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-rw-r--r--arch/s390/kernel/ipl.c59
-rw-r--r--arch/s390/kernel/reipl.S6
-rw-r--r--arch/s390/kernel/reipl64.S5
-rw-r--r--arch/s390/kernel/reset.S42
4 files changed, 65 insertions, 47 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index a36bea1188d..9e9972e8a52 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -609,42 +609,12 @@ static ssize_t on_panic_store(struct subsystem *subsys, const char *buf,
static struct subsys_attribute on_panic_attr =
__ATTR(on_panic, 0644, on_panic_show, on_panic_store);
-static void print_fcp_block(struct ipl_parameter_block *fcp_block)
-{
- printk(KERN_EMERG "wwpn: %016llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.wwpn);
- printk(KERN_EMERG "lun: %016llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.lun);
- printk(KERN_EMERG "bootprog: %lld\n",
- (unsigned long long)fcp_block->ipl_info.fcp.bootprog);
- printk(KERN_EMERG "br_lba: %lld\n",
- (unsigned long long)fcp_block->ipl_info.fcp.br_lba);
- printk(KERN_EMERG "device: %llx\n",
- (unsigned long long)fcp_block->ipl_info.fcp.devno);
- printk(KERN_EMERG "opt: %x\n", fcp_block->ipl_info.fcp.opt);
-}
-
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");
- print_fcp_block(reipl_block_fcp);
- break;
- default:
- break;
- }
-
switch (reipl_method) {
case IPL_METHOD_CCW_CIO:
devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
@@ -654,6 +624,7 @@ void do_reipl(void)
reipl_ccw_dev(&devid);
break;
case IPL_METHOD_CCW_VM:
+ reipl_get_ascii_loadparm(loadparm);
if (strlen(loadparm) == 0)
sprintf(buf, "IPL %X",
reipl_block_ccw->ipl_info.ccw.devno);
@@ -683,7 +654,6 @@ void do_reipl(void)
diag308(DIAG308_IPL, NULL);
break;
}
- printk(KERN_EMERG "reboot failed!\n");
signal_processor(smp_processor_id(), sigp_stop_and_store_status);
}
@@ -692,19 +662,6 @@ static void do_dump(void)
struct ccw_dev_id devid;
static char buf[100];
- switch (dump_type) {
- case IPL_TYPE_CCW:
- printk(KERN_EMERG "Automatic dump on ccw device: 0.0.%04x\n",
- dump_block_ccw->ipl_info.ccw.devno);
- break;
- case IPL_TYPE_FCP:
- printk(KERN_EMERG "Automatic dump on fcp device:\n");
- print_fcp_block(dump_block_fcp);
- break;
- default:
- return;
- }
-
switch (dump_method) {
case IPL_METHOD_CCW_CIO:
smp_send_stop();
@@ -1037,15 +994,21 @@ static void do_reset_calls(void)
}
extern void reset_mcck_handler(void);
+extern void reset_pgm_handler(void);
+extern __u32 dump_prefix_page;
void s390_reset_system(void)
{
struct _lowcore *lc;
- /* Stack for interrupt/machine check handler */
lc = (struct _lowcore *)(unsigned long) store_prefix();
+
+ /* Stack for interrupt/machine check handler */
lc->panic_stack = S390_lowcore.panic_stack;
+ /* Save prefix page address for dump case */
+ dump_prefix_page = (unsigned long) lc;
+
/* Disable prefixing */
set_prefix(0);
@@ -1056,5 +1019,11 @@ void s390_reset_system(void)
S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
S390_lowcore.mcck_new_psw.addr =
PSW_ADDR_AMODE | (unsigned long) &reset_mcck_handler;
+
+ /* Set new program check handler */
+ S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS & ~PSW_MASK_MCHECK;
+ S390_lowcore.program_new_psw.addr =
+ PSW_ADDR_AMODE | (unsigned long) &reset_pgm_handler;
+
do_reset_calls();
}
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
index f9434d42ce9..c3f4d9b9508 100644
--- a/arch/s390/kernel/reipl.S
+++ b/arch/s390/kernel/reipl.S
@@ -16,7 +16,7 @@ do_reipl_asm: basr %r13,0
stm %r0,%r15,__LC_GPREGS_SAVE_AREA
stctl %c0,%c15,__LC_CREGS_SAVE_AREA
stam %a0,%a15,__LC_AREGS_SAVE_AREA
- stpx __LC_PREFIX_SAVE_AREA
+ mvc __LC_PREFIX_SAVE_AREA(4),dump_prefix_page-.Lpg0(%r13)
stckc .Lclkcmp-.Lpg0(%r13)
mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
stpt __LC_CPU_TIMER_SAVE_AREA
@@ -79,3 +79,7 @@ do_reipl_asm: basr %r13,0
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
+ .globl dump_prefix_page
+dump_prefix_page:
+ .long 0x00000000
+
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S
index f18ef260ca2..dbb3eed3886 100644
--- a/arch/s390/kernel/reipl64.S
+++ b/arch/s390/kernel/reipl64.S
@@ -20,7 +20,7 @@ do_reipl_asm: basr %r13,0
stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1)
stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1)
stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1)
- stpx __LC_PREFIX_SAVE_AREA-0x1000(%r1)
+ mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),dump_prefix_page-.Lpg0(%r13)
stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1)
stckc .Lclkcmp-.Lpg0(%r13)
mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13)
@@ -103,3 +103,6 @@ do_reipl_asm: basr %r13,0
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
.long 0x00000000,0x00000000
+ .globl dump_prefix_page
+dump_prefix_page:
+ .long 0x00000000
diff --git a/arch/s390/kernel/reset.S b/arch/s390/kernel/reset.S
index be8688c0665..8a87355161f 100644
--- a/arch/s390/kernel/reset.S
+++ b/arch/s390/kernel/reset.S
@@ -3,6 +3,7 @@
*
* Copyright (C) IBM Corp. 2006
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ * Michael Holzheu <holzheu@de.ibm.com>
*/
#include <asm/ptrace.h>
@@ -27,6 +28,26 @@ reset_mcck_handler:
s390_reset_mcck_handler:
.quad 0
+ .globl reset_pgm_handler
+reset_pgm_handler:
+ stmg %r0,%r15,__LC_SAVE_AREA
+ basr %r13,0
+0: lg %r15,__LC_PANIC_STACK # load panic stack
+ aghi %r15,-STACK_FRAME_OVERHEAD
+ lg %r1,s390_reset_pgm_handler-0b(%r13)
+ ltgr %r1,%r1
+ jz 1f
+ basr %r14,%r1
+ lmg %r0,%r15,__LC_SAVE_AREA
+ lpswe __LC_PGM_OLD_PSW
+1: lpswe disabled_wait_psw-0b(%r13)
+ .globl s390_reset_pgm_handler
+s390_reset_pgm_handler:
+ .quad 0
+ .align 8
+disabled_wait_psw:
+ .quad 0x0002000180000000,0x0000000000000000 + reset_pgm_handler
+
#else /* CONFIG_64BIT */
.globl reset_mcck_handler
@@ -45,4 +66,25 @@ reset_mcck_handler:
s390_reset_mcck_handler:
.long 0
+ .globl reset_pgm_handler
+reset_pgm_handler:
+ stm %r0,%r15,__LC_SAVE_AREA
+ basr %r13,0
+0: l %r15,__LC_PANIC_STACK # load panic stack
+ ahi %r15,-STACK_FRAME_OVERHEAD
+ l %r1,s390_reset_pgm_handler-0b(%r13)
+ ltr %r1,%r1
+ jz 1f
+ basr %r14,%r1
+ lm %r0,%r15,__LC_SAVE_AREA
+ lpsw __LC_PGM_OLD_PSW
+
+1: lpsw disabled_wait_psw-0b(%r13)
+ .globl s390_reset_pgm_handler
+s390_reset_pgm_handler:
+ .long 0
+disabled_wait_psw:
+ .align 8
+ .long 0x000a0000,0x00000000 + reset_pgm_handler
+
#endif /* CONFIG_64BIT */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 09:18:31 +0000