1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * board/renesas/rcar-common/common.c
4  *
5  * Copyright (C) 2013 Renesas Electronics Corporation
6  * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
7  * Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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 #ifdef CONFIG_RCAR_GEN3
33 	{ SMSTPCR6, MSTP6_BITS, CONFIG_SMSTP6_ENA,
34 		RMSTPCR6, MSTP6_BITS, CONFIG_RMSTP6_ENA },
35 #endif
36 	{ SMSTPCR7, MSTP7_BITS, CONFIG_SMSTP7_ENA,
37 		RMSTPCR7, MSTP7_BITS, CONFIG_RMSTP7_ENA },
38 	{ SMSTPCR8, MSTP8_BITS, CONFIG_SMSTP8_ENA,
39 		RMSTPCR8, MSTP8_BITS, CONFIG_RMSTP8_ENA },
40 	{ SMSTPCR9, MSTP9_BITS, CONFIG_SMSTP9_ENA,
41 		RMSTPCR9, MSTP9_BITS, CONFIG_RMSTP9_ENA },
42 	{ SMSTPCR10, MSTP10_BITS, CONFIG_SMSTP10_ENA,
43 		 RMSTPCR10, MSTP10_BITS, CONFIG_RMSTP10_ENA },
44 	{ SMSTPCR11, MSTP11_BITS, CONFIG_SMSTP1_ENA,
45 		 RMSTPCR11, MSTP11_BITS, CONFIG_RMSTP11_ENA },
46 };
47 
48 void arch_preboot_os(void)
49 {
50 	int i;
51 
52 	/* stop TMU0 */
53 	mstp_clrbits_le32(TMU_BASE + TSTR0, TMU_BASE + TSTR0, TSTR0_STR0);
54 
55 	/* Stop module clock */
56 	for (i = 0; i < ARRAY_SIZE(mstptbl); i++) {
57 		mstp_setclrbits_le32((uintptr_t)mstptbl[i].s_addr,
58 				     mstptbl[i].s_dis,
59 				     mstptbl[i].s_ena);
60 		mstp_setclrbits_le32((uintptr_t)mstptbl[i].r_addr,
61 				     mstptbl[i].r_dis,
62 				     mstptbl[i].r_ena);
63 	}
64 }
65