| /* |
| * 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/sigp.h> |
| |
| # |
| # store_status |
| # |
| # Prerequisites to run this function: |
| # - Prefix register is set to zero |
| # - Original prefix register is stored in "dump_prefix_page" |
| # - Lowcore protection is off |
| # |
| ENTRY(store_status) |
| /* Save register one and load save area base */ |
| stg %r1,__LC_SAVE_AREA_RESTART |
| lghi %r1,SAVE_AREA_BASE |
| /* General purpose registers */ |
| stmg %r0,%r15,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| lg %r2,__LC_SAVE_AREA_RESTART |
| stg %r2,__LC_GPREGS_SAVE_AREA-SAVE_AREA_BASE+8(%r1) |
| /* Control registers */ |
| stctg %c0,%c15,__LC_CREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| /* Access registers */ |
| stam %a0,%a15,__LC_AREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| /* Floating point registers */ |
| std %f0, 0x00 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f1, 0x08 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f2, 0x10 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f3, 0x18 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f4, 0x20 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f5, 0x28 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f6, 0x30 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f7, 0x38 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f8, 0x40 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f9, 0x48 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f10,0x50 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f11,0x58 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f12,0x60 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f13,0x68 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f14,0x70 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| std %f15,0x78 + __LC_FPREGS_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| /* Floating point control register */ |
| stfpc __LC_FP_CREG_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| /* CPU timer */ |
| stpt __LC_CPU_TIMER_SAVE_AREA-SAVE_AREA_BASE(%r1) |
| /* Saved prefix register */ |
| larl %r2,dump_prefix_page |
| mvc __LC_PREFIX_SAVE_AREA-SAVE_AREA_BASE(4,%r1),0(%r2) |
| /* Clock comparator - seven bytes */ |
| larl %r2,.Lclkcmp |
| stckc 0(%r2) |
| mvc __LC_CLOCK_COMP_SAVE_AREA-SAVE_AREA_BASE + 1(7,%r1),1(%r2) |
| /* Program status word */ |
| epsw %r2,%r3 |
| st %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 0(%r1) |
| st %r3,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 4(%r1) |
| larl %r2,store_status |
| stg %r2,__LC_PSW_SAVE_AREA-SAVE_AREA_BASE + 8(%r1) |
| br %r14 |
| |
| .section .bss |
| .align 8 |
| .Lclkcmp: .quad 0x0000000000000000 |
| .previous |
| |
| # |
| # do_reipl_asm |
| # Parameter: r2 = schid of reipl device |
| # |
| |
| ENTRY(do_reipl_asm) |
| basr %r13,0 |
| .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) |
| .Lpg1: brasl %r14,store_status |
| |
| lctlg %c6,%c6,.Lall-.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: st %r1,__LC_SUBCHANNEL_ID |
| lhi %r1,0 # mode 0 = esa |
| slr %r0,%r0 # set cpuid to zero |
| sigp %r1,%r0,SIGP_SET_ARCHITECTURE # 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 |
| .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 |
| * omitted 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 |
