aaf9128abc
Update license to use SPDX-License-Identifier instead of verbose license text. Link: http://lkml.kernel.org/r/87in08ct0n.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
78 lines
1.9 KiB
ArmAsm
78 lines
1.9 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* KFR2R09 sdram self/auto-refresh setup code
|
|
*
|
|
* Copyright (C) 2009 Magnus Damm
|
|
*/
|
|
|
|
#include <linux/sys.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/suspend.h>
|
|
#include <asm/romimage-macros.h>
|
|
|
|
/* code to enter and leave self-refresh. must be self-contained.
|
|
* this code will be copied to on-chip memory and executed from there.
|
|
*/
|
|
.balign 4
|
|
ENTRY(kfr2r09_sdram_enter_start)
|
|
|
|
/* DBSC: put memory in self-refresh mode */
|
|
|
|
ED 0xFD000010, 0x00000000 /* DBEN */
|
|
ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
|
|
ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
|
|
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
|
|
ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
|
|
|
|
rts
|
|
nop
|
|
|
|
ENTRY(kfr2r09_sdram_enter_end)
|
|
|
|
.balign 4
|
|
ENTRY(kfr2r09_sdram_leave_start)
|
|
|
|
/* DBSC: put memory in auto-refresh mode */
|
|
|
|
mov.l @(SH_SLEEP_MODE, r5), r0
|
|
tst #SUSP_SH_RSTANDBY, r0
|
|
bf resume_rstandby
|
|
|
|
ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
|
|
WAIT 1
|
|
ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */
|
|
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
|
|
ED 0xFD000010, 0x00000001 /* DBEN */
|
|
ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
|
|
|
|
rts
|
|
nop
|
|
|
|
resume_rstandby:
|
|
|
|
/* DBSC: re-initialize and put in auto-refresh */
|
|
|
|
ED 0xFD000108, 0x40000301 /* DBPDCNT0 */
|
|
ED 0xFD000020, 0x011B0002 /* DBCONF */
|
|
ED 0xFD000030, 0x03060E02 /* DBTR0 */
|
|
ED 0xFD000034, 0x01020102 /* DBTR1 */
|
|
ED 0xFD000038, 0x01090406 /* DBTR2 */
|
|
ED 0xFD000008, 0x00000004 /* DBKIND */
|
|
ED 0xFD000040, 0x00000001 /* DBRFPDN0 */
|
|
ED 0xFD000040, 0x00000000 /* DBRFPDN0 */
|
|
ED 0xFD000018, 0x00000001 /* DBCKECNT */
|
|
WAIT 1
|
|
ED 0xFD000010, 0x00000001 /* DBEN */
|
|
ED 0xFD000044, 0x000004AF /* DBRFPDN1 */
|
|
ED 0xFD000048, 0x20CF0037 /* DBRFPDN2 */
|
|
ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */
|
|
ED 0xFD000108, 0x40000300 /* DBPDCNT0 */
|
|
ED 0xFD000040, 0x00010000 /* DBRFPDN0 */
|
|
|
|
rts
|
|
nop
|
|
|
|
ENTRY(kfr2r09_sdram_leave_end)
|