grub2/0001-tss2-Adjust-bit-fields-for-big-endian-targets.patch

From 99ee68a0149b1132f160c80924ab2987ebafcbdd Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.ibm.com>
Date: Tue, 26 Nov 2024 15:39:40 -0500
Subject: [PATCH 1/7] tss2: Adjust bit fields for big endian targets

The TPM bit fields need to be in reverse order for big endian targets,
such as ieee1275 PowerPC platforms that run GRUB in big endian mode.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Gary Lin <glin@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/lib/tss2/tss2_structs.h | 38 +++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/grub-core/lib/tss2/tss2_structs.h b/grub-core/lib/tss2/tss2_structs.h
index ca33db3ec..e5390ab56 100644
--- a/grub-core/lib/tss2/tss2_structs.h
+++ b/grub-core/lib/tss2/tss2_structs.h
@@ -147,6 +147,15 @@ typedef TPM2B_DIGEST_t TPM2B_NONCE_t;
 /* TPMA_SESSION Structure */
 struct TPMA_SESSION
 {
+#ifdef GRUB_TARGET_WORDS_BIGENDIAN
+  grub_uint8_t audit:1;
+  grub_uint8_t encrypt:1;
+  grub_uint8_t decrypt:1;
+  grub_uint8_t reserved:2;
+  grub_uint8_t auditReset:1;
+  grub_uint8_t auditExclusive:1;
+  grub_uint8_t continueSession:1;
+#else
   grub_uint8_t continueSession:1;
   grub_uint8_t auditExclusive:1;
   grub_uint8_t auditReset:1;
@@ -154,6 +163,7 @@ struct TPMA_SESSION
   grub_uint8_t decrypt:1;
   grub_uint8_t encrypt:1;
   grub_uint8_t audit:1;
+#endif
 };
 typedef struct TPMA_SESSION TPMA_SESSION_t;
 
@@ -206,6 +216,24 @@ typedef struct TPM2B_SENSITIVE_CREATE TPM2B_SENSITIVE_CREATE_t;
 /* TPMA_OBJECT Structure */
 struct TPMA_OBJECT
 {
+#ifdef GRUB_TARGET_WORDS_BIGENDIAN
+  grub_uint32_t reserved5:13;
+  grub_uint32_t sign:1;
+  grub_uint32_t decrypt:1;
+  grub_uint32_t restricted:1;
+  grub_uint32_t reserved4:4;
+  grub_uint32_t encryptedDuplication:1;
+  grub_uint32_t noDA:1;
+  grub_uint32_t reserved3:2;
+  grub_uint32_t adminWithPolicy:1;
+  grub_uint32_t userWithAuth:1;
+  grub_uint32_t sensitiveDataOrigin:1;
+  grub_uint32_t fixedParent:1;
+  grub_uint32_t reserved2:1;
+  grub_uint32_t stClear:1;
+  grub_uint32_t fixedTPM:1;
+  grub_uint32_t reserved1:1;
+#else
   grub_uint32_t reserved1:1;
   grub_uint32_t fixedTPM:1;
   grub_uint32_t stClear:1;
@@ -222,6 +250,7 @@ struct TPMA_OBJECT
   grub_uint32_t decrypt:1;
   grub_uint32_t sign:1;
   grub_uint32_t reserved5:13;
+#endif
 };
 typedef struct TPMA_OBJECT TPMA_OBJECT_t;
 
@@ -516,12 +545,21 @@ typedef struct TPM2B_DATA TPM2B_DATA_t;
 /* TPMA_LOCALITY Structure */
 struct TPMA_LOCALITY
 {
+#ifdef GRUB_TARGET_WORDS_BIGENDIAN
+  grub_uint8_t Extended:3;
+  grub_uint8_t TPM_LOC_FOUR:1;
+  grub_uint8_t TPM_LOC_THREE:1;
+  grub_uint8_t TPM_LOC_TWO:1;
+  grub_uint8_t TPM_LOC_ONE:1;
+  grub_uint8_t TPM_LOC_ZERO:1;
+#else
   grub_uint8_t TPM_LOC_ZERO:1;
   grub_uint8_t TPM_LOC_ONE:1;
   grub_uint8_t TPM_LOC_TWO:1;
   grub_uint8_t TPM_LOC_THREE:1;
   grub_uint8_t TPM_LOC_FOUR:1;
   grub_uint8_t Extended:3;
+#endif
 };
 typedef struct TPMA_LOCALITY TPMA_LOCALITY_t;
 
-- 
2.43.0