_disable(dev);
|
||||
goto out;
|
||||
}
|
||||
|
||||
pm_runtime_put_sync(dev);
|
||||
|
||||
out:
|
||||
__crb_relinquish_locality(dev, priv, 0);
|
||||
|
||||
return rc;
|
||||
return tpm_chip_register(chip);
|
||||
}
|
||||
|
||||
static int crb_acpi_remove(struct acpi_device *device)
|
||||
|
|
@ -663,52 +657,11 @@ static int crb_acpi_remove(struct acpi_device *device)
|
|||
|
||||
tpm_chip_unregister(chip);
|
||||
|
||||
pm_runtime_disable(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __maybe_unused crb_pm_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct tpm_chip *chip = dev_get_drvdata(dev);
|
||||
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
|
||||
|
||||
return crb_go_idle(dev, priv);
|
||||
}
|
||||
|
||||
static int __maybe_unused crb_pm_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct tpm_chip *chip = dev_get_drvdata(dev);
|
||||
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
|
||||
|
||||
return crb_cmd_ready(dev, priv);
|
||||
}
|
||||
|
||||
static int __maybe_unused crb_pm_suspend(struct device *dev)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = tpm_pm_suspend(dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return crb_pm_runtime_suspend(dev);
|
||||
}
|
||||
|
||||
static int __maybe_unused crb_pm_resume(struct device *dev)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = crb_pm_runtime_resume(dev);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return tpm_pm_resume(dev);
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops crb_pm = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(crb_pm_suspend, crb_pm_resume)
|
||||
SET_RUNTIME_PM_OPS(crb_pm_runtime_suspend, crb_pm_runtime_resume, NULL)
|
||||
SET_SYSTEM_SLEEP_PM_OPS(tpm_pm_suspend, tpm_pm_resume)
|
||||
};
|
||||
|
||||
static const struct acpi_device_id crb_device_ids[] = {
|
||||
|
|
|
|||
|
|
@ -117,7 +117,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
|
|||
/* 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);
|
||||
i2c_lock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
|
||||
|
||||
if (tpm_dev.chip_type == SLB9645) {
|
||||
/* use a combined read for newer chips
|
||||
|
|
@ -192,7 +192,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
|
|||
}
|
||||
|
||||
out:
|
||||
i2c_unlock_adapter(tpm_dev.client->adapter);
|
||||
i2c_unlock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
|
||||
/* take care of 'guard time' */
|
||||
usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
|
||||
|
||||
|
|
@ -224,7 +224,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
|
|||
|
||||
if (!tpm_dev.client->adapter->algo->master_xfer)
|
||||
return -EOPNOTSUPP;
|
||||
i2c_lock_adapter(tpm_dev.client->adapter);
|
||||
i2c_lock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
|
||||
|
||||
/* prepend the 'register address' to the buffer */
|
||||
tpm_dev.buf[0] = addr;
|
||||
|
|
@ -243,7 +243,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
|
|||
usleep_range(sleep_low, sleep_hi);
|
||||
}
|
||||
|
||||
i2c_unlock_adapter(tpm_dev.client->adapter);
|
||||
i2c_unlock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
|
||||
/* take care of 'guard time' */
|
||||
usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
|
||||
|
||||
|
|
|
|||
|
|
@ -875,6 +875,8 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
|
|||
chip->acpi_dev_handle = acpi_dev_handle;
|
||||
#endif
|
||||
|
||||
chip->hwrng.quality = priv->rng_quality;
|
||||
|
||||
/* Maximum timeouts */
|
||||
chip->timeout_a = msecs_to_jiffies(TIS_TIMEOUT_A_MAX);
|
||||
chip->timeout_b = msecs_to_jiffies(TIS_TIMEOUT_B_MAX);
|
||||
|
|
|
|||
|
|
@ -99,6 +99,7 @@ struct tpm_tis_data {
|
|||
wait_queue_head_t int_queue;
|
||||
wait_queue_head_t read_queue;
|
||||
const struct tpm_tis_phy_ops *phy_ops;
|
||||
unsigned short rng_quality;
|
||||
};
|
||||
|
||||
struct tpm_tis_phy_ops {
|
||||
|
|
|
|||
|
|
@ -199,6 +199,7 @@ static const struct tpm_tis_phy_ops tpm_spi_phy_ops = {
|
|||
static int tpm_tis_spi_probe(struct spi_device *dev)
|
||||
{
|
||||
struct tpm_tis_spi_phy *phy;
|
||||
int irq;
|
||||
|
||||
phy = devm_kzalloc(&dev->dev, sizeof(struct tpm_tis_spi_phy),
|
||||
GFP_KERNEL);
|
||||
|
|
@ -211,7 +212,13 @@ static int tpm_tis_spi_probe(struct spi_device *dev)
|
|||
if (!phy->iobuf)
|
||||
return -ENOMEM;
|
||||
|
||||
return tpm_tis_core_init(&dev->dev, &phy->priv, -1, &tpm_spi_phy_ops,
|
||||
/* If the SPI device has an IRQ then use that */
|
||||
if (dev->irq > 0)
|
||||
irq = dev->irq;
|
||||
else
|
||||
irq = -1;
|
||||
|
||||
return tpm_tis_core_init(&dev->dev, &phy->priv, irq, &tpm_spi_phy_ops,
|
||||
NULL);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -418,7 +418,7 @@ static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)
|
|||
proxy_dev->state |= STATE_DRIVER_COMMAND;
|
||||
|
||||
rc = tpm_transmit_cmd(chip, NULL, buf.data, tpm_buf_length(&buf), 0,
|
||||
TPM_TRANSMIT_UNLOCKED | TPM_TRANSMIT_RAW,
|
||||
TPM_TRANSMIT_NESTED,
|
||||
"attempting to set locality");
|
||||
|
||||
proxy_dev->state &= ~STATE_DRIVER_COMMAND;
|
||||
|
|
|
|||
|
|
@ -43,6 +43,8 @@ struct tpm_class_ops {
|
|||
u8 (*status) (struct tpm_chip *chip);
|
||||
bool (*update_timeouts)(struct tpm_chip *chip,
|
||||
unsigned long *timeout_cap);
|
||||
int (*go_idle)(struct tpm_chip *chip);
|
||||
int (*cmd_ready)(struct tpm_chip *chip);
|
||||
int (*request_locality)(struct tpm_chip *chip, int loc);
|
||||
int (*relinquish_locality)(struct tpm_chip *chip, int loc);
|
||||
void (*clk_enable)(struct tpm_chip *chip, bool value);
|
||||
|
|
@ -61,6 +63,7 @@ extern int tpm_seal_trusted(struct tpm_chip *chip,
|
|||
extern int tpm_unseal_trusted(struct tpm_chip *chip,
|
||||
struct trusted_key_payload *payload,
|
||||
struct trusted_key_options *options);
|
||||
extern struct tpm_chip *tpm_default_chip(void);
|
||||
#else
|
||||
static inline int tpm_is_tpm2(struct tpm_chip *chip)
|
||||
{
|
||||
|
|
@ -96,5 +99,9 @@ static inline int tpm_unseal_trusted(struct tpm_chip *chip,
|
|||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
static inline struct tpm_chip *tpm_default_chip(void)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -53,9 +53,9 @@ enum tpm_pcrs { TPM_PCR0 = 0, TPM_PCR8 = 8 };
|
|||
extern int ima_policy_flag;
|
||||
|
||||
/* set during initialization */
|
||||
extern int ima_used_chip;
|
||||
extern int ima_hash_algo;
|
||||
extern int ima_appraise;
|
||||
extern struct tpm_chip *ima_tpm_chip;
|
||||
|
||||
/* IMA event related data */
|
||||
struct ima_event_data {
|
||||
|
|
|
|||
|
|
@ -631,10 +631,10 @@ int ima_calc_buffer_hash(const void *buf, loff_t len,
|
|||
|
||||
static void __init ima_pcrread(int idx, u8 *pcr)
|
||||
{
|
||||
if (!ima_used_chip)
|
||||
if (!ima_tpm_chip)
|
||||
return;
|
||||
|
||||
if (tpm_pcr_read(NULL, idx, pcr) != 0)
|
||||
if (tpm_pcr_read(ima_tpm_chip, idx, pcr) != 0)
|
||||
pr_err("Error Communicating to TPM chip\n");
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -26,7 +26,7 @@
|
|||
|
||||
/* name for boot aggregate entry */
|
||||
static const char *boot_aggregate_name = "boot_aggregate";
|
||||
int ima_used_chip;
|
||||
struct tpm_chip *ima_tpm_chip;
|
||||
|
||||
/* Add the boot aggregate to the IMA measurement list and extend
|
||||
* the PCR register.
|
||||
|
|
@ -64,7 +64,7 @@ static int __init ima_add_boot_aggregate(void)
|
|||
iint->ima_hash->algo = HASH_ALGO_SHA1;
|
||||
iint->ima_hash->length = SHA1_DIGEST_SIZE;
|
||||
|
||||
if (ima_used_chip) {
|
||||
if (ima_tpm_chip) {
|
||||
result = ima_calc_boot_aggregate(&hash.hdr);
|
||||
if (result < 0) {
|
||||
audit_cause = "hashing_error";
|
||||
|
|
@ -106,17 +106,11 @@ void __init ima_load_x509(void)
|
|||
|
||||
int __init ima_init(void)
|
||||
{
|
||||
u8 pcr_i[TPM_DIGEST_SIZE];
|
||||
int rc;
|
||||
|
||||
ima_used_chip = 0;
|
||||
rc = tpm_pcr_read(NULL, 0, pcr_i);
|
||||
if (rc == 0)
|
||||
ima_used_chip = 1;
|
||||
|
||||
if (!ima_used_chip)
|
||||
pr_info("No TPM chip found, activating TPM-bypass! (rc=%d)\n",
|
||||
rc);
|
||||
ima_tpm_chip = tpm_default_chip();
|
||||
if (!ima_tpm_chip)
|
||||
pr_info("No TPM chip found, activating TPM-bypass!\n");
|
||||
|
||||
rc = integrity_init_keyring(INTEGRITY_KEYRING_IMA);
|
||||
if (rc)
|
||||
|
|
|
|||
|
|
@ -142,10 +142,10 @@ static int ima_pcr_extend(const u8 *hash, int pcr)
|
|||
{
|
||||
int result = 0;
|
||||
|
||||
if (!ima_used_chip)
|
||||
if (!ima_tpm_chip)
|
||||
return result;
|
||||
|
||||
result = tpm_pcr_extend(NULL, pcr, hash);
|
||||
result = tpm_pcr_extend(ima_tpm_chip, pcr, hash);
|
||||
if (result != 0)
|
||||
pr_err("Error Communicating to TPM chip, result: %d\n", result);
|
||||
return result;
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче