* [S390] Add ipl/reipl loadparm attribute.
@ 2006-10-27 11:15 Martin Schwidefsky
2006-10-27 11:57 ` Michael Holzheu
0 siblings, 1 reply; 4+ messages in thread
From: Martin Schwidefsky @ 2006-10-27 11:15 UTC (permalink / raw)
To: linux-kernel, holzheu
From: Michael Holzheu <holzheu@de.ibm.com>
[S390] Add ipl/reipl loadparm attribute.
If multiple kernel images are installed on one DASD, the loadparm can be used
to select the boot configuration. This patch introduces the following two new
sysfs attributes:
/sys/firmware/ipl/loadparm: shows loadparm of current system (ro)
/sys/firmware/reipl/ccw/loadparm: loadparm used for next reboot (rw)
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/ipl.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 94 insertions(+), 4 deletions(-)
diff -urpN linux-2.6/arch/s390/kernel/ipl.c linux-2.6-patched/arch/s390/kernel/ipl.c
--- linux-2.6/arch/s390/kernel/ipl.c 2006-10-27 11:25:37.000000000 +0200
+++ linux-2.6-patched/arch/s390/kernel/ipl.c 2006-10-27 11:26:13.000000000 +0200
@@ -13,12 +13,20 @@
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/reboot.h>
+#include <linux/ctype.h>
#include <asm/smp.h>
#include <asm/setup.h>
#include <asm/cpcmd.h>
#include <asm/cio.h>
+#include <asm/ebcdic.h>
#define IPL_PARM_BLOCK_VERSION 0
+#define LOADPARM_LEN 8
+
+extern char s390_readinfo_sccb[];
+#define SCCB_VALID (*((__u16*)&s390_readinfo_sccb[6]) == 0x0010)
+#define SCCB_LOADPARM (&s390_readinfo_sccb[24])
+#define SCCB_FLAG (s390_readinfo_sccb[91])
enum ipl_type {
IPL_TYPE_NONE = 1,
@@ -289,9 +297,25 @@ static struct attribute_group ipl_fcp_at
/* CCW ipl device attributes */
+static ssize_t ipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+{
+ char loadparm[LOADPARM_LEN + 1] = {};
+
+ if (!SCCB_VALID)
+ return sprintf(page, "#unknown#\n");
+ memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ strstrip(loadparm);
+ return sprintf(page, "%s\n", loadparm);
+}
+
+static struct subsys_attribute sys_ipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
+
static struct attribute *ipl_ccw_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -348,8 +372,57 @@ static struct attribute_group reipl_fcp_
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_ccw->ipl_info.ccw.devno);
+static void reipl_get_ascii_loadparm(char *loadparm)
+{
+ memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
+ LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ loadparm[LOADPARM_LEN] = 0;
+ strstrip(loadparm);
+}
+
+static ssize_t reipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+{
+ char buf[LOADPARM_LEN + 1];
+
+ reipl_get_ascii_loadparm(buf);
+ return sprintf(page, "%s\n", buf);
+}
+
+static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ int i, lp_len;
+
+ /* ignore trailing newline */
+ lp_len = len;
+ if ((len > 0) && (buf[len - 1] == '\n'))
+ lp_len--;
+ /* loadparm can have max 8 characters and must not start with a blank */
+ if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
+ return -EINVAL;
+ /* loadparm can only contain "a-z,A-Z,0-9,SP,." */
+ for (i = 0; i < lp_len; i++) {
+ if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
+ (buf[i] == '.'))
+ continue;
+ return -EINVAL;
+ }
+ /* initialize loadparm with blanks */
+ memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ', LOADPARM_LEN);
+ /* copy and convert to ebcdic */
+ memcpy(&reipl_block_ccw->ipl_info.ccw.load_param, buf, lp_len);
+ ASCEBC(reipl_block_ccw->ipl_info.ccw.load_param, LOADPARM_LEN);
+ return len;
+}
+
+static struct subsys_attribute sys_reipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
+ reipl_ccw_loadparm_store);
+
static struct attribute *reipl_ccw_attrs[] = {
&sys_reipl_ccw_device_attr.attr,
+ &sys_reipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -571,11 +644,14 @@ void do_reipl(void)
{
struct ccw_dev_id devid;
static char buf[100];
+ char loadparm[LOADPARM_LEN + 1];
switch (reipl_type) {
case IPL_TYPE_CCW:
+ reipl_get_ascii_loadparm(loadparm);
printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
reipl_block_ccw->ipl_info.ccw.devno);
+ printk(KERN_EMERG "loadparm = '%s'\n", loadparm);
break;
case IPL_TYPE_FCP:
printk(KERN_EMERG "reboot on fcp device:\n");
@@ -592,7 +668,12 @@ void do_reipl(void)
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
- sprintf(buf, "IPL %X", reipl_block_ccw->ipl_info.ccw.devno);
+ if (strlen(loadparm) == 0)
+ sprintf(buf, "IPL %X",
+ reipl_block_ccw->ipl_info.ccw.devno);
+ else
+ sprintf(buf, "IPL %X LOADPARM '%s'",
+ reipl_block_ccw->ipl_info.ccw.devno, loadparm);
cpcmd(buf, NULL, 0, NULL);
break;
case IPL_METHOD_CCW_DIAG:
@@ -746,6 +827,17 @@ static int __init reipl_ccw_init(void)
reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+ /* check if read scp info worked and set loadparm */
+ if (SCCB_VALID)
+ memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
+ SCCB_LOADPARM, LOADPARM_LEN);
+ else
+ /* read scp info failed: set empty loadparm (EBCDIC blanks) */
+ memset(reipl_block_ccw->ipl_info.ccw.load_param, 0x40,
+ LOADPARM_LEN);
+ /* FIXME: check for diag308_set_works when enabling diag ccw reipl */
+ if (!MACHINE_IS_VM)
+ sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
if (ipl_get_type() == IPL_TYPE_CCW)
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
reipl_capabilities |= IPL_TYPE_CCW;
@@ -827,13 +919,11 @@ static int __init dump_ccw_init(void)
return 0;
}
-extern char s390_readinfo_sccb[];
-
static int __init dump_fcp_init(void)
{
int rc;
- if(!(s390_readinfo_sccb[91] & 0x2))
+ if(!(SCCB_FLAG & 0x2) || !SCCB_VALID)
return 0; /* LDIPL DUMP is not installed */
if (!diag308_set_works)
return 0;
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [S390] Add ipl/reipl loadparm attribute.
2006-10-27 11:15 [S390] Add ipl/reipl loadparm attribute Martin Schwidefsky
@ 2006-10-27 11:57 ` Michael Holzheu
2006-10-27 11:59 ` Martin Schwidefsky
0 siblings, 1 reply; 4+ messages in thread
From: Michael Holzheu @ 2006-10-27 11:57 UTC (permalink / raw)
To: mschwid2; +Cc: linux-kernel
Hi Martin,
Der patch hat eine Abhängikeit auf den strstrip patch.
Muss man das irgendwo dokumentieren?
Michael
------------------------------------------------------------------------
Linux for E-Server Development
Phone: +49-7031-16-2360, Bld 71032-03-U09
Email: holzheu@de.ibm.com
mschwid2@de.ltcfw
d.linux.ibm.com
To
10/27/2006 01:15 linux-kernel@vger.kernel.org,
PM Michael Holzheu/Germany/IBM@IBMDE
cc
Subject
[S390] Add ipl/reipl loadparm
attribute.
From: Michael Holzheu <holzheu@de.ibm.com>
[S390] Add ipl/reipl loadparm attribute.
If multiple kernel images are installed on one DASD, the loadparm can be
used
to select the boot configuration. This patch introduces the following two
new
sysfs attributes:
/sys/firmware/ipl/loadparm: shows loadparm of current system (ro)
/sys/firmware/reipl/ccw/loadparm: loadparm used for next reboot (rw)
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/ipl.c | 98
+++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 94 insertions(+), 4 deletions(-)
diff -urpN linux-2.6/arch/s390/kernel/ipl.c
linux-2.6-patched/arch/s390/kernel/ipl.c
--- linux-2.6/arch/s390/kernel/ipl.c 2006-10-27
11:25:37.000000000 +0200
+++ linux-2.6-patched/arch/s390/kernel/ipl.c 2006-10-27
11:26:13.000000000 +0200
@@ -13,12 +13,20 @@
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/reboot.h>
+#include <linux/ctype.h>
#include <asm/smp.h>
#include <asm/setup.h>
#include <asm/cpcmd.h>
#include <asm/cio.h>
+#include <asm/ebcdic.h>
#define IPL_PARM_BLOCK_VERSION 0
+#define LOADPARM_LEN 8
+
+extern char s390_readinfo_sccb[];
+#define SCCB_VALID (*((__u16*)&s390_readinfo_sccb[6]) == 0x0010)
+#define SCCB_LOADPARM (&s390_readinfo_sccb[24])
+#define SCCB_FLAG (s390_readinfo_sccb[91])
enum ipl_type {
IPL_TYPE_NONE = 1,
@@ -289,9 +297,25 @@ static struct attribute_group ipl_fcp_at
/* CCW ipl device attributes */
+static ssize_t ipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+{
+ char loadparm[LOADPARM_LEN + 1] = {};
+
+ if (!SCCB_VALID)
+ return sprintf(page, "#unknown#\n");
+ memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ strstrip(loadparm);
+ return sprintf(page, "%s\n", loadparm);
+}
+
+static struct subsys_attribute sys_ipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
+
static struct attribute *ipl_ccw_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -348,8 +372,57 @@ static struct attribute_group reipl_fcp_
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_ccw->ipl_info.ccw.devno);
+static void reipl_get_ascii_loadparm(char *loadparm)
+{
+ memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
+ LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ loadparm[LOADPARM_LEN] = 0;
+ strstrip(loadparm);
+}
+
+static ssize_t reipl_ccw_loadparm_show(struct subsystem *subsys, char
*page)
+{
+ char buf[LOADPARM_LEN + 1];
+
+ reipl_get_ascii_loadparm(buf);
+ return sprintf(page, "%s\n", buf);
+}
+
+static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
+ const char
*buf, size_t len)
+{
+ int i, lp_len;
+
+ /* ignore trailing newline */
+ lp_len = len;
+ if ((len > 0) && (buf[len - 1] == '\n'))
+ lp_len--;
+ /* loadparm can have max 8 characters and must not start with
a blank */
+ if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == '
')))
+ return -EINVAL;
+ /* loadparm can only contain "a-z,A-Z,0-9,SP,." */
+ for (i = 0; i < lp_len; i++) {
+ if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i]
== ' ') ||
+ (buf[i] == '.'))
+ continue;
+ return -EINVAL;
+ }
+ /* initialize loadparm with blanks */
+ memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ',
LOADPARM_LEN);
+ /* copy and convert to ebcdic */
+ memcpy(&reipl_block_ccw->ipl_info.ccw.load_param, buf,
lp_len);
+ ASCEBC(reipl_block_ccw->ipl_info.ccw.load_param,
LOADPARM_LEN);
+ return len;
+}
+
+static struct subsys_attribute sys_reipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
+ reipl_ccw_loadparm_store);
+
static struct attribute *reipl_ccw_attrs[] = {
&sys_reipl_ccw_device_attr.attr,
+ &sys_reipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -571,11 +644,14 @@ void do_reipl(void)
{
struct ccw_dev_id devid;
static char buf[100];
+ char loadparm[LOADPARM_LEN + 1];
switch (reipl_type) {
case IPL_TYPE_CCW:
+ reipl_get_ascii_loadparm(loadparm);
printk(KERN_EMERG "reboot on ccw device:
0.0.%04x\n",
reipl_block_ccw->ipl_info.ccw.devno);
+ printk(KERN_EMERG "loadparm = '%s'\n", loadparm);
break;
case IPL_TYPE_FCP:
printk(KERN_EMERG "reboot on fcp device:\n");
@@ -592,7 +668,12 @@ void do_reipl(void)
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
- sprintf(buf, "IPL %X",
reipl_block_ccw->ipl_info.ccw.devno);
+ if (strlen(loadparm) == 0)
+ sprintf(buf, "IPL %X",
+
reipl_block_ccw->ipl_info.ccw.devno);
+ else
+ sprintf(buf, "IPL %X LOADPARM '%s'",
+
reipl_block_ccw->ipl_info.ccw.devno, loadparm);
cpcmd(buf, NULL, 0, NULL);
break;
case IPL_METHOD_CCW_DIAG:
@@ -746,6 +827,17 @@ static int __init reipl_ccw_init(void)
reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
reipl_block_ccw->hdr.blk0_len =
sizeof(reipl_block_ccw->ipl_info.ccw);
reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+ /* check if read scp info worked and set loadparm */
+ if (SCCB_VALID)
+ memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
+ SCCB_LOADPARM, LOADPARM_LEN);
+ else
+ /* read scp info failed: set empty loadparm
(EBCDIC blanks) */
+ memset(reipl_block_ccw->ipl_info.ccw.load_param,
0x40,
+ LOADPARM_LEN);
+ /* FIXME: check for diag308_set_works when enabling diag ccw
reipl */
+ if (!MACHINE_IS_VM)
+ sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
if (ipl_get_type() == IPL_TYPE_CCW)
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
reipl_capabilities |= IPL_TYPE_CCW;
@@ -827,13 +919,11 @@ static int __init dump_ccw_init(void)
return 0;
}
-extern char s390_readinfo_sccb[];
-
static int __init dump_fcp_init(void)
{
int rc;
- if(!(s390_readinfo_sccb[91] & 0x2))
+ if(!(SCCB_FLAG & 0x2) || !SCCB_VALID)
return 0; /* LDIPL DUMP is not installed */
if (!diag308_set_works)
return 0;
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [S390] Add ipl/reipl loadparm attribute.
2006-10-27 11:57 ` Michael Holzheu
@ 2006-10-27 11:59 ` Martin Schwidefsky
0 siblings, 0 replies; 4+ messages in thread
From: Martin Schwidefsky @ 2006-10-27 11:59 UTC (permalink / raw)
To: Michael Holzheu; +Cc: mschwid2, linux-kernel
On Fri, 2006-10-27 at 13:57 +0200, Michael Holzheu wrote:
> Der patch hat eine Abhängikeit auf den strstrip patch.
>
> Muss man das irgendwo dokumentieren?
Nö, Andrew wird den strstrip patch so wie es aussieht noch in 2.6.19
unterbringen und da ist der loadparm patch auch drin.
--
blue skies,
Martin.
Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH
"Reality continues to ruin my life." - Calvin.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [S390] Add ipl/reipl loadparm attribute.
@ 2006-12-04 14:50 Martin Schwidefsky
0 siblings, 0 replies; 4+ messages in thread
From: Martin Schwidefsky @ 2006-12-04 14:50 UTC (permalink / raw)
To: linux-kernel, holzheu
From: Michael Holzheu <holzheu@de.ibm.com>
[S390] Add ipl/reipl loadparm attribute.
If multiple kernel images are installed on one DASD, the loadparm can be used
to select the boot configuration. This patch introduces the following two new
sysfs attributes:
/sys/firmware/ipl/loadparm: shows loadparm of current system (ro)
/sys/firmware/reipl/ccw/loadparm: loadparm used for next reboot (rw)
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/kernel/ipl.c | 98 +++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 94 insertions(+), 4 deletions(-)
diff -urpN linux-2.6/arch/s390/kernel/ipl.c linux-2.6-patched/arch/s390/kernel/ipl.c
--- linux-2.6/arch/s390/kernel/ipl.c 2006-11-29 22:57:37.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/ipl.c 2006-12-04 14:50:33.000000000 +0100
@@ -13,12 +13,20 @@
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/reboot.h>
+#include <linux/ctype.h>
#include <asm/smp.h>
#include <asm/setup.h>
#include <asm/cpcmd.h>
#include <asm/cio.h>
+#include <asm/ebcdic.h>
#define IPL_PARM_BLOCK_VERSION 0
+#define LOADPARM_LEN 8
+
+extern char s390_readinfo_sccb[];
+#define SCCB_VALID (*((__u16*)&s390_readinfo_sccb[6]) == 0x0010)
+#define SCCB_LOADPARM (&s390_readinfo_sccb[24])
+#define SCCB_FLAG (s390_readinfo_sccb[91])
enum ipl_type {
IPL_TYPE_NONE = 1,
@@ -289,9 +297,25 @@ static struct attribute_group ipl_fcp_at
/* CCW ipl device attributes */
+static ssize_t ipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+{
+ char loadparm[LOADPARM_LEN + 1] = {};
+
+ if (!SCCB_VALID)
+ return sprintf(page, "#unknown#\n");
+ memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ strstrip(loadparm);
+ return sprintf(page, "%s\n", loadparm);
+}
+
+static struct subsys_attribute sys_ipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
+
static struct attribute *ipl_ccw_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -348,8 +372,57 @@ static struct attribute_group reipl_fcp_
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_ccw->ipl_info.ccw.devno);
+static void reipl_get_ascii_loadparm(char *loadparm)
+{
+ memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
+ LOADPARM_LEN);
+ EBCASC(loadparm, LOADPARM_LEN);
+ loadparm[LOADPARM_LEN] = 0;
+ strstrip(loadparm);
+}
+
+static ssize_t reipl_ccw_loadparm_show(struct subsystem *subsys, char *page)
+{
+ char buf[LOADPARM_LEN + 1];
+
+ reipl_get_ascii_loadparm(buf);
+ return sprintf(page, "%s\n", buf);
+}
+
+static ssize_t reipl_ccw_loadparm_store(struct subsystem *subsys,
+ const char *buf, size_t len)
+{
+ int i, lp_len;
+
+ /* ignore trailing newline */
+ lp_len = len;
+ if ((len > 0) && (buf[len - 1] == '\n'))
+ lp_len--;
+ /* loadparm can have max 8 characters and must not start with a blank */
+ if ((lp_len > LOADPARM_LEN) || ((lp_len > 0) && (buf[0] == ' ')))
+ return -EINVAL;
+ /* loadparm can only contain "a-z,A-Z,0-9,SP,." */
+ for (i = 0; i < lp_len; i++) {
+ if (isalpha(buf[i]) || isdigit(buf[i]) || (buf[i] == ' ') ||
+ (buf[i] == '.'))
+ continue;
+ return -EINVAL;
+ }
+ /* initialize loadparm with blanks */
+ memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ', LOADPARM_LEN);
+ /* copy and convert to ebcdic */
+ memcpy(&reipl_block_ccw->ipl_info.ccw.load_param, buf, lp_len);
+ ASCEBC(reipl_block_ccw->ipl_info.ccw.load_param, LOADPARM_LEN);
+ return len;
+}
+
+static struct subsys_attribute sys_reipl_ccw_loadparm_attr =
+ __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
+ reipl_ccw_loadparm_store);
+
static struct attribute *reipl_ccw_attrs[] = {
&sys_reipl_ccw_device_attr.attr,
+ &sys_reipl_ccw_loadparm_attr.attr,
NULL,
};
@@ -571,11 +644,14 @@ void do_reipl(void)
{
struct ccw_dev_id devid;
static char buf[100];
+ char loadparm[LOADPARM_LEN + 1];
switch (reipl_type) {
case IPL_TYPE_CCW:
+ reipl_get_ascii_loadparm(loadparm);
printk(KERN_EMERG "reboot on ccw device: 0.0.%04x\n",
reipl_block_ccw->ipl_info.ccw.devno);
+ printk(KERN_EMERG "loadparm = '%s'\n", loadparm);
break;
case IPL_TYPE_FCP:
printk(KERN_EMERG "reboot on fcp device:\n");
@@ -592,7 +668,12 @@ void do_reipl(void)
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
- sprintf(buf, "IPL %X", reipl_block_ccw->ipl_info.ccw.devno);
+ if (strlen(loadparm) == 0)
+ sprintf(buf, "IPL %X",
+ reipl_block_ccw->ipl_info.ccw.devno);
+ else
+ sprintf(buf, "IPL %X LOADPARM '%s'",
+ reipl_block_ccw->ipl_info.ccw.devno, loadparm);
cpcmd(buf, NULL, 0, NULL);
break;
case IPL_METHOD_CCW_DIAG:
@@ -746,6 +827,17 @@ static int __init reipl_ccw_init(void)
reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
reipl_block_ccw->hdr.blk0_len = sizeof(reipl_block_ccw->ipl_info.ccw);
reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+ /* check if read scp info worked and set loadparm */
+ if (SCCB_VALID)
+ memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
+ SCCB_LOADPARM, LOADPARM_LEN);
+ else
+ /* read scp info failed: set empty loadparm (EBCDIC blanks) */
+ memset(reipl_block_ccw->ipl_info.ccw.load_param, 0x40,
+ LOADPARM_LEN);
+ /* FIXME: check for diag308_set_works when enabling diag ccw reipl */
+ if (!MACHINE_IS_VM)
+ sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
if (ipl_get_type() == IPL_TYPE_CCW)
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
reipl_capabilities |= IPL_TYPE_CCW;
@@ -827,13 +919,11 @@ static int __init dump_ccw_init(void)
return 0;
}
-extern char s390_readinfo_sccb[];
-
static int __init dump_fcp_init(void)
{
int rc;
- if(!(s390_readinfo_sccb[91] & 0x2))
+ if(!(SCCB_FLAG & 0x2) || !SCCB_VALID)
return 0; /* LDIPL DUMP is not installed */
if (!diag308_set_works)
return 0;
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2006-12-04 14:51 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2006-10-27 11:15 [S390] Add ipl/reipl loadparm attribute Martin Schwidefsky
2006-10-27 11:57 ` Michael Holzheu
2006-10-27 11:59 ` Martin Schwidefsky
-- strict thread matches above, loose matches on Subject: below --
2006-12-04 14:50 Martin Schwidefsky
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