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https://github.com/zephyrproject-rtos/zephyr
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32cb3f0220
Add the STM32F0 Embedded Flash support in the flash_stm32 driver interface. The STM32F0 has a particularity or use the HSI as clock source for the flash controller interface, so this clock must be enabled directly in the case HSE or another clock is used by the system clock. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
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* Copyright (c) 2017 Linaro Limited
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* Copyright (c) 2017 BayLibre, SAS.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef DRIVERS_FLASH_STM32_H
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#define DRIVERS_FLASH_STM32_H
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#include <flash_registers.h>
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#if defined(CONFIG_SOC_SERIES_STM32L4X) || \
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defined(CONFIG_SOC_SERIES_STM32F0X)
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#include <clock_control.h>
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#include <clock_control/stm32_clock_control.h>
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#endif
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struct flash_stm32_priv {
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#if defined(CONFIG_SOC_SERIES_STM32F0X)
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struct stm32f0x_flash *regs;
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/* clock subsystem driving this peripheral */
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struct stm32_pclken pclken;
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#elif defined(CONFIG_SOC_SERIES_STM32F4X)
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struct stm32f4x_flash *regs;
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#elif defined(CONFIG_SOC_SERIES_STM32L4X)
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struct stm32l4x_flash *regs;
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/* clock subsystem driving this peripheral */
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struct stm32_pclken pclken;
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#endif
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struct k_sem sem;
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};
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#define FLASH_STM32_PRIV(dev) ((struct flash_stm32_priv *)((dev)->driver_data))
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#define FLASH_STM32_REGS(dev) (FLASH_STM32_PRIV(dev)->regs)
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#ifdef CONFIG_FLASH_PAGE_LAYOUT
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static inline bool flash_stm32_range_exists(struct device *dev,
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off_t offset,
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u32_t len)
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{
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struct flash_pages_info info;
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return !(flash_get_page_info_by_offs(dev, offset, &info) ||
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flash_get_page_info_by_offs(dev, offset + len - 1, &info));
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}
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#endif /* CONFIG_FLASH_PAGE_LAYOUT */
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bool flash_stm32_valid_range(struct device *dev, off_t offset,
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u32_t len, bool write);
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int flash_stm32_write_range(struct device *dev, unsigned int offset,
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const void *data, unsigned int len);
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int flash_stm32_block_erase_loop(struct device *dev, unsigned int offset,
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unsigned int len);
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int flash_stm32_wait_flash_idle(struct device *dev);
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#ifdef CONFIG_FLASH_PAGE_LAYOUT
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void flash_stm32_page_layout(struct device *dev,
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const struct flash_pages_layout **layout,
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size_t *layout_size);
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#endif
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#endif /* DRIVERS_FLASH_STM32_H */
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