From bcc75fb3f781c6a16ac03006e13050e8cc37ca3a Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Thu, 31 May 2012 13:23:30 +0200
Subject: [PATCH] 	* include/grub/i386/linux.h (linux_kernel_params): Add
 v206. 	* grub-core/loader/i386/linux.c (grub_linux_boot): Use v206. 
 (grub_cmd_linux) [__x86_64__]: Validate grub_efi_system_table.

---
 ChangeLog                     |  6 ++++++
 grub-core/loader/i386/linux.c | 30 +++++++++++++++++++++++++-----
 include/grub/i386/linux.h     | 13 ++++++++++++-
 3 files changed, 43 insertions(+), 6 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d3ecbbfd5..def75cca9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-05-31  Peter Jones <pjones@redhat.com>
+
+	* include/grub/i386/linux.h (linux_kernel_params): Add v206.
+	* grub-core/loader/i386/linux.c (grub_linux_boot): Use v206.
+	(grub_cmd_linux) [__x86_64__]: Validate grub_efi_system_table.
+
 2012-05-31  Vladimir Serbinenko  <phcoder@gmail.com>
 
 	* grub-core/loader/i386/linux.c (grub_linux_boot): Fix overflow and
diff --git a/grub-core/loader/i386/linux.c b/grub-core/loader/i386/linux.c
index ed924b77d..9cedac265 100644
--- a/grub-core/loader/i386/linux.c
+++ b/grub-core/loader/i386/linux.c
@@ -619,15 +619,23 @@ grub_linux_boot (void)
     efi_mmap_target = real_mode_target 
       + ((grub_uint8_t *) efi_mmap_buf - (grub_uint8_t *) real_mode_mem);
     /* Pass EFI parameters.  */
-    if (grub_le_to_cpu16 (params->version) >= 0x0206)
+    if (grub_le_to_cpu16 (params->version) >= 0x0208)
+      {
+	params->v0208.efi_mem_desc_size = efi_desc_size;
+	params->v0208.efi_mem_desc_version = efi_desc_version;
+	params->v0208.efi_mmap = efi_mmap_target;
+	params->v0208.efi_mmap_size = efi_mmap_size;
+
+#ifdef __x86_64__
+	params->v0206.efi_mmap_hi = (efi_mmap_target >> 32);
+#endif
+      }
+    else if (grub_le_to_cpu16 (params->version) >= 0x0206)
       {
 	params->v0206.efi_mem_desc_size = efi_desc_size;
 	params->v0206.efi_mem_desc_version = efi_desc_version;
 	params->v0206.efi_mmap = efi_mmap_target;
 	params->v0206.efi_mmap_size = efi_mmap_size;
-#ifdef __x86_64__
-	params->v0206.efi_mmap_hi = (efi_mmap_target >> 32);
-#endif
       }
     else if (grub_le_to_cpu16 (params->version) >= 0x0204)
       {
@@ -829,7 +837,14 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
   params->font_size = 16; /* XXX */
 
 #ifdef GRUB_MACHINE_EFI
-  if (grub_le_to_cpu16 (params->version) >= 0x0206)
+#ifdef __x86_64__
+  if (grub_le_to_cpu16 (params->version < 0x0208) &&
+      ((grub_addr_t) grub_efi_system_table >> 32) != 0)
+    return grub_error(GRUB_ERR_BAD_OS,
+		      "kernel does not support 64-bit addressing");
+#endif
+
+  if (grub_le_to_cpu16 (params->version) >= 0x0208)
     {
       params->v0206.efi_signature = GRUB_LINUX_EFI_SIGNATURE;
       params->v0206.efi_system_table = (grub_uint32_t) (unsigned long) grub_efi_system_table;
@@ -837,6 +852,11 @@ grub_cmd_linux (grub_command_t cmd __attribute__ ((unused)),
       params->v0206.efi_system_table_hi = (grub_uint32_t) ((grub_uint64_t) grub_efi_system_table >> 32);
 #endif
     }
+  else if (grub_le_to_cpu16 (params->version) >= 0x0206)
+    {
+      params->v0206.efi_signature = GRUB_LINUX_EFI_SIGNATURE;
+      params->v0206.efi_system_table = (grub_uint32_t) (unsigned long) grub_efi_system_table;
+    }
   else if (grub_le_to_cpu16 (params->version) >= 0x0204)
     {
       params->v0204.efi_signature = GRUB_LINUX_EFI_SIGNATURE_0204;
diff --git a/include/grub/i386/linux.h b/include/grub/i386/linux.h
index 38e8e9758..9d064c852 100644
--- a/include/grub/i386/linux.h
+++ b/include/grub/i386/linux.h
@@ -234,6 +234,17 @@ struct linux_kernel_params
           grub_uint32_t efi_mmap_size;		/* 1cc */
           grub_uint32_t efi_mmap;		/* 1d0 */
         } v0204;
+      struct
+        {
+          grub_uint32_t padding7_1;		/* 1b8 */
+          grub_uint32_t padding7_2;		/* 1bc */
+          grub_uint32_t efi_signature;		/* 1c0 */
+          grub_uint32_t efi_system_table;	/* 1c4 */
+          grub_uint32_t efi_mem_desc_size;	/* 1c8 */
+          grub_uint32_t efi_mem_desc_version;	/* 1cc */
+          grub_uint32_t efi_mmap;		/* 1d0 */
+          grub_uint32_t efi_mmap_size;		/* 1d4 */
+	} v0206;
       struct
         {
           grub_uint32_t padding7_1;		/* 1b8 */
@@ -246,7 +257,7 @@ struct linux_kernel_params
           grub_uint32_t efi_mmap_size;		/* 1d4 */
           grub_uint32_t efi_system_table_hi;	/* 1d8 */
           grub_uint32_t efi_mmap_hi;		/* 1dc */
-        } v0206;
+        } v0208;
     };
 
   grub_uint32_t alt_mem;		/* 1e0 */