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grub2/0004-tss2-Add-TPM-2.0-NV-index-commands.patch

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From 75c480885ab00fb9bc046fe214df60007116aef2 Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Mon, 7 Apr 2025 16:29:18 +0800
Subject: [PATCH 4/7] tss2: Add TPM 2.0 NV index commands
The following TPM 2.0 commands are introduced to tss2 to access the
TPM non-volatile memory associated with the NV index handles:
- TPM2_NV_DefineSpace,
- TPM2_NV_UndefineSpace,
- TPM2_NV_ReadPublic,
- TPM2_NV_Read,
- TPM2_NV_Write.
The related marshal/unmarshal functions are also introduced.
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/lib/tss2/tpm2_cmd.c | 201 ++++++++++++++++++++++++++++++++
grub-core/lib/tss2/tpm2_cmd.h | 32 +++++
grub-core/lib/tss2/tss2_mu.c | 39 +++++++
grub-core/lib/tss2/tss2_mu.h | 12 ++
grub-core/lib/tss2/tss2_types.h | 6 +
5 files changed, 290 insertions(+)
diff --git a/grub-core/lib/tss2/tpm2_cmd.c b/grub-core/lib/tss2/tpm2_cmd.c
index 211d807d5..6d25db1ab 100644
--- a/grub-core/lib/tss2/tpm2_cmd.c
+++ b/grub-core/lib/tss2/tpm2_cmd.c
@@ -1045,3 +1045,204 @@ grub_tpm2_testparms (const TPMT_PUBLIC_PARMS_t *parms,
return TPM_RC_SUCCESS;
}
+
+TPM_RC_t
+grub_tpm2_nv_definespace (const TPMI_RH_PROVISION_t authHandle,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const TPM2B_AUTH_t *auth,
+ const TPM2B_NV_PUBLIC_t *publicInfo)
+{
+ TPM_RC_t rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG_t tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC_t responseCode;
+
+ if (publicInfo == NULL)
+ return TPM_RC_VALUE;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, authHandle);
+ if (authCommand != NULL)
+ grub_Tss2_MU_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (auth != NULL)
+ grub_Tss2_MU_TPM2B_Marshal (&in, auth->size, auth->buffer);
+ else
+ grub_tpm2_buffer_pack_u16 (&in, 0);
+ grub_Tss2_MU_TPM2B_NV_PUBLIC_Marshal (&in, publicInfo);
+ if (in.error != 0)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = tpm2_submit_command (tag, TPM_CC_NV_DefineSpace, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (out.error != 0)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC_t
+grub_tpm2_nv_undefinespace (const TPMI_RH_PROVISION_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand)
+{
+ TPM_RC_t rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG_t tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC_t responseCode;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, authHandle);
+ grub_tpm2_buffer_pack_u32 (&in, nvIndex);
+ if (authCommand != NULL)
+ grub_Tss2_MU_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (in.error != 0)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = tpm2_submit_command (tag, TPM_CC_NV_UndefineSpace, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (out.error != 0)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC_t
+grub_tpm2_nv_readpublic (const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ TPM2B_NV_PUBLIC_t *nvPublic,
+ TPM2B_NAME_t *nvName)
+{
+ TPM_RC_t rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG_t tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC_t responseCode;
+ grub_uint32_t param_size;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, nvIndex);
+ if (authCommand != NULL)
+ grub_Tss2_MU_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ if (in.error != 0)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = tpm2_submit_command (tag, TPM_CC_NV_ReadPublic, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, &param_size);
+ grub_Tss2_MU_TPM2B_NV_PUBLIC_Unmarshal (&out, nvPublic);
+ grub_Tss2_MU_TPM2B_NAME_Unmarshal (&out, nvName);
+ if (out.error != 0)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC_t
+grub_tpm2_nv_read (const TPMI_RH_NV_AUTH_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const grub_uint16_t size,
+ const grub_uint16_t offset,
+ TPM2B_MAX_NV_BUFFER_t *data)
+{
+ TPM_RC_t rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG_t tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC_t responseCode;
+ grub_uint32_t param_size;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, authHandle);
+ grub_tpm2_buffer_pack_u32 (&in, nvIndex);
+ if (authCommand != NULL)
+ grub_Tss2_MU_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_tpm2_buffer_pack_u16 (&in, size);
+ grub_tpm2_buffer_pack_u16 (&in, offset);
+ if (in.error != 0)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = tpm2_submit_command (tag, TPM_CC_NV_Read, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (tag == TPM_ST_SESSIONS)
+ grub_tpm2_buffer_unpack_u32 (&out, &param_size);
+ grub_Tss2_MU_TPM2B_NAX_NV_BUFFER_Unmarshal (&out, data);
+ if (out.error != 0)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
+
+TPM_RC_t
+grub_tpm2_nv_write (const TPMI_RH_NV_AUTH_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const TPM2B_MAX_NV_BUFFER_t *data,
+ const grub_uint16_t offset)
+{
+ TPM_RC_t rc;
+ struct grub_tpm2_buffer in;
+ struct grub_tpm2_buffer out;
+ TPMI_ST_COMMAND_TAG_t tag = authCommand ? TPM_ST_SESSIONS : TPM_ST_NO_SESSIONS;
+ TPM_RC_t responseCode;
+
+ /* Marshal */
+ grub_tpm2_buffer_init (&in);
+ grub_tpm2_buffer_pack_u32 (&in, authHandle);
+ grub_tpm2_buffer_pack_u32 (&in, nvIndex);
+ if (authCommand != NULL)
+ grub_Tss2_MU_TPMS_AUTH_COMMAND_Marshal (&in, authCommand);
+ grub_Tss2_MU_TPM2B_Marshal (&in, data->size, data->buffer);
+ grub_tpm2_buffer_pack_u16 (&in, offset);
+ if (in.error != 0)
+ return TPM_RC_FAILURE;
+
+ /* Submit */
+ grub_tpm2_buffer_init (&out);
+ rc = tpm2_submit_command (tag, TPM_CC_NV_Write, &responseCode, &in, &out);
+ if (rc != TPM_RC_SUCCESS)
+ return rc;
+ if (responseCode != TPM_RC_SUCCESS)
+ return responseCode;
+
+ /* Unmarshal */
+ if (out.error != 0)
+ return TPM_RC_FAILURE;
+
+ return TPM_RC_SUCCESS;
+}
diff --git a/grub-core/lib/tss2/tpm2_cmd.h b/grub-core/lib/tss2/tpm2_cmd.h
index d313cba00..90b42efec 100644
--- a/grub-core/lib/tss2/tpm2_cmd.h
+++ b/grub-core/lib/tss2/tpm2_cmd.h
@@ -154,4 +154,36 @@ extern TPM_RC_t
grub_tpm2_testparms (const TPMT_PUBLIC_PARMS_t *parms,
const TPMS_AUTH_COMMAND_t *authCommand);
+extern TPM_RC_t
+grub_tpm2_nv_definespace (const TPMI_RH_PROVISION_t authHandle,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const TPM2B_AUTH_t *auth,
+ const TPM2B_NV_PUBLIC_t *publicInfo);
+
+extern TPM_RC_t
+grub_tpm2_nv_undefinespace (const TPMI_RH_PROVISION_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand);
+
+extern TPM_RC_t
+grub_tpm2_nv_readpublic (const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ TPM2B_NV_PUBLIC_t *nvPublic,
+ TPM2B_NAME_t *nvName);
+
+extern TPM_RC_t
+grub_tpm2_nv_read (const TPMI_RH_NV_AUTH_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const grub_uint16_t size,
+ const grub_uint16_t offset,
+ TPM2B_MAX_NV_BUFFER_t *data);
+
+extern TPM_RC_t
+grub_tpm2_nv_write (const TPMI_RH_NV_AUTH_t authHandle,
+ const TPMI_RH_NV_INDEX_t nvIndex,
+ const TPMS_AUTH_COMMAND_t *authCommand,
+ const TPM2B_MAX_NV_BUFFER_t *data,
+ const grub_uint16_t offset);
+
#endif /* ! GRUB_TPM2_COMMANDS_HEADER */
diff --git a/grub-core/lib/tss2/tss2_mu.c b/grub-core/lib/tss2/tss2_mu.c
index 86134cc0a..816e5b37f 100644
--- a/grub-core/lib/tss2/tss2_mu.c
+++ b/grub-core/lib/tss2/tss2_mu.c
@@ -17,6 +17,7 @@
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <grub/mm.h>
#include <grub/misc.h>
#include <tss2_mu.h>
@@ -572,6 +573,37 @@ grub_Tss2_MU_TPMT_TK_VERIFIED_Marshal (grub_tpm2_buffer_t buffer,
grub_Tss2_MU_TPM2B_Marshal (buffer, p->digest.size, p->digest.buffer);
}
+void
+grub_Tss2_MU_TPMS_NV_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_NV_PUBLIC_t *p)
+{
+ grub_tpm2_buffer_pack_u32 (buffer, p->nvIndex);
+ grub_tpm2_buffer_pack_u16 (buffer, p->nameAlg);
+ grub_tpm2_buffer_pack_u32 (buffer, p->attributes);
+ grub_Tss2_MU_TPM2B_Marshal (buffer, p->authPolicy.size, p->authPolicy.buffer);
+ grub_tpm2_buffer_pack_u16 (buffer, p->dataSize);
+}
+
+void
+grub_Tss2_MU_TPM2B_NV_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_NV_PUBLIC_t *p)
+{
+ grub_uint32_t start;
+ grub_uint16_t size;
+
+ if (p != NULL)
+ {
+ grub_tpm2_buffer_pack_u16 (buffer, p->size);
+
+ start = buffer->size;
+ grub_Tss2_MU_TPMS_NV_PUBLIC_Marshal (buffer, &p->nvPublic);
+ size = grub_cpu_to_be16 (buffer->size - start);
+ grub_memcpy (&buffer->data[start - sizeof (grub_uint16_t)], &size, sizeof (size));
+ }
+ else
+ grub_tpm2_buffer_pack_u16 (buffer, 0);
+}
+
static void
__Tss2_MU_TPM2B_BUFFER_Unmarshal (grub_tpm2_buffer_t buffer,
TPM2B_t *p, grub_uint16_t bound)
@@ -982,6 +1014,13 @@ grub_Tss2_MU_TPM2B_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
grub_Tss2_MU_TPMS_NV_PUBLIC_Unmarshal (buffer, &p->nvPublic);
}
+void
+grub_Tss2_MU_TPM2B_NAX_NV_BUFFER_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_MAX_NV_BUFFER_t *p)
+{
+ TPM2B_BUFFER_UNMARSHAL (buffer, TPM2B_MAX_NV_BUFFER_t, p);
+}
+
void
grub_Tss2_MU_TPM2B_NAME_Unmarshal (grub_tpm2_buffer_t buffer,
TPM2B_NAME_t *n)
diff --git a/grub-core/lib/tss2/tss2_mu.h b/grub-core/lib/tss2/tss2_mu.h
index 8f82126e1..6440de57c 100644
--- a/grub-core/lib/tss2/tss2_mu.h
+++ b/grub-core/lib/tss2/tss2_mu.h
@@ -193,6 +193,14 @@ extern void
grub_Tss2_MU_TPMT_TK_VERIFIED_Marshal (grub_tpm2_buffer_t buffer,
const TPMT_TK_VERIFIED_t *p);
+extern void
+grub_Tss2_MU_TPMS_NV_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPMS_NV_PUBLIC_t *p);
+
+extern void
+grub_Tss2_MU_TPM2B_NV_PUBLIC_Marshal (grub_tpm2_buffer_t buffer,
+ const TPM2B_NV_PUBLIC_t *p);
+
extern void
grub_Tss2_MU_TPMS_AUTH_RESPONSE_Unmarshal (grub_tpm2_buffer_t buffer,
TPMS_AUTH_RESPONSE_t *p);
@@ -336,6 +344,10 @@ extern void
grub_Tss2_MU_TPM2B_NV_PUBLIC_Unmarshal (grub_tpm2_buffer_t buffer,
TPM2B_NV_PUBLIC_t *p);
+extern void
+grub_Tss2_MU_TPM2B_NAX_NV_BUFFER_Unmarshal (grub_tpm2_buffer_t buffer,
+ TPM2B_MAX_NV_BUFFER_t *p);
+
extern void
grub_Tss2_MU_TPM2B_NAME_Unmarshal (grub_tpm2_buffer_t buffer,
TPM2B_NAME_t *n);
diff --git a/grub-core/lib/tss2/tss2_types.h b/grub-core/lib/tss2/tss2_types.h
index 5b1a7947d..bddde7191 100644
--- a/grub-core/lib/tss2/tss2_types.h
+++ b/grub-core/lib/tss2/tss2_types.h
@@ -270,6 +270,7 @@ typedef TPM_HANDLE_t TPMI_RH_NV_INDEX_t;
/* TPM_HT_t Constants */
typedef grub_uint8_t TPM_HT_t;
+#define TPM_HT_NV_INDEX ((TPM_HT_t) 0x01)
#define TPM_HT_PERMANENT ((TPM_HT_t) 0x40)
#define TPM_HT_PERSISTENT ((TPM_HT_t) 0x81)
@@ -300,6 +301,7 @@ typedef TPM_HANDLE_t TPM_HC_t;
#define TPM_HR_HANDLE_MASK ((TPM_HC_t) 0x00FFFFFF)
#define TPM_HR_RANGE_MASK ((TPM_HC_t) 0xFF000000)
#define TPM_HR_SHIFT ((TPM_HC_t) 24)
+#define TPM_HR_NV_INDEX ((TPM_HC_t) (TPM_HT_NV_INDEX << TPM_HR_SHIFT))
#define TPM_HR_PERSISTENT ((TPM_HC_t) (TPM_HT_PERSISTENT << TPM_HR_SHIFT))
#define TPM_HR_PERMANENT ((TPM_HC_t) (TPM_HT_PERMANENT << TPM_HR_SHIFT))
#define TPM_PERSISTENT_FIRST ((TPM_HC_t) (TPM_HR_PERSISTENT + 0))
@@ -308,6 +310,7 @@ typedef TPM_HANDLE_t TPM_HC_t;
#define TPM_PERMANENT_LAST ((TPM_HC_t) TPM_RH_LAST)
/* TPM Handle Type Checks */
+#define TPM_HT_IS_NVINDEX(HANDLE) (((HANDLE) >> TPM_HR_SHIFT) == TPM_HT_NV_INDEX)
#define TPM_HT_IS_PERMANENT(HANDLE) (((HANDLE) >> TPM_HR_SHIFT) == TPM_HT_PERMANENT)
#define TPM_HT_IS_PERSISTENT(HANDLE) (((HANDLE) >> TPM_HR_SHIFT) == TPM_HT_PERSISTENT)
@@ -334,8 +337,11 @@ typedef grub_uint32_t TPM_CC_t;
#define TPM_CC_ReadPublic ((TPM_CC_t) 0x00000173)
#define TPM_CC_StartAuthSession ((TPM_CC_t) 0x00000176)
#define TPM_CC_PolicyPCR ((TPM_CC_t) 0x0000017f)
+#define TPM_CC_NV_DefineSpace ((TPM_CC_t) 0x0000012a)
#define TPM_CC_NV_Read ((TPM_CC_t) 0x0000014e)
#define TPM_CC_NV_ReadPublic ((TPM_CC_t) 0x00000169)
+#define TPM_CC_NV_Write ((TPM_CC_t) 0x00000137)
+#define TPM_CC_NV_UndefineSpace ((TPM_CC_t) 0x00000122)
#define TPM_CC_GetCapability ((TPM_CC_t) 0x0000017a)
#define TPM_CC_PCR_Read ((TPM_CC_t) 0x0000017e)
#define TPM_CC_Load ((TPM_CC_t) 0x00000157)
--
2.43.0
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