[PATCH v7 1/7] tpm: Export the TPM-version functions
Ilias Apalodimas
ilias.apalodimas at linaro.org
Thu Jul 21 08:58:38 CEST 2022
On Wed, 20 Jul 2022 at 15:30, Sughosh Ganu <sughosh.ganu at linaro.org> wrote:
>
> From: Simon Glass <sjg at chromium.org>
>
> These functions should really be available outside the TPM code, so that
> other callers can find out which version the TPM is. Rename them to have
> a tpm_ prefix() and add them to the header file.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> Changes since V6: None
>
> include/tpm_api.h | 10 ++++++
> lib/tpm_api.c | 92 +++++++++++++++++++++--------------------------
> 2 files changed, 51 insertions(+), 51 deletions(-)
>
> diff --git a/include/tpm_api.h b/include/tpm_api.h
> index ef45b43a8f..11aa14eb79 100644
> --- a/include/tpm_api.h
> +++ b/include/tpm_api.h
> @@ -319,4 +319,14 @@ u32 tpm_write_lock(struct udevice *dev, u32 index);
> */
> u32 tpm_resume(struct udevice *dev);
>
> +static inline bool tpm_is_v1(struct udevice *dev)
> +{
> + return IS_ENABLED(CONFIG_TPM_V1) && tpm_get_version(dev) == TPM_V1;
> +}
> +
> +static inline bool tpm_is_v2(struct udevice *dev)
> +{
> + return IS_ENABLED(CONFIG_TPM_V2) && tpm_get_version(dev) == TPM_V2;
> +}
> +
> #endif /* __TPM_API_H */
> diff --git a/lib/tpm_api.c b/lib/tpm_api.c
> index 4c662640a9..4ac4612c81 100644
> --- a/lib/tpm_api.c
> +++ b/lib/tpm_api.c
> @@ -11,21 +11,11 @@
> #include <tpm-v2.h>
> #include <tpm_api.h>
>
> -static bool is_tpm1(struct udevice *dev)
> -{
> - return IS_ENABLED(CONFIG_TPM_V1) && tpm_get_version(dev) == TPM_V1;
> -}
> -
> -static bool is_tpm2(struct udevice *dev)
> -{
> - return IS_ENABLED(CONFIG_TPM_V2) && tpm_get_version(dev) == TPM_V2;
> -}
> -
> u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode)
> {
> - if (is_tpm1(dev)) {
> + if (tpm_is_v1(dev)) {
> return tpm1_startup(dev, mode);
> - } else if (is_tpm2(dev)) {
> + } else if (tpm_is_v2(dev)) {
> enum tpm2_startup_types type;
>
> switch (mode) {
> @@ -47,9 +37,9 @@ u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode)
>
> u32 tpm_resume(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_startup(dev, TPM_ST_STATE);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_startup(dev, TPM2_SU_STATE);
> else
> return -ENOSYS;
> @@ -57,9 +47,9 @@ u32 tpm_resume(struct udevice *dev)
>
> u32 tpm_self_test_full(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_self_test_full(dev);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_self_test(dev, TPMI_YES);
> else
> return -ENOSYS;
> @@ -67,9 +57,9 @@ u32 tpm_self_test_full(struct udevice *dev)
>
> u32 tpm_continue_self_test(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_continue_self_test(dev);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_self_test(dev, TPMI_NO);
> else
> return -ENOSYS;
> @@ -86,7 +76,7 @@ u32 tpm_clear_and_reenable(struct udevice *dev)
> return ret;
> }
>
> - if (is_tpm1(dev)) {
> + if (tpm_is_v1(dev)) {
> ret = tpm1_physical_enable(dev);
> if (ret != TPM_SUCCESS) {
> log_err("TPM: Can't set enabled state\n");
> @@ -105,9 +95,9 @@ u32 tpm_clear_and_reenable(struct udevice *dev)
>
> u32 tpm_nv_enable_locking(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_nv_define_space(dev, TPM_NV_INDEX_LOCK, 0, 0);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return -ENOSYS;
> else
> return -ENOSYS;
> @@ -115,9 +105,9 @@ u32 tpm_nv_enable_locking(struct udevice *dev)
>
> u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_nv_read_value(dev, index, data, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_nv_read_value(dev, index, data, count);
> else
> return -ENOSYS;
> @@ -126,9 +116,9 @@ u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
> u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
> u32 count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_nv_write_value(dev, index, data, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_nv_write_value(dev, index, data, count);
> else
> return -ENOSYS;
> @@ -141,9 +131,9 @@ u32 tpm_set_global_lock(struct udevice *dev)
>
> u32 tpm_write_lock(struct udevice *dev, u32 index)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return -ENOSYS;
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_write_lock(dev, index);
> else
> return -ENOSYS;
> @@ -152,9 +142,9 @@ u32 tpm_write_lock(struct udevice *dev, u32 index)
> u32 tpm_pcr_extend(struct udevice *dev, u32 index, const void *in_digest,
> void *out_digest)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_extend(dev, index, in_digest, out_digest);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_pcr_extend(dev, index, TPM2_ALG_SHA256, in_digest,
> TPM2_DIGEST_LEN);
> else
> @@ -163,9 +153,9 @@ u32 tpm_pcr_extend(struct udevice *dev, u32 index, const void *in_digest,
>
> u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_pcr_read(dev, index, data, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return -ENOSYS;
> else
> return -ENOSYS;
> @@ -173,14 +163,14 @@ u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count)
>
> u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_tsc_physical_presence(dev, presence);
>
> /*
> * Nothing to do on TPM2 for this; use platform hierarchy availability
> * instead.
> */
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return 0;
> else
> return -ENOSYS;
> @@ -188,11 +178,11 @@ u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence)
>
> u32 tpm_finalise_physical_presence(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_finalise_physical_presence(dev);
>
> /* Nothing needs to be done with tpm2 */
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return 0;
> else
> return -ENOSYS;
> @@ -200,9 +190,9 @@ u32 tpm_finalise_physical_presence(struct udevice *dev)
>
> u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_read_pubek(dev, data, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return -ENOSYS; /* not implemented yet */
> else
> return -ENOSYS;
> @@ -210,9 +200,9 @@ u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count)
>
> u32 tpm_force_clear(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_force_clear(dev);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_clear(dev, TPM2_RH_PLATFORM, NULL, 0);
> else
> return -ENOSYS;
> @@ -220,11 +210,11 @@ u32 tpm_force_clear(struct udevice *dev)
>
> u32 tpm_physical_enable(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_physical_enable(dev);
>
> /* Nothing needs to be done with tpm2 */
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return 0;
> else
> return -ENOSYS;
> @@ -232,11 +222,11 @@ u32 tpm_physical_enable(struct udevice *dev)
>
> u32 tpm_physical_disable(struct udevice *dev)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_physical_disable(dev);
>
> /* Nothing needs to be done with tpm2 */
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return 0;
> else
> return -ENOSYS;
> @@ -244,10 +234,10 @@ u32 tpm_physical_disable(struct udevice *dev)
>
> u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_physical_set_deactivated(dev, state);
> /* Nothing needs to be done with tpm2 */
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return 0;
> else
> return -ENOSYS;
> @@ -256,9 +246,9 @@ u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state)
> u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
> void *cap, size_t count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_get_capability(dev, cap_area, sub_cap, cap, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return tpm2_get_capability(dev, cap_area, sub_cap, cap, count);
> else
> return -ENOSYS;
> @@ -266,9 +256,9 @@ u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
>
> u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_get_permissions(dev, index, perm);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return -ENOSYS; /* not implemented yet */
> else
> return -ENOSYS;
> @@ -276,9 +266,9 @@ u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm)
>
> u32 tpm_get_random(struct udevice *dev, void *data, u32 count)
> {
> - if (is_tpm1(dev))
> + if (tpm_is_v1(dev))
> return tpm1_get_random(dev, data, count);
> - else if (is_tpm2(dev))
> + else if (tpm_is_v2(dev))
> return -ENOSYS; /* not implemented yet */
> else
> return -ENOSYS;
> --
> 2.34.1
>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
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