[S390] Extra Kernel Parameters via VMPARM
Now it is possible to specify additional kernel parameters on the IPL
command line using the IPL PARM option.
If the Linux system is already running, the new reipl sysfs attribute
'parm' can be used to change kernel parameters for the next reboot.
Examples:
IPL C PARM dasd=1234 root=/dev/dasda1
IPL 1234 PARM savesys=mylnxnss
echo "init=/bin/bash" > /sys/firmware/reipl/ccw/parm
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index b2226e4..e224739 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/pfn.h>
#include <linux/uaccess.h>
+#include <asm/ebcdic.h>
#include <asm/ipl.h>
#include <asm/lowcore.h>
#include <asm/processor.h>
@@ -26,12 +27,40 @@
/*
* Create a Kernel NSS if the SAVESYS= parameter is defined
*/
-#define DEFSYS_CMD_SIZE 96
+#define DEFSYS_CMD_SIZE 128
#define SAVESYS_CMD_SIZE 32
char kernel_nss_name[NSS_NAME_SIZE + 1];
+static void __init setup_boot_command_line(void);
+
+
#ifdef CONFIG_SHARED_KERNEL
+int __init savesys_ipl_nss(char *cmd, const int cmdlen);
+
+asm(
+ " .section .init.text,\"ax\",@progbits\n"
+ " .align 4\n"
+ " .type savesys_ipl_nss, @function\n"
+ "savesys_ipl_nss:\n"
+#ifdef CONFIG_64BIT
+ " stmg 6,15,48(15)\n"
+ " lgr 14,3\n"
+ " sam31\n"
+ " diag 2,14,0x8\n"
+ " sam64\n"
+ " lgr 2,14\n"
+ " lmg 6,15,48(15)\n"
+#else
+ " stm 6,15,24(15)\n"
+ " lr 14,3\n"
+ " diag 2,14,0x8\n"
+ " lr 2,14\n"
+ " lm 6,15,24(15)\n"
+#endif
+ " br 14\n"
+ " .size savesys_ipl_nss, .-savesys_ipl_nss\n");
+
static noinline __init void create_kernel_nss(void)
{
unsigned int i, stext_pfn, eshared_pfn, end_pfn, min_size;
@@ -39,6 +68,7 @@
unsigned int sinitrd_pfn, einitrd_pfn;
#endif
int response;
+ size_t len;
char *savesys_ptr;
char upper_command_line[COMMAND_LINE_SIZE];
char defsys_cmd[DEFSYS_CMD_SIZE];
@@ -49,8 +79,8 @@
return;
/* Convert COMMAND_LINE to upper case */
- for (i = 0; i < strlen(COMMAND_LINE); i++)
- upper_command_line[i] = toupper(COMMAND_LINE[i]);
+ for (i = 0; i < strlen(boot_command_line); i++)
+ upper_command_line[i] = toupper(boot_command_line[i]);
savesys_ptr = strstr(upper_command_line, "SAVESYS=");
@@ -83,7 +113,8 @@
}
#endif
- sprintf(defsys_cmd, "%s EW MINSIZE=%.7iK", defsys_cmd, min_size);
+ sprintf(defsys_cmd, "%s EW MINSIZE=%.7iK PARMREGS=0-13",
+ defsys_cmd, min_size);
sprintf(savesys_cmd, "SAVESYS %s \n IPL %s",
kernel_nss_name, kernel_nss_name);
@@ -94,13 +125,24 @@
return;
}
- __cpcmd(savesys_cmd, NULL, 0, &response);
+ len = strlen(savesys_cmd);
+ ASCEBC(savesys_cmd, len);
+ response = savesys_ipl_nss(savesys_cmd, len);
- if (response != strlen(savesys_cmd)) {
+ /* On success: response is equal to the command size,
+ * max SAVESYS_CMD_SIZE
+ * On error: response contains the numeric portion of cp error message.
+ * for SAVESYS it will be >= 263
+ */
+ if (response > SAVESYS_CMD_SIZE) {
kernel_nss_name[0] = '\0';
return;
}
+ /* re-setup boot command line with new ipl vm parms */
+ ipl_update_parameters();
+ setup_boot_command_line();
+
ipl_flags = IPL_NSS_VALID;
}
@@ -397,6 +439,26 @@
#endif
}
+/* Set up boot command line */
+static void __init setup_boot_command_line(void)
+{
+ char *parm = NULL;
+
+ /* copy arch command line */
+ strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
+ boot_command_line[ARCH_COMMAND_LINE_SIZE - 1] = 0;
+
+ /* append IPL PARM data to the boot command line */
+ if (MACHINE_IS_VM) {
+ parm = boot_command_line + strlen(boot_command_line);
+ *parm++ = ' ';
+ get_ipl_vmparm(parm);
+ if (parm[0] == '=')
+ memmove(boot_command_line, parm + 1, strlen(parm));
+ }
+}
+
+
/*
* Save ipl parameters, clear bss memory, initialize storage keys
* and create a kernel NSS at startup if the SAVESYS= parm is defined
@@ -411,10 +473,12 @@
init_kernel_storage_key();
lockdep_init();
lockdep_off();
- detect_machine_type();
- create_kernel_nss();
sort_main_extable();
setup_lowcore_early();
+ detect_machine_type();
+ ipl_update_parameters();
+ setup_boot_command_line();
+ create_kernel_nss();
detect_mvpg();
detect_ieee();
detect_csp();
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 5325424..9f6dfd3 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -22,6 +22,7 @@
#include <asm/ebcdic.h>
#include <asm/reset.h>
#include <asm/sclp.h>
+#include <asm/setup.h>
#define IPL_PARM_BLOCK_VERSION 0
@@ -121,6 +122,7 @@
REIPL_METHOD_FCP_RO_VM,
REIPL_METHOD_FCP_DUMP,
REIPL_METHOD_NSS,
+ REIPL_METHOD_NSS_DIAG,
REIPL_METHOD_DEFAULT,
};
@@ -134,14 +136,15 @@
static int diag308_set_works = 0;
+static struct ipl_parameter_block ipl_block;
+
static int reipl_capabilities = IPL_TYPE_UNKNOWN;
static enum ipl_type reipl_type = IPL_TYPE_UNKNOWN;
static enum ipl_method reipl_method = REIPL_METHOD_DEFAULT;
static struct ipl_parameter_block *reipl_block_fcp;
static struct ipl_parameter_block *reipl_block_ccw;
-
-static char reipl_nss_name[NSS_NAME_SIZE + 1];
+static struct ipl_parameter_block *reipl_block_nss;
static int dump_capabilities = DUMP_TYPE_NONE;
static enum dump_type dump_type = DUMP_TYPE_NONE;
@@ -263,6 +266,56 @@
static struct kobj_attribute sys_ipl_type_attr = __ATTR_RO(ipl_type);
+/* VM IPL PARM routines */
+static void reipl_get_ascii_vmparm(char *dest,
+ const struct ipl_parameter_block *ipb)
+{
+ int i;
+ int len = 0;
+ char has_lowercase = 0;
+
+ if ((ipb->ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID) &&
+ (ipb->ipl_info.ccw.vm_parm_len > 0)) {
+
+ len = ipb->ipl_info.ccw.vm_parm_len;
+ memcpy(dest, ipb->ipl_info.ccw.vm_parm, len);
+ /* If at least one character is lowercase, we assume mixed
+ * case; otherwise we convert everything to lowercase.
+ */
+ for (i = 0; i < len; i++)
+ if ((dest[i] > 0x80 && dest[i] < 0x8a) || /* a-i */
+ (dest[i] > 0x90 && dest[i] < 0x9a) || /* j-r */
+ (dest[i] > 0xa1 && dest[i] < 0xaa)) { /* s-z */
+ has_lowercase = 1;
+ break;
+ }
+ if (!has_lowercase)
+ EBC_TOLOWER(dest, len);
+ EBCASC(dest, len);
+ }
+ dest[len] = 0;
+}
+
+void get_ipl_vmparm(char *dest)
+{
+ if (diag308_set_works && (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_CCW))
+ reipl_get_ascii_vmparm(dest, &ipl_block);
+ else
+ dest[0] = 0;
+}
+
+static ssize_t ipl_vm_parm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ char parm[DIAG308_VMPARM_SIZE + 1] = {};
+
+ get_ipl_vmparm(parm);
+ return sprintf(page, "%s\n", parm);
+}
+
+static struct kobj_attribute sys_ipl_vm_parm_attr =
+ __ATTR(parm, S_IRUGO, ipl_vm_parm_show, NULL);
+
static ssize_t sys_ipl_device_show(struct kobject *kobj,
struct kobj_attribute *attr, char *page)
{
@@ -370,15 +423,27 @@
static struct kobj_attribute sys_ipl_ccw_loadparm_attr =
__ATTR(loadparm, 0444, ipl_ccw_loadparm_show, NULL);
-static struct attribute *ipl_ccw_attrs[] = {
+static struct attribute *ipl_ccw_attrs_vm[] = {
+ &sys_ipl_type_attr.attr,
+ &sys_ipl_device_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
+ &sys_ipl_vm_parm_attr.attr,
+ NULL,
+};
+
+static struct attribute *ipl_ccw_attrs_lpar[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_device_attr.attr,
&sys_ipl_ccw_loadparm_attr.attr,
NULL,
};
-static struct attribute_group ipl_ccw_attr_group = {
- .attrs = ipl_ccw_attrs,
+static struct attribute_group ipl_ccw_attr_group_vm = {
+ .attrs = ipl_ccw_attrs_vm,
+};
+
+static struct attribute_group ipl_ccw_attr_group_lpar = {
+ .attrs = ipl_ccw_attrs_lpar
};
/* NSS ipl device attributes */
@@ -388,6 +453,8 @@
static struct attribute *ipl_nss_attrs[] = {
&sys_ipl_type_attr.attr,
&sys_ipl_nss_name_attr.attr,
+ &sys_ipl_ccw_loadparm_attr.attr,
+ &sys_ipl_vm_parm_attr.attr,
NULL,
};
@@ -450,7 +517,12 @@
}
switch (ipl_info.type) {
case IPL_TYPE_CCW:
- rc = sysfs_create_group(&ipl_kset->kobj, &ipl_ccw_attr_group);
+ if (MACHINE_IS_VM)
+ rc = sysfs_create_group(&ipl_kset->kobj,
+ &ipl_ccw_attr_group_vm);
+ else
+ rc = sysfs_create_group(&ipl_kset->kobj,
+ &ipl_ccw_attr_group_lpar);
break;
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
@@ -481,6 +553,83 @@
* reipl shutdown action: Reboot Linux on shutdown.
*/
+/* VM IPL PARM attributes */
+static ssize_t reipl_generic_vmparm_show(struct ipl_parameter_block *ipb,
+ char *page)
+{
+ char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
+
+ reipl_get_ascii_vmparm(vmparm, ipb);
+ return sprintf(page, "%s\n", vmparm);
+}
+
+static ssize_t reipl_generic_vmparm_store(struct ipl_parameter_block *ipb,
+ size_t vmparm_max,
+ const char *buf, size_t len)
+{
+ int i, ip_len;
+
+ /* ignore trailing newline */
+ ip_len = len;
+ if ((len > 0) && (buf[len - 1] == '\n'))
+ ip_len--;
+
+ if (ip_len > vmparm_max)
+ return -EINVAL;
+
+ /* parm is used to store kernel options, check for common chars */
+ for (i = 0; i < ip_len; i++)
+ if (!(isalnum(buf[i]) || isascii(buf[i]) || isprint(buf[i])))
+ return -EINVAL;
+
+ memset(ipb->ipl_info.ccw.vm_parm, 0, DIAG308_VMPARM_SIZE);
+ ipb->ipl_info.ccw.vm_parm_len = ip_len;
+ if (ip_len > 0) {
+ ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
+ memcpy(ipb->ipl_info.ccw.vm_parm, buf, ip_len);
+ ASCEBC(ipb->ipl_info.ccw.vm_parm, ip_len);
+ } else {
+ ipb->ipl_info.ccw.vm_flags &= ~DIAG308_VM_FLAGS_VP_VALID;
+ }
+
+ return len;
+}
+
+/* NSS wrapper */
+static ssize_t reipl_nss_vmparm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return reipl_generic_vmparm_show(reipl_block_nss, page);
+}
+
+static ssize_t reipl_nss_vmparm_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ return reipl_generic_vmparm_store(reipl_block_nss, 56, buf, len);
+}
+
+/* CCW wrapper */
+static ssize_t reipl_ccw_vmparm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return reipl_generic_vmparm_show(reipl_block_ccw, page);
+}
+
+static ssize_t reipl_ccw_vmparm_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ return reipl_generic_vmparm_store(reipl_block_ccw, 64, buf, len);
+}
+
+static struct kobj_attribute sys_reipl_nss_vmparm_attr =
+ __ATTR(parm, S_IRUGO | S_IWUSR, reipl_nss_vmparm_show,
+ reipl_nss_vmparm_store);
+static struct kobj_attribute sys_reipl_ccw_vmparm_attr =
+ __ATTR(parm, S_IRUGO | S_IWUSR, reipl_ccw_vmparm_show,
+ reipl_ccw_vmparm_store);
+
/* FCP reipl device attributes */
DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%016llx\n",
@@ -513,27 +662,26 @@
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)
+static void reipl_get_ascii_loadparm(char *loadparm,
+ struct ipl_parameter_block *ibp)
{
- memcpy(loadparm, &reipl_block_ccw->ipl_info.ccw.load_param,
- LOADPARM_LEN);
+ memcpy(loadparm, ibp->ipl_info.ccw.load_parm, LOADPARM_LEN);
EBCASC(loadparm, LOADPARM_LEN);
loadparm[LOADPARM_LEN] = 0;
strstrip(loadparm);
}
-static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *page)
+static ssize_t reipl_generic_loadparm_show(struct ipl_parameter_block *ipb,
+ char *page)
{
char buf[LOADPARM_LEN + 1];
- reipl_get_ascii_loadparm(buf);
+ reipl_get_ascii_loadparm(buf, ipb);
return sprintf(page, "%s\n", buf);
}
-static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
- struct kobj_attribute *attr,
- const char *buf, size_t len)
+static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
+ const char *buf, size_t len)
{
int i, lp_len;
@@ -552,35 +700,128 @@
return -EINVAL;
}
/* initialize loadparm with blanks */
- memset(&reipl_block_ccw->ipl_info.ccw.load_param, ' ', LOADPARM_LEN);
+ memset(ipb->ipl_info.ccw.load_parm, ' ', 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);
+ memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len);
+ ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN);
return len;
}
-static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
- __ATTR(loadparm, 0644, reipl_ccw_loadparm_show,
- reipl_ccw_loadparm_store);
+/* NSS wrapper */
+static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return reipl_generic_loadparm_show(reipl_block_nss, page);
+}
-static struct attribute *reipl_ccw_attrs[] = {
+static ssize_t reipl_nss_loadparm_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ return reipl_generic_loadparm_store(reipl_block_nss, buf, len);
+}
+
+/* CCW wrapper */
+static ssize_t reipl_ccw_loadparm_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return reipl_generic_loadparm_show(reipl_block_ccw, page);
+}
+
+static ssize_t reipl_ccw_loadparm_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ return reipl_generic_loadparm_store(reipl_block_ccw, buf, len);
+}
+
+static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
+ __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
+ reipl_ccw_loadparm_store);
+
+static struct attribute *reipl_ccw_attrs_vm[] = {
+ &sys_reipl_ccw_device_attr.attr,
+ &sys_reipl_ccw_loadparm_attr.attr,
+ &sys_reipl_ccw_vmparm_attr.attr,
+ NULL,
+};
+
+static struct attribute *reipl_ccw_attrs_lpar[] = {
&sys_reipl_ccw_device_attr.attr,
&sys_reipl_ccw_loadparm_attr.attr,
NULL,
};
-static struct attribute_group reipl_ccw_attr_group = {
+static struct attribute_group reipl_ccw_attr_group_vm = {
.name = IPL_CCW_STR,
- .attrs = reipl_ccw_attrs,
+ .attrs = reipl_ccw_attrs_vm,
+};
+
+static struct attribute_group reipl_ccw_attr_group_lpar = {
+ .name = IPL_CCW_STR,
+ .attrs = reipl_ccw_attrs_lpar,
};
/* NSS reipl device attributes */
+static void reipl_get_ascii_nss_name(char *dst,
+ struct ipl_parameter_block *ipb)
+{
+ memcpy(dst, ipb->ipl_info.ccw.nss_name, NSS_NAME_SIZE);
+ EBCASC(dst, NSS_NAME_SIZE);
+ dst[NSS_NAME_SIZE] = 0;
+}
-DEFINE_IPL_ATTR_STR_RW(reipl_nss, name, "%s\n", "%s\n", reipl_nss_name);
+static ssize_t reipl_nss_name_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ char nss_name[NSS_NAME_SIZE + 1] = {};
+
+ reipl_get_ascii_nss_name(nss_name, reipl_block_nss);
+ return sprintf(page, "%s\n", nss_name);
+}
+
+static ssize_t reipl_nss_name_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ int nss_len;
+
+ /* ignore trailing newline */
+ nss_len = len;
+ if ((len > 0) && (buf[len - 1] == '\n'))
+ nss_len--;
+
+ if (nss_len > NSS_NAME_SIZE)
+ return -EINVAL;
+
+ memset(reipl_block_nss->ipl_info.ccw.nss_name, 0x40, NSS_NAME_SIZE);
+ if (nss_len > 0) {
+ reipl_block_nss->ipl_info.ccw.vm_flags |=
+ DIAG308_VM_FLAGS_NSS_VALID;
+ memcpy(reipl_block_nss->ipl_info.ccw.nss_name, buf, nss_len);
+ ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
+ EBC_TOUPPER(reipl_block_nss->ipl_info.ccw.nss_name, nss_len);
+ } else {
+ reipl_block_nss->ipl_info.ccw.vm_flags &=
+ ~DIAG308_VM_FLAGS_NSS_VALID;
+ }
+
+ return len;
+}
+
+static struct kobj_attribute sys_reipl_nss_name_attr =
+ __ATTR(name, S_IRUGO | S_IWUSR, reipl_nss_name_show,
+ reipl_nss_name_store);
+
+static struct kobj_attribute sys_reipl_nss_loadparm_attr =
+ __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_nss_loadparm_show,
+ reipl_nss_loadparm_store);
static struct attribute *reipl_nss_attrs[] = {
&sys_reipl_nss_name_attr.attr,
+ &sys_reipl_nss_loadparm_attr.attr,
+ &sys_reipl_nss_vmparm_attr.attr,
NULL,
};
@@ -617,7 +858,10 @@
reipl_method = REIPL_METHOD_FCP_DUMP;
break;
case IPL_TYPE_NSS:
- reipl_method = REIPL_METHOD_NSS;
+ if (diag308_set_works)
+ reipl_method = REIPL_METHOD_NSS_DIAG;
+ else
+ reipl_method = REIPL_METHOD_NSS;
break;
case IPL_TYPE_UNKNOWN:
reipl_method = REIPL_METHOD_DEFAULT;
@@ -655,11 +899,38 @@
static struct kset *reipl_kset;
+static void get_ipl_string(char *dst, struct ipl_parameter_block *ipb,
+ const enum ipl_method m)
+{
+ char loadparm[LOADPARM_LEN + 1] = {};
+ char vmparm[DIAG308_VMPARM_SIZE + 1] = {};
+ char nss_name[NSS_NAME_SIZE + 1] = {};
+ size_t pos = 0;
+
+ reipl_get_ascii_loadparm(loadparm, ipb);
+ reipl_get_ascii_nss_name(nss_name, ipb);
+ reipl_get_ascii_vmparm(vmparm, ipb);
+
+ switch (m) {
+ case REIPL_METHOD_CCW_VM:
+ pos = sprintf(dst, "IPL %X CLEAR", ipb->ipl_info.ccw.devno);
+ break;
+ case REIPL_METHOD_NSS:
+ pos = sprintf(dst, "IPL %s", nss_name);
+ break;
+ default:
+ break;
+ }
+ if (strlen(loadparm) > 0)
+ pos += sprintf(dst + pos, " LOADPARM '%s'", loadparm);
+ if (strlen(vmparm) > 0)
+ sprintf(dst + pos, " PARM %s", vmparm);
+}
+
static void reipl_run(struct shutdown_trigger *trigger)
{
struct ccw_dev_id devid;
- static char buf[100];
- char loadparm[LOADPARM_LEN + 1];
+ static char buf[128];
switch (reipl_method) {
case REIPL_METHOD_CCW_CIO:
@@ -668,13 +939,7 @@
reipl_ccw_dev(&devid);
break;
case REIPL_METHOD_CCW_VM:
- reipl_get_ascii_loadparm(loadparm);
- if (strlen(loadparm) == 0)
- sprintf(buf, "IPL %X CLEAR",
- reipl_block_ccw->ipl_info.ccw.devno);
- else
- sprintf(buf, "IPL %X CLEAR LOADPARM '%s'",
- reipl_block_ccw->ipl_info.ccw.devno, loadparm);
+ get_ipl_string(buf, reipl_block_ccw, REIPL_METHOD_CCW_VM);
__cpcmd(buf, NULL, 0, NULL);
break;
case REIPL_METHOD_CCW_DIAG:
@@ -691,8 +956,12 @@
case REIPL_METHOD_FCP_RO_VM:
__cpcmd("IPL", NULL, 0, NULL);
break;
+ case REIPL_METHOD_NSS_DIAG:
+ diag308(DIAG308_SET, reipl_block_nss);
+ diag308(DIAG308_IPL, NULL);
+ break;
case REIPL_METHOD_NSS:
- sprintf(buf, "IPL %s", reipl_nss_name);
+ get_ipl_string(buf, reipl_block_nss, REIPL_METHOD_NSS);
__cpcmd(buf, NULL, 0, NULL);
break;
case REIPL_METHOD_DEFAULT:
@@ -707,16 +976,36 @@
disabled_wait((unsigned long) __builtin_return_address(0));
}
-static void __init reipl_probe(void)
+static void reipl_block_ccw_init(struct ipl_parameter_block *ipb)
{
- void *buffer;
+ ipb->hdr.len = IPL_PARM_BLK_CCW_LEN;
+ ipb->hdr.version = IPL_PARM_BLOCK_VERSION;
+ ipb->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
+ ipb->hdr.pbt = DIAG308_IPL_TYPE_CCW;
+}
- buffer = (void *) get_zeroed_page(GFP_KERNEL);
- if (!buffer)
- return;
- if (diag308(DIAG308_STORE, buffer) == DIAG308_RC_OK)
- diag308_set_works = 1;
- free_page((unsigned long)buffer);
+static void reipl_block_ccw_fill_parms(struct ipl_parameter_block *ipb)
+{
+ /* LOADPARM */
+ /* check if read scp info worked and set loadparm */
+ if (sclp_ipl_info.is_valid)
+ memcpy(ipb->ipl_info.ccw.load_parm,
+ &sclp_ipl_info.loadparm, LOADPARM_LEN);
+ else
+ /* read scp info failed: set empty loadparm (EBCDIC blanks) */
+ memset(ipb->ipl_info.ccw.load_parm, 0x40, LOADPARM_LEN);
+ ipb->hdr.flags = DIAG308_FLAGS_LP_VALID;
+
+ /* VM PARM */
+ if (MACHINE_IS_VM && diag308_set_works &&
+ (ipl_block.ipl_info.ccw.vm_flags & DIAG308_VM_FLAGS_VP_VALID)) {
+
+ ipb->ipl_info.ccw.vm_flags |= DIAG308_VM_FLAGS_VP_VALID;
+ ipb->ipl_info.ccw.vm_parm_len =
+ ipl_block.ipl_info.ccw.vm_parm_len;
+ memcpy(ipb->ipl_info.ccw.vm_parm,
+ ipl_block.ipl_info.ccw.vm_parm, DIAG308_VMPARM_SIZE);
+ }
}
static int __init reipl_nss_init(void)
@@ -725,10 +1014,31 @@
if (!MACHINE_IS_VM)
return 0;
+
+ reipl_block_nss = (void *) get_zeroed_page(GFP_KERNEL);
+ if (!reipl_block_nss)
+ return -ENOMEM;
+
+ if (!diag308_set_works)
+ sys_reipl_nss_vmparm_attr.attr.mode = S_IRUGO;
+
rc = sysfs_create_group(&reipl_kset->kobj, &reipl_nss_attr_group);
if (rc)
return rc;
- strncpy(reipl_nss_name, kernel_nss_name, NSS_NAME_SIZE + 1);
+
+ reipl_block_ccw_init(reipl_block_nss);
+ if (ipl_info.type == IPL_TYPE_NSS) {
+ memset(reipl_block_nss->ipl_info.ccw.nss_name,
+ ' ', NSS_NAME_SIZE);
+ memcpy(reipl_block_nss->ipl_info.ccw.nss_name,
+ kernel_nss_name, strlen(kernel_nss_name));
+ ASCEBC(reipl_block_nss->ipl_info.ccw.nss_name, NSS_NAME_SIZE);
+ reipl_block_nss->ipl_info.ccw.vm_flags |=
+ DIAG308_VM_FLAGS_NSS_VALID;
+
+ reipl_block_ccw_fill_parms(reipl_block_nss);
+ }
+
reipl_capabilities |= IPL_TYPE_NSS;
return 0;
}
@@ -740,28 +1050,27 @@
reipl_block_ccw = (void *) get_zeroed_page(GFP_KERNEL);
if (!reipl_block_ccw)
return -ENOMEM;
- rc = sysfs_create_group(&reipl_kset->kobj, &reipl_ccw_attr_group);
- if (rc) {
- free_page((unsigned long)reipl_block_ccw);
- return rc;
+
+ if (MACHINE_IS_VM) {
+ if (!diag308_set_works)
+ sys_reipl_ccw_vmparm_attr.attr.mode = S_IRUGO;
+ rc = sysfs_create_group(&reipl_kset->kobj,
+ &reipl_ccw_attr_group_vm);
+ } else {
+ if(!diag308_set_works)
+ sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
+ rc = sysfs_create_group(&reipl_kset->kobj,
+ &reipl_ccw_attr_group_lpar);
}
- reipl_block_ccw->hdr.len = IPL_PARM_BLK_CCW_LEN;
- reipl_block_ccw->hdr.version = IPL_PARM_BLOCK_VERSION;
- reipl_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
- reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
- reipl_block_ccw->hdr.flags = DIAG308_FLAGS_LP_VALID;
- /* check if read scp info worked and set loadparm */
- if (sclp_ipl_info.is_valid)
- memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
- &sclp_ipl_info.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);
- if (!MACHINE_IS_VM && !diag308_set_works)
- sys_reipl_ccw_loadparm_attr.attr.mode = S_IRUGO;
- if (ipl_info.type == IPL_TYPE_CCW)
+ if (rc)
+ return rc;
+
+ reipl_block_ccw_init(reipl_block_ccw);
+ if (ipl_info.type == IPL_TYPE_CCW) {
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
+ reipl_block_ccw_fill_parms(reipl_block_ccw);
+ }
+
reipl_capabilities |= IPL_TYPE_CCW;
return 0;
}
@@ -1298,7 +1607,6 @@
static int __init s390_ipl_init(void)
{
- reipl_probe();
sclp_get_ipl_info(&sclp_ipl_info);
shutdown_actions_init();
shutdown_triggers_init();
@@ -1405,6 +1713,12 @@
atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
}
+void __init ipl_update_parameters(void)
+{
+ if (diag308(DIAG308_STORE, &ipl_block) == DIAG308_RC_OK)
+ diag308_set_works = 1;
+}
+
void __init ipl_save_parameters(void)
{
struct cio_iplinfo iplinfo;
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index b91caad..e3b4cdb 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -221,18 +221,17 @@
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
static void __init setup_zfcpdump(unsigned int console_devno)
{
- static char str[64];
+ static char str[41];
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return;
if (console_devno != -1)
- sprintf(str, "cio_ignore=all,!0.0.%04x,!0.0.%04x",
+ sprintf(str, " cio_ignore=all,!0.0.%04x,!0.0.%04x",
ipl_info.data.fcp.dev_id.devno, console_devno);
else
- sprintf(str, "cio_ignore=all,!0.0.%04x",
+ sprintf(str, " cio_ignore=all,!0.0.%04x",
ipl_info.data.fcp.dev_id.devno);
- strcat(COMMAND_LINE, " ");
- strcat(COMMAND_LINE, str);
+ strcat(boot_command_line, str);
console_loglevel = 2;
}
#else
@@ -778,11 +777,9 @@
printk("We are running native (64 bit mode)\n");
#endif /* CONFIG_64BIT */
- /* Save unparsed command line copy for /proc/cmdline */
- strlcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
-
- *cmdline_p = COMMAND_LINE;
- *(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0';
+ /* Have one command line that is parsed and saved in /proc/cmdline */
+ /* boot_command_line has been already set up in early.c */
+ *cmdline_p = boot_command_line;
ROOT_DEV = Root_RAM0;
diff --git a/include/asm-s390/ipl.h b/include/asm-s390/ipl.h
index c1b2e50..eaca6df 100644
--- a/include/asm-s390/ipl.h
+++ b/include/asm-s390/ipl.h
@@ -56,15 +56,19 @@
u8 scp_data[];
} __attribute__((packed));
+#define DIAG308_VMPARM_SIZE 64
+
struct ipl_block_ccw {
- u8 load_param[8];
+ u8 load_parm[8];
u8 reserved1[84];
u8 reserved2[2];
u16 devno;
u8 vm_flags;
u8 reserved3[3];
u32 vm_parm_len;
- u8 reserved4[80];
+ u8 nss_name[8];
+ u8 vm_parm[DIAG308_VMPARM_SIZE];
+ u8 reserved4[8];
} __attribute__((packed));
struct ipl_parameter_block {
@@ -73,7 +77,7 @@
struct ipl_block_fcp fcp;
struct ipl_block_ccw ccw;
} ipl_info;
-} __attribute__((packed));
+} __attribute__((packed,aligned(4096)));
/*
* IPL validity flags
@@ -86,6 +90,8 @@
extern void do_halt(void);
extern void do_poff(void);
extern void ipl_save_parameters(void);
+extern void ipl_update_parameters(void);
+extern void get_ipl_vmparm(char *);
enum {
IPL_DEVNO_VALID = 1,
@@ -147,6 +153,11 @@
DIAG308_FLAGS_LP_VALID = 0x80,
};
+enum diag308_vm_flags {
+ DIAG308_VM_FLAGS_NSS_VALID = 0x80,
+ DIAG308_VM_FLAGS_VP_VALID = 0x40,
+};
+
enum diag308_rc {
DIAG308_RC_OK = 1,
};
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index ba69674..f5eebc4 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -8,7 +8,9 @@
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H
-#define COMMAND_LINE_SIZE 896
+#define COMMAND_LINE_SIZE 1024
+
+#define ARCH_COMMAND_LINE_SIZE 896
#ifdef __KERNEL__