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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2000 Silicon Graphics, Inc.
* Copyright (C) 2005 Ralf Baechle <ralf@linux-mips.org>
*/
#ifndef __ASM_MACH_IP27_KERNEL_ENTRY_H
#define __ASM_MACH_IP27_KERNEL_ENTRY_H
#include <asm/sn/addrs.h>
#include <asm/sn/sn0/hubni.h>
#include <asm/sn/klkernvars.h>
/*
* Returns the local nasid into res.
*/
.macro GET_NASID_ASM res
dli \res, LOCAL_HUB_ADDR(NI_STATUS_REV_ID)
ld \res, (\res)
and \res, NSRI_NODEID_MASK
dsrl \res, NSRI_NODEID_SHFT
.endm
/*
* Intentionally empty macro, used in head.S. Override in
* arch/mips/mach-xxx/kernel-entry-init.h when necessary.
*/
.macro kernel_entry_setup
GET_NASID_ASM t1
move t2, t1 # text and data are here
MAPPED_KERNEL_SETUP_TLB
.endm
/*
* Do SMP slave processor setup necessary before we can savely execute C code.
*/
.macro smp_slave_setup
GET_NASID_ASM t1
dli t0, KLDIR_OFFSET + (KLI_KERN_VARS * KLDIR_ENT_SIZE) + \
KLDIR_OFF_POINTER + CAC_BASE
dsll t1, NASID_SHFT
or t0, t0, t1
ld t0, 0(t0) # t0 points to kern_vars struct
lh t1, KV_RO_NASID_OFFSET(t0)
lh t2, KV_RW_NASID_OFFSET(t0)
MAPPED_KERNEL_SETUP_TLB
/*
* We might not get launched at the address the kernel is linked to,
* so we jump there.
*/
PTR_LA t0, 0f
jr t0
0:
.endm
#endif /* __ASM_MACH_IP27_KERNEL_ENTRY_H */
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