1 /* 2 * Copyright (c) 2018, STMicroelectronics - All Rights Reserved 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <limits.h> 8 9 #include <platform_def.h> 10 11 #include <common/bl_common.h> 12 #include <common/debug.h> 13 #include <drivers/st/stm32mp1_rcc.h> 14 #include <drivers/st/stm32mp1_reset.h> 15 #include <lib/mmio.h> 16 #include <lib/utils_def.h> 17 18 #define RST_CLR_OFFSET 4U 19 20 void stm32mp1_reset_assert(uint32_t id) 21 { 22 uint32_t offset = (id / (uint32_t)__LONG_BIT) * sizeof(uintptr_t); 23 uint32_t bit = id % (uint32_t)__LONG_BIT; 24 25 mmio_write_32(RCC_BASE + offset, BIT(bit)); 26 while ((mmio_read_32(RCC_BASE + offset) & BIT(bit)) == 0U) { 27 ; 28 } 29 } 30 31 void stm32mp1_reset_deassert(uint32_t id) 32 { 33 uint32_t offset = ((id / (uint32_t)__LONG_BIT) * sizeof(uintptr_t)) + 34 RST_CLR_OFFSET; 35 uint32_t bit = id % (uint32_t)__LONG_BIT; 36 37 mmio_write_32(RCC_BASE + offset, BIT(bit)); 38 while ((mmio_read_32(RCC_BASE + offset) & BIT(bit)) != 0U) { 39 ; 40 } 41 } 42