| /* |
| * Ecovec24 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(ecovec24_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(ecovec24_sdram_enter_end) |
| |
| .balign 4 |
| ENTRY(ecovec24_sdram_leave_start) |
| |
| /* DBSC: put memory in auto-refresh mode */ |
| |
| 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 |
| |
| ENTRY(ecovec24_sdram_leave_end) |
