Merge mainline into newreloc. For now without boot tests

2010-08-25 03:25:18 +02:00 · 2010-08-25 03:25:18 +02:00 · 16bd6cfab2
commit 16bd6cfab2
parent 262d4a94a0 04ddcc6a88
625 changed files with 45066 additions and 10823 deletions
--- a/grub-core/loader/xnu_resume.c
+++ b/grub-core/loader/xnu_resume.c
@ -0,0 +1,171 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009  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/normal.h>
+#include <grub/dl.h>
+#include <grub/file.h>
+#include <grub/disk.h>
+#include <grub/misc.h>
+#include <grub/xnu.h>
+#include <grub/cpu/xnu.h>
+#include <grub/mm.h>
+#include <grub/loader.h>
+
+static void *grub_xnu_hibernate_image;
+
+static grub_err_t
+grub_xnu_resume_unload (void)
+{
+  /* Free loaded image */
+  if (grub_xnu_hibernate_image)
+    grub_free (grub_xnu_hibernate_image);
+  grub_xnu_hibernate_image = 0;
+  grub_xnu_unlock ();
+  return GRUB_ERR_NONE;
+}
+
+grub_err_t
+grub_xnu_resume (char *imagename)
+{
+  grub_file_t file;
+  grub_size_t total_header_size;
+  struct grub_xnu_hibernate_header hibhead;
+  void *code;
+  void *image;
+  grub_uint32_t codedest;
+  grub_uint32_t codesize;
+  grub_addr_t target_image;
+  grub_err_t err;
+
+  file = grub_file_open (imagename);
+  if (! file)
+    return 0;
+
+  /* Read the header. */
+  if (grub_file_read (file, &hibhead, sizeof (hibhead))
+      !=sizeof (hibhead))
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_READ_ERROR,
+			 "cannot read the hibernate header");
+    }
+
+  /* Check the header. */
+  if (hibhead.magic != GRUB_XNU_HIBERNATE_MAGIC)
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_BAD_OS,
+			 "hibernate header has incorrect magic number");
+    }
+  if (hibhead.encoffset)
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_BAD_OS,
+			 "encrypted images aren't supported yet");
+    }
+
+  codedest = hibhead.launchcode_target_page;
+  codedest *= GRUB_XNU_PAGESIZE;
+  codesize = hibhead.launchcode_numpages;
+  codesize *= GRUB_XNU_PAGESIZE;
+
+  /* FIXME: check that codedest..codedest+codesize is available. */
+
+  /* Calculate total size before pages to copy. */
+  total_header_size = hibhead.extmapsize + sizeof (hibhead);
+
+  /* Unload image if any. */
+  if (grub_xnu_hibernate_image)
+    grub_free (grub_xnu_hibernate_image);
+
+  /* Try to allocate necessary space.
+     FIXME: mm isn't good enough yet to handle huge allocations.
+   */
+  grub_xnu_relocator = grub_relocator_new ();
+  if (!grub_xnu_relocator)
+    {
+      grub_file_close (file);
+      return grub_errno;
+    }
+
+  {
+    grub_relocator_chunk_t ch;
+    err = grub_relocator_alloc_chunk_addr (grub_xnu_relocator, &ch, codedest,
+					   codesize + GRUB_XNU_PAGESIZE);
+    if (err)
+      {
+	grub_file_close (file);
+	return err;
+      }
+    code = get_virtual_current_address (ch);
+  }
+
+  {
+    grub_relocator_chunk_t ch;
+    err = grub_relocator_alloc_chunk_align (grub_xnu_relocator, &ch, 0,
+					    (0xffffffff - hibhead.image_size) + 1,
+					    hibhead.image_size,
+					    GRUB_XNU_PAGESIZE,
+					    GRUB_RELOCATOR_PREFERENCE_NONE);
+    if (err)
+      {
+	grub_file_close (file);
+	return err;
+      }
+    image = get_virtual_current_address (ch);
+    target_image = get_physical_target_address (ch);
+  }
+
+  /* Read code part. */
+  if (grub_file_seek (file, total_header_size) == (grub_off_t) -1
+      || grub_file_read (file, code, codesize)
+      != (grub_ssize_t) codesize)
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_READ_ERROR, "cannot read resume image");
+    }
+
+  /* Read image. */
+  if (grub_file_seek (file, 0) == (grub_off_t) -1
+      || grub_file_read (file, image, hibhead.image_size)
+      != (grub_ssize_t) hibhead.image_size)
+    {
+      grub_file_close (file);
+      return grub_error (GRUB_ERR_READ_ERROR, "cannot read resume image");
+    }
+  grub_file_close (file);
+
+  /* Setup variables needed by asm helper. */
+  grub_xnu_heap_target_start = codedest;
+  grub_xnu_heap_size = target_image + hibhead.image_size - codedest;
+  grub_xnu_stack = (codedest + hibhead.stack);
+  grub_xnu_entry_point = (codedest + hibhead.entry_point);
+  grub_xnu_arg1 = target_image;
+
+  grub_dprintf ("xnu", "entry point 0x%x\n", codedest + hibhead.entry_point);
+  grub_dprintf ("xnu", "image at 0x%x\n",
+		codedest + codesize + GRUB_XNU_PAGESIZE);
+
+  /* We're ready now. */
+  grub_loader_set (grub_xnu_boot_resume,
+		   grub_xnu_resume_unload, 0);
+
+  /* Prevent module from unloading. */
+  grub_xnu_lock ();
+  return GRUB_ERR_NONE;
+}