diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/sh/boards/mach-se/7724/sdram.S | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/sh/boards/mach-se/7724/sdram.S')
-rw-r--r-- | kernel/arch/sh/boards/mach-se/7724/sdram.S | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/kernel/arch/sh/boards/mach-se/7724/sdram.S b/kernel/arch/sh/boards/mach-se/7724/sdram.S new file mode 100644 index 000000000..6fa4734d0 --- /dev/null +++ b/kernel/arch/sh/boards/mach-se/7724/sdram.S @@ -0,0 +1,131 @@ +/* + * MS7724SE 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(ms7724se_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(ms7724se_sdram_enter_end) + + .balign 4 +ENTRY(ms7724se_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: + + /* CPG: setup clocks before restarting external memory */ + + ED 0xA4150024, 0x00004000 /* PLLCR */ + + mov.l FRQCRA,r0 + mov.l @r0,r3 + mov.l KICK,r1 + or r1, r3 + mov.l r3, @r0 + + mov.l LSTATS,r0 + mov #1,r1 +WAIT_LSTATS: + mov.l @r0,r3 + tst r1,r3 + bf WAIT_LSTATS + + /* 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 +FRQCRA: .long 0xa4150000 +KICK: .long 0x80000000 +LSTATS: .long 0xa4150060 + +ENTRY(ms7724se_sdram_leave_end) |