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 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 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