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Rev 1166 Rev 1395
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jump_to_kernel:
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jump_to_kernel:
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	# r3 = bootinfo (pa)
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	# r3 = bootinfo (pa)
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	# r4 = bootinfo_size
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	# r4 = bootinfo_size
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	# r5 = trans (pa)
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	# r5 = trans (pa)
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	# r6 = kernel size
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	# r6 = bytes to copy
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	# r7 = framebuffer (pa)
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	# r8 = real_mode (pa)
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	# r7 = real_mode (pa)
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	# disable interrupts
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	mfmsr r31
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	rlwinm r31, r31, 0, 17, 15
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	mtmsr r31
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	# set real_mode meeting point address
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	mtspr srr0, r8
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	mtspr srr0, r7
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	# jumps to real_mode
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	# jumps to real_mode
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	mfmsr r31
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	mfmsr r31
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	lis r30, ~0@h
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	lis r30, ~0@h
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	sync
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	sync
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	isync
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	isync
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	rfid
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	rfid
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.section REALMODE
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.section REALMODE, "ax"
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.align PAGE_WIDTH
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.align PAGE_WIDTH
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.global real_mode
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.global real_mode
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real_mode:
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real_mode:
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	# copy kernel to proper location
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	# copy kernel to proper location
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	#
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	#
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	# r5 = trans (pa)
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	# r5 = trans (pa)
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	# r6 = kernel size
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	# r6 = bytes to copy
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	# r7 = framebuffer (pa)
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	li r31, PAGE_SIZE >> 2
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	li r31, PAGE_SIZE >> 2
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	li r30, 0
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	li r30, 0
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	page_copy:
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	page_copy:
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		addi r5, r5, 4
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		addi r5, r5, 4
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		b page_copy
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		b page_copy
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	copy_end:
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	copy_end:
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	# invalidate segment registers
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	# initially fill segment registers
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	li r31, 16
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	li r31, 16
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	mtctr r31
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	mtctr r31
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	li r31, 0
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	li r31, 0
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	li r30, 0
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	li r30, 0x2000
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	seg_fill:
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	seg_fill:
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		mtsrin r30, r31
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		mtsrin r30, r31
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		addi r30, r30, 0x111
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		addis r31, r31, 0x1000    # move to next SR
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		addis r31, r31, 0x1000    # move to next SR
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		bdnz seg_fill
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		bdnz seg_fill
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	# invalidate block address translation registers
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	mtspr ibat0u, r30
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	mtspr ibat0l, r30
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	mtspr ibat1u, r30
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	mtspr ibat1l, r30
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	mtspr ibat2u, r30
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	mtspr ibat2l, r30
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	mtspr ibat3u, r30
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	mtspr ibat3l, r30
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	mtspr dbat0u, r30
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	mtspr dbat0l, r30
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	mtspr dbat1u, r30
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	mtspr dbat1l, r30
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	mtspr dbat2u, r30
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	mtspr dbat2l, r30
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	mtspr dbat3u, r30
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	mtspr dbat3l, r30
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	# create identity mapping
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	# FIXME: map exactly the size of RAM
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	lis r31, 0x8000
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	ori r31, r31, 0x0ffe
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	lis r30, 0x0000
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	ori r30, r30, 0x0002
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	mtspr ibat0u, r31
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	mtspr ibat0l, r30
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	mtspr dbat0u, r31
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	mtspr dbat0l, r30
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	# FIXME: temporal framebuffer mapping
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	lis r31, 0xf000
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	ori r31, r31, 0x0ffe
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	mr r30, r7
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	ori r30, r30, 0x0002
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	mtspr dbat1u, r31
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	mtspr dbat1l, r30
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	tlbia
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	tlbia
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	tlbsync
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	# start the kernel
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	# start the kernel
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	#
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	#
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	# r3 = bootinfo (pa)
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	# r3 = bootinfo (pa)
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