projects / mirror_ubuntu-eoan-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 | 2 | /* |
| a53c8fab | 3 | * Copyright IBM Corp. 1999, 2010 |
| 0ad775db HC |
4 | * |
| 5 | * Author(s): Hartmut Penner <hp@de.ibm.com> | |
| 6 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| 7 | * Rob van der Heij <rvdhei@iae.nl> | |
| 8 | * Heiko Carstens <heiko.carstens@de.ibm.com> | |
| 1da177e4 | 9 | * |
| 1da177e4 LT |
10 | */ |
| 11 | ||
| 1844c9bc | 12 | #include <linux/init.h> |
| 144d634a | 13 | #include <linux/linkage.h> |
| 1844c9bc MS |
14 | #include <asm/asm-offsets.h> |
| 15 | #include <asm/thread_info.h> | |
| 16 | #include <asm/page.h> | |
| 4e62d458 | 17 | #include <asm/ptrace.h> |
| b1b70306 | 18 | |
| 1844c9bc | 19 | __HEAD |
| 144d634a | 20 | ENTRY(startup_continue) |
| 7a76aa95 | 21 | tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ? |
| e22cf8ca CB |
22 | jz 0f |
| 23 | xc __LC_LPP+1(7,0),__LC_LPP+1 # clear lpp and current_pid | |
| 24 | mvi __LC_LPP,0x80 # and set LPP_MAGIC | |
| 25 | .insn s,0xb2800000,__LC_LPP # load program parameter | |
| 6e2ef5e4 MS |
26 | 0: larl %r1,tod_clock_base |
| 27 | mvc 0(16,%r1),__LC_BOOT_CLOCK | |
| 1844c9bc | 28 | larl %r13,.LPG1 # get base |
| 25d83cbf | 29 | lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers |
| 0aaba41b | 30 | larl %r0,boot_vdso_data |
| c742b31c | 31 | stg %r0,__LC_VDSO_PER_CPU |
| e87bfe51 HC |
32 | # |
| 33 | # Setup stack | |
| 34 | # | |
| d5c352cd | 35 | larl %r14,init_task |
| 25d83cbf | 36 | stg %r14,__LC_CURRENT |
| ce3dc447 | 37 | larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD |
| 1da177e4 | 38 | # |
| 971a9ca6 HC |
39 | # Early setup functions that may not rely on an initialized bss section, |
| 40 | # like moving the initrd. Returns with an initialized bss section. | |
| 41 | # | |
| 42 | brasl %r14,startup_init_nobss | |
| 43 | # | |
| 44 | # Early machine initialization and detection functions. | |
| 1da177e4 | 45 | # |
| fe355b7f | 46 | brasl %r14,startup_init |
| c9497864 VG |
47 | |
| 48 | # check control registers | |
| 49 | stctg %c0,%c15,0(%r15) | |
| 50 | oi 6(%r15),0x60 # enable sigp emergency & external call | |
| 51 | oi 4(%r15),0x10 # switch on low address proctection | |
| 52 | lctlg %c0,%c15,0(%r15) | |
| 53 | ||
| 54 | lam 0,15,.Laregs-.LPG1(%r13) # load acrs needed by uaccess | |
| 55 | brasl %r14,start_kernel # go to C code | |
| 56 | # | |
| 57 | # We returned from start_kernel ?!? PANIK | |
| 58 | # | |
| 59 | basr %r13,0 | |
| 60 | lpswe .Ldw-.(%r13) # load disabled wait psw | |
| 61 | ||
| 25d83cbf | 62 | .align 16 |
| 1844c9bc | 63 | .LPG1: |
| c76e70d3 | 64 | .Lctl: .quad 0x04040000 # cr0: AFP registers & secondary space |
| 25d83cbf HC |
65 | .quad 0 # cr1: primary space segment table |
| 66 | .quad .Lduct # cr2: dispatchable unit control table | |
| 67 | .quad 0 # cr3: instruction authorization | |
| df26c2e8 | 68 | .quad 0xffff # cr4: instruction authorization |
| 482b05dd | 69 | .quad .Lduct # cr5: primary-aste origin |
| 25d83cbf HC |
70 | .quad 0 # cr6: I/O interrupts |
| 71 | .quad 0 # cr7: secondary space segment table | |
| 72 | .quad 0 # cr8: access registers translation | |
| 73 | .quad 0 # cr9: tracing off | |
| 74 | .quad 0 # cr10: tracing off | |
| 75 | .quad 0 # cr11: tracing off | |
| 76 | .quad 0 # cr12: tracing off | |
| 77 | .quad 0 # cr13: home space segment table | |
| 78 | .quad 0xc0000000 # cr14: machine check handling off | |
| 8d7f6690 | 79 | .quad .Llinkage_stack # cr15: linkage stack operations |
| 25d83cbf | 80 | .Lpcmsk:.quad 0x0000000180000000 |
| 1da177e4 | 81 | .L4malign:.quad 0xffffffffffc00000 |
| 25d83cbf HC |
82 | .Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8 |
| 83 | .Lnop: .long 0x07000700 | |
| b1b70306 HC |
84 | .Lparmaddr: |
| 85 | .quad PARMAREA | |
| 482b05dd | 86 | .align 64 |
| 8d7f6690 | 87 | .Lduct: .long 0,.Laste,.Laste,0,.Lduald,0,0,0 |
| 482b05dd | 88 | .long 0,0,0,0,0,0,0,0 |
| 8d7f6690 | 89 | .Laste: .quad 0,0xffffffffffffffff,0,0,0,0,0,0 |
| 482b05dd GS |
90 | .align 128 |
| 91 | .Lduald:.rept 8 | |
| 92 | .long 0x80000000,0,0,0 # invalid access-list entries | |
| 93 | .endr | |
| 8d7f6690 MS |
94 | .Llinkage_stack: |
| 95 | .long 0,0,0x89000000,0,0,0,0x8a000000,0 | |
| 25d83cbf HC |
96 | .Ldw: .quad 0x0002000180000000,0x0000000000000000 |
| 97 | .Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |