Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 1450 insertions, 0 deletions

diff --git a/grub-core/kern/mips/arc/init.c b/grub-core/kern/mips/arc/init.c
new file mode 100644
index 0000000..2ed3ff3
--- /dev/null
+++ b/grub-core/kern/mips/arc/init.c
@@ -0,0 +1,463 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009,2010  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/kernel.h>
+#include <grub/misc.h>
+#include <grub/env.h>
+#include <grub/time.h>
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/time.h>
+#include <grub/machine/kernel.h>
+#include <grub/machine/memory.h>
+#include <grub/arc/console.h>
+#include <grub/cpu/memory.h>
+#include <grub/cpu/time.h>
+#include <grub/memory.h>
+#include <grub/term.h>
+#include <grub/arc/arc.h>
+#include <grub/offsets.h>
+#include <grub/i18n.h>
+#include <grub/disk.h>
+#include <grub/partition.h>
+
+const char *type_names[] = {
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+  NULL,
+#endif
+  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
+  "eisa", "tc", "scsi", "dti", "multi", "disk", "tape", "cdrom", "worm",
+  "serial", "net", "video", "par", "point", "key", "audio", "other",
+  "rdisk", "fdisk", "tape", "modem", "monitor", "print", "pointer",
+  "keyboard", "term",
+#ifndef GRUB_CPU_WORDS_BIGENDIAN
+  "other",
+#endif
+  "line", "network", NULL
+};
+
+static int
+iterate_rec (const char *prefix, const struct grub_arc_component *parent,
+	     grub_arc_iterate_devs_hook_t hook, void *hook_data,
+	     int alt_names)
+{
+  const struct grub_arc_component *comp;
+  FOR_ARC_CHILDREN(comp, parent)
+    {
+      char *name;
+      const char *cname = NULL;
+      if (comp->type < ARRAY_SIZE (type_names))
+	cname = type_names[comp->type];
+      if (!cname)
+	cname = "unknown";
+      if (alt_names)
+	name = grub_xasprintf ("%s/%s%lu", prefix, cname, comp->key);
+      else
+	name = grub_xasprintf ("%s%s(%lu)", prefix, cname, comp->key);
+      if (!name)
+	return 1;
+      if (hook (name, comp, hook_data))
+	{
+	  grub_free (name);
+	  return 1;
+	}
+      if (iterate_rec ((parent ? name : prefix), comp, hook, hook_data,
+		       alt_names))
+	{
+	  grub_free (name);
+	  return 1;
+	}
+      grub_free (name);
+    }
+  return 0;
+}
+
+int
+grub_arc_iterate_devs (grub_arc_iterate_devs_hook_t hook, void *hook_data,
+		       int alt_names)
+{
+  return iterate_rec ((alt_names ? "arc" : ""), NULL, hook, hook_data,
+		      alt_names);
+}
+
+grub_err_t
+grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
+{
+  struct grub_arc_memory_descriptor *cur = NULL;
+  while (1)
+    {
+      grub_memory_type_t type;
+      cur = GRUB_ARC_FIRMWARE_VECTOR->getmemorydescriptor (cur);
+      if (!cur)
+	return GRUB_ERR_NONE;
+      switch (cur->type)
+	{
+	case GRUB_ARC_MEMORY_EXCEPTION_BLOCK:
+	case GRUB_ARC_MEMORY_SYSTEM_PARAMETER_BLOCK:
+	case GRUB_ARC_MEMORY_FW_PERMANENT:
+	default:
+	  type = GRUB_MEMORY_RESERVED;
+	  break;
+
+	case GRUB_ARC_MEMORY_FW_TEMPORARY:
+	case GRUB_ARC_MEMORY_FREE:
+	case GRUB_ARC_MEMORY_LOADED:
+	case GRUB_ARC_MEMORY_FREE_CONTIGUOUS:
+	  type = GRUB_MEMORY_AVAILABLE;
+	  break;
+	case GRUB_ARC_MEMORY_BADRAM:
+	  type = GRUB_MEMORY_BADRAM;
+	  break;
+	}
+      if (hook (((grub_uint64_t) cur->start_page) << 12,
+		((grub_uint64_t) cur->num_pages)  << 12, type, hook_data))
+	return GRUB_ERR_NONE;
+    }
+}
+
+char *
+grub_arc_alt_name_to_norm (const char *name, const char *suffix)
+{
+  char *optr;
+  const char *iptr;
+  char * ret = grub_malloc (2 * grub_strlen (name) + grub_strlen (suffix));
+  int state = 0;
+
+  if (!ret)
+    return NULL;
+  optr = ret;
+  for (iptr = name + 4; *iptr; iptr++)
+    if (state == 0)
+      {
+	if (!grub_isdigit (*iptr))
+	  *optr++ = *iptr;
+	else
+	  {
+	    *optr++ = '(';
+	    *optr++ = *iptr;
+	    state = 1;
+	  }
+      }
+    else
+      {
+	if (grub_isdigit (*iptr))
+	  *optr++ = *iptr;
+	else
+	  {
+	    *optr++ = ')';
+	    state = 0;
+	  }
+      }
+  if (state)
+    *optr++ = ')';
+  grub_strcpy (optr, suffix);
+  return ret;
+}
+
+static char *
+norm_name_to_alt (const char *name)
+{
+  char *optr;
+  const char *iptr;
+  int state = 0;
+  char * ret = grub_malloc (grub_strlen (name) + sizeof ("arc/"));
+
+  if (!ret)
+    return NULL;
+  optr = grub_stpcpy (ret, "arc/");
+  for (iptr = name; *iptr; iptr++)
+    {
+      if (state == 3)
+	{
+	  *optr++ = '/';
+	  state = 0;
+	}
+      if (*iptr == '(')
+	{
+	  state = 1;
+	  continue;
+	}
+      if (*iptr == ')')
+	{
+	  if (state == 1)
+	    *optr++ = '0';
+	  state = 3;
+	  continue;
+	}
+      *optr++ = *iptr;
+      if (state == 1)
+	state = 2;
+    }
+  *optr = '\0';
+  return ret;
+}
+
+extern grub_uint32_t grub_total_modules_size __attribute__ ((section(".text")));
+grub_addr_t grub_modbase;
+
+extern char _end[];
+static char boot_location[256];
+
+void
+grub_machine_init (void)
+{
+  struct grub_arc_memory_descriptor *cur = NULL;
+  grub_addr_t modend;
+
+  grub_memcpy (boot_location,
+	       (char *) (GRUB_DECOMPRESSOR_LINK_ADDR - 256), 256);
+
+  grub_modbase = ALIGN_UP ((grub_addr_t) _end, GRUB_KERNEL_MACHINE_MOD_ALIGN);
+  modend = grub_modbase + grub_total_modules_size;
+  grub_console_init_early ();
+
+  /* FIXME: measure this.  */
+  grub_arch_cpuclock = 150000000;
+  grub_install_get_time_ms (grub_rtc_get_time_ms);
+
+  while (1)
+    {
+      grub_uint64_t start, end;
+      cur = GRUB_ARC_FIRMWARE_VECTOR->getmemorydescriptor (cur);
+      if (!cur)
+	break;
+      if (cur->type != GRUB_ARC_MEMORY_FREE
+	  && cur->type != GRUB_ARC_MEMORY_LOADED
+	  && cur->type != GRUB_ARC_MEMORY_FREE_CONTIGUOUS)
+	continue;
+      start = ((grub_uint64_t) cur->start_page) << 12;
+      end = ((grub_uint64_t) cur->num_pages)  << 12;
+      end += start;
+      if ((grub_uint64_t) start < (modend & 0x1fffffff))
+	start = (modend & 0x1fffffff);
+      if ((grub_uint64_t) end > 0x20000000)
+	end = 0x20000000;
+      if (end > start)
+	grub_mm_init_region ((void *) (grub_addr_t) (start | 0x80000000),
+			     end - start);
+    }
+
+  grub_console_init_lately ();
+
+  grub_arcdisk_init ();
+}
+
+void
+grub_machine_fini (int flags __attribute__ ((unused)))
+{
+}
+
+void
+grub_halt (void)
+{
+  GRUB_ARC_FIRMWARE_VECTOR->powerdown ();
+
+  grub_millisleep (1500);
+
+  grub_puts_ (N_("Shutdown failed"));
+  grub_refresh ();
+  while (1);
+}
+
+void
+grub_exit (void)
+{
+  GRUB_ARC_FIRMWARE_VECTOR->exit ();
+
+  grub_millisleep (1500);
+
+  grub_puts_ (N_("Exit failed"));
+  grub_refresh ();
+  while (1);
+}
+
+static char *
+get_part (char *dev)
+{
+  char *ptr;
+  if (!*dev)
+    return 0;
+  ptr = dev + grub_strlen (dev) - 1;
+  if (ptr == dev || *ptr != ')')
+    return 0;
+  ptr--;
+  while (grub_isdigit (*ptr) && ptr > dev)
+    ptr--;
+  if (*ptr != '(' || ptr == dev)
+    return 0;
+  ptr--;
+  if (ptr - dev < (int) sizeof ("partition") - 2)
+    return 0;
+  ptr -= sizeof ("partition") - 2;
+  if (grub_memcmp (ptr, "partition", sizeof ("partition") - 1) != 0)
+    return 0;
+  return ptr;
+}
+
+static grub_disk_addr_t
+get_partition_offset (char *part, grub_disk_addr_t *en)
+{
+  grub_arc_fileno_t handle;
+  grub_disk_addr_t ret = -1;
+  struct grub_arc_fileinfo info;
+  grub_arc_err_t r;
+
+  if (GRUB_ARC_FIRMWARE_VECTOR->open (part, GRUB_ARC_FILE_ACCESS_OPEN_RO,
+				      &handle))
+    return -1;
+
+  r = GRUB_ARC_FIRMWARE_VECTOR->getfileinformation (handle, &info);
+  if (!r)
+    {
+      ret = (info.start >> 9);
+      *en = (info.end >> 9);
+    }
+  GRUB_ARC_FIRMWARE_VECTOR->close (handle);
+  return ret;
+}
+
+struct get_device_name_ctx
+{
+  char *partition_name;
+  grub_disk_addr_t poff, pend;
+};
+
+static int
+get_device_name_iter (grub_disk_t disk __attribute__ ((unused)),
+		      const grub_partition_t part, void *data)
+{
+  struct get_device_name_ctx *ctx = data;
+
+  if (grub_partition_get_start (part) == ctx->poff
+      && grub_partition_get_len (part) == ctx->pend)
+    {
+      ctx->partition_name = grub_partition_get_name (part);
+      return 1;
+    }
+
+  return 0;
+}
+
+void
+grub_machine_get_bootlocation (char **device, char **path)
+{
+  char *loaddev = boot_location;
+  char *pptr, *partptr;
+  char *dname;
+  grub_disk_addr_t poff = -1, pend = -1;
+  struct get_device_name_ctx ctx;
+  grub_disk_t parent = 0;
+  unsigned i;
+
+  for (i = 0; i < ARRAY_SIZE (type_names); i++)
+    if (type_names[i]
+	&& grub_memcmp (loaddev, type_names[i], grub_strlen (type_names[i])) == 0
+	&& loaddev[grub_strlen (type_names[i])] == '(')
+      break;
+  if (i == ARRAY_SIZE (type_names))
+    pptr = loaddev;
+  else
+    for (pptr = loaddev; *pptr && *pptr != '/' && *pptr != '\\'; pptr++);
+  if (*pptr)
+    {
+      char *iptr, *optr;
+      char sep = *pptr;
+      *path = grub_malloc (grub_strlen (pptr) + 1);
+      if (!*path)
+	return;
+      for (iptr = pptr, optr = *path; *iptr; iptr++, optr++)
+	if (*iptr == sep)
+	  *optr = '/';
+	else
+	  *optr = *iptr;
+      *optr = '\0';
+      *path = grub_strdup (pptr);
+      *pptr = '\0';
+    }
+
+  if (*loaddev == '\0')
+    {
+      const char *syspart = 0;
+
+      if (GRUB_ARC_SYSTEM_PARAMETER_BLOCK->firmware_vector_length
+	  >= (unsigned) ((char *) (&GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable + 1)
+			 - (char *) GRUB_ARC_FIRMWARE_VECTOR)
+	  && GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable)
+	syspart = GRUB_ARC_FIRMWARE_VECTOR->getenvironmentvariable ("SystemPartition");
+      if (!syspart)
+	return;
+      loaddev = grub_strdup (syspart);
+    }
+
+  partptr = get_part (loaddev);
+  if (partptr)
+    {
+      poff = get_partition_offset (loaddev, &pend);
+      *partptr = '\0';
+    }
+  dname = norm_name_to_alt (loaddev);
+  if (poff == (grub_addr_t) -1)
+    {
+      *device = dname;
+      if (loaddev != boot_location)
+	grub_free (loaddev);
+      return;
+    }
+
+  parent = grub_disk_open (dname);
+  if (!parent)
+    {
+      *device = dname;
+      if (loaddev != boot_location)
+	grub_free (loaddev);
+      return;
+    }
+
+  if (poff == 0
+      && pend == grub_disk_native_sectors (parent))
+    {
+      grub_disk_close (parent);
+      *device = dname;
+      if (loaddev != boot_location)
+	grub_free (loaddev);
+      return;
+    }
+
+  ctx.partition_name = NULL;
+  ctx.poff = poff;
+  ctx.pend = pend;
+
+  grub_partition_iterate (parent, get_device_name_iter, &ctx);
+  grub_disk_close (parent);
+
+  if (! ctx.partition_name)
+    {
+      *device = dname;
+      if (loaddev != boot_location)
+	grub_free (loaddev);
+      return;
+    }
+
+  *device = grub_xasprintf ("%s,%s", dname,
+			    ctx.partition_name);
+  grub_free (ctx.partition_name);
+  grub_free (dname);
+  if (loaddev != boot_location)
+    grub_free (loaddev);
+}
diff --git a/grub-core/kern/mips/cache.S b/grub-core/kern/mips/cache.S
new file mode 100644
index 0000000..fa331ec
--- /dev/null
+++ b/grub-core/kern/mips/cache.S
@@ -0,0 +1,70 @@
+
+#include <grub/symbol.h>
+
+	.set noreorder
+	.set nomacro
+
+FUNCTION (grub_arch_sync_caches)
+#include "cache_flush.S"
+	j $ra
+	 nop
+
+FUNCTION (grub_arch_sync_dma_caches)
+	move $t2, $a0
+	addu $t3, $a0, $a1
+	srl $t2, $t2, 5
+	sll $t2, $t2, 5
+	addu $t3, $t3, 0x1f
+	srl $t3, $t3, 5
+	sll $t3, $t3, 5
+	move $t0, $t2
+	subu $t1, $t3, $t2
+1:
+	cache_op 1, 0($t0)
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	cache_op 1, 1($t0)
+	cache_op 1, 2($t0)
+	cache_op 1, 3($t0)
+
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x20
+#else
+	addiu $t1, $t1, -4
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
+	move $t0, $t2
+	subu $t1, $t3, $t2
+2:
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	cache_op 0, 0($t0)
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x20
+#else
+	cache_op 0, 0($t0)
+	addiu $t1, $t1, -4
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
+	move $t0, $t2
+	subu $t1, $t3, $t2
+2:
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	cache_op 23, 0($t0)
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x20
+#else
+	cache_op 23, 0($t0)
+	addiu $t1, $t1, -0x4
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
+
+	jr $ra
+	 nop
diff --git a/grub-core/kern/mips/cache_flush.S b/grub-core/kern/mips/cache_flush.S
new file mode 100644
index 0000000..89961a0
--- /dev/null
+++ b/grub-core/kern/mips/cache_flush.S
@@ -0,0 +1,54 @@
+#ifndef CACHE_OP_DEFINED
+#define CACHE_OP_DEFINED 1
+	.macro cache_op op addr
+	.set mips3
+	cache \op, \addr
+	.set mips1
+	.endm
+	.macro sync_op
+	.set mips3
+	sync
+	.set mips1
+	.endm
+#endif
+
+	move $t2, $a0
+	addu $t3, $a0, $a1
+	srl $t2, $t2, 5
+	sll $t2, $t2, 5
+	addu $t3, $t3, 0x1f
+	srl $t3, $t3, 5
+	sll $t3, $t3, 5
+	move $t0, $t2
+	subu $t1, $t3, $t2
+1:
+	cache_op 1, 0($t0)
+	/* All four ways.  */
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	cache_op 1, 1($t0)
+	cache_op 1, 2($t0)
+	cache_op 1, 3($t0)
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x20
+
+#else
+	addiu $t1, $t1, -0x4
+	bne $t1, $zero, 1b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
+	move $t0, $t2
+	subu $t1, $t3, $t2
+2:
+	cache_op 0, 0($t0)
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	addiu $t1, $t1, -0x20
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x20
+#else
+	addiu $t1, $t1, -0x4
+	bne $t1, $zero, 2b
+	 addiu $t0, $t0, 0x4
+#endif
+	sync_op
diff --git a/grub-core/kern/mips/dl.c b/grub-core/kern/mips/dl.c
new file mode 100644
index 0000000..5d7d299
--- /dev/null
+++ b/grub-core/kern/mips/dl.c
@@ -0,0 +1,274 @@
+/* dl-386.c - arch-dependent part of loadable module support */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2002,2005,2007,2009  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/dl.h>
+#include <grub/elf.h>
+#include <grub/misc.h>
+#include <grub/err.h>
+#include <grub/cpu/types.h>
+#include <grub/mm.h>
+#include <grub/i18n.h>
+
+/* Dummy __gnu_local_gp. Resolved by linker.  */
+static char __gnu_local_gp_dummy;
+static char _gp_disp_dummy;
+
+/* Check if EHDR is a valid ELF header.  */
+grub_err_t
+grub_arch_dl_check_header (void *ehdr)
+{
+  Elf_Ehdr *e = ehdr;
+
+  /* Check the magic numbers.  */
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+  if (e->e_ident[EI_CLASS] != ELFCLASS32
+      || e->e_ident[EI_DATA] != ELFDATA2MSB
+      || e->e_machine != EM_MIPS)
+#else
+  if (e->e_ident[EI_CLASS] != ELFCLASS32
+      || e->e_ident[EI_DATA] != ELFDATA2LSB
+      || e->e_machine != EM_MIPS)
+#endif
+    return grub_error (GRUB_ERR_BAD_OS, N_("invalid arch-dependent ELF magic"));
+
+  return GRUB_ERR_NONE;
+}
+
+#pragma GCC diagnostic ignored "-Wcast-align"
+
+grub_err_t
+grub_arch_dl_get_tramp_got_size (const void *ehdr, grub_size_t *tramp,
+				 grub_size_t *got)
+{
+  const Elf_Ehdr *e = ehdr;
+  const Elf_Shdr *s;
+  /* FIXME: suboptimal.  */
+  grub_size_t gp_size = 0;
+  unsigned i;
+
+  *tramp = 0;
+  *got = 0;
+
+  for (i = 0, s = (const Elf_Shdr *) ((const char *) e + e->e_shoff);
+       i < e->e_shnum;
+       i++, s = (const Elf_Shdr *) ((const char *) s + e->e_shentsize))
+    if (s->sh_type == SHT_REL)
+      {
+	const Elf_Rel *rel, *max;
+
+	for (rel = (const Elf_Rel *) ((const char *) e + s->sh_offset),
+	       max = rel + s->sh_size / s->sh_entsize;
+	     rel < max;
+	     rel++)
+	  switch (ELF_R_TYPE (rel->r_info))
+	    {
+	    case R_MIPS_GOT16:
+	    case R_MIPS_CALL16:
+	    case R_MIPS_GPREL32:
+	      gp_size += 4;
+	      break;
+	    }
+      }
+
+  if (gp_size > 0x08000)
+    return grub_error (GRUB_ERR_OUT_OF_RANGE, "__gnu_local_gp is too big\n");
+
+  *got = gp_size;
+
+  return GRUB_ERR_NONE;
+}
+
+/* Relocate symbols.  */
+grub_err_t
+grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
+			       Elf_Shdr *s, grub_dl_segment_t seg)
+{
+  grub_uint32_t gp0;
+  Elf_Ehdr *e = ehdr;
+
+  if (!mod->reginfo)
+    {
+      unsigned i;
+      Elf_Shdr *ri;
+
+      /* Find reginfo. */
+      for (i = 0, ri = (Elf_Shdr *) ((char *) ehdr + e->e_shoff);
+	   i < e->e_shnum;
+	   i++, ri = (Elf_Shdr *) ((char *) ri + e->e_shentsize))
+	if (ri->sh_type == SHT_MIPS_REGINFO)
+	  break;
+      if (i == e->e_shnum)
+	return grub_error (GRUB_ERR_BAD_MODULE, "no reginfo found");
+      mod->reginfo = (grub_uint32_t *)((char *) ehdr + ri->sh_offset);
+    }
+
+  gp0 = mod->reginfo[5];
+  Elf_Rel *rel, *max;
+
+  for (rel = (Elf_Rel *) ((char *) e + s->sh_offset),
+	 max = (Elf_Rel *) ((char *) rel + s->sh_size);
+       rel < max;
+       rel = (Elf_Rel *) ((char *) rel + s->sh_entsize))
+    {
+      grub_uint8_t *addr;
+      Elf_Sym *sym;
+      grub_uint32_t sym_value;
+
+      if (seg->size < rel->r_offset)
+	return grub_error (GRUB_ERR_BAD_MODULE,
+			   "reloc offset is out of the segment");
+
+      addr = (grub_uint8_t *) ((char *) seg->addr + rel->r_offset);
+      sym = (Elf_Sym *) ((char *) mod->symtab
+			 + mod->symsize * ELF_R_SYM (rel->r_info));
+      sym_value = sym->st_value;
+      if (s->sh_type == SHT_RELA)
+	{
+	  sym_value += ((Elf_Rela *) rel)->r_addend;
+	}
+      if (sym_value == (grub_addr_t) &__gnu_local_gp_dummy)
+	sym_value = (grub_addr_t) mod->got;
+      else if (sym_value == (grub_addr_t) &_gp_disp_dummy)
+	{
+	  sym_value = (grub_addr_t) mod->got - (grub_addr_t) addr;
+	  if (ELF_R_TYPE (rel->r_info) == R_MIPS_LO16)
+	    /* ABI mandates +4 even if partner lui doesn't
+	       immediately precede addiu.  */
+	    sym_value += 4;
+	}
+      switch (ELF_R_TYPE (rel->r_info))
+	{
+	case R_MIPS_HI16:
+	  {
+	    grub_uint32_t value;
+	    Elf_Rel *rel2;
+
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+	    addr += 2;
+#endif
+
+	    /* Handle partner lo16 relocation. Lower part is
+	       treated as signed. Hence add 0x8000 to compensate. 
+	    */
+	    value = (*(grub_uint16_t *) addr << 16)
+	      + sym_value + 0x8000;
+	    for (rel2 = rel + 1; rel2 < max; rel2++)
+	      if (ELF_R_SYM (rel2->r_info)
+		  == ELF_R_SYM (rel->r_info)
+		  && ELF_R_TYPE (rel2->r_info) == R_MIPS_LO16)
+		{
+		  value += *(grub_int16_t *)
+		    ((char *) seg->addr + rel2->r_offset
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+		     + 2
+#endif
+		     );
+		  break;
+		}
+	    *(grub_uint16_t *) addr = (value >> 16) & 0xffff;
+	  }
+	  break;
+	case R_MIPS_LO16:
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+	  addr += 2;
+#endif
+	  *(grub_uint16_t *) addr += sym_value & 0xffff;
+	  break;
+	case R_MIPS_32:
+	  *(grub_uint32_t *) addr += sym_value;
+	  break;
+	case R_MIPS_GPREL32:
+	  *(grub_uint32_t *) addr = sym_value
+	    + *(grub_uint32_t *) addr + gp0 - (grub_uint32_t)mod->got;
+	  break;
+
+	case R_MIPS_26:
+	  {
+	    grub_uint32_t value;
+	    grub_uint32_t raw;
+	    raw = (*(grub_uint32_t *) addr) & 0x3ffffff;
+	    value = raw << 2;
+	    value += sym_value;
+	    raw = (value >> 2) & 0x3ffffff;
+			
+	    *(grub_uint32_t *) addr = 
+	      raw | ((*(grub_uint32_t *) addr) & 0xfc000000);
+	  }
+	  break;
+	case R_MIPS_GOT16:
+	  if (ELF_ST_BIND (sym->st_info) == STB_LOCAL)
+	    {
+	      Elf_Rel *rel2;
+	      /* Handle partner lo16 relocation. Lower part is
+		 treated as signed. Hence add 0x8000 to compensate.
+	      */
+	      sym_value += (*(grub_uint16_t *) addr << 16)
+		+ 0x8000;
+	      for (rel2 = rel + 1; rel2 < max; rel2++)
+		if (ELF_R_SYM (rel2->r_info)
+		    == ELF_R_SYM (rel->r_info)
+		    && ELF_R_TYPE (rel2->r_info) == R_MIPS_LO16)
+		  {
+		    sym_value += *(grub_int16_t *)
+		      ((char *) seg->addr + rel2->r_offset
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+		       + 2
+#endif
+		       );
+		    break;
+		  }
+	      sym_value &= 0xffff0000;
+	      *(grub_uint16_t *) addr = 0;
+	    }
+	  /* Fallthrough.  */
+	case R_MIPS_CALL16:
+	  {
+	    grub_uint32_t *gpptr = mod->gotptr;
+	  /* FIXME: reuse*/
+#ifdef GRUB_CPU_WORDS_BIGENDIAN
+	    addr += 2;
+#endif
+	    *gpptr = sym_value + *(grub_uint16_t *) addr;
+	    *(grub_uint16_t *) addr
+	      = sizeof (grub_uint32_t) * (gpptr - (grub_uint32_t *) mod->got);
+	    mod->gotptr = gpptr + 1;
+	    break;
+	  }
+	case R_MIPS_JALR:
+	  break;
+	default:
+	  {
+	    return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
+			       N_("relocation 0x%x is not implemented yet"),
+			       ELF_R_TYPE (rel->r_info));
+	  }
+	  break;
+	}
+    }
+
+  return GRUB_ERR_NONE;
+}
+
+void 
+grub_arch_dl_init_linker (void)
+{
+  grub_dl_register_symbol ("__gnu_local_gp", &__gnu_local_gp_dummy, 0, 0);
+  grub_dl_register_symbol ("_gp_disp", &_gp_disp_dummy, 0, 0);
+}
+
diff --git a/grub-core/kern/mips/init.c b/grub-core/kern/mips/init.c
new file mode 100644
index 0000000..14b8752
--- /dev/null
+++ b/grub-core/kern/mips/init.c
@@ -0,0 +1,38 @@
+/*
+ *  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/kernel.h>
+#include <grub/env.h>
+#include <grub/cpu/time.h>
+#include <grub/cpu/mips.h>
+
+/* FIXME: use interrupt to count high.  */
+grub_uint64_t
+grub_get_rtc (void)
+{
+  static grub_uint32_t high = 0;
+  static grub_uint32_t last = 0;
+  grub_uint32_t low;
+
+  asm volatile ("mfc0 %0, " GRUB_CPU_MIPS_COP0_TIMER_COUNT : "=r" (low));
+  if (low < last)
+    high++;
+  last = low;
+
+  return (((grub_uint64_t) high) << 32) | low;
+}
diff --git a/grub-core/kern/mips/loongson/init.c b/grub-core/kern/mips/loongson/init.c
new file mode 100644
index 0000000..7b96531
--- /dev/null
+++ b/grub-core/kern/mips/loongson/init.c
@@ -0,0 +1,320 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009,2010  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/kernel.h>
+#include <grub/misc.h>
+#include <grub/env.h>
+#include <grub/time.h>
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/machine/time.h>
+#include <grub/machine/kernel.h>
+#include <grub/machine/memory.h>
+#include <grub/memory.h>
+#include <grub/mips/loongson.h>
+#include <grub/cs5536.h>
+#include <grub/term.h>
+#include <grub/cpu/memory.h>
+#include <grub/i18n.h>
+#include <grub/video.h>
+#include <grub/terminfo.h>
+#include <grub/keyboard_layouts.h>
+#include <grub/serial.h>
+#include <grub/loader.h>
+#include <grub/at_keyboard.h>
+
+grub_err_t
+grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
+{
+  hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20,
+	GRUB_MEMORY_AVAILABLE, hook_data);
+  hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20,
+	GRUB_MEMORY_AVAILABLE, hook_data);
+  return GRUB_ERR_NONE;
+}
+
+/* Helper for init_pci.  */
+static int
+set_card (grub_pci_device_t dev, grub_pci_id_t pciid,
+	  void *data __attribute__ ((unused)))
+{
+  grub_pci_address_t addr;
+  /* We could use grub_pci_assign_addresses for this but we prefer to
+     have exactly same memory map as on pmon.  */
+  switch (pciid)
+    {
+    case GRUB_LOONGSON_OHCI_PCIID:
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
+      grub_pci_write (addr, 0x5025000);
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+      grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
+			   | GRUB_PCI_COMMAND_PARITY_ERROR
+			   | GRUB_PCI_COMMAND_BUS_MASTER
+			   | GRUB_PCI_COMMAND_MEM_ENABLED);
+
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
+      grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES);
+      break;
+    case GRUB_LOONGSON_EHCI_PCIID:
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
+      grub_pci_write (addr, 0x5026000);
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+      grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
+			   | GRUB_PCI_COMMAND_PARITY_ERROR
+			   | GRUB_PCI_COMMAND_BUS_MASTER
+			   | GRUB_PCI_COMMAND_MEM_ENABLED);
+
+      addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
+      grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
+			   | GRUB_PCI_STATUS_CAPABILITIES);
+      break;
+    }
+  return 0;
+}
+
+static void
+init_pci (void)
+{
+  *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c;
+  *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff;
+
+  /* Setup PCI controller.  */
+  *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
+				+ GRUB_PCI_REG_COMMAND))
+    = GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER
+    | GRUB_PCI_COMMAND_MEM_ENABLED;
+  *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
+				+ GRUB_PCI_REG_STATUS))
+    = (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
+    | GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE
+    | GRUB_PCI_STATUS_CAPABILITIES;
+
+  *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
+				+ GRUB_PCI_REG_CACHELINE)) = 0xff;
+  *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER 
+				+ GRUB_PCI_REG_ADDRESS_REG0))
+    = 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH;
+  *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER 
+				+ GRUB_PCI_REG_ADDRESS_REG1)) = 0;
+
+  grub_pci_iterate (set_card, NULL);
+}
+
+void
+grub_machine_init (void)
+{
+  grub_addr_t modend;
+  grub_uint32_t prid;
+
+  asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_PRID : "=r" (prid));
+
+  switch (prid)
+    {
+      /* Loongson 2E.  */
+    case 0x6302:
+      grub_arch_machine = GRUB_ARCH_MACHINE_FULOONG2E;
+      grub_bonito_type = GRUB_BONITO_2F;
+      break;
+      /* Loongson 2F.  */
+    case 0x6303:
+      if (grub_arch_machine != GRUB_ARCH_MACHINE_FULOONG2F
+	  && grub_arch_machine != GRUB_ARCH_MACHINE_YEELOONG)
+	grub_arch_machine = GRUB_ARCH_MACHINE_YEELOONG;
+      grub_bonito_type = GRUB_BONITO_2F;
+      break;
+      /* Loongson 3A. */
+    case 0x6305:
+      grub_arch_machine = GRUB_ARCH_MACHINE_YEELOONG_3A;
+      grub_bonito_type = GRUB_BONITO_3A;
+      break;
+    }
+
+  /* FIXME: measure this.  */
+  if (grub_arch_busclock == 0)
+    {
+      grub_arch_busclock = 66000000;
+      grub_arch_cpuclock = 797000000;
+    }
+
+  grub_install_get_time_ms (grub_rtc_get_time_ms);
+
+  if (grub_arch_memsize == 0)
+    {
+      grub_port_t smbbase;
+      grub_err_t err;
+      grub_pci_device_t dev;
+      struct grub_smbus_spd spd;
+      unsigned totalmem;
+      int i;
+
+      if (!grub_cs5536_find (&dev))
+	grub_fatal ("No CS5536 found\n");
+
+      err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase);
+      if (err)
+	grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg);
+
+      /* Yeeloong and Fuloong have only one memory slot.  */
+      err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd);
+      if (err)
+	grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg);
+      for (i = 5; i < 13; i++)
+	if (spd.ddr2.rank_capacity & (1 << (i & 7)))
+	  break;
+      /* Something is wrong.  */
+      if (i == 13)
+	totalmem = 256;
+      else
+	totalmem = ((spd.ddr2.num_of_ranks
+		     & GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2);
+      
+      if (totalmem >= 256)
+	{
+	  grub_arch_memsize = 256;
+	  grub_arch_highmemsize = totalmem - 256;
+	}
+      else
+	{
+	  grub_arch_memsize = totalmem;
+	  grub_arch_highmemsize = 0;
+	}
+
+      grub_cs5536_init_geode (dev);
+
+      init_pci ();
+    }
+
+  modend = grub_modules_get_end ();
+  grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20)
+		       - (modend - GRUB_ARCH_LOWMEMVSTART));
+  /* FIXME: use upper memory as well.  */
+
+  /* Initialize output terminal (can't be done earlier, as gfxterm
+     relies on a working heap.  */
+  grub_video_sm712_init ();
+  grub_video_sis315pro_init ();
+  grub_video_radeon_fuloong2e_init ();
+  grub_video_radeon_yeeloong3a_init ();
+  grub_font_init ();
+  grub_gfxterm_init ();
+
+  grub_keylayouts_init ();
+  if (grub_arch_machine == GRUB_ARCH_MACHINE_YEELOONG
+      || grub_arch_machine == GRUB_ARCH_MACHINE_YEELOONG_3A)
+    grub_at_keyboard_init ();
+
+  grub_terminfo_init ();
+  grub_serial_init ();
+
+  grub_boot_init ();
+}
+
+void
+grub_machine_fini (int flags __attribute__ ((unused)))
+{
+}
+
+static int
+halt_via (grub_pci_device_t dev, grub_pci_id_t pciid,
+	  void *data __attribute__ ((unused)))
+{
+  grub_uint16_t pm;
+  grub_pci_address_t addr;
+
+  if (pciid != 0x30571106)
+    return 0;
+
+  addr = grub_pci_make_address (dev, 0x40);
+  pm = grub_pci_read (addr) & ~1;
+
+  if (pm == 0)
+    {
+      grub_pci_write (addr, 0x1801);
+      pm = 0x1800;
+    }
+
+  addr = grub_pci_make_address (dev, 0x80);
+  grub_pci_write_byte (addr, 0xff);
+
+  addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+  grub_pci_write_word (addr, grub_pci_read_word (addr) | GRUB_PCI_COMMAND_IO_ENABLED);
+
+  /* FIXME: This one is derived from qemu. Check on real hardware.  */
+  grub_outw (0x2000, pm + 4 + GRUB_MACHINE_PCI_IO_BASE);
+  grub_millisleep (5000);
+
+  return 0;
+}
+
+void
+grub_halt (void)
+{
+  switch (grub_arch_machine)
+    {
+    case GRUB_ARCH_MACHINE_FULOONG2E:
+      grub_pci_iterate (halt_via, NULL);
+      break;
+    case GRUB_ARCH_MACHINE_FULOONG2F:
+      {
+	grub_pci_device_t dev;
+	grub_port_t p;
+	if (grub_cs5536_find (&dev))
+	  {
+	    p = (grub_cs5536_read_msr (dev, GRUB_CS5536_MSR_GPIO_BAR)
+		 & GRUB_CS5536_LBAR_ADDR_MASK) + GRUB_MACHINE_PCI_IO_BASE;
+	    grub_outl ((1 << 13), p + 4);
+	    grub_outl ((1 << 29), p);
+	    grub_millisleep (5000);
+	  }
+      }
+      break;
+    case GRUB_ARCH_MACHINE_YEELOONG:
+      grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG)
+		 & ~GRUB_CPU_YEELOONG_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG);
+      grub_millisleep (1500);
+      break;
+    case GRUB_ARCH_MACHINE_YEELOONG_3A:
+      grub_millisleep (1);
+      grub_outb (0x4e, GRUB_MACHINE_PCI_IO_BASE_3A | 0x66);
+      grub_millisleep (1);
+      grub_outb (2, GRUB_MACHINE_PCI_IO_BASE_3A | 0x62);
+      grub_millisleep (5000);
+      break;
+    }
+
+  grub_puts_ (N_("Shutdown failed"));
+  grub_refresh ();
+  while (1);
+}
+
+void
+grub_exit (void)
+{
+  grub_halt ();
+}
+
+void
+grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
+			       char **path __attribute__ ((unused)))
+{
+}
+
+extern char _end[];
+grub_addr_t grub_modbase = (grub_addr_t) _end;
+
diff --git a/grub-core/kern/mips/qemu_mips/init.c b/grub-core/kern/mips/qemu_mips/init.c
new file mode 100644
index 0000000..be88b77
--- /dev/null
+++ b/grub-core/kern/mips/qemu_mips/init.c
@@ -0,0 +1,105 @@
+#include <grub/kernel.h>
+#include <grub/misc.h>
+#include <grub/env.h>
+#include <grub/time.h>
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/time.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/kernel.h>
+#include <grub/machine/console.h>
+#include <grub/cpu/memory.h>
+#include <grub/memory.h>
+#include <grub/video.h>
+#include <grub/terminfo.h>
+#include <grub/keyboard_layouts.h>
+#include <grub/serial.h>
+#include <grub/loader.h>
+#include <grub/at_keyboard.h>
+
+static inline int
+probe_mem (grub_addr_t addr)
+{
+  volatile grub_uint8_t *ptr = (grub_uint8_t *) (0xa0000000 | addr);
+  grub_uint8_t c = *ptr;
+  *ptr = 0xAA;
+  if (*ptr != 0xAA)
+    return 0;
+  *ptr = 0x55;
+  if (*ptr != 0x55)
+    return 0;
+  *ptr = c;
+  return 1;
+}
+
+void
+grub_machine_init (void)
+{
+  grub_addr_t modend;
+
+  if (grub_arch_memsize == 0)
+    {
+      int i;
+      
+      for (i = 27; i >= 0; i--)
+	if (probe_mem (grub_arch_memsize | (1 << i)))
+	  grub_arch_memsize |= (1 << i);
+      grub_arch_memsize++;
+    }
+
+  /* FIXME: measure this.  */
+  grub_arch_cpuclock = 200000000;
+
+  modend = grub_modules_get_end ();
+  grub_mm_init_region ((void *) modend, grub_arch_memsize
+		       - (modend - GRUB_ARCH_LOWMEMVSTART));
+
+  grub_install_get_time_ms (grub_rtc_get_time_ms);
+
+  grub_keylayouts_init ();
+  grub_at_keyboard_init ();
+
+  grub_qemu_init_cirrus ();
+  grub_vga_text_init ();
+
+  grub_terminfo_init ();
+  grub_serial_init ();
+
+  grub_boot_init ();
+}
+
+void
+grub_machine_fini (int flags __attribute__ ((unused)))
+{
+}
+
+void
+grub_exit (void)
+{
+  grub_halt ();
+}
+
+void
+grub_halt (void)
+{
+  grub_outl (42, 0xbfbf0004);
+  while (1);
+}
+
+grub_err_t 
+grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
+{
+  hook (0, grub_arch_memsize, GRUB_MEMORY_AVAILABLE, hook_data);
+  return GRUB_ERR_NONE;
+}
+
+void
+grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
+			       char **path __attribute__ ((unused)))
+{
+}
+
+extern char _end[];
+grub_addr_t grub_modbase = (grub_addr_t) _end;
+
diff --git a/grub-core/kern/mips/startup.S b/grub-core/kern/mips/startup.S
new file mode 100644
index 0000000..1fdb58a
--- /dev/null
+++ b/grub-core/kern/mips/startup.S
@@ -0,0 +1,126 @@
+/* startup.S - Startup code for the MIPS.  */
+/*
+ *  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/symbol.h>
+#include <grub/offsets.h>
+#include <grub/machine/memory.h>
+#include <grub/machine/kernel.h>
+#include <grub/offsets.h>
+#include <grub/mips/asm.h>
+
+#define BASE_ADDR 8	
+
+	.globl __start, _start, start
+	.set noreorder
+	.set nomacro
+__start:
+_start:
+start:		
+.extern __bss_start
+.extern _end
+	bal cont
+	 nop
+
+	.org GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE
+VARIABLE(grub_total_modules_size)
+	.long 0
+
+VARIABLE (grub_arch_busclock)
+	.long 0
+VARIABLE (grub_arch_cpuclock)
+	.long 0
+VARIABLE (grub_arch_memsize)
+	.long 0
+VARIABLE (grub_arch_highmemsize)
+	.long 0
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+VARIABLE (grub_arch_machine)
+	.long GRUB_ARCH_MACHINE_FULOONG2F
+#endif
+cont:
+	/* Save our base.  */
+	move $s0, $ra
+
+#ifdef GRUB_MACHINE_MIPS_QEMU_MIPS
+	lui $t1, %hi(grub_arch_busclock)
+	addiu $t1, %lo(grub_arch_busclock)
+	sw $s4, 8($t1)
+#endif
+
+#ifdef GRUB_MACHINE_MIPS_LOONGSON
+	lui $t1, %hi(grub_arch_busclock)
+	addiu $t1, %lo(grub_arch_busclock)
+	sw $s2, 0($t1)
+	sw $s3, 4($t1)
+	sw $s4, 8($t1)
+	sw $s5, 12($t1)
+	sw $s7, 16($t1)
+#endif
+
+	/* Move the modules out of BSS.  */
+	lui $t2, %hi(__bss_start)
+	addiu $t2, %lo(__bss_start)
+	
+	lui $t1, %hi(_end)
+	addiu $t1, %lo(_end)
+	addiu $t1, (GRUB_KERNEL_MACHINE_MOD_ALIGN - 1)
+	li $t3, (GRUB_KERNEL_MACHINE_MOD_ALIGN - 1)
+	nor $t3, $t3, $0
+	and $t1, $t1, $t3
+	
+	lw $t3, (GRUB_KERNEL_MACHINE_TOTAL_MODULE_SIZE - BASE_ADDR)($s0)
+
+	/* Backward copy.  */
+	add $t1, $t1, $t3
+	add $t2, $t2, $t3
+	addiu $t1, $t1, -1
+	addiu $t2, $t2, -1
+
+	/* $t2 is source. $t1 is destination. $t3 is size.  */
+modulesmovcont:
+	beq $t3, $0, modulesmovdone
+         nop
+	lb GRUB_ASM_T4, 0($t2)
+	sb GRUB_ASM_T4, 0($t1)
+	addiu $t2, $t2, -1
+	addiu $t1, $t1, -1
+	b modulesmovcont
+	 addiu $t3, $t3, -1
+modulesmovdone:
+
+	/* Clean BSS.  */
+	
+	lui $t1, %hi(__bss_start)
+	addiu $t1, $t1, %lo(__bss_start)
+	lui $t2, %hi(_end)
+	addiu $t2, $t2, %lo(_end)
+bsscont:
+	sb $0,0($t1)
+	addiu $t1, $t1, 1
+	sltu $t3, $t1, $t2
+	bne $t3, $0, bsscont
+         nop
+
+	lui $t9, %hi(grub_main)
+	addiu $t9, %lo(grub_main)
+
+	lui $sp, %hi(GRUB_MACHINE_MEMORY_STACK_HIGH)
+	jr $t9
+	 addiu $sp, $sp, %lo(GRUB_MACHINE_MEMORY_STACK_HIGH)
+