diff options
Diffstat (limited to 'drivers/char/tpm/tpm_bios.c')
-rw-r--r-- | drivers/char/tpm/tpm_bios.c | 89 |
1 files changed, 29 insertions, 60 deletions
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c index e45f0d3..a611972 100644 --- a/drivers/char/tpm/tpm_bios.c +++ b/drivers/char/tpm/tpm_bios.c @@ -105,6 +105,12 @@ static const char* tcpa_event_type_strings[] = { "Non-Host Info" }; +struct tcpa_pc_event { + u32 event_id; + u32 event_size; + u8 event_data[0]; +}; + enum tcpa_pc_event_ids { SMBIOS = 1, BIS_CERT, @@ -114,14 +120,15 @@ enum tcpa_pc_event_ids { NVRAM, OPTION_ROM_EXEC, OPTION_ROM_CONFIG, - OPTION_ROM_MICROCODE, + OPTION_ROM_MICROCODE = 10, S_CRTM_VERSION, S_CRTM_CONTENTS, POST_CONTENTS, + HOST_TABLE_OF_DEVICES, }; static const char* tcpa_pc_event_id_strings[] = { - "" + "", "SMBIOS", "BIS Certificate", "POST BIOS ", @@ -130,11 +137,12 @@ static const char* tcpa_pc_event_id_strings[] = { "NVRAM", "Option ROM", "Option ROM config", - "Option ROM microcode", + "", + "Option ROM microcode ", "S-CRTM Version", - "S-CRTM Contents", - "S-CRTM POST Contents", - "POST Contents", + "S-CRTM Contents ", + "POST Contents ", + "Table of Devices", }; /* returns pointer to start of pos. entry of tcg log */ @@ -206,7 +214,7 @@ static int get_event_name(char *dest, struct tcpa_event *event, const char *name = ""; char data[40] = ""; int i, n_len = 0, d_len = 0; - u32 event_id; + struct tcpa_pc_event *pc_event; switch(event->event_type) { case PREBOOT: @@ -235,31 +243,32 @@ static int get_event_name(char *dest, struct tcpa_event *event, } break; case EVENT_TAG: - event_id = be32_to_cpu(*((u32 *)event_entry)); + pc_event = (struct tcpa_pc_event *)event_entry; /* ToDo Row data -> Base64 */ - switch (event_id) { + switch (pc_event->event_id) { case SMBIOS: case BIS_CERT: case CMOS: case NVRAM: case OPTION_ROM_EXEC: case OPTION_ROM_CONFIG: - case OPTION_ROM_MICROCODE: case S_CRTM_VERSION: - case S_CRTM_CONTENTS: - case POST_CONTENTS: - name = tcpa_pc_event_id_strings[event_id]; + name = tcpa_pc_event_id_strings[pc_event->event_id]; n_len = strlen(name); break; + /* hash data */ case POST_BIOS_ROM: case ESCD: - name = tcpa_pc_event_id_strings[event_id]; + case OPTION_ROM_MICROCODE: + case S_CRTM_CONTENTS: + case POST_CONTENTS: + name = tcpa_pc_event_id_strings[pc_event->event_id]; n_len = strlen(name); for (i = 0; i < 20; i++) - d_len += sprintf(data, "%02x", - event_entry[8 + i]); + d_len += sprintf(&data[2*i], "%02x", + pc_event->event_data[i]); break; default: break; @@ -275,53 +284,13 @@ static int get_event_name(char *dest, struct tcpa_event *event, static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v) { + struct tcpa_event *event = v; + char *data = v; + int i; - char *eventname; - char data[4]; - u32 help; - int i, len; - struct tcpa_event *event = (struct tcpa_event *) v; - unsigned char *event_entry = - (unsigned char *) (v + sizeof(struct tcpa_event)); - - eventname = kmalloc(MAX_TEXT_EVENT, GFP_KERNEL); - if (!eventname) { - printk(KERN_ERR "%s: ERROR - No Memory for event name\n ", - __func__); - return -ENOMEM; - } - - /* 1st: PCR used is in little-endian format (4 bytes) */ - help = le32_to_cpu(event->pcr_index); - memcpy(data, &help, 4); - for (i = 0; i < 4; i++) - seq_putc(m, data[i]); - - /* 2nd: SHA1 (20 bytes) */ - for (i = 0; i < 20; i++) - seq_putc(m, event->pcr_value[i]); - - /* 3rd: event type identifier (4 bytes) */ - help = le32_to_cpu(event->event_type); - memcpy(data, &help, 4); - for (i = 0; i < 4; i++) + for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++) seq_putc(m, data[i]); - len = 0; - - len += get_event_name(eventname, event, event_entry); - - /* 4th: filename <= 255 + \'0' delimiter */ - if (len > TCG_EVENT_NAME_LEN_MAX) - len = TCG_EVENT_NAME_LEN_MAX; - - for (i = 0; i < len; i++) - seq_putc(m, eventname[i]); - - /* 5th: delimiter */ - seq_putc(m, '\0'); - - kfree(eventname); return 0; } |