| /* |
| * arch/s390/kernel/reipl.S |
| * |
| * S390 version |
| * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com) |
| Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) |
| */ |
| |
| #include <asm/lowcore.h> |
| .globl do_reipl |
| do_reipl: basr %r13,0 |
| .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) |
| .Lpg1: lctlg %c6,%c6,.Lall-.Lpg0(%r13) |
| stctg %c0,%c0,.Lctlsave-.Lpg0(%r13) |
| ni .Lctlsave+4-.Lpg0(%r13),0xef |
| lctlg %c0,%c0,.Lctlsave-.Lpg0(%r13) |
| lgr %r1,%r2 |
| mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13) |
| stsch .Lschib-.Lpg0(%r13) |
| oi .Lschib+5-.Lpg0(%r13),0x84 |
| .Lecs: xi .Lschib+27-.Lpg0(%r13),0x01 |
| msch .Lschib-.Lpg0(%r13) |
| lghi %r0,5 |
| .Lssch: ssch .Liplorb-.Lpg0(%r13) |
| jz .L001 |
| brct %r0,.Lssch |
| bas %r14,.Ldisab-.Lpg0(%r13) |
| .L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13) |
| .Ltpi: lpswe .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: spx .Lnull-.Lpg0(%r13) |
| st %r1,__LC_SUBCHANNEL_ID |
| lhi %r1,0 # mode 0 = esa |
| slr %r0,%r0 # set cpuid to zero |
| sigp %r1,%r0,0x12 # switch to esa mode |
| lpsw 0 |
| .Ldisab: sll %r14,1 |
| srl %r14,1 # need to kill hi bit to avoid specification exceptions. |
| st %r14,.Ldispsw+12-.Lpg0(%r13) |
| lpswe .Ldispsw-.Lpg0(%r13) |
| .align 8 |
| .Lall: .quad 0x00000000ff000000 |
| .Lctlsave: .quad 0x0000000000000000 |
| .Lnull: .long 0x0000000000000000 |
| .align 16 |
| /* |
| * These addresses have to be 31 bit otherwise |
| * the sigp will throw a specifcation exception |
| * when switching to ESA mode as bit 31 be set |
| * in the ESA psw. |
| * Bit 31 of the addresses has to be 0 for the |
| * 31bit lpswe instruction a fact they appear to have |
| * ommited from the pop. |
| */ |
| .Lnewpsw: .quad 0x0000000080000000 |
| .quad .Lpg1 |
| .Lpcnew: .quad 0x0000000080000000 |
| .quad .Lecs |
| .Lionew: .quad 0x0000000080000000 |
| .quad .Lcont |
| .Lwaitpsw: .quad 0x0202000080000000 |
| .quad .Ltpi |
| .Ldispsw: .quad 0x0002000080000000 |
| .quad 0x0000000000000000 |
| .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 |
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