| Message ID | 20170623134157.30399-3-roberto.sassu@huawei.com |
|---|---|
| State | New |
| Headers | show |
On Fri, Jun 23, 2017 at 03:41:57PM +0200, Roberto Sassu wrote: > tpm2_do_selftest() performs a PCR read during the TPM initialization phase. > This patch replaces the PCR read code with a call to tpm2_pcr_read(). > > Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkine@linux.intel.com> /Jarkko > --- > drivers/char/tpm/tpm2-cmd.c | 31 +------------------------------ > 1 file changed, 1 insertion(+), 30 deletions(-) > > diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c > index fdce77d..2d6ee0c 100644 > --- a/drivers/char/tpm/tpm2-cmd.c > +++ b/drivers/char/tpm/tpm2-cmd.c > @@ -35,13 +35,6 @@ struct tpm2_self_test_in { > u8 full_test; > } __packed; > > -struct tpm2_pcr_read_in { > - __be32 pcr_selects_cnt; > - __be16 hash_alg; > - u8 pcr_select_size; > - u8 pcr_select[TPM2_PCR_SELECT_MIN]; > -} __packed; > - > struct tpm2_get_tpm_pt_in { > __be32 cap_id; > __be32 property_id; > @@ -68,7 +61,6 @@ struct tpm2_get_random_out { > union tpm2_cmd_params { > struct tpm2_startup_in startup_in; > struct tpm2_self_test_in selftest_in; > - struct tpm2_pcr_read_in pcrread_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; > @@ -215,16 +207,6 @@ static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = { > TPM_UNDEFINED /* 18f */ > }; > > -#define TPM2_PCR_READ_IN_SIZE \ > - (sizeof(struct tpm_input_header) + \ > - sizeof(struct tpm2_pcr_read_in)) > - > -static const struct tpm_input_header tpm2_pcrread_header = { > - .tag = cpu_to_be16(TPM2_ST_NO_SESSIONS), > - .length = cpu_to_be32(TPM2_PCR_READ_IN_SIZE), > - .ordinal = cpu_to_be32(TPM2_CC_PCR_READ) > -}; > - > struct tpm2_pcr_read_out { > __be32 update_cnt; > __be32 pcr_selects_cnt; > @@ -928,7 +910,6 @@ static int tpm2_do_selftest(struct tpm_chip *chip) > unsigned int loops; > unsigned int delay_msec = 100; > unsigned long duration; > - struct tpm2_cmd cmd; > int i; > > duration = tpm2_calc_ordinal_duration(chip, TPM2_CC_SELF_TEST); > @@ -941,20 +922,10 @@ static int tpm2_do_selftest(struct tpm_chip *chip) > > for (i = 0; i < loops; i++) { > /* Attempt to read a PCR value */ > - cmd.header.in = tpm2_pcrread_header; > - cmd.params.pcrread_in.pcr_selects_cnt = cpu_to_be32(1); > - cmd.params.pcrread_in.hash_alg = cpu_to_be16(TPM2_ALG_SHA1); > - cmd.params.pcrread_in.pcr_select_size = TPM2_PCR_SELECT_MIN; > - cmd.params.pcrread_in.pcr_select[0] = 0x01; > - cmd.params.pcrread_in.pcr_select[1] = 0x00; > - cmd.params.pcrread_in.pcr_select[2] = 0x00; > - > - rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd), 0, 0, > - NULL); > + rc = tpm2_pcr_read(chip, 0, NULL); > if (rc < 0) > break; > > - rc = be32_to_cpu(cmd.header.out.return_code); > if (rc != TPM2_RC_TESTING) > break; > > -- > 2.9.3 > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
On Thu, Jun 29, 2017 at 01:19:35AM +0300, Jarkko Sakkinen wrote: > On Fri, Jun 23, 2017 at 03:41:57PM +0200, Roberto Sassu wrote: > > tpm2_do_selftest() performs a PCR read during the TPM initialization phase. > > This patch replaces the PCR read code with a call to tpm2_pcr_read(). > > > > Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkine@linux.intel.com> Tested-by: Jarkko Sakkinen <jarkko.sakkine@linux.intel.com> /Jarkko ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index fdce77d..2d6ee0c 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -35,13 +35,6 @@ struct tpm2_self_test_in { u8 full_test; } __packed; -struct tpm2_pcr_read_in { - __be32 pcr_selects_cnt; - __be16 hash_alg; - u8 pcr_select_size; - u8 pcr_select[TPM2_PCR_SELECT_MIN]; -} __packed; - struct tpm2_get_tpm_pt_in { __be32 cap_id; __be32 property_id; @@ -68,7 +61,6 @@ struct tpm2_get_random_out { union tpm2_cmd_params { struct tpm2_startup_in startup_in; struct tpm2_self_test_in selftest_in; - struct tpm2_pcr_read_in pcrread_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; @@ -215,16 +207,6 @@ static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = { TPM_UNDEFINED /* 18f */ }; -#define TPM2_PCR_READ_IN_SIZE \ - (sizeof(struct tpm_input_header) + \ - sizeof(struct tpm2_pcr_read_in)) - -static const struct tpm_input_header tpm2_pcrread_header = { - .tag = cpu_to_be16(TPM2_ST_NO_SESSIONS), - .length = cpu_to_be32(TPM2_PCR_READ_IN_SIZE), - .ordinal = cpu_to_be32(TPM2_CC_PCR_READ) -}; - struct tpm2_pcr_read_out { __be32 update_cnt; __be32 pcr_selects_cnt; @@ -928,7 +910,6 @@ static int tpm2_do_selftest(struct tpm_chip *chip) unsigned int loops; unsigned int delay_msec = 100; unsigned long duration; - struct tpm2_cmd cmd; int i; duration = tpm2_calc_ordinal_duration(chip, TPM2_CC_SELF_TEST); @@ -941,20 +922,10 @@ static int tpm2_do_selftest(struct tpm_chip *chip) for (i = 0; i < loops; i++) { /* Attempt to read a PCR value */ - cmd.header.in = tpm2_pcrread_header; - cmd.params.pcrread_in.pcr_selects_cnt = cpu_to_be32(1); - cmd.params.pcrread_in.hash_alg = cpu_to_be16(TPM2_ALG_SHA1); - cmd.params.pcrread_in.pcr_select_size = TPM2_PCR_SELECT_MIN; - cmd.params.pcrread_in.pcr_select[0] = 0x01; - cmd.params.pcrread_in.pcr_select[1] = 0x00; - cmd.params.pcrread_in.pcr_select[2] = 0x00; - - rc = tpm_transmit_cmd(chip, NULL, &cmd, sizeof(cmd), 0, 0, - NULL); + rc = tpm2_pcr_read(chip, 0, NULL); if (rc < 0) break; - rc = be32_to_cpu(cmd.header.out.return_code); if (rc != TPM2_RC_TESTING) break;
tpm2_do_selftest() performs a PCR read during the TPM initialization phase. This patch replaces the PCR read code with a call to tpm2_pcr_read(). Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> --- drivers/char/tpm/tpm2-cmd.c | 31 +------------------------------ 1 file changed, 1 insertion(+), 30 deletions(-)