diff options
Diffstat (limited to 'lib/tpm-v1.c')
| -rw-r--r-- | lib/tpm-v1.c | 68 |
1 files changed, 65 insertions, 3 deletions
diff --git a/lib/tpm-v1.c b/lib/tpm-v1.c index 7aecb24f921..9d45c3d3bf6 100644 --- a/lib/tpm-v1.c +++ b/lib/tpm-v1.c @@ -4,6 +4,8 @@ * Coypright (c) 2013 Guntermann & Drunck GmbH */ +#define LOG_CATEGORY UCLASS_TPM + #include <common.h> #include <dm.h> #include <asm/unaligned.h> @@ -45,6 +47,11 @@ u32 tpm_startup(enum tpm_startup_type mode) return tpm_sendrecv_command(buf, NULL, NULL); } +u32 tpm_resume(void) +{ + return tpm_startup(TPM_ST_STATE); +} + u32 tpm_self_test_full(void) { const u8 command[10] = { @@ -61,6 +68,34 @@ u32 tpm_continue_self_test(void) return tpm_sendrecv_command(command, NULL, NULL); } +u32 tpm_clear_and_reenable(void) +{ + u32 ret; + + log_info("TPM: Clear and re-enable\n"); + ret = tpm_force_clear(); + if (ret != TPM_SUCCESS) { + log_err("Can't initiate a force clear\n"); + return ret; + } + +#if IS_ENABLED(CONFIG_TPM_V1) + ret = tpm_physical_enable(); + if (ret != TPM_SUCCESS) { + log_err("TPM: Can't set enabled state\n"); + return ret; + } + + ret = tpm_physical_set_deactivated(0); + if (ret != TPM_SUCCESS) { + log_err("TPM: Can't set deactivated state\n"); + return ret; + } +#endif + + return TPM_SUCCESS; +} + u32 tpm_nv_define_space(u32 index, u32 perm, u32 size) { const u8 command[101] = { @@ -104,6 +139,11 @@ u32 tpm_nv_define_space(u32 index, u32 perm, u32 size) return tpm_sendrecv_command(buf, NULL, NULL); } +u32 tpm_nv_set_locked(void) +{ + return tpm_nv_define_space(TPM_NV_INDEX_LOCK, 0, 0); +} + u32 tpm_nv_read_value(u32 index, void *data, u32 count) { const u8 command[22] = { @@ -168,6 +208,13 @@ u32 tpm_nv_write_value(u32 index, const void *data, u32 length) return 0; } +uint32_t tpm_set_global_lock(void) +{ + u32 x; + + return tpm_nv_write_value(TPM_NV_INDEX_0, (uint8_t *)&x, 0); +} + u32 tpm_extend(u32 index, const void *in_digest, void *out_digest) { const u8 command[34] = { @@ -243,6 +290,15 @@ u32 tpm_tsc_physical_presence(u16 presence) return tpm_sendrecv_command(buf, NULL, NULL); } +u32 tpm_finalise_physical_presence(void) +{ + const u8 command[12] = { + 0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0, + }; + + return tpm_sendrecv_command(command, NULL, NULL); +} + u32 tpm_read_pubek(void *data, size_t count) { const u8 command[30] = { @@ -377,13 +433,19 @@ u32 tpm_get_permanent_flags(struct tpm_permanent_flags *pflags) if (err) return err; if (unpack_byte_string(response, response_length, "d", - data_size_offset, &data_size)) + data_size_offset, &data_size)) { + log_err("Cannot unpack data size\n"); return TPM_LIB_ERROR; - if (data_size < sizeof(*pflags)) + } + if (data_size < sizeof(*pflags)) { + log_err("Data size too small\n"); return TPM_LIB_ERROR; + } if (unpack_byte_string(response, response_length, "s", - data_offset, pflags, sizeof(*pflags))) + data_offset, pflags, sizeof(*pflags))) { + log_err("Cannot unpack pflags\n"); return TPM_LIB_ERROR; + } return 0; } |