1 files changed, 100 insertions, 0 deletions
diff --git a/grub-core/kern/coreboot/mmap.c b/grub-core/kern/coreboot/mmap.c
new file mode 100644
index 0000000..caf8f7c
--- /dev/null
+++ b/grub-core/kern/coreboot/mmap.c
@@ -0,0 +1,100 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2007,2008,2013  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/memory.h>
+#include <grub/coreboot/lbio.h>
+#include <grub/types.h>
+#include <grub/err.h>
+#include <grub/misc.h>
+
+/* Context for grub_machine_mmap_iterate.  */
+struct grub_machine_mmap_iterate_ctx
+{
+  grub_memory_hook_t hook;
+  void *hook_data;
+};
+
+#define GRUB_MACHINE_MEMORY_BADRAM 	5
+
+/* Helper for grub_machine_mmap_iterate.  */
+static int
+iterate_linuxbios_table (grub_linuxbios_table_item_t table_item, void *data)
+{
+  struct grub_machine_mmap_iterate_ctx *ctx = data;
+  mem_region_t mem_region;
+
+  if (table_item->tag != GRUB_LINUXBIOS_MEMBER_MEMORY)
+    return 0;
+
+  mem_region =
+    (mem_region_t) ((long) table_item +
+			       sizeof (struct grub_linuxbios_table_item));
+  for (; (long) mem_region < (long) table_item + (long) table_item->size;
+       mem_region++)
+    {
+      grub_uint64_t start = mem_region->addr;
+      grub_uint64_t end = mem_region->addr + mem_region->size;
+#ifdef __i386__
+      /* Mark region 0xa0000 - 0x100000 as reserved.  */
+      if (start < 0x100000 && end >= 0xa0000
+	  && mem_region->type == GRUB_MACHINE_MEMORY_AVAILABLE)
+	{
+	  if (start < 0xa0000
+	      && ctx->hook (start, 0xa0000 - start,
+			    /* Multiboot mmaps match with the coreboot mmap
+			       definition.  Therefore, we can just pass type
+			       through.  */
+			    mem_region->type,
+			    ctx->hook_data))
+	    return 1;
+	  if (start < 0xa0000)
+	    start = 0xa0000;
+	  if (start >= end)
+	    continue;
+
+	  if (ctx->hook (start, (end > 0x100000 ? 0x100000 : end) - start,
+			 GRUB_MEMORY_RESERVED,
+			 ctx->hook_data))
+	    return 1;
+	  start = 0x100000;
+
+	  if (end <= start)
+	    continue;
+	}
+#endif
+      if (ctx->hook (start, end - start,
+		     /* Multiboot mmaps match with the coreboot mmap
+		        definition.  Therefore, we can just pass type
+		        through.  */
+		     mem_region->type,
+		     ctx->hook_data))
+	return 1;
+    }
+
+  return 0;
+}
+
+grub_err_t
+grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
+{
+  struct grub_machine_mmap_iterate_ctx ctx = { hook, hook_data };
+
+  grub_linuxbios_table_iterate (iterate_linuxbios_table, &ctx);
+
+  return 0;
+}