Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / SLOF / slof / ofw.S

diff --git a/qemu/roms/SLOF/slof/ofw.S b/qemu/roms/SLOF/slof/ofw.S
new file mode 100644 (file)
index 0000000..14e1e9d
--- /dev/null
+++ b/qemu/roms/SLOF/slof/ofw.S
@@ -0,0 +1,59 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2011 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <cpu.h>
+#include <xvect.h>
+
+       .section ".slof.loader","ax"
+
+       /* this only works if paflof is running below 4GB */
+       lis     r31, fdt_start@h        /* save address of */
+       ori     r31, r31, fdt_start@l   /* flattened device */
+       std     r3, 0(r31)              /* tree */
+
+       /* this only works if paflof is running below 4GB */
+       lis     r31, romfs_base@h       /* save address of */
+       ori     r31, r31, romfs_base@l  /* the romfs */
+       std     r4, 0(r31)
+
+       /* this only works if paflof is running below 4GB */
+       lis     r31, epapr_magic@h      /* if it is an epapr compliant */
+       ori     r31, r31, epapr_magic@l /* low level firmware; then r6 */
+       std     r6, 0(r31)              /* contains the epapr magic */
+
+       /* this only works if paflof is running below 4GB */
+       lis     r31, epapr_ima_size@h
+       ori     r31, r31, epapr_ima_size@l
+       std     r7, 0(r31)              /* r7 contains the IMA size */
+
+       /* fill in handler address */
+
+       /* this only works if paflof is running below 4GB */
+       mfmsr   r0
+       mtsrr1  r0
+       lis     r3, _slof_text@h
+       ori     r3, r3, _slof_text@l
+       ld      r3, 0(r3)
+       std     r3, XVECT_M_HANDLER(0)
+
+#ifdef BROKEN_SC1
+       /* Patch potentially broken sc 1 instructions */
+       lis     r3, _slof_text@h
+       ori     r3, r3, _slof_text@l
+       lis     r4, _slof_text_end@h
+       ori     r4, r4, _slof_text_end@l
+       li      r5, 0
+       bl      .patch_broken_sc1
+#endif
+
+       /* GO! */
+       ba      0x100