diff options
Diffstat (limited to 'arch/s390/kernel/reipl.S')
| -rw-r--r-- | arch/s390/kernel/reipl.S | 147 |
1 files changed, 66 insertions, 81 deletions
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S index dd8016b0477e..69fcaf54d5ca 100644 --- a/arch/s390/kernel/reipl.S +++ b/arch/s390/kernel/reipl.S @@ -1,92 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* - * S390 version - * Copyright IBM Corp. 2000 - * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com) + * Copyright IBM Corp 2000, 2011 + * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>, + * Denis Joseph Barrow, */ #include <linux/linkage.h> #include <asm/asm-offsets.h> +#include <asm/nospec-insn.h> #include <asm/sigp.h> +#include <asm/lowcore.h> -# -# store_status: Empty implementation until kdump is supported on 31 bit -# -ENTRY(store_status) - br %r14 + GEN_BR_THUNK %r9 # -# do_reipl_asm -# Parameter: r2 = schid of reipl device +# Issue "store status" for the current CPU to its prefix page +# and call passed function afterwards +# +# r2 = Function to be called after store status +# r3 = Parameter for function # -ENTRY(do_reipl_asm) - basr %r13,0 -.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13) -.Lpg1: # do store status of all registers +SYM_CODE_START(store_status) + STMG_LC %r0,%r15,__LC_GPREGS_SAVE_AREA + /* General purpose registers */ + GET_LC %r13 + /* Control registers */ + stctg %c0,%c15,__LC_CREGS_SAVE_AREA(%r13) + /* Access registers */ + stamy %a0,%a15,__LC_AREGS_SAVE_AREA(%r13) + /* Floating point registers */ + lay %r1,__LC_FPREGS_SAVE_AREA(%r13) + std %f0, 0x00(%r1) + std %f1, 0x08(%r1) + std %f2, 0x10(%r1) + std %f3, 0x18(%r1) + std %f4, 0x20(%r1) + std %f5, 0x28(%r1) + std %f6, 0x30(%r1) + std %f7, 0x38(%r1) + std %f8, 0x40(%r1) + std %f9, 0x48(%r1) + std %f10,0x50(%r1) + std %f11,0x58(%r1) + std %f12,0x60(%r1) + std %f13,0x68(%r1) + std %f14,0x70(%r1) + std %f15,0x78(%r1) + /* Floating point control register */ + lay %r1,__LC_FP_CREG_SAVE_AREA(%r13) + stfpc 0(%r1) + /* CPU timer */ + lay %r1,__LC_CPU_TIMER_SAVE_AREA(%r13) + stpt 0(%r1) + /* Store prefix register */ + lay %r1,__LC_PREFIX_SAVE_AREA(%r13) + stpx 0(%r1) + /* Clock comparator - seven bytes */ + larl %r4,clkcmp + stckc 0(%r4) + lay %r1,__LC_CLOCK_COMP_SAVE_AREA(%r13) + mvc 1(7,%r1),1(%r4) + /* Program status word */ + lay %r1,__LC_PSW_SAVE_AREA(%r13) + epsw %r4,%r5 + st %r4,0(%r1) + st %r5,4(%r1) + stg %r2,8(%r1) + lgr %r9,%r2 + lgr %r2,%r3 + BR_EX %r9 +SYM_CODE_END(store_status) - stm %r0,%r15,__LC_GPREGS_SAVE_AREA - stctl %c0,%c15,__LC_CREGS_SAVE_AREA - stam %a0,%a15,__LC_AREGS_SAVE_AREA - l %r10,.Ldump_pfx-.Lpg0(%r13) - mvc __LC_PREFIX_SAVE_AREA(4),0(%r10) - stckc .Lclkcmp-.Lpg0(%r13) - mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13) - stpt __LC_CPU_TIMER_SAVE_AREA - st %r13, __LC_PSW_SAVE_AREA+4 - lctl %c6,%c6,.Lall-.Lpg0(%r13) - lr %r1,%r2 - mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13) - stsch .Lschib-.Lpg0(%r13) - oi .Lschib+5-.Lpg0(%r13),0x84 -.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01 - msch .Lschib-.Lpg0(%r13) - lhi %r0,5 -.Lssch: ssch .Liplorb-.Lpg0(%r13) - jz .L001 - brct %r0,.Lssch - bas %r14,.Ldisab-.Lpg0(%r13) -.L001: mvc __LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13) -.Ltpi: lpsw .Lwaitpsw-.Lpg0(%r13) -.Lcont: c %r1,__LC_SUBCHANNEL_ID - jnz .Ltpi - clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13) - jnz .Ltpi - tsch .Liplirb-.Lpg0(%r13) - tm .Liplirb+9-.Lpg0(%r13),0xbf - jz .L002 - bas %r14,.Ldisab-.Lpg0(%r13) -.L002: tm .Liplirb+8-.Lpg0(%r13),0xf3 - jz .L003 - bas %r14,.Ldisab-.Lpg0(%r13) -.L003: st %r1,__LC_SUBCHANNEL_ID - lpsw 0 - sigp 0,0,SIGP_RESTART -.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13) - lpsw .Ldispsw-.Lpg0(%r13) - .align 8 -.Lclkcmp: .quad 0x0000000000000000 -.Lall: .long 0xff000000 -.Ldump_pfx: .long dump_prefix_page - .align 8 -.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1 -.Lpcnew: .long 0x00080000,0x80000000+.Lecs -.Lionew: .long 0x00080000,0x80000000+.Lcont -.Lwaitpsw: .long 0x020a0000,0x00000000+.Ltpi -.Ldispsw: .long 0x000a0000,0x00000000 -.Liplccws: .long 0x02000000,0x60000018 - .long 0x08000008,0x20000001 -.Liplorb: .long 0x0049504c,0x0040ff80 - .long 0x00000000+.Liplccws -.Lschib: .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 -.Liplirb: .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 - .long 0x00000000,0x00000000 + .section .bss + .balign 8 +SYM_DATA_LOCAL(clkcmp, .quad 0x0000000000000000) + .previous |