1 /*
2  * board/renesas/rcar-common/common.c
3  *
4  * Copyright (C) 2013 Renesas Electronics Corporation
5  * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
6  *
7  * SPDX-License-Identifier: GPL-2.0
8  */
9 
10 #include <common.h>
11 #include <asm/io.h>
12 #include <asm/arch/sys_proto.h>
13 #include <asm/arch/rmobile.h>
14 #include <asm/arch/rcar-mstp.h>
15 
16 #define TSTR0		0x04
17 #define TSTR0_STR0	0x01
18 
19 static struct mstp_ctl mstptbl[] = {
20 	{ SMSTPCR0, MSTP0_BITS, CONFIG_SMSTP0_ENA,
21 		RMSTPCR0, MSTP0_BITS, CONFIG_RMSTP0_ENA },
22 	{ SMSTPCR1, MSTP1_BITS, CONFIG_SMSTP1_ENA,
23 		RMSTPCR1, MSTP1_BITS, CONFIG_RMSTP1_ENA },
24 	{ SMSTPCR2, MSTP2_BITS, CONFIG_SMSTP2_ENA,
25 		RMSTPCR2, MSTP2_BITS, CONFIG_RMSTP2_ENA },
26 	{ SMSTPCR3, MSTP3_BITS, CONFIG_SMSTP3_ENA,
27 		RMSTPCR3, MSTP3_BITS, CONFIG_RMSTP3_ENA },
28 	{ SMSTPCR4, MSTP4_BITS, CONFIG_SMSTP4_ENA,
29 		RMSTPCR4, MSTP4_BITS, CONFIG_RMSTP4_ENA },
30 	{ SMSTPCR5, MSTP5_BITS, CONFIG_SMSTP5_ENA,
31 		RMSTPCR5, MSTP5_BITS, CONFIG_RMSTP5_ENA },
32 	/* No MSTP6 */
33 	{ SMSTPCR7, MSTP7_BITS, CONFIG_SMSTP7_ENA,
34 		RMSTPCR7, MSTP7_BITS, CONFIG_RMSTP7_ENA },
35 	{ SMSTPCR8, MSTP8_BITS, CONFIG_SMSTP8_ENA,
36 		RMSTPCR8, MSTP8_BITS, CONFIG_RMSTP8_ENA },
37 	{ SMSTPCR9, MSTP9_BITS, CONFIG_SMSTP9_ENA,
38 		RMSTPCR9, MSTP9_BITS, CONFIG_RMSTP9_ENA },
39 	{ SMSTPCR10, MSTP10_BITS, CONFIG_SMSTP10_ENA,
40 		 RMSTPCR10, MSTP10_BITS, CONFIG_RMSTP10_ENA },
41 	{ SMSTPCR11, MSTP11_BITS, CONFIG_SMSTP1_ENA,
42 		 RMSTPCR11, MSTP11_BITS, CONFIG_RMSTP11_ENA },
43 };
44 
45 void arch_preboot_os(void)
46 {
47 	int i;
48 
49 	/* stop TMU0 */
50 	mstp_clrbits_le32(TMU_BASE + TSTR0, TMU_BASE + TSTR0, TSTR0_STR0);
51 
52 	/* Stop module clock */
53 	for (i = 0; i < ARRAY_SIZE(mstptbl); i++) {
54 		mstp_setclrbits_le32(mstptbl[i].s_addr, mstptbl[i].s_dis,
55 				     mstptbl[i].s_ena);
56 		mstp_setclrbits_le32(mstptbl[i].r_addr, mstptbl[i].r_dis,
57 				     mstptbl[i].r_ena);
58 	}
59 }
60