diff options
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r-- | arch/s390/kernel/head.S | 22 | ||||
-rw-r--r-- | arch/s390/kernel/head31.S | 77 | ||||
-rw-r--r-- | arch/s390/kernel/head64.S | 79 |
3 files changed, 88 insertions, 90 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index ea88d06..538c82d 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -1,7 +1,7 @@ /* * arch/s390/kernel/head.S * - * (C) Copyright IBM Corp. 1999, 2005 + * Copyright (C) IBM Corp. 1999,2006 * * Author(s): Hartmut Penner <hp@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> @@ -482,24 +482,23 @@ start: .macro GET_IPL_DEVICE .Lget_ipl_device: - basr %r12,0 -.LGID: l %r1,0xb8 # get sid + l %r1,0xb8 # get sid sll %r1,15 # test if subchannel is enabled srl %r1,31 ltr %r1,%r1 - bz 0(%r14) # subchannel disabled + bz 2f-.LPG1(%r13) # subchannel disabled l %r1,0xb8 - la %r5,.Lipl_schib-.LGID(%r12) + la %r5,.Lipl_schib-.LPG1(%r13) stsch 0(%r5) # get schib of subchannel - bnz 0(%r14) # schib not available + bnz 2f-.LPG1(%r13) # schib not available tm 5(%r5),0x01 # devno valid? - bno 0(%r14) - la %r6,ipl_parameter_flags-.LGID(%r12) + bno 2f-.LPG1(%r13) + la %r6,ipl_parameter_flags-.LPG1(%r13) oi 3(%r6),0x01 # set flag - la %r2,ipl_devno-.LGID(%r12) + la %r2,ipl_devno-.LPG1(%r13) mvc 0(2,%r2),6(%r5) # store devno tm 4(%r5),0x80 # qdio capable device? - bno 0(%r14) + bno 2f-.LPG1(%r13) oi 3(%r6),0x02 # set flag # copy ipl parameters @@ -523,7 +522,7 @@ start: ar %r2,%r1 sr %r0,%r4 jne 1b - b 0(%r14) + b 2f-.LPG1(%r13) .align 4 .Lipl_schib: @@ -537,6 +536,7 @@ ipl_parameter_flags: .globl ipl_devno ipl_devno: .word 0 +2: .endm #ifdef CONFIG_64BIT diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index 8f38bfd6..d00de17 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -1,7 +1,7 @@ /* * arch/s390/kernel/head31.S * - * (C) Copyright IBM Corp. 2005 + * Copyright (C) IBM Corp. 2005,2006 * * Author(s): Hartmut Penner <hp@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> @@ -16,12 +16,31 @@ # or linload or SALIPL # .org 0x10000 -startup:basr %r13,0 # get base -.LPG1: l %r1, .Lget_ipl_device_addr-.LPG1(%r13) - basr %r14, %r1 +startup:basr %r13,0 # get base +.LPG0: l %r13,0f-.LPG0(%r13) + b 0(%r13) +0: .long startup_continue + +# +# params at 10400 (setup.h) +# + .org PARMAREA + .long 0,0 # IPL_DEVICE + .long 0,RAMDISK_ORIGIN # INITRD_START + .long 0,RAMDISK_SIZE # INITRD_SIZE + + .org COMMAND_LINE + .byte "root=/dev/ram0 ro" + .byte 0 + + .org 0x11000 + +startup_continue: + basr %r13,0 # get base +.LPG1: GET_IPL_DEVICE lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers - la %r12,_pstart-.LPG1(%r13) # pointer to parameter area - # move IPL device to lowcore + l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area + # move IPL device to lowcore mvc __LC_IPLDEV(4),IPL_DEVICE-PARMAREA(%r12) # @@ -51,8 +70,8 @@ startup:basr %r13,0 # get base a %r1,__LC_EXT_NEW_PSW+4 # set handler st %r1,__LC_EXT_NEW_PSW+4 - la %r4,_pstart-.LPG1(%r13) # %r4 is our index for sccb stuff - la %r1, .Lsccb-PARMAREA(%r4) # our sccb + l %r4,.Lsccbaddr-.LPG1(%r13) # %r4 is our index for sccb stuff + lr %r1,%r4 # our sccb .insn rre,0xb2200000,%r2,%r1 # service call ipm %r1 srl %r1,28 # get cc code @@ -63,7 +82,7 @@ startup:basr %r13,0 # get base be .Lservicecall-.LPG1(%r13) lpsw .Lwaitsclp-.LPG1(%r13) .Lsclph: - lh %r1,.Lsccbr-PARMAREA(%r4) + lh %r1,.Lsccbr-.Lsccb(%r4) chi %r1,0x10 # 0x0010 is the sucess code je .Lprocsccb # let's process the sccb chi %r1,0x1f0 @@ -74,7 +93,7 @@ startup:basr %r13,0 # get base b .Lservicecall-.LPG1(%r13) .Lprocsccb: lhi %r1,0 - icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0 + icm %r1,3,.Lscpincr1-.Lsccb(%r4) # use this one if != 0 jnz .Lscnd lhi %r1,0x800 # otherwise report 2GB .Lscnd: @@ -84,10 +103,10 @@ startup:basr %r13,0 # get base lr %r1,%r3 .Lno2gb: xr %r3,%r3 # same logic - ic %r3,.Lscpa1-PARMAREA(%r4) + ic %r3,.Lscpa1-.Lsccb(%r4) chi %r3,0x00 jne .Lcompmem - l %r3,.Lscpa2-PARMAREA(%r4) + l %r3,.Lscpa2-.Lsccb(%r4) .Lcompmem: mr %r2,%r1 # mem in MB on 128-bit l %r1,.Lonemb-.LPG1(%r13) @@ -95,8 +114,6 @@ startup:basr %r13,0 # get base b .Lfchunk-.LPG1(%r13) .align 4 -.Lget_ipl_device_addr: - .long .Lget_ipl_device .Lpmask: .byte 0 .align 8 @@ -242,6 +259,8 @@ startup:basr %r13,0 # get base .long 0 # cr13: home space segment table .long 0xc0000000 # cr14: machine check handling off .long 0 # cr15: linkage stack operations +.Lduct: .long 0,0,0,0,0,0,0,0 + .long 0,0,0,0,0,0,0,0 .Lpcmem:.long 0x00080000,0x80000000 + .Lchkmem .Lpcfpu:.long 0x00080000,0x80000000 + .Lchkfpu .Lpccsp:.long 0x00080000,0x80000000 + .Lchkcsp @@ -252,25 +271,9 @@ startup:basr %r13,0 # get base .Lmflags:.long machine_flags .Lbss_bgn: .long __bss_start .Lbss_end: .long _end - - .org PARMAREA-64 -.Lduct: .long 0,0,0,0,0,0,0,0 - .long 0,0,0,0,0,0,0,0 - -# -# params at 10400 (setup.h) -# - .org PARMAREA - .global _pstart -_pstart: - .long 0,0 # IPL_DEVICE - .long 0,RAMDISK_ORIGIN # INITRD_START - .long 0,RAMDISK_SIZE # INITRD_SIZE - - .org COMMAND_LINE - .byte "root=/dev/ram0 ro" - .byte 0 - .org 0x11000 +.Lparmaddr: .long PARMAREA +.Lsccbaddr: .long .Lsccb + .align 4096 .Lsccb: .hword 0x1000 # length, one page .byte 0x00,0x00,0x00 @@ -287,18 +290,14 @@ _pstart: .Lscpincr2: .quad 0x00 .fill 3984,1,0 - .org 0x12000 - .global _pend -_pend: - - GET_IPL_DEVICE + .align 4096 #ifdef CONFIG_SHARED_KERNEL .org 0x100000 #endif # -# startup-code, running in virtual mode +# startup-code, running in absolute addressing mode # .globl _stext _stext: basr %r13,0 # get base diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index ad5d87f..47744fc 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -1,7 +1,7 @@ /* * arch/s390/kernel/head64.S * - * (C) Copyright IBM Corp. 1999,2005 + * Copyright (C) IBM Corp. 1999,2006 * * Author(s): Hartmut Penner <hp@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> @@ -15,18 +15,37 @@ # this is called either by the ipl loader or directly by PSW restart # or linload or SALIPL # - .org 0x10000 -startup:basr %r13,0 # get base + .org 0x10000 +startup:basr %r13,0 # get base +.LPG0: l %r13,0f-.LPG0(%r13) + b 0(%r13) +0: .long startup_continue + +# +# params at 10400 (setup.h) +# + .org PARMAREA + .quad 0 # IPL_DEVICE + .quad RAMDISK_ORIGIN # INITRD_START + .quad RAMDISK_SIZE # INITRD_SIZE + + .org COMMAND_LINE + .byte "root=/dev/ram0 ro" + .byte 0 + + .org 0x11000 + +startup_continue: + basr %r13,0 # get base .LPG1: sll %r13,1 # remove high order bit srl %r13,1 - l %r1,.Lget_ipl_device_addr-.LPG1(%r13) - basr %r14,%r1 + GET_IPL_DEVICE lhi %r1,1 # mode 1 = esame slr %r0,%r0 # set cpuid to zero sigp %r1,%r0,0x12 # switch to esame mode sam64 # switch to 64 bit mode lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers - larl %r12,_pstart # pointer to parameter area + lg %r12,.Lparmaddr-.LPG1(%r13)# pointer to parameter area # move IPL device to lowcore mvc __LC_IPLDEV(4),IPL_DEVICE+4-PARMAREA(%r12) @@ -55,8 +74,8 @@ startup:basr %r13,0 # get base larl %r1,.Lsclph stg %r1,__LC_EXT_NEW_PSW+8 # set handler - larl %r4,_pstart # %r4 is our index for sccb stuff - la %r1,.Lsccb-PARMAREA(%r4) # our sccb + larl %r4,.Lsccb # %r4 is our index for sccb stuff + lgr %r1,%r4 # our sccb .insn rre,0xb2200000,%r2,%r1 # service call ipm %r1 srl %r1,28 # get cc code @@ -67,7 +86,7 @@ startup:basr %r13,0 # get base be .Lservicecall-.LPG1(%r13) lpswe .Lwaitsclp-.LPG1(%r13) .Lsclph: - lh %r1,.Lsccbr-PARMAREA(%r4) + lh %r1,.Lsccbr-.Lsccb(%r4) chi %r1,0x10 # 0x0010 is the sucess code je .Lprocsccb # let's process the sccb chi %r1,0x1f0 @@ -78,15 +97,15 @@ startup:basr %r13,0 # get base b .Lservicecall-.LPG1(%r13) .Lprocsccb: lghi %r1,0 - icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0 + icm %r1,3,.Lscpincr1-.Lsccb(%r4) # use this one if != 0 jnz .Lscnd - lg %r1,.Lscpincr2-PARMAREA(%r4) # otherwise use this one + lg %r1,.Lscpincr2-.Lsccb(%r4) # otherwise use this one .Lscnd: xr %r3,%r3 # same logic - ic %r3,.Lscpa1-PARMAREA(%r4) + ic %r3,.Lscpa1-.Lsccb(%r4) chi %r3,0x00 jne .Lcompmem - l %r3,.Lscpa2-PARMAREA(%r4) + l %r3,.Lscpa2-.Lsccb(%r4) .Lcompmem: mlgr %r2,%r1 # mem in MB on 128-bit l %r1,.Lonemb-.LPG1(%r13) @@ -94,8 +113,6 @@ startup:basr %r13,0 # get base b .Lfchunk-.LPG1(%r13) .align 4 -.Lget_ipl_device_addr: - .long .Lget_ipl_device .Lpmask: .byte 0 .align 8 @@ -242,29 +259,16 @@ startup:basr %r13,0 # get base .quad 0 # cr13: home space segment table .quad 0xc0000000 # cr14: machine check handling off .quad 0 # cr15: linkage stack operations +.Lduct: .long 0,0,0,0,0,0,0,0 + .long 0,0,0,0,0,0,0,0 .Lpcmsk:.quad 0x0000000180000000 .L4malign:.quad 0xffffffffffc00000 .Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8 .Lnop: .long 0x07000700 +.Lparmaddr: + .quad PARMAREA - .org PARMAREA-64 -.Lduct: .long 0,0,0,0,0,0,0,0 - .long 0,0,0,0,0,0,0,0 - -# -# params at 10400 (setup.h) -# - .org PARMAREA - .global _pstart -_pstart: - .quad 0 # IPL_DEVICE - .quad RAMDISK_ORIGIN # INITRD_START - .quad RAMDISK_SIZE # INITRD_SIZE - - .org COMMAND_LINE - .byte "root=/dev/ram0 ro" - .byte 0 - .org 0x11000 + .align 4096 .Lsccb: .hword 0x1000 # length, one page .byte 0x00,0x00,0x00 @@ -281,18 +285,14 @@ _pstart: .Lscpincr2: .quad 0x00 .fill 3984,1,0 - .org 0x12000 - .global _pend -_pend: - - GET_IPL_DEVICE + .align 4096 #ifdef CONFIG_SHARED_KERNEL .org 0x100000 #endif # -# startup-code, running in virtual mode +# startup-code, running in absolute addressing mode # .globl _stext _stext: basr %r13,0 # get base @@ -326,4 +326,3 @@ _stext: basr %r13,0 # get base .align 8 .Ldw: .quad 0x0002000180000000,0x0000000000000000 .Laregs: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 - 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