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author | Paul Mundt <lethal@linux-sh.org> | 2011-01-13 15:06:28 +0900 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2011-01-13 15:06:28 +0900 |
commit | f43dc23d5ea91fca257be02138a255f02d98e806 (patch) | |
tree | b29722f6e965316e90ac97abf79923ced250dc21 /arch/sh/boards/mach-ecovec24/sdram.S | |
parent | f8e53553f452dcbf67cb89c8cba63a1cd6eb4cc0 (diff) | |
parent | 4162cf64973df51fc885825bc9ca4d055891c49f (diff) | |
download | talos-op-linux-f43dc23d5ea91fca257be02138a255f02d98e806.tar.gz talos-op-linux-f43dc23d5ea91fca257be02138a255f02d98e806.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework
Conflicts:
arch/sh/kernel/cpu/sh2/setup-sh7619.c
arch/sh/kernel/cpu/sh2a/setup-mxg.c
arch/sh/kernel/cpu/sh2a/setup-sh7201.c
arch/sh/kernel/cpu/sh2a/setup-sh7203.c
arch/sh/kernel/cpu/sh2a/setup-sh7206.c
arch/sh/kernel/cpu/sh3/setup-sh7705.c
arch/sh/kernel/cpu/sh3/setup-sh770x.c
arch/sh/kernel/cpu/sh3/setup-sh7710.c
arch/sh/kernel/cpu/sh3/setup-sh7720.c
arch/sh/kernel/cpu/sh4/setup-sh4-202.c
arch/sh/kernel/cpu/sh4/setup-sh7750.c
arch/sh/kernel/cpu/sh4/setup-sh7760.c
arch/sh/kernel/cpu/sh4a/setup-sh7343.c
arch/sh/kernel/cpu/sh4a/setup-sh7366.c
arch/sh/kernel/cpu/sh4a/setup-sh7722.c
arch/sh/kernel/cpu/sh4a/setup-sh7723.c
arch/sh/kernel/cpu/sh4a/setup-sh7724.c
arch/sh/kernel/cpu/sh4a/setup-sh7763.c
arch/sh/kernel/cpu/sh4a/setup-sh7770.c
arch/sh/kernel/cpu/sh4a/setup-sh7780.c
arch/sh/kernel/cpu/sh4a/setup-sh7785.c
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
arch/sh/kernel/cpu/sh4a/setup-shx3.c
arch/sh/kernel/cpu/sh5/setup-sh5.c
drivers/serial/sh-sci.c
drivers/serial/sh-sci.h
include/linux/serial_sci.h
Diffstat (limited to 'arch/sh/boards/mach-ecovec24/sdram.S')
-rw-r--r-- | arch/sh/boards/mach-ecovec24/sdram.S | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-ecovec24/sdram.S b/arch/sh/boards/mach-ecovec24/sdram.S new file mode 100644 index 000000000000..3963c6f23d52 --- /dev/null +++ b/arch/sh/boards/mach-ecovec24/sdram.S @@ -0,0 +1,111 @@ +/* + * 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) + + mov.l @(SH_SLEEP_MODE, r5), r0 + tst #SUSP_SH_RSTANDBY, r0 + bf resume_rstandby + + /* 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 + +resume_rstandby: + + /* DBSC: re-initialize and put in auto-refresh */ + + ED 0xFD000108, 0x00000181 /* DBPDCNT0 */ + ED 0xFD000020, 0x015B0002 /* DBCONF */ + ED 0xFD000030, 0x03071502 /* DBTR0 */ + ED 0xFD000034, 0x02020102 /* DBTR1 */ + ED 0xFD000038, 0x01090405 /* DBTR2 */ + ED 0xFD00003C, 0x00000002 /* DBTR3 */ + ED 0xFD000008, 0x00000005 /* DBKIND */ + ED 0xFD000040, 0x00000001 /* DBRFPDN0 */ + ED 0xFD000040, 0x00000000 /* DBRFPDN0 */ + ED 0xFD000018, 0x00000001 /* DBCKECNT */ + + mov #100,r0 +WAIT_400NS: + dt r0 + bf WAIT_400NS + + ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ + ED 0xFD000060, 0x00020000 /* DBMRCNT (EMR2) */ + ED 0xFD000060, 0x00030000 /* DBMRCNT (EMR3) */ + ED 0xFD000060, 0x00010004 /* DBMRCNT (EMR) */ + ED 0xFD000060, 0x00000532 /* DBMRCNT (MRS) */ + ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ + ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ + ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ + ED 0xFD000060, 0x00000432 /* DBMRCNT (MRS) */ + ED 0xFD000060, 0x000103c0 /* DBMRCNT (EMR) */ + ED 0xFD000060, 0x00010040 /* DBMRCNT (EMR) */ + + mov #100,r0 +WAIT_400NS_2: + dt r0 + bf WAIT_400NS_2 + + ED 0xFD000010, 0x00000001 /* DBEN */ + ED 0xFD000044, 0x0000050f /* DBRFPDN1 */ + ED 0xFD000048, 0x236800e6 /* DBRFPDN2 */ + + mov.l DUMMY,r0 + mov.l @r0, r1 /* force single dummy read */ + + ED 0xFD000014, 0x00000002 /* DBCMDCNT (PALL) */ + ED 0xFD000014, 0x00000004 /* DBCMDCNT (REF) */ + ED 0xFD000108, 0x00000080 /* DBPDCNT0 */ + ED 0xFD000040, 0x00010000 /* DBRFPDN0 */ + + rts + nop + + .balign 4 +DUMMY: .long 0xac400000 + +ENTRY(ecovec24_sdram_leave_end) |