[S390] sclp: introduce some new interfaces.
Introduce some new interfaces so that random subsystems don't have to
mess around with sclp internal structures.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 367caf9..82b131d 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -25,10 +25,6 @@
#define IPL_PARM_BLOCK_VERSION 0
-#define SCCB_VALID (s390_readinfo_sccb.header.response_code == 0x10)
-#define SCCB_LOADPARM (&s390_readinfo_sccb.loadparm)
-#define SCCB_FLAG (s390_readinfo_sccb.flags)
-
#define IPL_UNKNOWN_STR "unknown"
#define IPL_CCW_STR "ccw"
#define IPL_FCP_STR "fcp"
@@ -146,6 +142,8 @@
static enum shutdown_action on_panic_action = SHUTDOWN_STOP;
+static struct sclp_ipl_info sclp_ipl_info;
+
int diag308(unsigned long subcode, void *addr)
{
register unsigned long _addr asm("0") = (unsigned long) addr;
@@ -375,9 +373,9 @@
{
char loadparm[LOADPARM_LEN + 1] = {};
- if (!SCCB_VALID)
+ if (!sclp_ipl_info.is_valid)
return sprintf(page, "#unknown#\n");
- memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN);
+ memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN);
EBCASC(loadparm, LOADPARM_LEN);
strstrip(loadparm);
return sprintf(page, "%s\n", loadparm);
@@ -910,9 +908,9 @@
reipl_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN;
reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW;
/* check if read scp info worked and set loadparm */
- if (SCCB_VALID)
+ if (sclp_ipl_info.is_valid)
memcpy(reipl_block_ccw->ipl_info.ccw.load_param,
- SCCB_LOADPARM, LOADPARM_LEN);
+ &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,
@@ -1007,7 +1005,7 @@
{
int rc;
- if(!(SCCB_FLAG & 0x2) || !SCCB_VALID)
+ if (!sclp_ipl_info.has_dump)
return 0; /* LDIPL DUMP is not installed */
if (!diag308_set_works)
return 0;
@@ -1088,6 +1086,7 @@
{
int rc;
+ sclp_get_ipl_info(&sclp_ipl_info);
reipl_probe();
rc = ipl_init();
if (rc)