1/*
 
 2 * Migo-R sdram self/auto-refresh setup code
 3 *
 4 *  Copyright (C) 2009 Magnus Damm
 5 *
 6 * This file is subject to the terms and conditions of the GNU General Public
 7 * License.  See the file "COPYING" in the main directory of this archive
 8 * for more details.
 9 */
10
11#include <linux/sys.h>
12#include <linux/errno.h>
13#include <linux/linkage.h>
14#include <asm/asm-offsets.h>
15#include <asm/suspend.h>
16#include <asm/romimage-macros.h>
17
18/* code to enter and leave self-refresh. must be self-contained.
19 * this code will be copied to on-chip memory and executed from there.
20 */
21	.balign 4
22ENTRY(migor_sdram_enter_start)
23
24	/* SBSC: disable power down and put in self-refresh mode */
25	mov.l	1f, r4
26	mov.l	2f, r1
27	mov.l	@r4, r2
28	or	r1, r2
29	mov.l   3f, r3
30	and	r3, r2
31	mov.l	r2, @r4
32
33	rts
34	 nop
35
36	.balign 4
371:	.long	0xfe400008 /* SDCR0 */
382:	.long	0x00000400
393:	.long	0xffff7fff
40ENTRY(migor_sdram_enter_end)
41
42	.balign 4
43ENTRY(migor_sdram_leave_start)
44
45	/* SBSC: set auto-refresh mode */
46	mov.l	1f, r4
47	mov.l	@r4, r0
48	mov.l   4f, r1
49	and	r1, r0
50	mov.l	r0, @r4
51	mov.l	6f, r4
52	mov.l	8f, r0
53	mov.l	@r4, r1
54	mov	#-1, r4
55	add	r4, r1
56	or	r1, r0
57	mov.l	7f, r1
58	mov.l	r0, @r1
59
60	rts
61	 nop
62
63	.balign 4
641:	.long	0xfe400008 /* SDCR0 */
654:	.long	0xfffffbff
666:	.long   0xfe40001c /* RTCOR */
677:	.long   0xfe400018 /* RTCNT */
688:	.long   0xa55a0000
69ENTRY(migor_sdram_leave_end)

 1/* SPDX-License-Identifier: GPL-2.0
 2 *
 3 * Migo-R sdram self/auto-refresh setup code
 4 *
 5 *  Copyright (C) 2009 Magnus Damm
 
 
 
 
 6 */
 7
 8#include <linux/sys.h>
 9#include <linux/errno.h>
10#include <linux/linkage.h>
11#include <asm/asm-offsets.h>
12#include <asm/suspend.h>
13#include <asm/romimage-macros.h>
14
15/* code to enter and leave self-refresh. must be self-contained.
16 * this code will be copied to on-chip memory and executed from there.
17 */
18	.balign 4
19ENTRY(migor_sdram_enter_start)
20
21	/* SBSC: disable power down and put in self-refresh mode */
22	mov.l	1f, r4
23	mov.l	2f, r1
24	mov.l	@r4, r2
25	or	r1, r2
26	mov.l   3f, r3
27	and	r3, r2
28	mov.l	r2, @r4
29
30	rts
31	 nop
32
33	.balign 4
341:	.long	0xfe400008 /* SDCR0 */
352:	.long	0x00000400
363:	.long	0xffff7fff
37ENTRY(migor_sdram_enter_end)
38
39	.balign 4
40ENTRY(migor_sdram_leave_start)
41
42	/* SBSC: set auto-refresh mode */
43	mov.l	1f, r4
44	mov.l	@r4, r0
45	mov.l   4f, r1
46	and	r1, r0
47	mov.l	r0, @r4
48	mov.l	6f, r4
49	mov.l	8f, r0
50	mov.l	@r4, r1
51	mov	#-1, r4
52	add	r4, r1
53	or	r1, r0
54	mov.l	7f, r1
55	mov.l	r0, @r1
56
57	rts
58	 nop
59
60	.balign 4
611:	.long	0xfe400008 /* SDCR0 */
624:	.long	0xfffffbff
636:	.long   0xfe40001c /* RTCOR */
647:	.long   0xfe400018 /* RTCNT */
658:	.long   0xa55a0000
66ENTRY(migor_sdram_leave_end)