1 /* 2 * Copyright (c) 2018-2021, Renesas Electronics Corporation. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <lib/mmio.h> 8 9 #include "cpg_registers.h" 10 #include "rcar_private.h" 11 12 #if IMAGE_BL31 13 void __attribute__ ((section(".system_ram"))) cpg_write(uintptr_t regadr, uint32_t regval) 14 #else 15 void cpg_write(uintptr_t regadr, uint32_t regval) 16 #endif 17 { 18 uint32_t value = regval; 19 20 mmio_write_32(CPG_CPGWPR, ~value); 21 mmio_write_32(regadr, value); 22 } 23 24 #if IMAGE_BL31 25 void __attribute__ ((section(".system_ram"))) mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, 26 uint32_t target_bit) 27 #else 28 void mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, uint32_t target_bit) 29 #endif 30 { 31 uint32_t reg; 32 33 reg = mmio_read_32(mstpcr); 34 reg &= ~target_bit; 35 cpg_write(mstpcr, reg); 36 while ((mmio_read_32(mstpsr) & target_bit) != 0U) { 37 } 38 } 39