[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-ppc] [PATCH 05/24] S390: ccw firmware: Add main program
From: |
Alexander Graf |
Subject: |
[Qemu-ppc] [PATCH 05/24] S390: ccw firmware: Add main program |
Date: |
Fri, 26 Apr 2013 20:19:14 +0200 |
This C file is the main driving piece of the s390 ccw firmware. It
provides a search for a workable block device, sets it as the default
to boot off of and boots from it.
Signed-off-by: Alexander Graf <address@hidden>
---
pc-bios/s390-ccw/main.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 56 insertions(+), 0 deletions(-)
create mode 100644 pc-bios/s390-ccw/main.c
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
new file mode 100644
index 0000000..0913aac
--- /dev/null
+++ b/pc-bios/s390-ccw/main.c
@@ -0,0 +1,56 @@
+/*
+ * S390 virtio-ccw loading program
+ *
+ * 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.
+ */
+
+#include "s390-ccw.h"
+
+struct subchannel_id blk_schid;
+char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
+
+void virtio_panic(const char *string)
+{
+ sclp_print(string);
+ while (1) { }
+}
+
+static void virtio_setup(void)
+{
+ struct irb irb;
+ int i;
+ int r;
+ bool found = false;
+
+ blk_schid.one = 1;
+
+ for (i = 0; i < 0x10000; i++) {
+ blk_schid.sch_no = i;
+ r = tsch(blk_schid, &irb);
+ if (r != 3) {
+ if (virtio_is_blk(blk_schid)) {
+ found = true;
+ break;
+ }
+ }
+ }
+
+ if (!found) {
+ virtio_panic("No virtio-blk device found!\n");
+ }
+
+ virtio_setup_block(blk_schid);
+}
+
+int main(void)
+{
+ sclp_setup();
+ virtio_setup();
+ if (zipl_load() < 0)
+ sclp_print("Failed to load OS from hard disk\n");
+ while (1) { }
+}
--
1.6.0.2
- [Qemu-ppc] [PULL 00/24] s390 patch queue 2013-04-26, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 02/24] S390: IPL: Support ELF firmware, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 04/24] S390: ccw firmware: Add start assembly, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 01/24] S390: Make IPL reset address dynamic, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 13/24] s390-ccw.img: Take care of the elf->img transition, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 11/24] s390-ccw.img: replace while loop with a disabled wait on s390 bios, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 10/24] S390: ccw firmware: Add Makefile, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 12/24] s390-ccw.img: build s390-ccw rom on s3900 system by default, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 14/24] s390-ccw.img: Fix compile warning in s390 ccw virtio code, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 05/24] S390: ccw firmware: Add main program,
Alexander Graf <=
- [Qemu-ppc] [PATCH 08/24] S390: ccw firmware: Add glue header, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 09/24] S390: ccw firmware: Add bootmap interpreter, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 18/24] s390-ccw.img: Get queue config from host., Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 23/24] Utilize selective runtime reg sync for hot code paths, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 20/24] S390: CCW: Use new, working firmware by default, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 06/24] S390: ccw firmware: Add sclp output, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 15/24] s390-ccw.img: Detect devices with stsch., Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 03/24] S390: IPL: Use different firmware for different machines, Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 17/24] s390-ccw.img: Rudimentary error checking., Alexander Graf, 2013/04/26
- [Qemu-ppc] [PATCH 24/24] virtio-rng-s390: add properties., Alexander Graf, 2013/04/26