diff options
Diffstat (limited to 'arch/s390/kernel/relocate_kernel64.S')
| -rw-r--r-- | arch/s390/kernel/relocate_kernel64.S | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/arch/s390/kernel/relocate_kernel64.S b/arch/s390/kernel/relocate_kernel64.S deleted file mode 100644 index cfac28330b03..000000000000 --- a/arch/s390/kernel/relocate_kernel64.S +++ /dev/null | |||
| @@ -1,121 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * Copyright IBM Corp. 2005 | ||
| 3 | * | ||
| 4 | * Author(s): Rolf Adelsberger, | ||
| 5 | * Heiko Carstens <heiko.carstens@de.ibm.com> | ||
| 6 | * | ||
| 7 | */ | ||
| 8 | |||
| 9 | #include <linux/linkage.h> | ||
| 10 | #include <asm/sigp.h> | ||
| 11 | |||
| 12 | /* | ||
| 13 | * moves the new kernel to its destination... | ||
| 14 | * %r2 = pointer to first kimage_entry_t | ||
| 15 | * %r3 = start address - where to jump to after the job is done... | ||
| 16 | * | ||
| 17 | * %r5 will be used as temp. storage | ||
| 18 | * %r6 holds the destination address | ||
| 19 | * %r7 = PAGE_SIZE | ||
| 20 | * %r8 holds the source address | ||
| 21 | * %r9 = PAGE_SIZE | ||
| 22 | * | ||
| 23 | * 0xf000 is a page_mask | ||
| 24 | */ | ||
| 25 | |||
| 26 | .text | ||
| 27 | ENTRY(relocate_kernel) | ||
| 28 | basr %r13,0 # base address | ||
| 29 | .base: | ||
| 30 | stnsm sys_msk-.base(%r13),0xfb # disable DAT | ||
| 31 | stctg %c0,%c15,ctlregs-.base(%r13) | ||
| 32 | stmg %r0,%r15,gprregs-.base(%r13) | ||
| 33 | lghi %r0,3 | ||
| 34 | sllg %r0,%r0,31 | ||
| 35 | stg %r0,0x1d0(%r0) | ||
| 36 | la %r0,.back_pgm-.base(%r13) | ||
| 37 | stg %r0,0x1d8(%r0) | ||
| 38 | la %r1,load_psw-.base(%r13) | ||
| 39 | mvc 0(8,%r0),0(%r1) | ||
| 40 | la %r0,.back-.base(%r13) | ||
| 41 | st %r0,4(%r0) | ||
| 42 | oi 4(%r0),0x80 | ||
| 43 | lghi %r0,0 | ||
| 44 | diag %r0,%r0,0x308 | ||
| 45 | .back: | ||
| 46 | lhi %r1,1 # mode 1 = esame | ||
| 47 | sigp %r1,%r0,SIGP_SET_ARCHITECTURE # switch to esame mode | ||
| 48 | sam64 # switch to 64 bit addressing mode | ||
| 49 | basr %r13,0 | ||
| 50 | .back_base: | ||
| 51 | oi have_diag308-.back_base(%r13),0x01 | ||
| 52 | lctlg %c0,%c15,ctlregs-.back_base(%r13) | ||
| 53 | lmg %r0,%r15,gprregs-.back_base(%r13) | ||
| 54 | j .top | ||
| 55 | .back_pgm: | ||
| 56 | lmg %r0,%r15,gprregs-.base(%r13) | ||
| 57 | .top: | ||
| 58 | lghi %r7,4096 # load PAGE_SIZE in r7 | ||
| 59 | lghi %r9,4096 # load PAGE_SIZE in r9 | ||
| 60 | lg %r5,0(%r2) # read another word for indirection page | ||
| 61 | aghi %r2,8 # increment pointer | ||
| 62 | tml %r5,0x1 # is it a destination page? | ||
| 63 | je .indir_check # NO, goto "indir_check" | ||
| 64 | lgr %r6,%r5 # r6 = r5 | ||
| 65 | nill %r6,0xf000 # mask it out and... | ||
| 66 | j .top # ...next iteration | ||
| 67 | .indir_check: | ||
| 68 | tml %r5,0x2 # is it a indirection page? | ||
| 69 | je .done_test # NO, goto "done_test" | ||
| 70 | nill %r5,0xf000 # YES, mask out, | ||
| 71 | lgr %r2,%r5 # move it into the right register, | ||
| 72 | j .top # and read next... | ||
| 73 | .done_test: | ||
| 74 | tml %r5,0x4 # is it the done indicator? | ||
| 75 | je .source_test # NO! Well, then it should be the source indicator... | ||
| 76 | j .done # ok, lets finish it here... | ||
| 77 | .source_test: | ||
| 78 | tml %r5,0x8 # it should be a source indicator... | ||
| 79 | je .top # NO, ignore it... | ||
| 80 | lgr %r8,%r5 # r8 = r5 | ||
| 81 | nill %r8,0xf000 # masking | ||
| 82 | 0: mvcle %r6,%r8,0x0 # copy PAGE_SIZE bytes from r8 to r6 - pad with 0 | ||
| 83 | jo 0b | ||
| 84 | j .top | ||
| 85 | .done: | ||
| 86 | sgr %r0,%r0 # clear register r0 | ||
| 87 | la %r4,load_psw-.base(%r13) # load psw-address into the register | ||
| 88 | o %r3,4(%r4) # or load address into psw | ||
| 89 | st %r3,4(%r4) | ||
| 90 | mvc 0(8,%r0),0(%r4) # copy psw to absolute address 0 | ||
| 91 | tm have_diag308-.base(%r13),0x01 | ||
| 92 | jno .no_diag308 | ||
| 93 | diag %r0,%r0,0x308 | ||
| 94 | .no_diag308: | ||
| 95 | sam31 # 31 bit mode | ||
| 96 | sr %r1,%r1 # erase register r1 | ||
| 97 | sr %r2,%r2 # erase register r2 | ||
| 98 | sigp %r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero | ||
| 99 | lpsw 0 # hopefully start new kernel... | ||
| 100 | |||
| 101 | .align 8 | ||
| 102 | load_psw: | ||
| 103 | .long 0x00080000,0x80000000 | ||
| 104 | sys_msk: | ||
| 105 | .quad 0 | ||
| 106 | ctlregs: | ||
| 107 | .rept 16 | ||
| 108 | .quad 0 | ||
| 109 | .endr | ||
| 110 | gprregs: | ||
| 111 | .rept 16 | ||
| 112 | .quad 0 | ||
| 113 | .endr | ||
| 114 | have_diag308: | ||
| 115 | .byte 0 | ||
| 116 | .align 8 | ||
| 117 | relocate_kernel_end: | ||
| 118 | .align 8 | ||
| 119 | .globl relocate_kernel_len | ||
| 120 | relocate_kernel_len: | ||
| 121 | .quad relocate_kernel_end - relocate_kernel | ||