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efi/tpm: Add debug information for device protocol and eventlog

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Add a number of debug logs to the tpm module. The condition tag
for opening debugging is "tpm". On TPM machines, this will bring
great convenience to diagnosis and debugging.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Tianjia Zhang 2020-10-29 21:49:29 +08:00 committed by Daniel Kiper
parent a195dbb677
commit 3ccbaf36d4
1 changed files with 17 additions and 4 deletions
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21
grub-core/commands/efi/tpm.c
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@ -56,9 +56,13 @@ grub_tpm1_present (grub_efi_tpm_protocol_t *tpm)
if (status != GRUB_EFI_SUCCESS || caps.TPMDeactivatedFlag
|| !caps.TPMPresentFlag)
return tpm1_present = 0;
tpm1_present = 0;
else
tpm1_present = 1;
return tpm1_present = 1;
grub_dprintf ("tpm", "tpm1%s present\n", tpm1_present ? "" : " NOT");
return (grub_efi_boolean_t) tpm1_present;
}
static grub_efi_boolean_t
@ -75,9 +79,13 @@ grub_tpm2_present (grub_efi_tpm2_protocol_t *tpm)
status = efi_call_2 (tpm->get_capability, tpm, &caps);
if (status != GRUB_EFI_SUCCESS || !caps.TPMPresentFlag)
return tpm2_present = 0;
tpm2_present = 0;
else
tpm2_present = 1;
return tpm2_present = 1;
grub_dprintf ("tpm", "tpm2%s present\n", tpm2_present ? "" : " NOT");
return (grub_efi_boolean_t) tpm2_present;
}
static grub_efi_boolean_t
@ -102,6 +110,7 @@ grub_tpm_handle_find (grub_efi_handle_t *tpm_handle,
*tpm_handle = handles[0];
grub_tpm_version = 1;
*protocol_version = 1;
grub_dprintf ("tpm", "TPM handle Found, version: 1\n");
return 1;
}
@ -113,6 +122,7 @@ grub_tpm_handle_find (grub_efi_handle_t *tpm_handle,
*tpm_handle = handles[0];
grub_tpm_version = 2;
*protocol_version = 2;
grub_dprintf ("tpm", "TPM handle Found, version: 2\n");
return 1;
}
@ -231,6 +241,9 @@ grub_tpm_measure (unsigned char *buf, grub_size_t size, grub_uint8_t pcr,
if (!grub_tpm_handle_find (&tpm_handle, &protocol_version))
return 0;
grub_dprintf ("tpm", "log_event, pcr = %d, size = 0x%" PRIxGRUB_SIZE ", %s\n",
pcr, size, description);
if (protocol_version == 1)
return grub_tpm1_log_event (tpm_handle, buf, size, pcr, description);
else