Extend automated tests to qemu-mips.

* Makefile.am: reorganise tests and enable qemu-mips.
	* configure.ac (COND_mipseb), (COND_mipsel): New conditions.
	* grub-core/tests/boot/linux.init-mips.S: New file.
	* tests/partmap_test.in: Handle ata0 disks.
	* tests/util/grub-shell.in: Handle qemu-mips. Make defaults work on
	non-pc i386.

grub-core/tests/boot/linux.init-mips.S

@@ -0,0 +1,58 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 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/>.
+ */
+
+#define SYSCALL_WRITE 4004
+#define SYSCALL_RESET 4088
+#define SYSCALL_EXIT 4001
+
+#define STDOUT 1
+#define SHUTDOWN_MAGIC1 0xfee1dead
+#define SHUTDOWN_MAGIC2 0x28121969
+#define SHUTDOWN_MAGIC3 0x4321fedc
+
+	.text
+	.global start, _start, __start
+__start:	
+_start:
+start:
+	/* write.  */
+	li $v0, SYSCALL_WRITE
+	li $a0, STDOUT
+	lui $a1, %hi(message)
+	addiu $a1, %lo(message)
+	lui $a2, %hi(messageend)
+	addiu $a2, %lo(messageend)
+	subu $a2, $a2, $a1
+	syscall
+
+	/* shutdown.  */
+	li $v0, SYSCALL_RESET
+	li $a0, SHUTDOWN_MAGIC1
+	li $a1, SHUTDOWN_MAGIC2
+	li $a2, SHUTDOWN_MAGIC3
+	syscall
+
+	/* exit(1). Shouldn't be reached.  */
+	li $v0, SYSCALL_EXIT
+	li $a0, 1
+	syscall
+
+	.data
+message:
+	.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
+messageend: