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/*
* Copyright (C) 2018-2019, STMicroelectronics - All Rights Reserved
* Copyright (c) 2018-2019, Linaro Limited
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef STM32MP_COMMON_H
#define STM32MP_COMMON_H
#include <stdbool.h>
#include <arch_helpers.h>
/* Functions to save and get boot context address given by ROM code */
void stm32mp_save_boot_ctx_address(uintptr_t address);
uintptr_t stm32mp_get_boot_ctx_address(void);
/* Return the base address of the DDR controller */
uintptr_t stm32mp_ddrctrl_base(void);
/* Return the base address of the DDR PHY */
uintptr_t stm32mp_ddrphyc_base(void);
/* Return the base address of the PWR peripheral */
uintptr_t stm32mp_pwr_base(void);
/* Return the base address of the RCC peripheral */
uintptr_t stm32mp_rcc_base(void);
/*
* Platform util functions for the GPIO driver
* @bank: Target GPIO bank ID as per DT bindings
*
* Platform shall implement these functions to provide to stm32_gpio
* driver the resource reference for a target GPIO bank. That are
* memory mapped interface base address, interface offset (see below)
* and clock identifier.
*
* stm32_get_gpio_bank_offset() returns a bank offset that is used to
* check DT configuration matches platform implementation of the banks
* description.
*/
uintptr_t stm32_get_gpio_bank_base(unsigned int bank);
unsigned long stm32_get_gpio_bank_clock(unsigned int bank);
uint32_t stm32_get_gpio_bank_offset(unsigned int bank);
/*
* Util for clock gating and to get clock rate for stm32 and platform drivers
* @id: Target clock ID, ID used in clock DT bindings
*/
bool stm32mp_clk_is_enabled(unsigned long id);
void stm32mp_clk_enable(unsigned long id);
void stm32mp_clk_disable(unsigned long id);
unsigned long stm32mp_clk_get_rate(unsigned long id);
/* Initialise the IO layer and register platform IO devices */
void stm32mp_io_setup(void);
static inline uint64_t arm_cnt_us2cnt(uint32_t us)
{
return ((uint64_t)us * (uint64_t)read_cntfrq()) / 1000000ULL;
}
static inline uint64_t timeout_init_us(uint32_t us)
{
return read_cntpct_el0() + arm_cnt_us2cnt(us);
}
static inline bool timeout_elapsed(uint64_t expire)
{
return read_cntpct_el0() > expire;
}
#endif /* STM32MP_COMMON_H */
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