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1 /*
2  * Copyright (c) 2018-2020, Renesas Electronics Corporation. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <lib/mmio.h>
8 
9 #include "rcar_private.h"
10 
11 #if IMAGE_BL31
cpg_write(uintptr_t regadr,uint32_t regval)12 void __attribute__ ((section(".system_ram"))) cpg_write(uintptr_t regadr, uint32_t regval)
13 #else
14 void cpg_write(uintptr_t regadr, uint32_t regval)
15 #endif
16 {
17 	uint32_t value = regval;
18 
19 	mmio_write_32((uintptr_t) RCAR_CPGWPR, ~value);
20 	mmio_write_32(regadr, value);
21 }
22 
23 #if IMAGE_BL31
mstpcr_write(uint32_t mstpcr,uint32_t mstpsr,uint32_t target_bit)24 void __attribute__ ((section(".system_ram"))) mstpcr_write(uint32_t mstpcr, uint32_t mstpsr,
25 							   uint32_t target_bit)
26 #else
27 void mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, uint32_t target_bit)
28 #endif
29 {
30 	uint32_t reg;
31 
32 	reg = mmio_read_32(mstpcr);
33 	reg &= ~target_bit;
34 	cpg_write(mstpcr, reg);
35 	while ((mmio_read_32(mstpsr) & target_bit) != 0U) {
36 	}
37 }
38