File s390-tools-sles15sp2-23-zipl-add-SIGP_SET_ARCHITECTURE-to-sigp.h-and-use-it.patch of Package s390-tools.19608
Subject: [PATCH] [FEAT VS1804] zipl: add SIGP_SET_ARCHITECTURE to sigp.h and use it
From: Marc Hartmayer <mhartmay@linux.ibm.com>
Summary: genprotimg: Introduce new tool for the creation of PV images
Description: genprotimg takes a kernel, host-key documents, optionally an
initrd, optionally a file with the kernel command line, and it
generates a single, loadable image file. The image consists of a
concatenation of a plain text boot loader, the encrypted
components for kernel, initrd, and cmdline, and the
integrity-protected PV header, containing metadata necessary for
running the guest in PV mode. It's possible to use this image file
as a kernel for zIPL or for a direct kernel boot using QEMU.
Upstream-ID: 0e385a81caf7c266c0784613e0264c03271eb99a
Problem-ID: VS1804
Upstream-Description:
zipl: add SIGP_SET_ARCHITECTURE to sigp.h and use it
This makes the code easier to read.
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
---
include/boot/sigp.h | 1 +
zipl/boot/head.S | 6 ++++--
zipl/boot/stage3.c | 6 ++++--
zipl/boot/tape0.S | 6 ++++--
4 files changed, 13 insertions(+), 6 deletions(-)
--- a/include/boot/sigp.h
+++ b/include/boot/sigp.h
@@ -12,6 +12,7 @@
/* Signal Processor Order Codes */
#define SIGP_STOP_AND_STORE_STATUS 9
+#define SIGP_SET_ARCHITECTURE 18
#define SIGP_SET_MULTI_THREADING 22
#define SIGP_STORE_ASTATUS_AT_ADDRESS 23
--- a/zipl/boot/head.S
+++ b/zipl/boot/head.S
@@ -9,16 +9,18 @@
* it under the terms of the MIT license. See LICENSE for details.
*/
+#include "boot/sigp.h"
+
.section .text.start
.globl _start
_start:
basr %r13,0
0: la %r7,2 /* First try code 2: */
la %r6,0 /* 64 bit psws are restored */
- sigp %r7,%r6,0x12 /* Switch to 64 bit */
+ sigp %r7,%r6,SIGP_SET_ARCHITECTURE /* Switch to 64 bit */
bc 8,.Lswitched_64-0b(%r13) /* Accepted ? */
la %r7,1 /* Failed - try code 1 */
- sigp %r7,%r6,0x12 /* Switch to 64 bit */
+ sigp %r7,%r6,SIGP_SET_ARCHITECTURE /* Switch to 64 bit */
.Lswitched_64:
sam64 /* Switch to 64 bit addr mode */
basr %r13,0
--- a/zipl/boot/stage3.c
+++ b/zipl/boot/stage3.c
@@ -10,6 +10,7 @@
*/
#include "libc.h"
+#include "boot/sigp.h"
#include "s390.h"
#include "stage3.h"
#include "error.h"
@@ -194,11 +195,12 @@ static inline void __noreturn start_kern
" sam31\n"
" sr %r1,%r1\n"
" sr %r2,%r2\n"
- " sigp %r1,%r2,0x12\n"
+ " sigp %r1,%r2,%[order]\n"
" lpsw 0\n"
: [addr] "=&d" (addr),
[code] "+&d" (code)
- : [psw] "a" (psw) );
+ : [psw] "a" (psw),
+ [order] "L" (SIGP_SET_ARCHITECTURE));
while (1);
}
--- a/zipl/boot/tape0.S
+++ b/zipl/boot/tape0.S
@@ -7,6 +7,8 @@
# it under the terms of the MIT license. See LICENSE for details.
#
+#include "boot/sigp.h"
+
IPL_BS = 1024 # block size for tape access
IPL_OFF = 0x4000 # temporary kernel load addr
COMMAND_LINE_SIZE = 896 # max command line length
@@ -184,10 +186,10 @@ iplstart:
0:
la %r7,2 #/* First try code 2: */
la %r6,0 #/* 64 bit psws are restored */
- sigp %r7,%r6,0x12 #/* Switch to 64 bit */
+ sigp %r7,%r6,SIGP_SET_ARCHITECTURE #/* Switch to 64 bit */
bc 8,.Lswitched_64-0b(%r13) #/* Accepted ? */
la %r7,1 #/* Failed - try code 1 */
- sigp %r7,%r6,0x12 #/* Switch to 64 bit */
+ sigp %r7,%r6,SIGP_SET_ARCHITECTURE #/* Switch to 64 bit */
.Lswitched_64:
sam64 #/* Switch to 64 bit addr mode */
basr %r13,0
