diff options
Diffstat (limited to 'arch/s390/kernel/head64.S')
| -rw-r--r-- | arch/s390/kernel/head64.S | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 8366793bc37..9a8263a153c 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -344,10 +344,32 @@ iplstart: bno .Lnoreset la %r2,.Lreset lhi %r3,26 - .long 0x83230008 + diag %r2,%r3,8 + la %r5,.Lirb + stsch 0(%r5) # check if irq is pending + tm 30(%r5),0x0f # by verifying if any of the + bnz .Lwaitforirq # activity or status control + tm 31(%r5),0xff # bits is set in the schib + bz .Lnoreset +.Lwaitforirq: + mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw +.Lwaitrdrirq: + lpsw .Lrdrwaitpsw +.Lrdrint: + c %r1,0xb8 # compare subchannel number + bne .Lwaitrdrirq + la %r5,.Lirb + tsch 0(%r5) .Lnoreset: + b .Lnoload + + .align 8 +.Lrdrnewpsw: + .long 0x00080000,0x80000000+.Lrdrint +.Lrdrwaitpsw: + .long 0x020a0000,0x80000000+.Lrdrint #endif - + # # everything loaded, go for it # @@ -518,9 +540,9 @@ startup:basr %r13,0 # get base l %r2,.Lrcp2-.LPG1(%r13) # try with Read SCP b .Lservicecall-.LPG1(%r13) .Lprocsccb: - lh %r1,.Lscpincr1-PARMAREA(%r4) # use this one if != 0 - chi %r1,0x00 - jne .Lscnd + lghi %r1,0 + icm %r1,3,.Lscpincr1-PARMAREA(%r4) # use this one if != 0 + jnz .Lscnd lg %r1,.Lscpincr2-PARMAREA(%r4) # otherwise use this one .Lscnd: xr %r3,%r3 # same logic @@ -643,10 +665,8 @@ startup:basr %r13,0 # get base # la %r1,0f-.LPG1(%r13) # set program check address stg %r1,__LC_PGM_NEW_PSW+8 - mvc __LC_DIAG44_OPCODE(8),.Lnop-.LPG1(%r13) diag 0,0,0x44 # test diag 0x44 oi 7(%r12),32 # set diag44 flag - mvc __LC_DIAG44_OPCODE(8),.Ldiag44-.LPG1(%r13) 0: # @@ -687,7 +707,6 @@ startup:basr %r13,0 # get base .L4malign:.quad 0xffffffffffc00000 .Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8 .Lnop: .long 0x07000700 -.Ldiag44:.long 0x83000044 .org PARMAREA-64 .Lduct: .long 0,0,0,0,0,0,0,0 @@ -750,7 +769,7 @@ _stext: basr %r13,0 # get base # check control registers stctg %c0,%c15,0(%r15) - oi 6(%r15),0x20 # enable sigp external interrupts + oi 6(%r15),0x40 # enable sigp emergency signal oi 4(%r15),0x10 # switch on low address proctection lctlg %c0,%c15,0(%r15) |