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Rev 895 Rev 1777
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 * the kernel relocates itself to its VMA.
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 * the kernel relocates itself to its VMA.
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 */
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 */
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.global kernel_image_start
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.global kernel_image_start
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kernel_image_start:
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kernel_image_start:
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0:
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	b 1f
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	nop
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/*
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 * This header forces SILO to load the kernel at 0x4000.
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 * More precisely, SILO will think this is an old version of Linux.
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 */
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.ascii "HdrS"
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.word 0
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.half 0
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.align 8
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1:
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	flushw				! flush all but the active register window
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	flushw				! flush all but the active register window
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	/*
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	 * Prepare to copy the kernel image to 4M.
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	 */
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	set LMA, %g1			! source address
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	set VMA, %g2			! destination address
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	set hardcoded_ktext_size, %g3	! link address of hardcoded_ktext_size
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	set hardcoded_kdata_size, %g4	! link address of hardcoded_kdata_size
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	sub %g3, %g2, %g3		! offset of hardcoded_ktext_size from the beginning of the load address
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	sub %g4, %g2, %g4		! offset of hardcoded_kdata_size from the beginning of the load address
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	ldx [%g3 + %g1], %g3		! hardcoded_ktext_size -> %g3
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	ldx [%g4 + %g1], %g4		! hardcoded_kdata_size -> %g4
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	add %g3, %g4, %g3		! size of kernel text and data
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	/*
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	 * Start copying the kernel from higher addresses towards lower addresses.
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	 */
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2:	dec %g3
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	ldub [%g1 + %g3], %g4
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	stb %g4, [%g2 + %g3]
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	cmp %g3, 0
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	bnz 2b
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	nop
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	set relocated, %g1
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	jmp %g1
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	nop
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relocated:
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	set ofw, %l0
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	set ofw, %l0
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	call ofw_init
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	call ofw_init
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	stx %o4, [%l0]
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	stx %o4, [%l0]
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