mirror of https://gitee.com/openkylin/linux.git
72 lines
1.8 KiB
ArmAsm
72 lines
1.8 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 1999, 2010
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*
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* Author(s): Hartmut Penner <hp@de.ibm.com>
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* Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Rob van der Heij <rvdhei@iae.nl>
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* Heiko Carstens <heiko.carstens@de.ibm.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/thread_info.h>
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#include <asm/page.h>
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#include <asm/ptrace.h>
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__HEAD
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ENTRY(startup_continue)
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tm __LC_STFLE_FAC_LIST+5,0x80 # LPP available ?
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jz 0f
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xc __LC_LPP+1(7,0),__LC_LPP+1 # clear lpp and current_pid
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mvi __LC_LPP,0x80 # and set LPP_MAGIC
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.insn s,0xb2800000,__LC_LPP # load program parameter
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0: larl %r1,tod_clock_base
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mvc 0(16,%r1),__LC_BOOT_CLOCK
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larl %r13,.LPG1 # get base
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larl %r0,boot_vdso_data
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stg %r0,__LC_VDSO_PER_CPU
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#
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# Setup stack
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#
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larl %r14,init_task
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stg %r14,__LC_CURRENT
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larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
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#
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# Early setup functions that may not rely on an initialized bss section,
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# like moving the initrd. Returns with an initialized bss section.
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#
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brasl %r14,startup_init_nobss
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#
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# Early machine initialization and detection functions.
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#
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brasl %r14,startup_init
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# check control registers
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stctg %c0,%c15,0(%r15)
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oi 6(%r15),0x60 # enable sigp emergency & external call
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oi 4(%r15),0x10 # switch on low address proctection
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lctlg %c0,%c15,0(%r15)
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lam 0,15,.Laregs-.LPG1(%r13) # load acrs needed by uaccess
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brasl %r14,start_kernel # go to C code
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#
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# We returned from start_kernel ?!? PANIK
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#
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basr %r13,0
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lpswe .Ldw-.(%r13) # load disabled wait psw
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.align 16
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.LPG1:
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.Lpcmsk:.quad 0x0000000180000000
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.L4malign:.quad 0xffffffffffc00000
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.Lscan2g:.quad 0x80000000 + 0x20000 - 8 # 2GB + 128K - 8
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.Lnop: .long 0x07000700
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.Lparmaddr:
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.quad PARMAREA
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.align 64
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.Ldw: .quad 0x0002000180000000,0x0000000000000000
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.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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