| /* | |
| * AP325RXA 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(ap325rxa_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(ap325rxa_sdram_enter_end) | |
| .balign 4 | |
| ENTRY(ap325rxa_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(ap325rxa_sdram_leave_end) |