Commit eb0cd9e8 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt

sh: Add Ecovec24 specific memory pre/post sleep code

Add self-refresh handling code for the Ecovec24 board.
Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 86c7d03a
...@@ -6,4 +6,4 @@ ...@@ -6,4 +6,4 @@
# for more details. # for more details.
# #
obj-y := setup.o obj-y := setup.o sdram.o
\ No newline at end of file \ No newline at end of file
/*
* 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)
...@@ -26,6 +26,7 @@ ...@@ -26,6 +26,7 @@
#include <asm/sh_eth.h> #include <asm/sh_eth.h>
#include <asm/sh_keysc.h> #include <asm/sh_keysc.h>
#include <asm/clock.h> #include <asm/clock.h>
#include <asm/suspend.h>
#include <cpu/sh7724.h> #include <cpu/sh7724.h>
/* /*
...@@ -526,8 +527,21 @@ static void __init sh_eth_init(struct sh_eth_plat_data *pd) ...@@ -526,8 +527,21 @@ static void __init sh_eth_init(struct sh_eth_plat_data *pd)
#define PORT_HIZA 0xA4050158 #define PORT_HIZA 0xA4050158
#define IODRIVEA 0xA405018A #define IODRIVEA 0xA405018A
extern char ecovec24_sdram_enter_start;
extern char ecovec24_sdram_enter_end;
extern char ecovec24_sdram_leave_start;
extern char ecovec24_sdram_leave_end;
static int __init arch_setup(void) static int __init arch_setup(void)
{ {
/* register board specific self-refresh code */
sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF,
&ecovec24_sdram_enter_start,
&ecovec24_sdram_enter_end,
&ecovec24_sdram_leave_start,
&ecovec24_sdram_leave_end);
/* enable STATUS0, STATUS2 and PDSTATUS */ /* enable STATUS0, STATUS2 and PDSTATUS */
gpio_request(GPIO_FN_STATUS0, NULL); gpio_request(GPIO_FN_STATUS0, NULL);
gpio_request(GPIO_FN_STATUS2, NULL); gpio_request(GPIO_FN_STATUS2, NULL);
......
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