diff options
Diffstat (limited to 'arch/s390/kernel/relocate_kernel.S')
| -rw-r--r-- | arch/s390/kernel/relocate_kernel.S | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/arch/s390/kernel/relocate_kernel.S b/arch/s390/kernel/relocate_kernel.S index d5e4a62fbb79..2a25ec7147ff 100644 --- a/arch/s390/kernel/relocate_kernel.S +++ b/arch/s390/kernel/relocate_kernel.S | |||
| @@ -4,6 +4,7 @@ | |||
| 4 | * (C) Copyright IBM Corp. 2005 | 4 | * (C) Copyright IBM Corp. 2005 |
| 5 | * | 5 | * |
| 6 | * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> | 6 | * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> |
| 7 | * Heiko Carstens <heiko.carstens@de.ibm.com> | ||
| 7 | * | 8 | * |
| 8 | */ | 9 | */ |
| 9 | 10 | ||
| @@ -25,8 +26,31 @@ | |||
| 25 | relocate_kernel: | 26 | relocate_kernel: |
| 26 | basr %r13,0 #base address | 27 | basr %r13,0 #base address |
| 27 | .base: | 28 | .base: |
| 28 | spx zero64-.base(%r13) #absolute addressing mode | ||
| 29 | stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQ (external) | 29 | stnsm sys_msk-.base(%r13),0xf8 #disable DAT and IRQ (external) |
| 30 | spx zero64-.base(%r13) #absolute addressing mode | ||
| 31 | stctl %c0,%c15,ctlregs-.base(%r13) | ||
| 32 | stm %r0,%r15,gprregs-.base(%r13) | ||
| 33 | la %r1,load_psw-.base(%r13) | ||
| 34 | mvc 0(8,%r0),0(%r1) | ||
| 35 | la %r0,.back-.base(%r13) | ||
| 36 | st %r0,4(%r0) | ||
| 37 | oi 4(%r0),0x80 | ||
| 38 | mvc 0x68(8,%r0),0(%r1) | ||
| 39 | la %r0,.back_pgm-.base(%r13) | ||
| 40 | st %r0,0x6c(%r0) | ||
| 41 | oi 0x6c(%r0),0x80 | ||
| 42 | lhi %r0,0 | ||
| 43 | diag %r0,%r0,0x308 | ||
| 44 | .back: | ||
| 45 | basr %r13,0 | ||
| 46 | .back_base: | ||
| 47 | oi have_diag308-.back_base(%r13),0x01 | ||
| 48 | lctl %c0,%c15,ctlregs-.back_base(%r13) | ||
| 49 | lm %r0,%r15,gprregs-.back_base(%r13) | ||
| 50 | j .start_reloc | ||
| 51 | .back_pgm: | ||
| 52 | lm %r0,%r15,gprregs-.base(%r13) | ||
| 53 | .start_reloc: | ||
| 30 | lhi %r10,-1 #preparing the mask | 54 | lhi %r10,-1 #preparing the mask |
| 31 | sll %r10,12 #shift it such that it becomes 0xf000 | 55 | sll %r10,12 #shift it such that it becomes 0xf000 |
| 32 | .top: | 56 | .top: |
| @@ -63,6 +87,10 @@ | |||
| 63 | o %r3,4(%r4) #or load address into psw | 87 | o %r3,4(%r4) #or load address into psw |
| 64 | st %r3,4(%r4) | 88 | st %r3,4(%r4) |
| 65 | mvc 0(8,%r0),0(%r4) #copy psw to absolute address 0 | 89 | mvc 0(8,%r0),0(%r4) #copy psw to absolute address 0 |
| 90 | tm have_diag308-.base(%r13),0x01 | ||
| 91 | jno .no_diag308 | ||
| 92 | diag %r0,%r0,0x308 | ||
| 93 | .no_diag308: | ||
| 66 | sr %r1,%r1 #clear %r1 | 94 | sr %r1,%r1 #clear %r1 |
| 67 | sr %r2,%r2 #clear %r2 | 95 | sr %r2,%r2 #clear %r2 |
| 68 | sigp %r1,%r2,0x12 #set cpuid to zero | 96 | sigp %r1,%r2,0x12 #set cpuid to zero |
| @@ -75,6 +103,17 @@ | |||
| 75 | .long 0x00080000,0x80000000 | 103 | .long 0x00080000,0x80000000 |
| 76 | sys_msk: | 104 | sys_msk: |
| 77 | .quad 0 | 105 | .quad 0 |
| 106 | ctlregs: | ||
| 107 | .rept 16 | ||
| 108 | .long 0 | ||
| 109 | .endr | ||
| 110 | gprregs: | ||
| 111 | .rept 16 | ||
| 112 | .long 0 | ||
| 113 | .endr | ||
| 114 | have_diag308: | ||
| 115 | .byte 0 | ||
| 116 | .align 8 | ||
| 78 | relocate_kernel_end: | 117 | relocate_kernel_end: |
| 79 | .globl relocate_kernel_len | 118 | .globl relocate_kernel_len |
| 80 | relocate_kernel_len: | 119 | relocate_kernel_len: |