diff options
Diffstat (limited to 'arch/s390/kernel/head.S')
| -rw-r--r-- | arch/s390/kernel/head.S | 69 |
1 files changed, 6 insertions, 63 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index adad8863ee2..0f1db268a8a 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -272,7 +272,7 @@ iplstart: # load parameter file from ipl device # .Lagain1: - l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # ramdisk loc. is temp + l %r2,.Linitrd # ramdisk loc. is temp bas %r14,.Lloader # load parameter file ltr %r2,%r2 # got anything ? bz .Lnopf @@ -280,7 +280,7 @@ iplstart: bnh .Lnotrunc la %r2,895 .Lnotrunc: - l %r4,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) + l %r4,.Linitrd clc 0(3,%r4),.L_hdr # if it is HDRx bz .Lagain1 # skip dataset header clc 0(3,%r4),.L_eof # if it is EOFx @@ -323,14 +323,15 @@ iplstart: # load ramdisk from ipl device # .Lagain2: - l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # addr of ramdisk + l %r2,.Linitrd # addr of ramdisk + st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) bas %r14,.Lloader # load ramdisk st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of ramdisk ltr %r2,%r2 bnz .Lrdcont st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found .Lrdcont: - l %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) + l %r2,.Linitrd clc 0(3,%r2),.L_hdr # skip HDRx and EOFx bz .Lagain2 @@ -379,6 +380,7 @@ iplstart: l %r1,.Lstartup br %r1 +.Linitrd:.long _end + 0x400000 # default address of initrd .Lparm: .long PARMAREA .Lstartup: .long startup .Lcvtab:.long _ebcasc # ebcdic to ascii table @@ -479,65 +481,6 @@ start: .byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7 .byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff -.macro GET_IPL_DEVICE -.Lget_ipl_device: - l %r1,0xb8 # get sid - sll %r1,15 # test if subchannel is enabled - srl %r1,31 - ltr %r1,%r1 - bz 2f-.LPG1(%r13) # subchannel disabled - l %r1,0xb8 - la %r5,.Lipl_schib-.LPG1(%r13) - stsch 0(%r5) # get schib of subchannel - bnz 2f-.LPG1(%r13) # schib not available - tm 5(%r5),0x01 # devno valid? - bno 2f-.LPG1(%r13) - la %r6,ipl_parameter_flags-.LPG1(%r13) - oi 3(%r6),0x01 # set flag - la %r2,ipl_devno-.LPG1(%r13) - mvc 0(2,%r2),6(%r5) # store devno - tm 4(%r5),0x80 # qdio capable device? - bno 2f-.LPG1(%r13) - oi 3(%r6),0x02 # set flag - - # copy ipl parameters - - lhi %r0,4096 - l %r2,20(%r0) # get address of parameter list - lhi %r3,IPL_PARMBLOCK_ORIGIN - st %r3,20(%r0) - lhi %r4,1 - cr %r2,%r3 # start parameters < destination ? - jl 0f - lhi %r1,1 # copy direction is upwards - j 1f -0: lhi %r1,-1 # copy direction is downwards - ar %r2,%r0 - ar %r3,%r0 - ar %r2,%r1 - ar %r3,%r1 -1: mvc 0(1,%r3),0(%r2) # finally copy ipl parameters - ar %r3,%r1 - ar %r2,%r1 - sr %r0,%r4 - jne 1b - b 2f-.LPG1(%r13) - - .align 4 -.Lipl_schib: - .rept 13 - .long 0 - .endr - - .globl ipl_parameter_flags -ipl_parameter_flags: - .long 0 - .globl ipl_devno -ipl_devno: - .word 0 -2: -.endm - #ifdef CONFIG_64BIT #include "head64.S" #else |