diff options
Diffstat (limited to 'arch/s390/kernel/reipl.S')
| -rw-r--r-- | arch/s390/kernel/reipl.S | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S index b75a521e4fab..89ea8c213d82 100644 --- a/arch/s390/kernel/reipl.S +++ b/arch/s390/kernel/reipl.S @@ -9,12 +9,11 @@ #include <asm/sigp.h> # -# store_status +# Issue "store status" for the current CPU to its prefix page +# and call passed function afterwards # -# Prerequisites to run this function: -# - Prefix register is set to zero -# - Original prefix register is stored in "dump_prefix_page" -# - Lowcore protection is off +# r2 = Function to be called after store status +# r3 = Parameter for function # ENTRY(store_status) /* Save register one and load save area base */ @@ -53,23 +52,23 @@ ENTRY(store_status) /* CPU timer */ lghi %r1,__LC_CPU_TIMER_SAVE_AREA stpt 0(%r1) - /* Saved prefix register */ + /* Store prefix register */ lghi %r1,__LC_PREFIX_SAVE_AREA - larl %r2,dump_prefix_page - mvc 0(4,%r1),0(%r2) + stpx 0(%r1) /* Clock comparator - seven bytes */ lghi %r1,__LC_CLOCK_COMP_SAVE_AREA - larl %r2,.Lclkcmp - stckc 0(%r2) - mvc 1(7,%r1),1(%r2) + larl %r4,.Lclkcmp + stckc 0(%r4) + mvc 1(7,%r1),1(%r4) /* Program status word */ lghi %r1,__LC_PSW_SAVE_AREA - epsw %r2,%r3 - st %r2,0(%r1) - st %r3,4(%r1) - larl %r2,store_status + epsw %r4,%r5 + st %r4,0(%r1) + st %r5,4(%r1) stg %r2,8(%r1) - br %r14 + lgr %r1,%r2 + lgr %r2,%r3 + br %r1 .section .bss .align 8 @@ -84,9 +83,11 @@ ENTRY(store_status) ENTRY(do_reipl_asm) basr %r13,0 .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) -.Lpg1: brasl %r14,store_status +.Lpg1: lgr %r3,%r2 + larl %r2,.Lstatus + brasl %r14,store_status - lctlg %c6,%c6,.Lall-.Lpg0(%r13) +.Lstatus: lctlg %c6,%c6,.Lall-.Lpg0(%r13) lgr %r1,%r2 mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13) stsch .Lschib-.Lpg0(%r13) |