4  * SPDX-License-Identifier: Apache-2.0
28 static const struct flash_parameters flash_gecko_parameters = {
33 static bool write_range_is_valid(off_t offset, uint32_t size);
34 static bool read_range_is_valid(off_t offset, uint32_t size);
35 static int erase_flash_block(off_t offset, size_t size);
36 static void flash_gecko_write_protection(bool enable);
38 static int flash_gecko_read(const struct device *dev, off_t offset,  in flash_gecko_read()
43 		return -EINVAL;  in flash_gecko_read()
55 static int flash_gecko_write(const struct device *dev, off_t offset,  in flash_gecko_write()
58 	struct flash_gecko_data *const dev_data = dev->data;  in flash_gecko_write()
60 	void *address;  in flash_gecko_write()  local
64 		return -EINVAL;  in flash_gecko_write()
71 	k_sem_take(&dev_data->mutex, K_FOREVER);  in flash_gecko_write()
74 	address = (uint8_t *)CONFIG_FLASH_BASE_ADDRESS + offset;  in flash_gecko_write()
75 	msc_ret = MSC_WriteWord(address, data, size);  in flash_gecko_write()
77 		ret = -EIO;  in flash_gecko_write()
81 	k_sem_give(&dev_data->mutex);  in flash_gecko_write()
86 static int flash_gecko_erase(const struct device *dev, off_t offset,  in flash_gecko_erase()
89 	struct flash_gecko_data *const dev_data = dev->data;  in flash_gecko_erase()
93 		return -EINVAL;  in flash_gecko_erase()
98 		return -EINVAL;  in flash_gecko_erase()
103 		return -EINVAL;  in flash_gecko_erase()
110 	k_sem_take(&dev_data->mutex, K_FOREVER);  in flash_gecko_erase()
116 	k_sem_give(&dev_data->mutex);  in flash_gecko_erase()
121 static void flash_gecko_write_protection(bool enable)  in flash_gecko_write_protection()
125 		MSC->LOCK = 0;  in flash_gecko_write_protection()
129 		MSC->LOCK = MSC_LOCK_LOCKKEY_UNLOCK;  in flash_gecko_write_protection()
131 		MSC->LOCK = MSC_UNLOCK_CODE;  in flash_gecko_write_protection()
137  * - A flash address to write to must be aligned to words.
138  * - Number of bytes to write must be divisible by 4.
140 static bool write_range_is_valid(off_t offset, uint32_t size)  in write_range_is_valid()
147 static bool read_range_is_valid(off_t offset, uint32_t size)  in read_range_is_valid()
152 static int erase_flash_block(off_t offset, size_t size)  in erase_flash_block()
155 	void *address;  in erase_flash_block()  local
159 		address = (uint8_t *)CONFIG_FLASH_BASE_ADDRESS + tmp;  in erase_flash_block()
160 		msc_ret = MSC_ErasePage(address);  in erase_flash_block()
162 			ret = -EIO;  in erase_flash_block()
171 static const struct flash_pages_layout flash_gecko_0_pages_layout = {
186 static const struct flash_parameters *
194 static int flash_gecko_get_size(const struct device *dev, uint64_t *size)  in flash_gecko_get_size()
203 static int flash_gecko_init(const struct device *dev)  in flash_gecko_init()
205 	struct flash_gecko_data *const dev_data = dev->data;  in flash_gecko_init()
207 	k_sem_init(&dev_data->mutex, 1, 1);  in flash_gecko_init()
212 	MSC->LOCK = 0;  in flash_gecko_init()
214 	LOG_INF("Device %s initialized", dev->name);  in flash_gecko_init()
219 static DEVICE_API(flash, flash_gecko_driver_api) = {
230 static struct flash_gecko_data flash_gecko_0_data;