[1910] 2008-11-12 Robert Millan <[email protected]>

Robert Millan <[email protected]>
Newsgroups gmane.comp.boot-loaders.grub.cvs
Message-ID <[email protected]> 
Revision: 1910
          http://svn.sv.gnu.org/viewvc/?view=rev&root=grub&revision=1910
Author:   robertmh
Date:     2008-11-11 23:27:18 +0000 (Tue, 11 Nov 2008)

Log Message:
-----------
2008-11-12  Robert Millan  <[email protected]>

        Use newly-added Multiboot support in coreboot.

        * conf/i386-coreboot.rmk (kernel_elf_SOURCES): Replace
        `kern/i386/coreboot/mmap.c' with `kern/i386/multiboot_mmap.c'.

        * kern/i386/coreboot/startup.S: Enable Multiboot header, fix its
        alignment, set `MULTIBOOT_MEMORY_INFO' flag.
        (codestart): Store the MBI in `startup_multiboot_info' when we're
        being loaded using Multiboot.

        * kern/i386/coreboot/init.c (grub_machine_init): Move
        grub_at_keyboard_init() call to beginning of function (useful for
        debugging).  Call grub_machine_mmap_init() before attempting to use
        grub_machine_mmap_iterate().
        (grub_lower_mem, grub_upper_mem): Move from here ...
        * kern/i386/multiboot_mmap.c (grub_lower_mem, grub_upper_mem): ... to
        here (new file).

        * include/grub/i386/coreboot/memory.h (grub_machine_mmap_init): New
        function prototype.

Modified Paths:
--------------
    trunk/grub2/ChangeLog
    trunk/grub2/DISTLIST
    trunk/grub2/conf/i386-coreboot.mk
    trunk/grub2/conf/i386-coreboot.rmk
    trunk/grub2/include/grub/i386/coreboot/memory.h
    trunk/grub2/kern/i386/coreboot/init.c
    trunk/grub2/kern/i386/coreboot/startup.S

Added Paths:
-----------
    trunk/grub2/kern/i386/multiboot_mmap.c

Modified: trunk/grub2/ChangeLog
===================================================================
--- trunk/grub2/ChangeLog	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/ChangeLog	2008-11-11 23:27:18 UTC (rev 1910)
@@ -1,5 +1,28 @@
 2008-11-12  Robert Millan  <[email protected]>
 
+	Use newly-added Multiboot support in coreboot.
+
+	* conf/i386-coreboot.rmk (kernel_elf_SOURCES): Replace
+	`kern/i386/coreboot/mmap.c' with `kern/i386/multiboot_mmap.c'.
+
+	* kern/i386/coreboot/startup.S: Enable Multiboot header, fix its
+	alignment, set `MULTIBOOT_MEMORY_INFO' flag.
+	(codestart): Store the MBI in `startup_multiboot_info' when we're
+	being loaded using Multiboot.
+
+	* kern/i386/coreboot/init.c (grub_machine_init): Move
+	grub_at_keyboard_init() call to beginning of function (useful for
+	debugging).  Call grub_machine_mmap_init() before attempting to use
+	grub_machine_mmap_iterate().
+	(grub_lower_mem, grub_upper_mem): Move from here ...
+	* kern/i386/multiboot_mmap.c (grub_lower_mem, grub_upper_mem): ... to
+	here (new file).
+
+	* include/grub/i386/coreboot/memory.h (grub_machine_mmap_init): New
+	function prototype.
+
+2008-11-12  Robert Millan  <[email protected]>
+
 	Fix a regression introduced by the at_keyboard.mod split.  Because
 	some terminals are default on some platforms and non-default on
 	others, the first terminal being registered determines which is

Modified: trunk/grub2/DISTLIST
===================================================================
--- trunk/grub2/DISTLIST	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/DISTLIST	2008-11-11 23:27:18 UTC (rev 1910)
@@ -313,6 +313,7 @@
 kern/i386/dl.c
 kern/i386/halt.c
 kern/i386/loader.S
+kern/i386/multiboot_mmap.c
 kern/i386/pit.c
 kern/i386/realmode.S
 kern/i386/reboot.c

Modified: trunk/grub2/conf/i386-coreboot.mk
===================================================================
--- trunk/grub2/conf/i386-coreboot.mk	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/conf/i386-coreboot.mk	2008-11-11 23:27:18 UTC (rev 1910)
@@ -14,7 +14,7 @@
 # For kernel.elf.
 kernel_elf_SOURCES = kern/i386/coreboot/startup.S \
 	kern/i386/coreboot/init.c \
-	kern/i386/coreboot/mmap.c \
+	kern/i386/multiboot_mmap.c \
 	kern/main.c kern/device.c \
 	kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
 	kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
@@ -27,11 +27,11 @@
 	term/i386/pc/console.c \
 	term/i386/pc/at_keyboard.c term/i386/pc/vga_text.c \
 	symlist.c
-CLEANFILES += kernel.elf kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
-MOSTLYCLEANFILES += kernel_elf-kern_i386_coreboot_startup.d kernel_elf-kern_i386_coreboot_init.d kernel_elf-kern_i386_coreboot_mmap.d kernel_elf-kern_main.d kernel_elf-kern_device.d kernel_elf-kern_disk.d kernel_elf-kern_dl.d kernel_elf-kern_file.d kernel_elf-kern_fs.d kernel_elf-kern_err.d kernel_elf-kern_misc.d kernel_elf-kern_mm.d kernel_elf-kern_loader.d kernel_elf-kern_rescue.d kernel_elf-kern_term.d kernel_elf-kern_time.d kernel_elf-kern_i386_dl.d kernel_elf-kern_parser.d kernel_elf-kern_partition.d kernel_elf-kern_i386_tsc.d kernel_elf-kern_i386_pit.d kernel_elf-kern_generic_rtc_get_time_ms.d kernel_elf-kern_generic_millisleep.d kernel_elf-kern_env.d kernel_elf-term_i386_pc_console.d kernel_elf-term_i386_pc_at_keyboard.d kernel_elf-term_i386_pc_vga_text.d kernel_elf-symlist.d
+CLEANFILES += kernel.elf kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o
 
+MOSTLYCLEANFILES += kernel_elf-kern_i386_coreboot_startup.d kernel_elf-kern_i386_coreboot_init.d kernel_elf-kern_i386_multiboot_mmap.d kernel_elf-kern_main.d kernel_elf-kern_device.d kernel_elf-kern_disk.d kernel_elf-kern_dl.d kernel_elf-kern_file.d kernel_elf-kern_fs.d kernel_elf-kern_err.d kernel_elf-kern_misc.d kernel_elf-kern_mm.d kernel_elf-kern_loader.d kernel_elf-kern_rescue.d kernel_elf-kern_term.d kernel_elf-kern_time.d kernel_elf-kern_i386_dl.d kernel_elf-kern_parser.d kernel_elf-kern_partition.d kernel_elf-kern_i386_tsc.d kernel_elf-kern_i386_pit.d kernel_elf-kern_generic_rtc_get_time_ms.d kernel_elf-kern_generic_millisleep.d kernel_elf-kern_env.d kernel_elf-term_i386_pc_console.d kernel_elf-term_i386_pc_at_keyboard.d kernel_elf-term_i386_pc_vga_text.d kernel_elf-symlist.d
 
-kernel.elf: $(kernel_elf_DEPENDENCIES) kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_
 elf-symlist.o
-	$(TARGET_CC) -o $@ kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_coreboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o $(TAR
 GET_LDFLAGS) $(kernel_elf_LDFLAGS)
+kernel.elf: $(kernel_elf_DEPENDENCIES) kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel
 _elf-symlist.o
+	$(TARGET_CC) -o $@ kernel_elf-kern_i386_coreboot_startup.o kernel_elf-kern_i386_coreboot_init.o kernel_elf-kern_i386_multiboot_mmap.o kernel_elf-kern_main.o kernel_elf-kern_device.o kernel_elf-kern_disk.o kernel_elf-kern_dl.o kernel_elf-kern_file.o kernel_elf-kern_fs.o kernel_elf-kern_err.o kernel_elf-kern_misc.o kernel_elf-kern_mm.o kernel_elf-kern_loader.o kernel_elf-kern_rescue.o kernel_elf-kern_term.o kernel_elf-kern_time.o kernel_elf-kern_i386_dl.o kernel_elf-kern_parser.o kernel_elf-kern_partition.o kernel_elf-kern_i386_tsc.o kernel_elf-kern_i386_pit.o kernel_elf-kern_generic_rtc_get_time_ms.o kernel_elf-kern_generic_millisleep.o kernel_elf-kern_env.o kernel_elf-term_i386_pc_console.o kernel_elf-term_i386_pc_at_keyboard.o kernel_elf-term_i386_pc_vga_text.o kernel_elf-symlist.o $(TA
 RGET_LDFLAGS) $(kernel_elf_LDFLAGS)
 
 kernel_elf-kern_i386_coreboot_startup.o: kern/i386/coreboot/startup.S $(kern/i386/coreboot/startup.S_DEPENDENCIES)
 	$(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
@@ -41,9 +41,9 @@
 	$(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
 -include kernel_elf-kern_i386_coreboot_init.d
 
-kernel_elf-kern_i386_coreboot_mmap.o: kern/i386/coreboot/mmap.c $(kern/i386/coreboot/mmap.c_DEPENDENCIES)
-	$(TARGET_CC) -Ikern/i386/coreboot -I$(srcdir)/kern/i386/coreboot $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
--include kernel_elf-kern_i386_coreboot_mmap.d
+kernel_elf-kern_i386_multiboot_mmap.o: kern/i386/multiboot_mmap.c $(kern/i386/multiboot_mmap.c_DEPENDENCIES)
+	$(TARGET_CC) -Ikern/i386 -I$(srcdir)/kern/i386 $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<
+-include kernel_elf-kern_i386_multiboot_mmap.d
 
 kernel_elf-kern_main.o: kern/main.c $(kern/main.c_DEPENDENCIES)
 	$(TARGET_CC) -Ikern -I$(srcdir)/kern $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) $(kernel_elf_CFLAGS) -MD -c -o $@ $<

Modified: trunk/grub2/conf/i386-coreboot.rmk
===================================================================
--- trunk/grub2/conf/i386-coreboot.rmk	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/conf/i386-coreboot.rmk	2008-11-11 23:27:18 UTC (rev 1910)
@@ -13,7 +13,7 @@
 # For kernel.elf.
 kernel_elf_SOURCES = kern/i386/coreboot/startup.S \
 	kern/i386/coreboot/init.c \
-	kern/i386/coreboot/mmap.c \
+	kern/i386/multiboot_mmap.c \
 	kern/main.c kern/device.c \
 	kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
 	kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \

Modified: trunk/grub2/include/grub/i386/coreboot/memory.h
===================================================================
--- trunk/grub2/include/grub/i386/coreboot/memory.h	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/include/grub/i386/coreboot/memory.h	2008-11-11 23:27:18 UTC (rev 1910)
@@ -59,6 +59,8 @@
 };
 typedef struct grub_linuxbios_mem_region *mem_region_t;
 
+void grub_machine_mmap_init (void);
+
 void EXPORT_FUNC(grub_machine_mmap_iterate)
      (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t));
 

Modified: trunk/grub2/kern/i386/coreboot/init.c
===================================================================
--- trunk/grub2/kern/i386/coreboot/init.c	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/kern/i386/coreboot/init.c	2008-11-11 23:27:18 UTC (rev 1910)
@@ -42,7 +42,6 @@
 
 grub_addr_t grub_os_area_addr;
 grub_size_t grub_os_area_size;
-grub_size_t grub_lower_mem, grub_upper_mem;
 
 /* FIXME: we need interrupts to do this right */
 static grub_uint32_t grub_time_tics = 0;
@@ -79,10 +78,8 @@
 {
   /* Initialize the console as early as possible.  */
   grub_console_init ();
+  grub_at_keyboard_init ();
 
-  grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
-  grub_upper_mem = 0;
-
   auto int NESTED_FUNC_ATTR heap_init (grub_uint64_t, grub_uint64_t, grub_uint32_t);
   int NESTED_FUNC_ATTR heap_init (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
   {
@@ -132,13 +129,13 @@
     return 0;
   }
 
+  grub_machine_mmap_init ();
   grub_machine_mmap_iterate (heap_init);
 
   /* This variable indicates size, not offset.  */
   grub_upper_mem -= GRUB_MEMORY_MACHINE_UPPER_START;
 
   grub_tsc_init ();
-  grub_at_keyboard_init ();
 }
 
 void

Modified: trunk/grub2/kern/i386/coreboot/startup.S
===================================================================
--- trunk/grub2/kern/i386/coreboot/startup.S	2008-11-11 23:16:54 UTC (rev 1909)
+++ trunk/grub2/kern/i386/coreboot/startup.S	2008-11-11 23:27:18 UTC (rev 1910)
@@ -55,20 +55,24 @@
 
 	. = EXT_C(start) + GRUB_KERNEL_CPU_DATA_END
 
-#if 0
 /*
  *  Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself).
  */
+	.p2align	2	/* force 4-byte alignment */
 multiboot_header:
 	/* magic */
 	.long	0x1BADB002
 	/* flags */
-	.long	0
+	.long	MULTIBOOT_MEMORY_INFO
 	/* checksum */
-	.long	-0x1BADB002
-#endif
+	.long	-0x1BADB002 - MULTIBOOT_MEMORY_INFO
 
 codestart:
+	cmpl	$MULTIBOOT_MAGIC2, %eax
+	jne 0f
+	movl	%ebx, EXT_C(startup_multiboot_info)
+0:
+
 	/* initialize the stack */
 	movl $GRUB_MEMORY_MACHINE_PROT_STACK, %esp
 

Added: trunk/grub2/kern/i386/multiboot_mmap.c
===================================================================
--- trunk/grub2/kern/i386/multiboot_mmap.c	                        (rev 0)
+++ trunk/grub2/kern/i386/multiboot_mmap.c	2008-11-11 23:27:18 UTC (rev 1910)
@@ -0,0 +1,84 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2003,2004,2005,2006,2007,2008  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/machine/init.h>
+#include <grub/machine/memory.h>
+#include <grub/types.h>
+#include <grub/multiboot.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+
+grub_size_t grub_lower_mem, grub_upper_mem;
+
+/* A pointer to the MBI in its initial location.  */
+struct grub_multiboot_info *startup_multiboot_info;
+
+/* The MBI has to be copied to our BSS so that it won't be
+   overwritten.  This is its final location.  */
+static struct grub_multiboot_info kern_multiboot_info;
+
+/* Unfortunately we can't use heap at this point.  But 32 looks like a sane
+   limit (used by memtest86).  */
+static grub_uint8_t mmap_entries[sizeof (struct grub_multiboot_mmap_entry) * 32];
+
+void
+grub_machine_mmap_init ()
+{
+  if (! startup_multiboot_info)
+    grub_fatal ("Must be loaded using Multiboot specification (is this an old version of coreboot?)");
+
+  /* Move MBI to a safe place.  */
+  grub_memmove (&kern_multiboot_info, startup_multiboot_info, sizeof (struct grub_multiboot_info));
+
+  if ((kern_multiboot_info.flags & MULTIBOOT_INFO_MEM_MAP) == 0)
+    grub_fatal ("Missing Multiboot memory information");
+
+  /* Move the memory map to a safe place.  */
+  if (kern_multiboot_info.mmap_length > sizeof (mmap_entries))
+    {
+      grub_printf ("WARNING: Memory map size exceeds limit; it will be truncated\n");
+      kern_multiboot_info.mmap_length = sizeof (mmap_entries);
+    }
+  grub_memmove (mmap_entries, (void *) kern_multiboot_info.mmap_addr, kern_multiboot_info.mmap_length);
+  kern_multiboot_info.mmap_addr = (grub_uint32_t) mmap_entries;
+
+  if ((kern_multiboot_info.flags & MULTIBOOT_INFO_MEMORY) == 0)
+    {
+      grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
+      grub_upper_mem = 0;
+    }
+  else
+    {
+      grub_lower_mem = kern_multiboot_info.mem_lower * 1024;
+      grub_upper_mem = kern_multiboot_info.mem_upper * 1024;
+    }
+}
+
+void
+grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t))
+{
+  struct grub_multiboot_mmap_entry *entry = (void *) kern_multiboot_info.mmap_addr;
+
+  while ((unsigned long) entry < kern_multiboot_info.mmap_addr + kern_multiboot_info.mmap_length)
+    {
+      if (hook (entry->addr, entry->len, entry->type))
+	break;
+
+      entry = (void *) ((grub_addr_t) entry + entry->size + sizeof (entry->size));
+    }
+}
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