| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- /*
- * Migo-R sdram self/auto-refresh setup code
- *
- * Copyright (C) 2009 Magnus Damm
- *
- * 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.
- */
- #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(migor_sdram_enter_start)
- /* SBSC: disable power down and put in self-refresh mode */
- mov.l 1f, r4
- mov.l 2f, r1
- mov.l @r4, r2
- or r1, r2
- mov.l 3f, r3
- and r3, r2
- mov.l r2, @r4
- rts
- nop
- .balign 4
- 1: .long 0xfe400008 /* SDCR0 */
- 2: .long 0x00000400
- 3: .long 0xffff7fff
- ENTRY(migor_sdram_enter_end)
- .balign 4
- ENTRY(migor_sdram_leave_start)
- /* SBSC: set auto-refresh mode */
- mov.l 1f, r4
- mov.l @r4, r0
- mov.l 4f, r1
- and r1, r0
- mov.l r0, @r4
- mov.l 6f, r4
- mov.l 8f, r0
- mov.l @r4, r1
- mov #-1, r4
- add r4, r1
- or r1, r0
- mov.l 7f, r1
- mov.l r0, @r1
- rts
- nop
- .balign 4
- 1: .long 0xfe400008 /* SDCR0 */
- 4: .long 0xfffffbff
- 6: .long 0xfe40001c /* RTCOR */
- 7: .long 0xfe400018 /* RTCNT */
- 8: .long 0xa55a0000
- ENTRY(migor_sdram_leave_end)
|
