1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * Copyright (C) 2000 Silicon Graphics, Inc.
 7 * Copyright (C) 2005 Ralf Baechle <ralf@linux-mips.org>
 8 */
 9#ifndef __ASM_MACH_IP27_KERNEL_ENTRY_H
10#define __ASM_MACH_IP27_KERNEL_ENTRY_H
11
12#include <asm/sn/addrs.h>
13#include <asm/sn/sn0/hubni.h>
14#include <asm/sn/klkernvars.h>
15
16/*
17 * Returns the local nasid into res.
18 */
19	.macro GET_NASID_ASM res
20	dli	\res, LOCAL_HUB_ADDR(NI_STATUS_REV_ID)
21	ld	\res, (\res)
22	and	\res, NSRI_NODEID_MASK
23	dsrl	\res, NSRI_NODEID_SHFT
24	.endm
25
26/*
27 * Intentionally empty macro, used in head.S. Override in
28 * arch/mips/mach-xxx/kernel-entry-init.h when necessary.
29 */
30	.macro	kernel_entry_setup
31	GET_NASID_ASM	t1
32	move		t2, t1			# text and data are here
33	MAPPED_KERNEL_SETUP_TLB
34	.endm
35
36/*
37 * Do SMP slave processor setup necessary before we can savely execute C code.
38 */
39	.macro	smp_slave_setup
40	GET_NASID_ASM	t1
41	dli	t0, KLDIR_OFFSET + (KLI_KERN_VARS * KLDIR_ENT_SIZE) + \
42		    KLDIR_OFF_POINTER + CAC_BASE
43	dsll	t1, NASID_SHFT
44	or	t0, t0, t1
45	ld	t0, 0(t0)			# t0 points to kern_vars struct
46	lh	t1, KV_RO_NASID_OFFSET(t0)
47	lh	t2, KV_RW_NASID_OFFSET(t0)
48	MAPPED_KERNEL_SETUP_TLB
49
50	/*
51	 * We might not get launched at the address the kernel is linked to,
52	 * so we jump there.
53	 */
54	PTR_LA  t0, 0f
55	jr      t0
560:
57	.endm
58
59#endif /* __ASM_MACH_IP27_KERNEL_ENTRY_H */

 1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * Copyright (C) 2000 Silicon Graphics, Inc.
 7 * Copyright (C) 2005 Ralf Baechle <ralf@linux-mips.org>
 8 */
 9#ifndef __ASM_MACH_IP27_KERNEL_ENTRY_H
10#define __ASM_MACH_IP27_KERNEL_ENTRY_H
11
12#include <asm/sn/addrs.h>
13#include <asm/sn/sn0/hubni.h>
14#include <asm/sn/klkernvars.h>
15
16/*
17 * Returns the local nasid into res.
18 */
19	.macro GET_NASID_ASM res
20	dli	\res, LOCAL_HUB_ADDR(NI_STATUS_REV_ID)
21	ld	\res, (\res)
22	and	\res, NSRI_NODEID_MASK
23	dsrl	\res, NSRI_NODEID_SHFT
24	.endm
25
26/*
27 * Intentionally empty macro, used in head.S. Override in
28 * arch/mips/mach-xxx/kernel-entry-init.h when necessary.
29 */
30	.macro	kernel_entry_setup
31	GET_NASID_ASM	t1
32	move		t2, t1			# text and data are here
33	MAPPED_KERNEL_SETUP_TLB
34	.endm
35
36/*
37 * Do SMP slave processor setup necessary before we can savely execute C code.
38 */
39	.macro	smp_slave_setup
40	GET_NASID_ASM	t1
41	dli	t0, KLDIR_OFFSET + (KLI_KERN_VARS * KLDIR_ENT_SIZE) + \
42		    KLDIR_OFF_POINTER + CAC_BASE
43	dsll	t1, NASID_SHFT
44	or	t0, t0, t1
45	ld	t0, 0(t0)			# t0 points to kern_vars struct
46	lh	t1, KV_RO_NASID_OFFSET(t0)
47	lh	t2, KV_RW_NASID_OFFSET(t0)
48	MAPPED_KERNEL_SETUP_TLB
49
50	/*
51	 * We might not get launched at the address the kernel is linked to,
52	 * so we jump there.
53	 */
54	PTR_LA  t0, 0f
55	jr      t0
560:
57	.endm
58
59#endif /* __ASM_MACH_IP27_KERNEL_ENTRY_H */