4  * SPDX-License-Identifier: Apache-2.0
44 static bool flash_si32_valid_range(off_t offset, uint32_t size, bool write)  in flash_si32_valid_range()  argument
50 	if ((offset > SOC_NV_FLASH_SIZE) || ((offset + size) > SOC_NV_FLASH_SIZE)) {  in flash_si32_valid_range()
56 			return -EINVAL;  in flash_si32_valid_range()
59 		if ((size % SOC_NV_FLASH_WRITE_BLOCK_SIZE) != 0) {  in flash_si32_valid_range()
60 			return -EINVAL;  in flash_si32_valid_range()
67 static int flash_si32_read(const struct device *dev, off_t offset, void *data, size_t size)  in flash_si32_read()  argument
69 	if (!flash_si32_valid_range(offset, size, false)) {  in flash_si32_read()
70 		return -EINVAL;  in flash_si32_read()
73 	if (!size) {  in flash_si32_read()
77 	memcpy(data, (uint8_t *)CONFIG_FLASH_BASE_ADDRESS + offset, size);  in flash_si32_read()
82 static int flash_si32_write(const struct device *dev, off_t offset, const void *data_, size_t size)  in flash_si32_write()  argument
85 	struct flash_si32_data *const dev_data = dev->data;  in flash_si32_write()
86 	const struct flash_si32_config *const config = dev->config;  in flash_si32_write()
88 	if (!flash_si32_valid_range(offset, size, true)) {  in flash_si32_write()
89 		return -EINVAL;  in flash_si32_write()
92 	if (!size) {  in flash_si32_write()
96 	k_sem_take(&dev_data->mutex, K_FOREVER);  in flash_si32_write()
98 	SI32_FLASHCTRL_A_write_wraddr(config->controller, offset);  in flash_si32_write()
99 	SI32_FLASHCTRL_A_enter_multi_byte_write_mode(config->controller);  in flash_si32_write()
100 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0xA5);  in flash_si32_write()
101 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0xF2);  in flash_si32_write()
103 	for (size_t i = 0; i < size; i += SOC_NV_FLASH_WRITE_BLOCK_SIZE) {  in flash_si32_write()
106 		SI32_FLASHCTRL_A_write_wrdata(config->controller, (uint32_t)halfword);  in flash_si32_write()
108 		while (SI32_FLASHCTRL_A_is_flash_busy(config->controller)) {  in flash_si32_write()
112 	while (SI32_FLASHCTRL_A_is_buffer_full(config->controller)) {  in flash_si32_write()
115 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0x5A);  in flash_si32_write()
117 	k_sem_give(&dev_data->mutex);  in flash_si32_write()
122 static int flash_si32_erase(const struct device *dev, off_t offset, size_t size)  in flash_si32_erase()  argument
124 	struct flash_si32_data *const dev_data = dev->data;  in flash_si32_erase()
125 	const struct flash_si32_config *const config = dev->config;  in flash_si32_erase()
127 	if (!flash_si32_valid_range(offset, size, false)) {  in flash_si32_erase()
128 		return -EINVAL;  in flash_si32_erase()
133 		return -EINVAL;  in flash_si32_erase()
136 	if ((size % SOC_NV_FLASH_ERASE_BLOCK_SIZE) != 0) {  in flash_si32_erase()
137 		LOG_ERR("size %zu: not multiple of a page size", size);  in flash_si32_erase()
138 		return -EINVAL;  in flash_si32_erase()
141 	if (!size) {  in flash_si32_erase()
145 	k_sem_take(&dev_data->mutex, K_FOREVER);  in flash_si32_erase()
147 	SI32_FLASHCTRL_A_enter_flash_erase_mode(config->controller);  in flash_si32_erase()
148 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0xA5);  in flash_si32_erase()
149 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0xF2);  in flash_si32_erase()
151 	for (size_t i = 0; i < size; i += SOC_NV_FLASH_ERASE_BLOCK_SIZE) {  in flash_si32_erase()
152 		SI32_FLASHCTRL_A_write_wraddr(config->controller, offset + i);  in flash_si32_erase()
153 		SI32_FLASHCTRL_A_write_wrdata(config->controller, 0);  in flash_si32_erase()
155 		while (SI32_FLASHCTRL_A_is_buffer_full(config->controller)) {  in flash_si32_erase()
159 	SI32_FLASHCTRL_A_write_flash_key(config->controller, 0x5A);  in flash_si32_erase()
160 	SI32_FLASHCTRL_A_exit_flash_erase_mode(config->controller);  in flash_si32_erase()
162 	k_sem_give(&dev_data->mutex);  in flash_si32_erase()
173 void flash_si32_page_layout(const struct device *dev, const struct flash_pages_layout **layout,  in flash_si32_page_layout()  argument
181 static const struct flash_parameters *flash_si32_get_parameters(const struct device *dev)  in flash_si32_get_parameters()  argument
183 	ARG_UNUSED(dev);  in flash_si32_get_parameters()
188 static int flash_si32_init(const struct device *dev)  in flash_si32_init()  argument
190 	struct flash_si32_data *const dev_data = dev->data;  in flash_si32_init()
191 	const struct flash_si32_config *const config = dev->config;  in flash_si32_init()
193 	k_sem_init(&dev_data->mutex, 1, 1);  in flash_si32_init()
195 	SI32_FLASHCTRL_A_exit_read_store_mode(config->controller);  in flash_si32_init()