5  * SPDX-License-Identifier: Apache-2.0
44  * github.com/raspberrypi/pico-bootrom/blob/master/bootrom/program_flash_generic.c
46  * github.com/raspberrypi/pico-sdk/blob/master/src/rp2_common/hardware_flash/flash.c
85 	io_rw_32 *reg = (io_rw_32 *) (IO_QSPI_BASE + IO_QSPI_GPIO_QSPI_SS_CTRL_OFFSET);  in __no_inline_not_in_flash_func()  local
86 	*reg = (*reg & ~IO_QSPI_GPIO_QSPI_SS_CTRL_OUTOVER_BITS)  in __no_inline_not_in_flash_func()
88 	(void) *reg;  in __no_inline_not_in_flash_func()
100 	const uint max_in_flight = 16 - 2;  in __no_inline_not_in_flash_func()
109 		tx_level = ssi_hw->txflr;  in __no_inline_not_in_flash_func()
110 		rx_level = ssi_hw->rxflr;  in __no_inline_not_in_flash_func()
113 			ssi->dr0 = (uint32_t) (tx ? *tx++ : 0);  in __no_inline_not_in_flash_func()
114 			--tx_count;  in __no_inline_not_in_flash_func()
118 			rxbyte = ssi->dr0;  in __no_inline_not_in_flash_func()
121 				--rx_skip;  in __no_inline_not_in_flash_func()
126 				--rx_count;  in __no_inline_not_in_flash_func()
141 	ssi->dr0 = cmd;  in __no_inline_not_in_flash_func()
150 		ssi->dr0 = addr >> 24;  in flash_put_cmd_addr()
190 static bool is_valid_range(off_t offset, uint32_t size)  in is_valid_range()  argument
192 	return (offset >= 0) && ((offset + size) <= FLASH_SIZE);  in is_valid_range()
195 static int flash_rpi_read(const struct device *dev, off_t offset, void *data, size_t size)  in flash_rpi_read()  argument
201 	if (!is_valid_range(offset, size)) {  in flash_rpi_read()
203 		return -EINVAL;  in flash_rpi_read()
206 	memcpy(data, (uint8_t *)(CONFIG_FLASH_BASE_ADDRESS + offset), size);  in flash_rpi_read()
211 static int flash_rpi_write(const struct device *dev, off_t offset, const void *data, size_t size)  in flash_rpi_write()  argument
221 	if (!is_valid_range(offset, size)) {  in flash_rpi_write()
222 		LOG_ERR("Write range exceeds the flash boundaries. Offset=%#lx, Size=%u",  in flash_rpi_write()
223 				offset, size);  in flash_rpi_write()
224 		return -EINVAL;  in flash_rpi_write()
229 	if ((offset & (PAGE_SIZE - 1)) > 0) {  in flash_rpi_write()
230 		bytes_to_write = MIN(PAGE_SIZE - (offset & (PAGE_SIZE - 1)), size);  in flash_rpi_write()
232 		flash_write_partial(offset, flash_ram_buffer, bytes_to_write);  in flash_rpi_write()
234 		size -= bytes_to_write;  in flash_rpi_write()
235 		offset += bytes_to_write;  in flash_rpi_write()
241 		flash_range_program(offset, flash_ram_buffer, bytes_to_write);  in flash_rpi_write()
243 		size -= bytes_to_write;  in flash_rpi_write()
244 		offset += bytes_to_write;  in flash_rpi_write()
249 		flash_write_partial(offset, flash_ram_buffer, size);  in flash_rpi_write()
257 static int flash_rpi_erase(const struct device *dev, off_t offset, size_t size)  in flash_rpi_erase()  argument
265 	if (!is_valid_range(offset, size)) {  in flash_rpi_erase()
266 		LOG_ERR("Erase range exceeds the flash boundaries. Offset=%#lx, Size=%u",  in flash_rpi_erase()
267 				offset, size);  in flash_rpi_erase()
268 		return -EINVAL;  in flash_rpi_erase()
271 	if ((offset % SECTOR_SIZE) || (size % SECTOR_SIZE)) {  in flash_rpi_erase()
272 		LOG_ERR("Erase range is not a multiple of the sector size. Offset=%#lx, Size=%u",  in flash_rpi_erase()
273 				offset, size);  in flash_rpi_erase()
274 		return -EINVAL;  in flash_rpi_erase()
279 	flash_range_erase(offset, size);  in flash_rpi_erase()