| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * arch/s390/kernel/reipl.S |
| 3 | * |
| 4 | * S390 version |
| 5 | * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 6 | * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com) |
| 7 | Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) |
| 8 | */ |
| 9 | |
| 10 | #include <asm/lowcore.h> |
| 11 | .globl do_reipl |
| 12 | do_reipl: basr %r13,0 |
| 13 | .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) |
| 14 | .Lpg1: lctlg %c6,%c6,.Lall-.Lpg0(%r13) |
| 15 | stctg %c0,%c0,.Lctlsave-.Lpg0(%r13) |
| 16 | ni .Lctlsave+4-.Lpg0(%r13),0xef |
| 17 | lctlg %c0,%c0,.Lctlsave-.Lpg0(%r13) |
| 18 | lgr %r1,%r2 |
| 19 | mvc __LC_PGM_NEW_PSW(16),.Lpcnew-.Lpg0(%r13) |
| 20 | stsch .Lschib-.Lpg0(%r13) |
| 21 | oi .Lschib+5-.Lpg0(%r13),0x84 |
| 22 | .Lecs: xi .Lschib+27-.Lpg0(%r13),0x01 |
| 23 | msch .Lschib-.Lpg0(%r13) |
| 24 | lghi %r0,5 |
| 25 | .Lssch: ssch .Liplorb-.Lpg0(%r13) |
| 26 | jz .L001 |
| 27 | brct %r0,.Lssch |
| 28 | bas %r14,.Ldisab-.Lpg0(%r13) |
| 29 | .L001: mvc __LC_IO_NEW_PSW(16),.Lionew-.Lpg0(%r13) |
| 30 | .Ltpi: lpswe .Lwaitpsw-.Lpg0(%r13) |
| 31 | .Lcont: c %r1,__LC_SUBCHANNEL_ID |
| 32 | jnz .Ltpi |
| 33 | clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13) |
| 34 | jnz .Ltpi |
| 35 | tsch .Liplirb-.Lpg0(%r13) |
| 36 | tm .Liplirb+9-.Lpg0(%r13),0xbf |
| 37 | jz .L002 |
| 38 | bas %r14,.Ldisab-.Lpg0(%r13) |
| 39 | .L002: tm .Liplirb+8-.Lpg0(%r13),0xf3 |
| 40 | jz .L003 |
| 41 | bas %r14,.Ldisab-.Lpg0(%r13) |
| 42 | .L003: spx .Lnull-.Lpg0(%r13) |
| 43 | st %r1,__LC_SUBCHANNEL_ID |
| 44 | lhi %r1,0 # mode 0 = esa |
| 45 | slr %r0,%r0 # set cpuid to zero |
| 46 | sigp %r1,%r0,0x12 # switch to esa mode |
| 47 | lpsw 0 |
| 48 | .Ldisab: sll %r14,1 |
| 49 | srl %r14,1 # need to kill hi bit to avoid specification exceptions. |
| 50 | st %r14,.Ldispsw+12-.Lpg0(%r13) |
| 51 | lpswe .Ldispsw-.Lpg0(%r13) |
| 52 | .align 8 |
| 53 | .Lall: .quad 0x00000000ff000000 |
| 54 | .Lctlsave: .quad 0x0000000000000000 |
| 55 | .Lnull: .long 0x0000000000000000 |
| 56 | .align 16 |
| 57 | /* |
| 58 | * These addresses have to be 31 bit otherwise |
| 59 | * the sigp will throw a specifcation exception |
| 60 | * when switching to ESA mode as bit 31 be set |
| 61 | * in the ESA psw. |
| 62 | * Bit 31 of the addresses has to be 0 for the |
| 63 | * 31bit lpswe instruction a fact they appear to have |
| 64 | * ommited from the pop. |
| 65 | */ |
| 66 | .Lnewpsw: .quad 0x0000000080000000 |
| 67 | .quad .Lpg1 |
| 68 | .Lpcnew: .quad 0x0000000080000000 |
| 69 | .quad .Lecs |
| 70 | .Lionew: .quad 0x0000000080000000 |
| 71 | .quad .Lcont |
| 72 | .Lwaitpsw: .quad 0x0202000080000000 |
| 73 | .quad .Ltpi |
| 74 | .Ldispsw: .quad 0x0002000080000000 |
| 75 | .quad 0x0000000000000000 |
| 76 | .Liplccws: .long 0x02000000,0x60000018 |
| 77 | .long 0x08000008,0x20000001 |
| 78 | .Liplorb: .long 0x0049504c,0x0040ff80 |
| 79 | .long 0x00000000+.Liplccws |
| 80 | .Lschib: .long 0x00000000,0x00000000 |
| 81 | .long 0x00000000,0x00000000 |
| 82 | .long 0x00000000,0x00000000 |
| 83 | .long 0x00000000,0x00000000 |
| 84 | .long 0x00000000,0x00000000 |
| 85 | .long 0x00000000,0x00000000 |
| 86 | .Liplirb: .long 0x00000000,0x00000000 |
| 87 | .long 0x00000000,0x00000000 |
| 88 | .long 0x00000000,0x00000000 |
| 89 | .long 0x00000000,0x00000000 |
| 90 | .long 0x00000000,0x00000000 |
| 91 | .long 0x00000000,0x00000000 |
| 92 | .long 0x00000000,0x00000000 |
| 93 | .long 0x00000000,0x00000000 |
| 94 | |
| 95 | |
| 96 | |