u-boot/board/renesas/rcar-gen2-common/common.c
Nobuhiro Iwamatsu 8e2e58863a arm: rmobile: rcar: Stop clock prior to booting kernel
This stops clock except INTC-RT, MSIF, INTC-SYS, IRQC and SCIF before
kernel boots.

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-12-05 11:06:30 +09:00

59 lines
1.8 KiB
C

/*
* board/renesas/rcar-gen2-common/common.c
*
* Copyright (C) 2013 Renesas Electronics Corporation
* Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/rmobile.h>
#include <asm/arch/rcar-mstp.h>
#define TSTR0 0x04
#define TSTR0_STR0 0x01
static struct mstp_ctl mstptbl[] = {
{ SMSTPCR0, MSTP0_BITS, CONFIG_SMSTP0_ENA,
RMSTPCR0, MSTP0_BITS, CONFIG_RMSTP0_ENA },
{ SMSTPCR1, MSTP1_BITS, CONFIG_SMSTP1_ENA,
RMSTPCR1, MSTP1_BITS, CONFIG_RMSTP1_ENA },
{ SMSTPCR2, MSTP2_BITS, CONFIG_SMSTP2_ENA,
RMSTPCR2, MSTP2_BITS, CONFIG_RMSTP2_ENA },
{ SMSTPCR3, MSTP3_BITS, CONFIG_SMSTP3_ENA,
RMSTPCR3, MSTP3_BITS, CONFIG_RMSTP3_ENA },
{ SMSTPCR4, MSTP4_BITS, CONFIG_SMSTP4_ENA,
RMSTPCR4, MSTP4_BITS, CONFIG_RMSTP4_ENA },
{ SMSTPCR5, MSTP5_BITS, CONFIG_SMSTP5_ENA,
RMSTPCR5, MSTP5_BITS, CONFIG_RMSTP5_ENA },
/* No MSTP6 */
{ SMSTPCR7, MSTP7_BITS, CONFIG_SMSTP7_ENA,
RMSTPCR7, MSTP7_BITS, CONFIG_RMSTP7_ENA },
{ SMSTPCR8, MSTP8_BITS, CONFIG_SMSTP8_ENA,
RMSTPCR8, MSTP8_BITS, CONFIG_RMSTP8_ENA },
{ SMSTPCR9, MSTP9_BITS, CONFIG_SMSTP9_ENA,
RMSTPCR9, MSTP9_BITS, CONFIG_RMSTP9_ENA },
{ SMSTPCR10, MSTP10_BITS, CONFIG_SMSTP10_ENA,
RMSTPCR10, MSTP10_BITS, CONFIG_RMSTP10_ENA },
{ SMSTPCR11, MSTP11_BITS, CONFIG_SMSTP1_ENA,
RMSTPCR11, MSTP11_BITS, CONFIG_RMSTP11_ENA },
};
void arch_preboot_os(void)
{
int i;
/* stop TMU0 */
mstp_clrbits_le32(TMU_BASE + TSTR0, TMU_BASE + TSTR0, TSTR0_STR0);
/* Stop module clock */
for (i = 0; i < ARRAY_SIZE(mstptbl); i++) {
mstp_setclrbits_le32(mstptbl[i].s_addr, mstptbl[i].s_dis,
mstptbl[i].s_ena);
mstp_setclrbits_le32(mstptbl[i].r_addr, mstptbl[i].r_dis,
mstptbl[i].r_ena);
}
}