60 строки
1.4 KiB
C
60 строки
1.4 KiB
C
/*
|
|
* 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 */
|