Adding upstream version 2.06.upstream/2.06upstream

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

1 files changed, 67 insertions, 0 deletions

diff --git a/grub-core/kern/powerpc/ieee1275/startup.S b/grub-core/kern/powerpc/ieee1275/startup.S
new file mode 100644
index 0000000..21c884b
--- /dev/null
+++ b/grub-core/kern/powerpc/ieee1275/startup.S
@@ -0,0 +1,67 @@
+/* startup.S - Startup code for the PowerPC.  */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2003,2004,2005,2007,2008  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/symbol.h>
+#include <grub/offsets.h>
+
+.extern __bss_start
+.extern _end
+
+	.text
+	.align	2
+	.globl	start, _start
+start:
+_start:
+	li      2, 0
+	li      13, 0
+
+	/* Stage1 won't zero BSS for us. In other cases, why not do it again?  */
+	lis	6, (__bss_start - 4)@h
+	ori	6, 6, (__bss_start - 4)@l
+
+2:	stb     2, 4(6)
+	addi    6, 6, 1
+	andi.   7, 6, 3
+	cmpi    0, 1, 7, 0
+	bne	2b
+	
+	lis	7, (_end - 4)@h
+	ori	7, 7, (_end - 4)@l
+	subf	7, 6, 7
+	subi    8, 7, 1
+	andi.   8, 8, 3
+	addi    8, 8, 1
+	sub	7, 7, 8
+
+	srwi	7, 7, 2 /* We store 4 bytes at a time.  */
+	mtctr	7
+2:	stwu	2, 4(6) /* We know r2 is already 0 from above.  */
+	bdnz	2b
+
+	mtctr   8
+2:	stb	2, 4(6) /* We know r2 is already 0 from above.  */
+	addi    6, 6, 1
+	bdnz	2b
+
+	/* Store r5 in grub_ieee1275_entry_fn.  */
+	lis	9, grub_ieee1275_entry_fn@ha
+	stw	5, grub_ieee1275_entry_fn@l(9)
+
+	bl	grub_main
+1:	b	1b