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[Qemu-devel] [PATCH 04/12] S390: ccw firmware: Add start assembly
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 04/12] S390: ccw firmware: Add start assembly |
Date: |
Mon, 22 Apr 2013 21:18:10 +0200 |
We want to write most of our code in C, so add a small assembly
stub that jumps straight into C code for us to continue booting.
Signed-off-by: Alexander Graf <address@hidden>
---
pc-bios/s390-ccw/start.S | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
create mode 100644 pc-bios/s390-ccw/start.S
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
new file mode 100644
index 0000000..c2b9a19
--- /dev/null
+++ b/pc-bios/s390-ccw/start.S
@@ -0,0 +1,16 @@
+/*
+ * First stage boot loader for virtio devices. The compiled output goes
+ * into the pc-bios directory of qemu.
+ *
+ * Copyright (c) 2013 Alexander Graf <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+ .globl _start
+_start:
+
+larl %r15, stack + 0x8000 /* Set up stack */
+j main /* And call C */
--
1.6.0.2
- [Qemu-devel] [PATCH 00/12] S390: Add virtio-ccw firmware, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 04/12] S390: ccw firmware: Add start assembly,
Alexander Graf <=
- [Qemu-devel] [PATCH 01/12] S390: Make IPL reset address dynamic, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 02/12] S390: IPL: Support ELF firmware, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 10/12] S390: ccw firmware: Add Makefile, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 12/12] S390: CCW: Use new, working firmware by default, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 11/12] S390: ccw firmware: Add compiled blob, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 08/12] S390: ccw firmware: Add glue header, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 06/12] S390: ccw firmware: Add sclp output, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 09/12] S390: ccw firmware: Add bootmap interpreter, Alexander Graf, 2013/04/22
- [Qemu-devel] [PATCH 03/12] S390: IPL: Use different firmware for different machines, Alexander Graf, 2013/04/22