17839a050SYann Gautier /* 2*3f9c9784SYann Gautier * Copyright (c) 2018-2019, STMicroelectronics - All Rights Reserved 37839a050SYann Gautier * 47839a050SYann Gautier * SPDX-License-Identifier: BSD-3-Clause 57839a050SYann Gautier */ 67839a050SYann Gautier 77839a050SYann Gautier #include <limits.h> 809d40e0eSAntonio Nino Diaz 97839a050SYann Gautier #include <platform_def.h> 1009d40e0eSAntonio Nino Diaz 1109d40e0eSAntonio Nino Diaz #include <common/bl_common.h> 1209d40e0eSAntonio Nino Diaz #include <common/debug.h> 13*3f9c9784SYann Gautier #include <drivers/st/stm32mp_reset.h> 1409d40e0eSAntonio Nino Diaz #include <drivers/st/stm32mp1_rcc.h> 1509d40e0eSAntonio Nino Diaz #include <lib/mmio.h> 1609d40e0eSAntonio Nino Diaz #include <lib/utils_def.h> 177839a050SYann Gautier 187839a050SYann Gautier #define RST_CLR_OFFSET 4U 197839a050SYann Gautier 20*3f9c9784SYann Gautier void stm32mp_reset_assert(uint32_t id) 217839a050SYann Gautier { 227839a050SYann Gautier uint32_t offset = (id / (uint32_t)__LONG_BIT) * sizeof(uintptr_t); 237839a050SYann Gautier uint32_t bit = id % (uint32_t)__LONG_BIT; 247839a050SYann Gautier 257839a050SYann Gautier mmio_write_32(RCC_BASE + offset, BIT(bit)); 267839a050SYann Gautier while ((mmio_read_32(RCC_BASE + offset) & BIT(bit)) == 0U) { 277839a050SYann Gautier ; 287839a050SYann Gautier } 297839a050SYann Gautier } 307839a050SYann Gautier 31*3f9c9784SYann Gautier void stm32mp_reset_deassert(uint32_t id) 327839a050SYann Gautier { 337839a050SYann Gautier uint32_t offset = ((id / (uint32_t)__LONG_BIT) * sizeof(uintptr_t)) + 347839a050SYann Gautier RST_CLR_OFFSET; 357839a050SYann Gautier uint32_t bit = id % (uint32_t)__LONG_BIT; 367839a050SYann Gautier 377839a050SYann Gautier mmio_write_32(RCC_BASE + offset, BIT(bit)); 387839a050SYann Gautier while ((mmio_read_32(RCC_BASE + offset) & BIT(bit)) != 0U) { 397839a050SYann Gautier ; 407839a050SYann Gautier } 417839a050SYann Gautier } 42