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#
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#
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#include <arch/arch.h>
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#include <arch/arch.h>
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#include <arch/regdef.h>
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#include <arch/regdef.h>
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#include <arch/boot/boot.h>
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#include <arch/boot/boot.h>
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#include <arch/stack.h>
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#include <arch/mm/mmu.h>
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#include <arch/mm/mmu.h>
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#include <arch/mm/tlb.h>
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#include <arch/mm/tlb.h>
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#include <arch/mm/tte.h>
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#include <arch/mm/tte.h>
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 *
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 *
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 * Moreover, we depend on boot having established the
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 * Moreover, we depend on boot having established the
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 * following environment:
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 * following environment:
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 * - TLBs are on
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 * - TLBs are on
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 * - identity mapping for the kernel image
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 * - identity mapping for the kernel image
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 * - identity mapping for memory stack
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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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	mov %o0, %l7
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	mov %o0, %l7
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	/*
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	/*
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	 * Setup basic runtime environment.
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	 * Setup basic runtime environment.
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	 */
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	 */
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	flushw					! flush all but the active register window
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	wrpr %g0, NWINDOWS - 2, %cansave		! set maximum saveable windows
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	wrpr %g0, 0, %canrestore		! get rid of windows we will never need again
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	wrpr %g0, 0, %otherwin			! make sure the window state is consistent
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	wrpr %g0, NWINDOWS - 1, %cleanwin	! prevent needless clean_window traps for kernel
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	wrpr %g0, 0, %tl			! TL = 0, primary context register is used
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	wrpr %g0, 0, %tl			! TL = 0, primary context register is used
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	wrpr %g0, PSTATE_PRIV_BIT, %pstate	! Disable interrupts and disable 32-bit address masking.
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	wrpr %g0, PSTATE_PRIV_BIT, %pstate	! Disable interrupts and disable 32-bit address masking.
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	wrpr %g0, 0, %tl
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	wrpr %g0, 0, %tl
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	brz %l7, 1f				! skip if you are not the bootstrap CPU
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	brz %l7, 1f				! skip if you are not the bootstrap CPU
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	nop
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	nop
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	/*
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	 * So far, we have not touched the stack.
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	 * It is a good idead to set the kernel stack to a known state now.
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	 */
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	sethi %hi(temporary_boot_stack), %sp
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	or %sp, %lo(temporary_boot_stack), %sp
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	sub %sp, STACK_BIAS, %sp
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	sethi %hi(bootinfo), %o0
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	sethi %hi(bootinfo), %o0
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	call memcpy				! copy bootinfo
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	call memcpy				! copy bootinfo
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	or %o0, %lo(bootinfo), %o0
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	or %o0, %lo(bootinfo), %o0
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	call arch_pre_main
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	call arch_pre_main
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#endif
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#endif
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0:
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0:
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	ba 0b
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	ba 0b
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	nop
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	nop
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.section K_DATA_START, "aw", @progbits
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/*
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 * Create small stack to be used by the bootstrap processor.
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 * It is going to be used only for a very limited period of
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 * time, but we switch to it anyway, just to be sure we are
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 * properly initialized.
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 *
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 * What is important is that this piece of memory is covered
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 * by the 4M DTLB locked entry and therefore there will be
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 * no surprises like deadly combinations of spill trap and
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 * and TLB miss on the stack address.
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 */
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#define INITIAL_STACK_SIZE	1024
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.align STACK_ALIGNMENT
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.space INITIAL_STACK_SIZE
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.align STACK_ALIGNMENT
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temporary_boot_stack:
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.space STACK_WINDOW_SAVE_AREA_SIZE