2010-02-26 22:37:53 +01:00
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/*
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* Startup glue code to uncompress the kernel
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*
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* Copyright IBM Corp. 2010
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*
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* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#include <linux/init.h>
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2011-07-24 10:48:19 +02:00
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#include <linux/linkage.h>
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2010-02-26 22:37:53 +01:00
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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 "sizes.h"
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__HEAD
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2011-07-24 10:48:19 +02:00
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ENTRY(startup_continue)
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2010-02-26 22:37:53 +01:00
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basr %r13,0 # get base
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.LPG1:
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# setup stack
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lg %r15,.Lstack-.LPG1(%r13)
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aghi %r15,-160
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brasl %r14,decompress_kernel
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# setup registers for memory mover & branch to target
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lgr %r4,%r2
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lg %r2,.Loffset-.LPG1(%r13)
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la %r4,0(%r2,%r4)
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lg %r3,.Lmvsize-.LPG1(%r13)
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lgr %r5,%r3
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# move the memory mover someplace safe
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la %r1,0x200
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mvc 0(mover_end-mover,%r1),mover-.LPG1(%r13)
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# decompress image is started at 0x11000
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lgr %r6,%r2
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br %r1
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mover:
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mvcle %r2,%r4,0
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jo mover
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br %r6
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mover_end:
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.align 8
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.Lstack:
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.quad 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
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.Loffset:
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.quad 0x11000
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.Lmvsize:
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.quad SZ__bss_start
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