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Viewing changes to arch/powerpc/kernel/misc_64.S

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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arch/powerpc/kernel/misc_64.S
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 * Create a kernel thread
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 *   kernel_thread(fn, arg, flags)
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 */
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_GLOBAL(original_kernel_thread)
 
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_GLOBAL(kernel_thread)
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        std     r29,-24(r1)
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        std     r30,-16(r1)
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        stdu    r1,-STACK_FRAME_OVERHEAD(r1)
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 * wait for the flag to change, indicating this kernel is going away but
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 * the slave code for the next one is at addresses 0 to 100.
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 *
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 * This is used by all slaves.
 
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 * This is used by all slaves, even those that did not find a matching
 
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 * paca in the secondary startup code.
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 *
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 * Physical (hardware) cpu id should be in r3.
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 */
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1:      mflr    r5
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        addi    r5,r5,kexec_flag-1b
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        li      r4,KEXEC_STATE_REAL_MODE
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        stb     r4,PACAKEXECSTATE(r13)
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        SYNC
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99:     HMT_LOW
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#ifdef CONFIG_KEXEC             /* use no memory without kexec */
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        lwz     r4,0(r5)
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 *
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 * get phys id from paca
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 * switch to real mode
 
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 * mark the paca as no longer used
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 * join other cpus in kexec_wait(phys_id)
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 */
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_GLOBAL(kexec_smp_wait)
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        lhz     r3,PACAHWCPUID(r13)
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        bl      real_mode
 
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        li      r4,KEXEC_STATE_REAL_MODE
 
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        stb     r4,PACAKEXECSTATE(r13)
 
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        SYNC
 
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        b       .kexec_wait
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/*